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Chromatin-remodeling complexes play critical roles in establishing gene expression patterns in response to developmental signals. How these epigenetic regulators determine the fate of progenitor cells during development of specific organs is not well understood. We found that genetic deletion of Brg1 (Smarca4), the core enzymatic protein in SWI/SNF, in nephron progenitor cells leads to severe renal hypoplasia. Nephron progenitor cells were depleted in Six2-Cre, Brg1flx/flx mice due to reduced cell proliferation. This defect in self-renewal, together with impaired differentiation resulted in a profound nephron deficit in Brg1 mutant kidneys. Sall1, a transcription factor that is required for expansion and maintenance of nephron progenitors, associates with SWI/SNF. Brg1 and Sall1 bind promoters of many progenitor cell genes and regulate expression of key targets that promote their proliferation. Published by Elsevier Inc.


Jeannine M Basta, Ajeet P Singh, Lynn Robbins, Lisa Stout, Michelle Pherson, Michael Rauchman. The core SWI/SNF catalytic subunit Brg1 regulates nephron progenitor cell proliferation and differentiation. Developmental biology. 2020 Aug 15;464(2):176-187

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PMID: 32504627

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