BPG is committed to discovery and dissemination of knowledge
Letter to the Editor
Copyright ©The Author(s) 2025. Published by Baishideng Publishing Group Inc. All rights reserved.
World J Stem Cells. Sep 26, 2025; 17(9): 111341
Published online Sep 26, 2025. doi: 10.4252/wjsc.v17.i9.111341
Human umbilical cord mesenchymal stromal cell-derived extracellular vesicles alleviate radiation induced pulmonary fibrosis
Jing-Jing Wang, Hong-Jie Xu
Jing-Jing Wang, Department of Neurology, Weihai Central Hospital, Weihai 264400, Shandong Province, China
Hong-Jie Xu, The Fifth Affiliated Hospital, Guangzhou Medical University, Guangzhou 510535, Guangdong Province, China
Hong-Jie Xu, Guangzhou Kangyao Biotechnology Co., Ltd., Guangzhou 510632, Guangdong Province, China
Author contributions: Wang JJ and Xu HJ contributed to the manuscript writing; Xu HJ contributed to conceptualization and revision; Wang JJ contributed to language editing and financial support. All authors have read and approved the final manuscript.
Conflict-of-interest statement: All the authors report no relevant conflicts of interest for this article.
Open Access: This article is an open-access article that was selected by an in-house editor and fully peer-reviewed by external reviewers. It is distributed in accordance with the Creative Commons Attribution NonCommercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: https://creativecommons.org/Licenses/by-nc/4.0/
Corresponding author: Hong-Jie Xu, PhD, Associate Professor, The Fifth Affiliated Hospital, Guangzhou Medical University, No. 188 Kaiyuan Avenue, Huangpu District, Guangzhou 510535, Guangdong Province, China. xuhongjie316@163.com
Received: July 4, 2025
Revised: July 21, 2025
Accepted: September 3, 2025
Published online: September 26, 2025
Processing time: 82 Days and 20.7 Hours
Core Tip

Core Tip: This commentary examines the study by Wang et al on the role of human umbilical cord mesenchymal stromal cell-derived exosomes in alleviating radiation induced pulmonary fibrosis. However, some issues are worth discussing. First, regarding the definitions of mesenchymal stromal cells and exosomes, according to the latest standards, mesenchymal stromal cell should represent mesenchymal stromal cell, and the so-called exosomes should be extracellular vesicles. Secondly, there are some imprecise or incorrect parts in the text that need to be clarified, especially the evidence for the AKT signaling pathway may be insufficient. Thirdly, this article more systematically discusses the current progress of extracellular vesicles in the treatment of pulmonary fibrosis.