SOX9 switch links regeneration to fibrosis at the single-cell level in mammalian kidneys
成果类型：
Article
署名作者：
Aggarwal, Shikhar; Wang, Zhanxiang; Rincon Fernandez Pacheco, David; Rinaldi, Anna; Rajewski, Alex; Callemeyn, Jasper; Van Loon, Elisabet; Lamarthee, Baptiste; Covarrubias, Ambart Ester; Hou, Jean; Yamashita, Michifumi; Akiyama, Haruhiko; Karumanchi, S. Ananth; Svendsen, Clive N.; Noble, Paul W.; Jordan, Stanley C.; Breunig, Joshua J.; Naesens, Maarten; Cippa, Pietro E.; Kumar, Sanjeev
署名单位：
Cedars Sinai Medical Center; Cedars Sinai Medical Center; Cedars Sinai Medical Center; KU Leuven; Cedars Sinai Medical Center; Cedars Sinai Medical Center; Gifu University; Cedars Sinai Medical Center; Universita della Svizzera Italiana; Universite Marie et Louis Pasteur; Institut National de la Sante et de la Recherche Medicale (Inserm)
刊物名称：
SCIENCE
ISSN/ISSBN：
0036-10420
DOI：
10.1126/science.add6371
发表日期：
2024-02-23
关键词：
renal repair
injury
mechanisms
regulator
reveals
wnt
activation
expression
PATHWAY
complex
摘要：
The steps governing healing with or without fibrosis within the same microenvironment are unclear. After acute kidney injury (AKI), injured proximal tubular epithelial cells activate SOX9 for self-restoration. Using a multimodal approach for a head-to-head comparison of injury-induced SOX9 lineages, we identified a dynamic SOX9 switch in repairing epithelia. Lineages that regenerated epithelia silenced SOX9 and healed without fibrosis (SOX9on-off). By contrast, lineages with unrestored apicobasal polarity maintained SOX9 activity in sustained efforts to regenerate, which were identified as a SOX9on-on Cadherin6pos cell state. These reprogrammed cells generated substantial single-cell WNT activity to provoke a fibroproliferative response in adjacent fibroblasts, driving AKI to chronic kidney disease. Transplanted human kidneys displayed similar SOX9/CDH6/WNT2B responses. Thus, we have uncovered a sensor of epithelial repair status, the activity of which determines regeneration with or without fibrosis.