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Copyright: ©Author(s) 2026. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial (CC BY-NC 4.0) license. No commercial re-use. See permissions. Published by Baishideng Publishing Group Inc.
World J Stem Cells. Apr 26, 2026; 18(4): 118621
Published online Apr 26, 2026. doi: 10.4252/wjsc.v18.i4.118621
Multilayered control of retinal stem/progenitor cell fate in the single-cell and organoid era: Developmental blueprints and regenerative opportunities
Qi-Qi Xie, Mei-Qi Zeng, Li-Ni Mao, Shi-Jun Han, Da Sun, Zhi-Gang Zheng
Qi-Qi Xie, Shi-Jun Han, School of Optometry and Ophthalmology and Eye Hospital, Wenzhou Medical University, Wenzhou 325027, Zhejiang Province, China
Mei-Qi Zeng, Li-Ni Mao, Zhi-Gang Zheng, Department of Ophthalmology, The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People’s Hospital, Quzhou 324000, Zhejiang Province, China
Da Sun, Institute of Life Sciences and Biomedical Collaborative Innovation Center of Zhejiang Province, Wenzhou University, Wenzhou 325000, Zhejiang Province, China
Co-first authors: Qi-Qi Xie and Mei-Qi Zeng.
Author contributions: Xie QQ and Zeng MQ contributed equally to this work as co-first authors. Xie QQ and Zeng MQ contributed to conceptualization; Xie QQ contributed to literature review, data interpretation, and writing - original draft preparation; Zeng MQ contributed to funding acquisition, methodology design, data curation, and writing - review and editing; Mao LN contributed to investigation, figure/table preparation, and manuscript revision; Han SJ contributed to formal analysis, data visualization, and validation; Sun D contributed to literature screening, resources, and reference management; Zheng ZG conceived and supervised the study, provided critical review and editing, and approved the final version of the manuscript. All authors read and approved the final manuscript.
Supported by Quzhou Municipal Science and Technology Plan Project, No. ZD2022218 and No. ZD2022231.
Conflict-of-interest statement: All the authors report no relevant conflicts of interest for this article.
Corresponding author: Zhi-Gang Zheng, MD, Chief, Professor, Department of Ophthalmology, The Quzhou Affiliated Hospital of Wenzhou Medical University, Quzhou People’s Hospital, No. 100 Minjiang Avenue, Quzhou 324000, Zhejiang Province, China. zhengzhigang0710@wmu.edu.cn
Received: January 7, 2026
Revised: February 22, 2026
Accepted: March 20, 2026
Published online: April 26, 2026
Processing time: 103 Days and 18 Hours
Core Tip

Core Tip: Retinal degeneration is a structural failure that cannot be reversed by pathway modulation alone. Leveraging single-cell and spatial multi-omics from human retina and organoids, this review defines a multilayer fate-control paradigm - transcriptional instruction, epigenetic permission, and metabolic/inflammatory execution - that governs competence windows and photoreceptor vs inner-retinal outcomes. We compare major regenerative cell sources (retinal progenitors, Müller glia, ciliary marginal zone-like candidates, and human pluripotent stem cell-derived retinal pigment epithelium/ photoreceptors) and translate atlas insights into actionable engineering strategies, including organoid benchmarking, staged reprogramming, and rational gene + cell combinations to enhance maturation and circuit integration.