This study aimed to investigate the key bioactive constituents and polypharmacological mechanisms of Banxia Xiexin Decoction (BXD) against polycystic ovary syndrome (PCOS) through integrated network pharmacology and experimental validation.

Network pharmacology was used to determine the key ingredients, potential targets and signaling pathways. 3-week-old female mice were injected subcutaneously with DHEA (6mg/100g body weight) daily to construct a PCOS model and administered different doses BXD and its key ingredients for intervention. Ovarian pathology, vaginal smears, oxidative stress-related indicators, and hub genes were tested to evaluate its therapeutic effects.

We identified 3 key ingredients and 99 potential targets for BXD treatment of PCOS. Biological functions of these targets were mainly enriched in oxidative stress, hormone response and apoptosis. KEGG analysis showed they were mainly involved in signaling pathways such as PI3K-AKT, MAPK, HIF-1 and IL17. By PPI and algorithmic analysis, we identified 8 hub genes, 5 of which (JUN, MAPK1, MAPK3, FOS, TP53) were related to oxidative stress. Further analysis indicated that quercetin, glycyrrhetinic acid A and naringenin are the three key ingredients of BXD, and they have superior binding effects on the hub genes. Animal experiments demonstrated that BXD and its three key ingredients significantly ameliorated the PCOS symptoms, oxidative stress-related indicators and the expression of hub genes.

Five oxidative stress-related hub targets of BXD for PCOS were identified, including FOS, JUN, MAPK3, TP53 and HSP90AA1, while three key ingredients of BXD, quercetin, glycyrrhetinic acid A and naringenin, were uncovered.

Mitral valve prolapse (MVP), the most prevalent primary valvular disease, serves as a direct risk factor for multiple cardiovascular disorders and exhibits a high prevalence in the general population. As no specific pharmacological therapies currently exist for MVP, the identification of precise therapeutic targets is imperative.

We conducted comprehensive causal genetic inference by integrating genetic data from expression quantitative trait loci (eQTL) and genome-wide association studies (GWAS). Analytical approaches included Mendelian Randomization (MR), colocalization analysis, Summary-data-based Mendelian Randomization (SMR), Linkage Disequilibrium Score Regression (LDSC), and High-Definition Likelihood (HDL) analysis. Protein quantitative trait loci (pQTL) were utilized to validate gene expression. Replication analyses were performed using additional exposure datasets. Methylation quantitative trait loci (mQTL) were employed to elucidate regulatory roles of methylation sites on genes and disease pathogenesis. Phenome-Wide Association Study (PheWAS) was conducted to predict potential adverse effects of gene-targeted therapies. Drug candidates targeting identified genes were predicted via the Drug Signature Database (DSigDB) and validated through molecular docking. Core targets were identified using the STRING database, followed by molecular dynamics simulations.

Two-sample MR analysis showed that genetically predicted 266 genes had positive or negative causal relationships with MVP. Colocalization analysis indicated that 9 genes had a posterior probability greater than 0.75. Subsequent SMR analysis excluded the gene GAPVD1. HDL analysis showed that except for the gene PTPN1, the remaining 7 genes were all significantly genetically associated with MVP, and LDSC analysis further showed that only NMB was associated with MVP. Validation using pQTL data confirmed that increased NMB protein expression reduced the risk of MVP. Replication analysis further verified this conclusion. In addition, SMR analysis of methylation sites for 8 genes indicated that multiple methylation sites played a key role in gene regulation of mitral valve prolapse. PheWAS results showed that targeted therapy for 8 genes did not detect other causal associations at the genome-wide significance level. Molecular docking showed that quercetin had good binding ability with 8 target genes. The STRING database identified 3 core target proteins, and molecular dynamics simulations further verified the binding ability of quercetin with core target proteins.

This study successfully predicted the potential of multiple druggable genes as effective therapeutic targets for MVP through genetic methods, validated the potential of quercetin as a drug, and provided new ideas for drug treatment strategies for MVP.

Diabetic nephropathy (DN) is a severe complication of diabetes, characterized by chronic inflammation, metabolic disturbances, and progressive renal damage. Natural perennial herb, such as Epimedium, has shown potential therapeutic effects on DN, but its underlying mechanisms remain unclear. This study aimed to explore the pharmacological mechanisms of Epimedium in the treatment of DN through network pharmacology, molecular docking, and experimental validation. Active components of Epimedium were identified using TCMSP and SwissTargetPrediction databases, while DN-related targets were retrieved from GeneCards, DisGeNET, OMIM, and TTD databases. Overlapping targets were analyzed via PPI network and Cytoscape's cytoHubba plugin to identify hub genes. GO and KEGG enrichment analyses were conducted to explore functional pathways. Molecular docking validated the binding affinity between key targets and active components. Finally, high-glucose-induced HK-2 cell injury models were used to verify the protective effects of Epimedium through RT-qPCR, western blotting, and mitochondrial function assays. A total of 224 overlapping targets were identified, with AKT1, TNF, HSP90AA1, and SRC serving as key hub genes. GO and KEGG analyses revealed significant enrichment in pathways such as the PI3K-Akt signaling pathway and lipid metabolism. Molecular docking demonstrated strong interactions between Epimedium components and hub targets. Experimental validation showed that Epimedium restored nephrin and WT1 protein levels, mitigated mitochondrial dysfunction, and reversed high-glucose-induced overexpression of key targets. Epimedium exerts therapeutic effects on DN through multi-target interactions, primarily via the PI3K-Akt pathway, highlighting its potential as a novel treatment for DN.

The online version contains supplementary material available at 10.1007/s10616-025-00748-0.

Replication of the human Enterovirus 71 (EV71) and herpes simplex virus 1 (HSV-1) requires Hsp90 chaperone activity. Vertebrate cells express two cytosolic Hsp90 proteins, Hsp90α and Hsp90β. Earlier reports suggested that EV71 replication might depend solely on the Hsp90β, whereas HSV-1 replication depended on Hsp90α. Here, we describe construction of the cell line knockouts missing Hsp90α or Hsp90β protein. Using these cells, we found that HSV-1 and, another enterovirus, Coxsackievirus B5 (CVB5) replicate in both Hsp90α and Hsp90β knockout cells with equal efficiency. The presented results demonstrate that cell lines with a mutation inactivating the specific HSP90 gene might be an easy-to-use and robust system to study specific cellular functions of Hsp90α and Hsp90β.

Bombyx batryticatus (BB) is a well-known animal-derived traditional Chinese medicine (TCM) commonly used for the treatment of epilepsy, convulsions, headaches, and other disorders. However, quality evaluation and control of BB remains incomplete, necessitating robust quality control paradigms.

To identify the Quality markers (Q-markers) of BB for the treatment of epilepsy by integrating serum pharmacochemistry, network pharmacology, HPLC-UV quantification, and temporal-efficacy validation, all in accordance with the core principles of Q-markers.

Initially, Q-markers candidates were screened through serum pharmacochemistry-based tracing to achieve "traceability". Additionally, network pharmacology predictions and relevant literature were consulted to confirm potential bioactivity. Next, fingerprint and their contents in BB were determined by HPLC-UV, which provided the dosage basis for the efficacy validation experiment and ensured of "measurability". Finally, their antiepileptic effects were investigated through a temporal pharmacodynamic study using acute pentylenetetrazole (PTZ)-induced mouse epilepsy model to ensure "pharmacological effectiveness".

HPLC-Q-TOF/MS analysis identified 65 compounds in the BB extract, of which 31 were found in mouse serum, including 9 amino acids, 4 nucleosides, 8 peptides, 5 fatty acids, 3 organic acids and 2 other components. Only 8 cyclic peptides were screened for network pharmacology analysis, and 4 potential bioactive components were selected for HPLC-UV quantification. The average contents of the final selected candidates across 15 batches of BB were as follows: beauvericin at 192.3 μg/g, bassianolide at 325.6 μg/g, and ammonium oxalate at 66515 μg/g. The PTZ model experiment showed that BB powder suspension (0.86 g/kg, i.g.) significantly prolonged seizure latency from 1 to 8 h (P < 0.05) with fluctuating efficacy (the maximum effect Emax1 at 3 h and Emax2 at 8 h). Ammonium oxalate (50 mg/kg, i.g.) demonstrated rapid-onset protection (Emax at 1-2 h), significantly increasing seizure latency at 1-4 h (P < 0.01) and achieving 90 % survival rate at 2 h (vs. 30 % model, P < 0.05), suggesting its role as an active ingredient in the early stage of BB's anticonvulsant effects. Beauvericin and bassianolide showed delayed efficacy (both Emax at 6 h), significantly extending seizure latency at 4-8 h and 2-8 h (P < 0.05), respectively, indicating their potential as active ingredients in the later stage.

Beauvericin, bassianolide and ammonium oxalate could be used as the Q-markers of BB, and the strategy applied in this study could effectively aid in identifying Q-markers for other TCMs.

Immune checkpoint inhibitors (ICIs) have revolutionized colon cancer treatment, but their efficacy is largely restricted by the limited presence of CD8+ cytotoxic T lymphocytes (CTLs). However, the specific genetic alterations that impact the CD8+ CTL infiltration in colon cancer remain poorly understood. Here, we analyzed clinical and multi-omics data from the Memorial Sloan-Kettering Cancer Center (MSKCC) ICIs-treated and The Cancer Genome Atlas (TCGA) colon adenocarcinoma (COAD) cohorts to screen the key mutations that may influence the efficacy of immunotherapy. We found that patients with NCOA3 mutations exhibit better response to immunotherapy and higher CD8+ CTL infiltration. In vitro and in vivo experiments revealed that mutant NCOA3 increases the efficacy of anti-PD-L1 and CD8+ CTL recruitment by upregulating C-X-C motif chemokine ligand 9 (CXCL9), which is dependent on its impaired intrinsic histone acetyltransferase activity. Mechanistically, wild-type NCOA3 as histone acetyltransferase upregulates Heat shock protein 90 alpha (HSP90α) by enhancing histone H3 lysine 27 acetylation (H3K27ac) at its promoter region. Increased HSP90α stabilizes Enhancer of zeste homolog 2 (EZH2), which then increase the histone H3 lysine 27 trimethylation (H3K27me3) at the CXCL9 promoter region, thereby suppressing the expression of CXCL9. Targeted inhibition of NCOA3 by small molecular inhibitor SI-2 improves the efficacy of PD-L1 blockade therapy. NCOA3 could serve as a novel biomarker and potential target to improve the efficacy of immunotherapy.

The purpose of this study is to elucidate the structure and biological properties of an extracellular polysaccharide (EPS), named EPS12, produced by Klebsiella sp. SXW12, a strain isolated from pond sludge. The maximum EPS12 yield of 15 g/L was obtained after optimizing the fermentation conditions by single-factor effects. EPS12 was an acidic homogeneous polysaccharide, and the molecular weight was measured to be 9.39 × 104 Da. Monosaccharide composition, methylation analysis, and NMR showed that EPS12 backbone was →3)-β-D-Glcp-(1 → 4)-β-D-GlcpA-(1 → 4) -α-L-Fucp-(1→, and terminal-β-D-Glcp was connected to the O-4 of →3)-β-D-Glcp-(1→. Network pharmacology analysis suggested that EPS12 may have anti-cancer effects. The anti-tumor effect of EPS12 on LLC-LUC tumor mice was studied. The results indicated that EPS12 exhibited excellent anti-tumor activity in mice at low doses (1, 2, and 4 mg/kg body weight). In vivo, EPS12 increased spleen index, promoted lymphocyte proliferation, and reduced spleen cell apoptosis through the Bcl-2-Bax/Bak-Caspase-3 apoptotic signaling pathway, and exhibited good biosafety. In addition, EPS12 could partially regulate the metabolic profiles of splenocytes. These properties make EPS12 a potential efficient and cost-effective anti-tumor agent or health product.

Triple-negative breast cancer (TNBC) is a rare and highly metastatic form of cancer. Honokiol (HNK), a biphenolic compound, has been utilized in TNBC treatment, though its specific targets remain unclear. This study aimed to elucidate the effects of HNK on TNBC by combining network pharmacology predictions and experimental validation to uncover its mechanisms. MDA-MB 231 and MDA-MB 468 cells were pre-treated with varying doses of HNK for 24 h. Cell viability, proliferation, and apoptosis were assessed using CCK8 and FACS assays, whereas a wound healing assay was used to evaluate cell migration. A tubule formation assay was used to assess blood vessel formation in HUVECs. Additionally, in vivo activity was confirmed using a zebrafish xenograft model. Network pharmacology and molecular docking predicted active ingredients, key targets, and potential mechanisms of HNK against TNBC. Results indicated that HNK induces apoptosis in MDA-MB 231 and MDA-MB 468 cells and inhibits their migration and proliferation. Furthermore, HNK suppressed blood vessel formation. Zebrafish xenograft experiments validated HNK's inhibitory effect on TNBC cells in vivo. Network pharmacology identified 36 potential HNK targets against TNBC, including HSP90AA1, AKT1, EGFR, ERBB2, HSP90AB1, PGR, MDM2, HDAC1, NR3C1, and MAPK14. Key signaling pathways such as PI3K-Akt, MAPK, Rap1, Ras, and FoxO were implicated in HNK's anti-TNBC mechanism. Molecular docking demonstrated spontaneous interactions between HNK and the targeted proteins. In conclusion, HNK may reduce angiogenesis by blocking the EGFR and HSP90AB1 pathways thereby decreasing proliferation and increasing apoptosis in TNBC cells.

α-Synucleinopathies are progressive neurodegenerative disorders characterized by intracellular aggregation of α-synuclein, but their molecular pathogenesis remains unknown. Here, we explore cell-specific changes in gene expression across different α-synucleinopathies. We perform single-nucleus RNA sequencing on nearly 300 000 nuclei from the prefrontal cortex of individuals with idiopathic Parkinson's disease (PD, n = 20), Parkinson's disease caused by LRRK2 mutations (LRRK2-PD, n = 7), multiple system atrophy (n = 6) and healthy controls (n = 13). Idiopathic PD and LRRK2-PD exhibit a largely overlapping cell type-specific signature, which is distinct from that of multiple system atrophy and includes an overall decrease of the transcriptional output in neurons. Notably, most of the differential expression signal in idiopathic PD and LRRK2-PD is concentrated in a specific deep cortical neuronal subtype expressing adrenoceptor alpha 2A. Although most differentially expressed genes are highly cell type and disease specific, PDE10A is found to be downregulated consistently in most cortical neurons and across all three diseases. Finally, exploiting the variable presence and/or severity of α-synuclein pathology in LRRK2-PD and idiopathic PD, we identify cell type-specific signatures associated with α-synuclein pathology, including a neuronal upregulation of SNCA itself, encoding α-synuclein. Our findings provide new insights into the cell-specific transcriptional landscape of the α-synucleinopathy spectrum.

The cytoskeleton is composed of microtubules, microfilaments, and intermediate filaments in cells. While the functions of microtubules and microfilaments have been well elucidated, the roles of intermediate filaments and associated proteins remain largely unknown, especially in meiosis. BFSP1 is an intermediate filament protein mainly expressed in the eye lens to play important roles in the development of congenital cataract. Here, we document that BFSP1 functions as a spindle regulator to drive the oocyte asymmetric division. Specifically, we found that BFSP1 distributed on the spindle apparatus during oocyte meiotic maturation. Depletion of BFSP1 resulted in symmetric division of oocytes, accompanied by the formation of elongated spindles at metaphase I and anaphase/telophase I stages. In addition, immunoprecipitation combined with mass spectrometry analysis identified MAP1B, a microtubule-associated protein, as an interacting partner of BFSP1. Depletion or mutation of MAP1B phenocopied the meiotic defects observed in BFSP1-depleted oocytes, and expression of exogenous MAP1B-EGFP in BFSP1-depleted oocytes recovered the spindle length and asymmetric division. We further determined that BFSP1 recruited molecular chaperone HSP90α on the spindle to stabilize MAP1B, thereby controlling the spindle length. To sum up, our findings reveal a unique meiotic role for BFSP1 in the regulation of spindle dynamics and oocyte asymmetric division.

Minimal study focused on the association between mixed pollutants in atmospheric particulate matter (PM2.5) and their reproductive health risks. Utilizing a novel quantitative structure-activity relationship (QSAR) integrated machine learning algorithms, we evaluated the mixed reproductive health risks associated with phthalates (PAEs) and organophosphates (OPEs) exposure by assessing the affinities of these compounds binding to estrogen receptors (ER) and androgen receptors (AR). The mixed toxicity equivalent factor (TEFmix) and mixed toxicity equivalent quantity (TEQmix) by the QSAR model were all smaller than the sum TEF and TEQ of individual PAEs and OPEs, which may be due to the antagonistic effect of PAEs and OPEs monomers on reproductive toxicity. Based on network toxicology approach, a total of 590 potential targets associated with PAEs and OPEs affecting sex hormones were initially identified, with an additional 50 core targets, including AR and ER. Di-2-ethylhexyl phthalate (DEHP), triphenyl phosphate (TPHP) and mono-(2-ethylhexyl) phthalate (MEHP) were key components to disrupt AR and ER signaling pathway, and was confirmed by molecular docking analysis. In addition to ER and AR, serine/threonine kinase 1 (AKT1) and heat shock protein 90α family A member 1 (HSP90AA1) might be key targets for reproductive toxicity, which have hardly mentioned before. Our study provided precious information on the mixed reproductive exposure risk of PAEs and OPEs in PM2.5, and innovatively explored the potential mechanisms of PAEs and OPEs affecting human reproductive health using network toxicology.

The beta isoform of 90 kDa heat shock protein (Hsp90β) plays a critical role in maintaining cellular proteostasis by assisting in the folding and refolding of proteins, which is essential for both normal cellular function and stress response. It is constitutively expressed in mammalian cells, differentiating it from the inducible Hsp90α isoform. Hsp90β's involvement in diverse cellular processes, such as signal transduction, cell cycle control, and apoptosis, underscores its significant role in various diseases, including cancer and neurodegenerative disorders. The isoform-specific functions of Hsp90β and its interaction with unique client proteins make it a promising target for therapeutic intervention, particularly in the development of selective inhibitors that avoid the adverse effects observed with pan-Hsp90 inhibitors. This review delves into the structural and functional intricacies of Hsp90β, its role in disease, and the potential for selective drug development.

Deciphering the functionality and dynamics of brain networks across different regions and age groups in non-human primates (NHPs) is crucial for understanding the evolution of human cognition as well as the processes underlying brain pathogenesis. However, systemic delineation of the cellular composition and molecular connections among multiple brain regions and their alterations induced by aging in NHPs remain largely unresolved.

In this study, we performed single-nucleus RNA sequencing on 39 samples collected from 10 brain regions of two young and two aged rhesus macaques using the DNBelab C4 system. Validation of protein expression of signatures specific to particular cell types, brain regions, and aging was conducted through a series of immunofluorescence and immunohistochemistry staining experiments. Loss-of-function experiments mediated by short hairpin RNA (shRNA) targeting two age-related genes (i.e., VSNL1 and HPCAL4) were performed in U251 glioma cells to verify their aging effects. Senescence-associated beta-galactosidase (SA-β-gal) staining and quantitative PCR (qPCR) of senescence marker genes were employed to assess cellular senescence in U251 cells.

We have established a large-scale cell atlas encompassing over 330,000 cells for the rhesus macaque brain. Our analysis identified numerous gene expression signatures that were specific to particular cell types, subtypes, brain regions, and aging. These datasets greatly expand our knowledge of primate brain organization and highlight the potential involvement of specific molecular and cellular components in both the regionalization and functional integrity of the brain. Our analysis also disclosed extensive transcriptional alterations and cell-cell connections across brain regions in the aging macaques. Finally, by examining the heritability enrichment of human complex traits and diseases, we determined that neurological traits were significantly enriched in neuronal cells and multiple regions with aging-relevant gene expression signatures, while immune-related traits exhibited pronounced enrichment in microglia.

Taken together, our study presents a valuable resource for investigating the cellular and molecular architecture of the primate nervous system, thereby expanding our understanding of the mechanisms underlying brain function, aging, and disease.

Understanding how proteins in different mammalian tissues are regulated is central to biology. Protein abundance, turnover, and post-translational modifications such as phosphorylation are key factors that determine tissue-specific proteome properties. However, these properties are challenging to study across tissues and remain poorly understood. Here, we present Turnover-PPT, a comprehensive resource mapping the abundance and lifetime of 11,000 proteins and 40,000 phosphosites in eight mouse tissues and various brain regions using advanced proteomics and stable isotope labeling. We reveal tissue-specific short- and long-lived proteins, strong correlations between interacting protein lifetimes, and distinct impacts of phosphorylation on protein turnover. Notably, we discover a remarkable pattern of turnover changes for peroxisome proteins in specific tissues and that phosphorylation regulates the stability of neurodegeneration-related proteins, such as Tau and α-synuclein. Thus, Turnover-PPT provides fundamental insights into protein stability, tissue dynamic proteotypes, and functional protein phosphorylation and is accessible via an interactive web-based portal at https://yslproteomics.shinyapps.io/tissuePPT.

Differential distribution of neonicotinoids (NEOs) in albumen, yolk, and eggshell is a critical factor influencing their bio-accumulative behavior and the subsequent human health risks. However, there is currently no relevant research available. We collected 62 egg samples from 31 sampling sites across China and analyzed the concentrations and characteristics of 12 parents NEOs (p-NEOs) and 8 metabolites NEOs (m-NEOs) in albumen, yolk, and eggshell. NEOs were frequently detected in differentiated egg matrices, with the highest concentrations observed in Northeast China. The concentrations of m-NEOs were generally higher than those of p-NEOs. A positive correlation was found between the distribution of m-NEOs in albumen and their logKow (p < 0.05). Dietary intake exposure posed a higher risk of NEOs to children and females. The toxicity equivalence (TEQ) of 5-hydroxy-imidacloprid and thiacloprid-amide, in interaction with androgen and estrogen receptors, was higher compared to other NEOs. Network toxicology and molecular docking indicated that AKT1 may serve as the core target for reproductive toxicity induced by dinotefuran, cycloxaprid, and nitenpyram exposure. This study provided valuable data on the occurrence, differential distribution, and reproductive exposure risk of NEOs in eggs for the first time. These findings are instrumental for future management policies concerning the environmental behavior and health effects of NEOs.

Curcumol, a bioactive sesquiterpenoid extracted from traditional Chinese medicine (TCM), has demonstrated potential in overcoming tumor drug resistance. However, its mechanisms in reversing drug resistance, particularly in hepatocellular carcinoma (HCC) resistant to sorafenib, are not yet fully elucidated. This study aims to explore the molecular mechanisms by which curcumol reverses sorafenib resistance in HCC using a combination of network pharmacology, molecular docking, and in vivo and in vitro experiments.

We identified curcumol targets and genes associated with sorafenib-resistant HCC, resulting in a set of overlapping targets. These intersection targets underwent enrichment analysis using DAVID, and a protein-protein interaction (PPI) network was constructed via the STRING database and Cytoscape. Molecular docking confirmed the binding of curcumol to core targets. In vitro assays, including CCK-8, colony formation assay, apoptosis detection, wound healing, and Transwell assays, evaluated curcumol's effects on sorafenib-resistant HCC cells. Western blotting assessed the impact on PI3K/AKT and JAK/STAT3 signaling pathways. Additionally, a sorafenib-resistant HCC xenograft mouse model was established to observe the in vivo efficacy of curcumol combined with sorafenib.

We identified 117 potential targets for curcumol in reversing sorafenib resistance in HCC. Among them, five core targets-ALB, STAT3, HSP90AA1, HSP90AB1, and SRC-showed strong binding affinity with curcumol. KEGG pathway analysis of the intersecting genes highlighted significant involvement of the PI3K/AKT, JAK/STAT3, Ras, Rap1, HIF-1, FoxO, and mTOR signaling pathways. In vitro experiments revealed that curcumol significantly enhanced the sensitivity of sorafenib-resistant HCC cells to sorafenib, inhibiting cell proliferation, invasion, and migration while promoting apoptosis. In vivo studies further confirmed that curcumol combined with sorafenib effectively inhibited tumor growth in sorafenib-resistant HCC models.

This study provides compelling evidence that curcumol can reverse sorafenib resistance in HCC by modulating multiple signaling pathways, including PI3K/AKT and JAK/STAT3 pathways. Our findings suggest that curcumol holds promise as a novel therapeutic agent for overcoming drug resistance in HCC, offering a new avenue for clinical intervention.

The fruit of Sinopodophyllum hexandrum (FSH) is derived from Sinopodophyllum hexandrum (Royle) Ying, a plant belonging to the family Berberidaceae of the order Ranunculaceae. It is mainly distributed in the Himalayan alpine region, and born in the understory of forests, and wetlands at the edge of forests, thickets or grasses. FSH grows at an altitude of 2,200-4,300 meters above sea level. Its main pharmacological activities include anti-tumor, anti-inflammation, analgesia, heat clearing and detoxification. In the current experiment, ultra-performance liquid chromatography quadrupole time-of-flight mass spectrometry (UPLC-Q-TOF-MS) was adopted for investigating the chemical components contained in FSH, their transformation patterns in vivo and the potential anti-tumor components, so as to provide an experimental basis for the utilization and development of the resources of FSH.

The chemical components of FSH and their transformation patterns in vivo were investigated by UPLC-Q-TOF-MS, and the potential anti-tumor active components were predicted from the in vivo transformed components of FSH by using a network pharmacology approach.

Totally 85 chemical components were identified in FSH, among which, 61 were flavonoids and 24 were lignans. The above components were transformed in vivo, including 36 prototype components and 13 transformed products. As revealed by the results of network pharmacology on the prediction of anti-tumor components of FSH, 17 compounds such as Kaempferol, Uralenol, and 8-Prenylquercetin in FSH were used as the potential anti-tumor components.

In this study, the chemical composition, in vivo transformed components of FSH and their metabolites are investigated, and the in vivo transformed components are predicted to have potential anti-tumor pharmacological activities. This study provides the experimental bases for the utilization and development of the resources of FSH.

Particulate matter coexists with persistent organic pollutants (POPs) in the atmosphere, which can enter the human body by accompanying inhalable particles in the respiratory tract. Photochemical conversion further alters the chemical composition of the precursor particles and secondary products. This study investigated the effects of nanoscale iron-chlorobenzene mixtures and their photochemical conversion products on early lung development in rat pups. Using network toxicology and animal experiments, we constructed a compound toxicity-target network and developed air exposure models. This study revealed that both pollutants, before and after photochemical conversion, bound to the aryl hydrocarbon receptor (AhR), increased oxidative stress, altered lung tissue morphology, and reduce inflammatory factor expression. Rat pups were highly sensitive to pollutants during critical stages of lung development. However, no significant differences in oxidative stress or inflammation were observed between the pollutants, likely because of immature lung tissues. Once tissue damage reached a threshold, the response to increasing pollutant concentrations diminished. This study provides insights into atmospheric pollutant toxicity and scientific evidence for the risk assessment of dioxin-like nanoscale mixtures.

The present study aimed to investigate the cardioprotective effects of acteoside (AC) on myocardial ischemia‑reperfusion injury (MIRI). To meet this aim, a network pharmacological analysis was conducted to search for key genes and signaling pathways associated with AC and MIRI. The infarct size of the rat heart was evaluated using 2,3,5‑triphenyltetrazolium chloride staining, and the serum levels of creatine kinase MB isoenzyme, cardiac troponin I, malondialdehyde and superoxide dismutase were subsequently detected in an in vivo experiment. The inhibitory effect of AC on oxidative stress was further confirmed by assessing the intracellular accumulation of reactive oxygen species (ROS). Hematoxylin and eosin staining was subsequently carried out to observe cardiac histopathological damage. The anti‑apoptotic effects of AC were determined using terminal deoxynucleotidyl‑transferase‑mediated dUTP nick end labeling assay and Hoechst 33342 staining, and the expression levels of apoptosis‑associated proteins in the myocardial tissue were assessed using immunohistochemical analysis. In addition, cell viability was determined using a Cell Counting Kit‑8 assay, and the expression levels of key target proteins associated with AC and MIRI were detected by western blot analysis. The results suggested that pretreatment with AC could mitigate MIRI‑induced myocardial damage, oxidative stress and apoptosis. The anti‑apoptotic effects of AC were associated with elevated Bcl‑2 levels, and reduced caspase‑3 and Bax expression levels in myocardial tissue. In vitro, AC pretreatment both led to an increased rate of cell survival and alleviated oxidative stress, as demonstrated by a decreased level of intracellular ROS accumulation. Moreover, guided by the network pharmacological analysis, heat‑shock protein 90AA1 (HSP90AA1) and the phosphoinositide 3‑kinase (PI3K)/serine‑threonine protein kinase (Akt) signaling pathway emerged as key targets for the action of AC against MIRI. Furthermore, the western blot analysis results showed that pretreatment with AC led to a significant increase in the activity of the PI3K/Akt signaling pathway, in addition to increased expression levels of glycogen synthase kinase‑3β and HSP90AA1. Taken together, the findings of the present study revealed that AC may exert cardioprotective effects on MIRI through suppressing apoptosis and oxidative stress by regulating the expression and activity of key proteins.

Non-alcoholic steatohepatitis (NASH) poses a serious threat to human health. Alisol B 23-Acetate (AB23A) has shown beneficial effects on NASH, but its mechanism of action remains unclear. We conducted in vitro experiments by inducing L02 cell damage with free fatty acids (FFA) and administering various concentrations of AB23A. We found that AB23A intervention reduced triglyceride (TG) levels in FFA-induced L02 cells and improved cellular steatosis. Transcriptomic analysis revealed that AB23A intervention significantly downregulated glucose-regulated protein 94 (Grp94), indicating that AB23A primarily regulates the protein processing pathway in the endoplasmic reticulum. Within this pathway, AB23A intervention also significantly downregulated endoplasmic reticulum stress (ERS)-related genes (PERK, eIF2α, ATF4) and ER-associated degradation (ERAD)-related genes (FBXO2, DERL, HSP90AA1). When we silenced GRP94, the regulatory effects of AB23A on TG levels, cellular steatosis, ERS-related proteins (p-PERK/PERK, p-eIF2α/eIF2α, ATF4), and ERAD-related proteins (FBXO2, DERL, HSP90α) disappeared. In vivo, AB23A intervention promoted recovery of the liver index in NASH mice, reduced hepatic inflammatory infiltration and lipid deposition, improved serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST) activities, and reduced liver TG levels. RT-qPCR and Western blot results demonstrated that AB23A intervention dose-dependently downregulated the gene and protein expression of GRP94 and ERS- and ERAD-related factors. There was no significant difference between the effects of high-dose AB23A intervention and PPC intervention. This study demonstrated, through both in vitro and in vivo experiments, that AB23A improves hepatic steatosis. This effect may be related to the downregulation of GRP94, which suppresses ERS and ERAD, thereby restoring ER homeostasis.

Manzamine A (MA), a bioactive compound derived from the marine sponge Haliclona sp., shows considerable therapeutic potential, particularly in the treatment of various cancer types. Extracted with acetone and purified through chromatography, MA exhibits a bioavailability of 20.6% when administered orally in rats, underscoring its feasibility for therapeutic use. This compound disrupts key cellular mechanisms essential for cancer progression, including microtubule dynamics and DNA replication enzymes, demonstrating strong anti-proliferative effects against multiple cancer cell lines while sparing normal cells. Additionally, network pharmacology and molecular docking studies reveal MA's interactions with important targets related to lung cancer progression, such as EGFR and SRC, bolstering its potential as a novel anti-lung cancer agent. Pathway analyses further indicate that MA influences critical signaling pathways involved in tumor growth and metastasis. Given the urgent need for effective treatments against drug-resistant cancers and the limited toxicity profile of MA, further exploration of its pharmacological benefits and mechanism could pave the way for new therapeutic strategies in lung cancer.

The teleost scale is a unique calcified tissue that contains osteoclasts, osteoblasts, osteocytes and the bone matrix, similar to mammalian bone. Here, the effects of low-intensity pulsed ultrasound (LIPUS) on osteoblasts and osteoclasts in goldfish scales were investigated. Scales were treated with LIPUS, which is equivalent to use under clinical conditions (30 mW/cm2 for 20 min), then cultured at 15˚C. Alkaline phosphatase activity, a marker of osteoblasts, or tartrate-resistant acid phosphatase (TRAP) activity, a marker of osteoclasts was measured. The gene expression profile was examined using RNA-sequencing. Gene network and biological function analyses were performed using the Ingenuity® Pathways Knowledge Base. A single exposure of LIPUS significantly increased ALP activity but did not affect TRAP activity. These data indicated that LIPUS induced osteoblastic activation in goldfish scales. Using RNA-sequencing, numerous genes that were significantly and differentially expressed 3, 6, and 24 h after LIPUS exposure were observed. Ingenuity® pathway analysis demonstrated that three gene networks, GN-3h, GN-6h, and GN-24h, were obtained from upregulated genes at 3, 6 and 24 h culture, respectively, and included several genes associated with osteoblast differentiation, such as protein kinase D1, prostaglandin-endoperoxide synthase 2, TNFRSF11B (tumor necrosis factor receptor superfamily, member 11b) and WNT3A (Wnt family member 3A). A significant upregulation of expression levels of these genes in scales treated with LIPUS was confirmed by reverse transcription-quantitative polymerase chain reaction. These results contribute to elucidating the molecular mechanisms of osteoblast activation induced by LIPUS.

The heat shock protein 90 (Hsp90) family of molecular chaperones mediates the folding and activation of ~ 400 client proteins, many of which contribute to oncogenesis. As a result, Hsp90 pan-inhibitors, which inhibit all four Hsp90 isoforms, have been investigated in the clinic for the treatment of cancer. Unfortunately, detrimental side effects were observed and hindered the clinical development of pan-Hsp90 inhibitors. The two most common on-target toxicities, cardio-toxicity and ocular-toxicity, have been attributed to inhibition of the Hsp90α isoform. As an alternative strategy, Hsp90β-selective inhibitors have been developed, which have shown promising anti-cancer activity in vitro and in vivo in combination with immune-checkpoint blockade therapy. This study aims to assess the potential risks of cardio-toxicity and ocular-toxicity exhibited by Hsp90β-selective inhibitors in vitro. In summary, the Hsp90β-selective NDNB1182 was found to avoid the cardio- and ocular-toxicity typical of Hsp90 pan-inhibitors (e.g. 17-AAG), providing a promising path toward the generation of isoform-selective Hsp90 inhibitors.

Eupatilin, a natural bioactive flavone, is the active ingredient in traditional Chinese medicine Artemisia argyi Levl. et Vant. To enhance the antitumor effect of eupatilin, we designed a series of novel eupatilin-Mannich derivatives and investigated antitumor activity against several human cancer cell lines, including gastric cancer cells (AGS), esophageal cancer cells (Eca-109), and breast cancer cells (MDA-MB-231). Among all derivatives, the majority demonstrated superior antitumor activity compared to eupatilin, with compound 3d exhibiting the most effective antitumor activity against AGS cells. Furthermore, compound 3d effectively inhibited colony formation and migration of AGS cells. Network pharmacology combined with molecular docking studies indicated that compound 3d exerts antitumor activity by targeting the Hsp90AA1 and multiple signaling pathways. In addition, the Western blot experiment results showed that compound 3d reduced the expression of Hsp90AA1 in AGS cells, indicating that Hsp90AA1 may be the potential target of compound 3d. In summary, several novel eupatilin derivatives were prepared via the Mannich reaction, representing the first structure modification study of eupatilin. The mechanism of action of compound 3d was estimated through cell experiments, network pharmacology, molecular docking, and Western blot experiments, to provide lead compounds for the discovery of natural product-based antitumor candidates.

Sphingosine kinases (SPHKs) are essential enzymes that catalyze the phosphorylation of sphingosine to produce sphingosine-1-phosphate (S1P), which plays pivotal roles in inflammation and immune regulation. In this study, genome-wide association analysis (GWAS) identified the Ydsphk1 gene as closely associated with the resistance of yellow drum (Nibea albiflora) to Vibrio harveyi. Structural prediction showed that YDSPHK1 contains a typical diacylglycerol kinase catalytic (DAGKc) domain (154-291 aa). By constructing and transfecting Ydsphk1 expression plasmids into yellow drum kidney cells, we found that YDSPHK1 is localized in the cytoplasm. Subsequent RNA-Seq analysis of an overexpression plasmid identified 25 differentially expressed genes (DEGs), including 13 upregulated and 12 downregulated. Notably, nsun5 and hsp90aa1 were significantly upregulated, while Nfkbia and hmox1 were downregulated. Promoter analysis indicated that the core regulatory regions of Ydsphk1 are located between -1931~-1679 bp and -419~+92 bp, with two predicted TFAP2A binding sites in the -419~+92 bp region. Further studies demonstrated that varying concentrations of TFAP2A significantly reduced Ydsphk1 promoter activity. These findings underscore the pivotal role of Ydsphk1 in regulating immune responses in yellow drum, particularly through its impact on key immune-related genes and pathways such as NF-κB signaling and ferroptosis. The identification of Ydsphk1 as a mediator of immune regulation provides valuable insights into the molecular mechanisms of immune defense and highlights its potential as a target for enhancing pathogen resistance in aquaculture practices. This study lays a strong foundation for future research aimed at developing innovative strategies for disease management in aquaculture species.

Disruptions in proteostasis are recognized as key drivers in cerebro- and cardiovascular disease progression. Heat shock proteins (HSPs), essential for maintaining protein stability and cellular homeostasis, are pivotal in neuroperotection. Consequently, deepening the understanding the role of HSPs in ischemic stroke (IS) risk is crucial for identifying novel therapeutic targets and advancing neuroprotective strategies.

Our objective was to examine the potential correlation between single nucleotide polymorphisms (SNPs) in genes that encode members of the Heat shock protein 90 (HSP90), small heat shock proteins (HSPB), and heat shock factors (HSF) families, and the risk and clinical characteristics of IS.

953 IS patients and 1265 controls from Central Russia were genotyped for nine SNPs in genes encoding HSP90AA1, HSFs, and HSPBs using the MassArray-4 system and probe-based polymerase chain reaction (PCR).

In smokers, SNP rs1133026 HSPB8 increased the risk of IS (risk allele A, odds ratio (OR) = 1.43, 95% Confidence Interval (CI) 1.02-2.02, p = 0.035), and rs556439 HSF2 increased the brain infarct size (risk allele A, p = 0.02). In non-smokers, SNPs rs4279640 HSF1 (protective allele T, OR = 0.58, 95% CI 0.37-0.92, p = 0.02) and rs4264324 HSP90AA1 (protective allele C, OR = 0.11, 95% CI 0.01-0.78, p = 0.001) lowered the risk of recurrent stroke; SNP rs7303637 HSPB8 increased the age of onset of IS (protective allele T, p = 0.04). In patients with body mass index (BMI) ≥25, SNPs rs556439 HSF2 (risk allele A, OR = 1.33, 95% CI 1.04-1.69, p = 0.02) and rs549302 HSF2 (risk allele G, OR = 1.34, 95% CI 1.02-1.75, p = 0.03) were linked to a higher risk of IS.

The primary molecular mechanisms through which the studied SNPs contribute to IS pathogenesis were found to be the regulation of cell death, inflammatory and oxidative stress responses.

Objective: β-Sitosterol, which is derived from Vladimiriae Radix (VR), is used for the treatment of rheumatoid arthritis (RA), but the pharmacological mechanisms through which β-sitosterol affects RA have not been fully elucidated. Methods: Through the Traditional Chinese Medicine Systems Pharmacology and Analysis (TCMSP), PubChem, SwissTargetPrediction, GeneCards, DisGeNET, and OMIM databases, "β-sitosterol-RA"-related genes were obtained, and a target protein interaction network (protein-protein interaction [PPI]) was constructed. Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses were carried out for the intersecting genes. Discovery Studio 2019 software was used to perform molecular docking on MMP9, CASP3, HSP90AA1, SRC, EGFR, and ALB genes. β-Sitosterol was co-cultured with MH7A cells in three experimental groups: control group (DMSO), positive drug group (methotrexate, 80 μmol/L), and drug intervention group (10, 20, 40, 80, and 160 μmol/L β-sitosterol). The CCK8 method was used to investigate the inhibitory effect of β-sitosterol on the proliferation of MH7A cells. RT-PCR was used to analyze the mRNA expression of the abovementioned core targets. Results: A total of 41 genes associated with β-sitosterol and RA were obtained, mainly involving the FoxO signaling pathway and PI3K/AKT signaling pathway. The molecular docking results suggested that β-sitosterol could bind effectively to six core targets. The experimental results showed that β-sitosterol could significantly inhibit the excessive proliferation of MH7A cells (p< 0.05). The RT-PCR results showed that the expression of MMP9, HSP90AA1, SRC, EGFR, and ALB core genes in the control group was significantly upregulated, while the CASP3 gene was downregulated. Compared to the control group, the mRNA expression of MMP9, HSP90AA1, SRC, EGFR, and ALB decreased (p< 0.01), while the apoptosis-related gene CASP3 increased in both the drug intervention (80 μmol/L β-sitosterol) and positive drug groups (80 μmol/L methotrexate). Conclusion: Hence, β-sitosterol could contribute to the inhibition of RA by modulating cell proliferation and regulating the aforementioned six core proteins, potentially through the regulation of the FoxO and PI3K/AKT signaling pathways.

Hepatocellular carcinoma (HCC), the predominant form of liver cancer, is marked by limited therapeutic success and unfavorable prognoses. Its etiology varies regionally, with hepatitis B virus (HBV) being the predominant cause in most of Asia. Immunogenic cell death (ICD), a specific type of cell death, has been extensively linked to HCC treatment in numerous studies. This research aims to explore the significance of ICD-related genes in the Asian HCC cohort, potentially offering novel approaches for HCC management.

We initially obtained transcriptomic and clinical data pertinent to Asian HCC from the TCGA database. Subsequently, we classified the samples into distinct subgroups according to ICD gene expression levels and conducted analyses of the tumor microenvironment and enrichment. Furthermore, we randomly allocated the samples into training and testing cohorts, thereafter developing and validating an ICD gene-based prognostic model tailored for the Asian HCC population.

The Asian HCC samples were categorized into two subgroups: high and low ICD expression. In the low ICD expression group, we observed diminished infiltration of immune and stromal cells, increased tumor purity, and improved prognosis. Moreover, we devised a 5-gene risk-score prognostic model comprising BAX, CASP8, HMGB1, HSP90AA1, and IL6, demonstrating efficacy in prognostic predictions for the Asian HCC cohort.

Our investigation unveils new perspectives on the influence of ICDs within Asian HCC populations. The derived 5-gene risk-score prognostic model, based on ICDs, not only serves as a tool for assessing prognosis in Asian HCC cases but also suggests potential therapeutic targets for HCC treatment.

Doxorubicin (DOX), an anthracycline group antibiotic, has been extensively employed as a potent chemotherapeutic agent for treating solid and hematopoietic tumors in humans. Amid exposure to diverse stress conditions, living organisms swiftly initiate the synthesis of heat shock proteins (HSPs), a set of highly conserved proteins. Tannic acid (TA) has garnered increasing study attention due to its special chemical properties, health benefits, and wide availability. This study's primary aim is to elucidate the impact of DOX and TA on the expression levels of Hsp90aa1, Hspa1a, Hspa4, and Hspa5 in the spleen tissues of rats. Sprague Dawley rats (Rattus norvegicus, male, 9-10 weeks old, 180 ± 20 g) were randomly divided into 4 groups: control, DOX (30 mg/kg cumulative), TA (50 mg/kg), and DOX + TA (5 mg/kg and 50 mg/kg, respectively). Subsequently, spleen tissues were collected from rats, and complementary DNA libraries were generated after the application process. The quantitative real-time PCR method was used to detect and quantify the mRNA expression changes of the Hsp90aa1, Hspa1a, Hspa4, and Hspa5 genes our results showed that the mRNA expressions of the targeted genes were up-regulated in rat spleen tissues exposed to DOX. However, this increase was remarkably suppressed by TA treatment. These findings suggest that TA may serve as a protective agent, mitigating the toxic effects of DOX in the rat spleen.

Indole-3-acetic acid (IAA), an indole analog produced by intestinal microorganisms metabolizing tryptophan, has anti-inflammatory and antioxidant properties and thus has potential applications in ovarian protection, although the exact mechanism is unknown. The present study preliminarily investigated the pharmacological mechanism of IAA in alleviating diminished ovarian reserve (DOR) by network pharmacology and molecular docking.

Relevant target proteins of IAA were searched in SwissTargetPrediction, PharmMapper, TargetNet, BATMAN-TCM, and SuperPred databases. The potential targets of DOR were obtained from GeneCards, DisGenet, OMIM, and Drugbank databases. Both common targets were then imported into the String website to construct a PPI network, and these targets were analyzed for GO and KEGG enrichment. Finally, we utilized molecular docking to validate the possible binding conformations between IAA and the candidate targets. We used in vitro experiments to preliminarily investigate the effects of IAA on DOR.

We obtained 88 potential targets for IAA and DOR interaction. We received 16 pivotal targets by constructed protein interaction screening. KEGG enrichment analysis mainly included the AGE-RAGE signaling pathway, IL-17 signaling pathway, Chemical carcinogenesis-reactive oxygen species in diabetic complications, etc. GO functional analysis showed that IAA treatment of DOR may involve biological processes such as response to external stimuli, hypoxia, gene expression, and regulation of enzyme activity. Molecular docking and in vitro experiments further revealed the potential effects of IAA on MMP2, TNF-α, AKT1, HSP90AA1, and NF-κ B.

We preliminarily revealed the potential protective effects of IAA against DOR through multiple targets and pathways, which provides a new research strategy for the molecular mechanism of IAA to alleviate DOR in the future. However, further studies need to demonstrate whether IAA can be used as a compound to prevent and treat DOR.

Exposure to exogenous and endogenous stress is associated with the intracellular accumulation of aberrant unfolded and misfolded proteins. In eukaryotic cells, protein homeostasis within membrane-bound organelles is regulated by specialized signaling pathways, with the unfolded protein response in the endoplasmic reticulum serving as a foundational example. Yet, it is unclear if a similar surveillance mechanism exists in the nucleus. Here we leveraged engineered proteins called destabilizing domains to acutely expose mammalian cells to nuclear- or cytosolic- localized unfolded protein. We show that the appearance of unfolded protein in either compartment engages a common transcriptional response associated with the transcription factors Nrf1 and Nrf2. Uniquely, only in the nucleus does unfolded protein activate a robust p53-driven transcriptional response and a transient p53-independent cell cycle delay. These studies highlight the distinct effects of localized protein folding stress and the unique protein quality control environment of the nucleus.

Isoscopoletin is one of the primary metabolites of natural product scoparone, which was reported to against tumor proliferation. The aim of this study was to explore the mechanism of isoscopoletin against hepatocellular carcinoma (HCC).

Transcriptomics was used to reveal the possible pathways of isoscopoletin against HCC in vitro. The potential targets of isoscopoletin against HCC through affecting glycolysis were analyzed by network pharmacology, then the potential binding abilities of isoscopoletin to glycolysis-related proteins were initially verified by high throughput virtual molecular docking. The affinities of isoscopoletin for glycolysis-related proteins were assayed using microscale thermophoresis (MST), which was reverse-validated by inhibiting the binding ability of isoscopoletin to GPD2. Glucose consumption and lactate production were examined to evaluate the effects of isoscopoletin on intracellular glycolysis, and the regulation of glycolysis-related targets by isoscopoletin was detected using RT-qPCR and ELISA kits.

The results of transcriptomics showed that the differentially expressed genes (DEGs) were mainly enriched in glycolysis and other metabolic-related pathways. Network pharmacology and molecular docking revealed that GPD2, GPI, HSP90AA1 and PGK2 were the core targets in the glycolysis process of isoscopoletin against HCC. MST results showed that there was a strong affinity between isoscopoletin and GPD2, GPI, Hsp90α and PGK2. In vitro results showed that isoscopoletin inhibited glucose consumption and lactate production, while regulating the levels of glycolysis-related proteins.

This study suggests that isoscopoletin may exist an anti-tumor effect by regulating the glycolysis-related proteins GPD2, GPI, Hsp90α and PGK2, inhibiting the glycolysis process in HCC cells, then blocking the energy supply of tumor cells.

Heat shock protein 90 alpha (Hsp90α) is an abundantly expressed and evolutionarily conserved molecular chaperone. Hsp90α is the inducible Hsp90 isoform, and its expression and secretion extracellularly (eHsp90α) can be triggered in response to a variety of cellular stresses to protect/activate client proteins and to facilitate cellular adjustment to the stress. As a result, cancers often have high expression levels of intracellular and extracellular (plasma) Hsp90α, allowing them to support their oncogenesis and progression. In fact, (e)Hsp90α has been implicated in regulating processes such as cell signaling transduction, DNA repair, promotion of the Epithelial-to-Mesenchymal Transition (EMT), promotion of angiogenesis, immune response, and cell migration. Hsp90α levels have been correlated with cancer progression and severity in several cancers, indicating that it may be a useful biomarker or drug-target for cancer. To date, the development of intracellular Hsp90α-targeted therapies include standard N-terminal ATP-competitive inhibitors and allosteric regulators that bind to Hsp90α's middle or C-terminal domain. On-target toxicities and dosing complications as a result of Hsp90α inhibition has driven the development of eHsp90α-targeted therapies. Examples include anti-Hsp90α monoclonal antibodies and cell-impermeable Hsp90α small molecule inhibitors. This review aims to discuss the many roles Hsp90α plays in cancer progression with a focus on the current development of Hsp90α-targeted therapies.

Paeoniflorin (Pae) can improve diabetes mellitus (DM), especially endothelial dysfunction induced by high glucose (HG). Molecularly, the mechanism pertinent to Pae and DM lacks further in-depth research. Hence, this study determined the molecular mechanism of Pae in treating DM through network pharmacology. The target of Pae was analyzed by TCMSP database, and DM-related genes were dissected by Genecards database and Omim database. PPI network was constructed for cross targets through Cytoscape 3.9.1 and STRING platform. GO and KEGG analyses were carried out on the cross targets. Protein molecular docking verification was completed by AutoDockTools and Pymol programs. Human umbilical vein endothelial cells (HUVECs) were separately treated with HG, Pae (5, 10, 20 μM) and/or HRAS overexpression plasmids (oe-HRAS). The cell viability, apoptosis and the protein expressions of HRAS and Ras-GTP were evaluated. There were 50 cross targets between Pae and DM, and VEGFA, EGFR, HRAS, SRC and HSP90AA1 were the key genes identified by PPI network analysis. GO and KEGG analyses revealed signal paths such as Rap1 and Ras. Molecular docking results confirmed that Pae had a good binding ability with key genes. In HG-treated HUVECs, Pae dose-dependently facilitated cell viability, attenuated cell apoptosis, and dwindled the expressions of HRAS and Ras-GTP, but these effects of Pae were reversed by oe-HRAS. In conclusion, Pae regulates the viability and apoptosis of HG-treated HUVECs by inhibiting the expression of HRAS.

Doxorubicin (Dox) has been limited in clinical application due to its cardiac toxicity that varies with the dose. This study aimed to explore how Rhein modulates Dox-induced myocardial toxicity. The general condition and echocardiographic changes of mice were observed to evaluate cardiac function and structure, with myocardial cell injury and apoptosis checked by TUNEL and HE staining. The ELISA assessed markers of myocardial damage and inflammation. The TCMSP and SwissTargetPrediction databases were used to retrieve Rhein's targets while GeneCards was used to find genes related to Dox-induced myocardial injury. Intersection genes were analyzed by Protein-Protein Interaction Networks. The core network genes underwent GO and KEGG enrichment analysis using R software. Western blot was used to detect protein expression. Compared to the Dox group, there was no remarkable difference in heart mass /body mass ratio in the Rhein+Dox group. However, heart mass/tibia length increased. Mice in the Rhein+Dox group had significantly increased LVEF, LVPWs, and LVFS compared to those in the Dox group. Myocardial cell damage, inflammation, and apoptosis significantly reduced in the Rhein+Dox group compared to the model group. Eleven core network genes were selected. Further, Rhein+Dox group showed significantly downregulated expression of p38/p-p38, HSP90AA1, c-Jun/p-c-Jun, c-Fos/p-c-Fos, Bax, and cleaved-caspase-3/caspase-3 while Bcl-2 expression significantly upregulated compared to the Dox group. The study suggests that Rhein mediates cardioprotection against Dox-induced myocardial injury, at least partly, by influencing multiple core genes in the MAPK signaling pathway to inhibit myocardial cell apoptosis.

This study is aimed at exploring the potential mechanisms of melatonin (MT) in treating chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) using network pharmacology and experimental study. The target genes of MT were acquired from the Swiss Target Prediction, SuperPred, SEA, and PharmMapper databases, and the CP/CPPS targets were collected based on OMIM, DisGeNET, and GeneCards databases. The intersection of MT and CP/CPPS target genes was analyzed. A PPI network was constructed using Cytoscape to identify core targets. The shared targets underwent GO and KEGG enrichment analyses by Using R software. Molecular docking of MT with core targets was performed using AutoDock and PyMOL. GROMACS software was used for molecular dynamics simulation. And using cell experiments to verify the potential effect of MT in CP/CPPS. Network pharmacology analysis reveals 284 shared targets between MT and CP/CPPS, with AKT1, SRC, HSP90AA1, PTGS2, BCL2L1, ALB, CASP3, NFKB1, HIF1A, and ESR1 identified as key targets. Enrichment analysis indicates that MT affects CP/CPPS through various biological processes, and pathway analysis emphasizes the significance of PI3K-Akt, MAPK, Ras, FoxO, HIF-1, EGFR, and apoptosis pathways. Molecular docking confirms strong binding between MT and core targets. It is worth noting that the molecular dynamics simulation showed that the average binding free energy of AKT1, PTGS2, ALB, HSP90AA1 proteins, and MT was - 26.15, - 29.48, - 18.59, and - 20.09 kcal/mol, respectively. These results indicated that AKT1, PTGS2, ALB, and HSP90AA1 proteins were strongly bound to MT. Cell experiments demonstrate that MT can inhibit the secretion of IL-1β, IL-6, and TNF-α in LPS-induced RWPE-1 cells, alleviate inflammation, and suppress cell apoptosis and oxidative stress. Network pharmacology, molecular docking, molecular dynamics simulation, and cell experiments showed that MT could play a role in CP/CPPS by regulating multiple targets and pathways. These findings provide an important scientific basis for further exploration of the molecular mechanism and clinical application of MT in CP/CPPS treatment and are expected to provide new ideas and directions for the development of novel therapeutic strategies.

Understanding how proteins in different mammalian tissues are regulated is central to biology. Protein abundance, turnover, and post-translational modifications like phosphorylation, are key factors that determine tissue-specific proteome properties. However, these properties are challenging to study across tissues and remain poorly understood. Here, we present Turnover-PPT, a comprehensive resource mapping the abundance and lifetime of 11,000 proteins and 40,000 phosphosites across eight mouse tissues and various brain regions, using advanced proteomics and stable isotope labeling. We revealed tissue-specific short- and long-lived proteins, strong correlations between interacting protein lifetimes, and distinct impacts of phosphorylation on protein turnover. Notably, we discovered that peroxisomes are regulated by protein turnover across tissues, and that phosphorylation regulates the stability of neurodegeneration-related proteins, such as Tau and α-synuclein. Thus, Turnover-PPT provides new fundamental insights into protein stability, tissue dynamic proteotypes, and the role of protein phosphorylation, and is accessible via an interactive web-based portal at https://yslproteomics.shinyapps.io/tissuePPT.

As one of the main occupational hazards, welding fumes can cause oxidative damage and induce series of diseases, such as COPD or asthma. To clarify the effects of the metal fume ultrafine particulates (MF-UFPs) of welding fumes on oxidative damage, UFPs were collected by melt inert gas (MIG) and manual metal arc (MMA) welding, and the composition was confirmed. Human bronchial epithelial 16HBE cells were treated with 0-1000 µg/cm2 MF-UFPs to analyse the cytotoxicity, oxidative stress and cytokines. The protein and mRNA expression of Keap1-Nrf-2/antioxidant response elements (AREs) signalling pathway components were also analysed. After 4 h of treatment, the cell viability decreased 25% after 33.85 and 32.81 µg/cm2 MIG/MMA-UFPs treated. The intracellular ATP concentrations were also decreased significantly, while LDH leakage was increased. The decreased mitochondrial membrane potential and increased ROS suggested the occurrence of oxidative damage, and the results of proteome profiling arrays also showed a significant increase in IL-6 and IL-8. The expression of AREs which related to antioxidant and anti-inflammatory were also increased. These results indicate that the MF-UFPs can cause oxidative stress in 16HBE cells and activate the Nrf-2/ARE signalling pathway to against oxidative damage.