A sall1-NuRD interaction regulates multipotent nephron progenitors and is required for loop of henle formation

Jeannine M. Basta, Lynn Robbins, Darcy R. Denner, Grant R. Kolar, Michael Rauchman

Research output: Contribution to journalArticle

11 Scopus citations

Abstract

The formation of the proper number of nephrons requires a tightly regulated balance between renal progenitor cell self-renewal and differentiation. The molecular pathways that regulate the transition from renal progenitor to renal vesicle are not well understood. Here, we show that Sall1interacts with the nucleosome remodeling and deacetylase complex (NuRD) to inhibit premature differentiation of nephron progenitor cells. Disruption of Sall1-NuRD in vivo in knock-in mice (ΔSRM) resulted in accelerated differentiation of nephron progenitors and bilateral renal hypoplasia. Transcriptional profiling of mutant kidneys revealed a striking pattern in which genes of the glomerular and proximal tubule lineages were either unchanged or upregulated, and those in the loop of Henle and distal tubule lineages were downregulated. These global changes in gene expression were accompanied by a significant decrease in THP-, NKCC2- and AQP1-positive loop of Henle nephron segments in mutant ΔSRM kidneys. These findings highlight an important function of Sall1-NuRD interaction in the regulation of Six2-positive multipotent renal progenitor cells and formation of the loop of Henle.

Original languageEnglish
Pages (from-to)3080-3094
Number of pages15
JournalDevelopment (Cambridge)
Volume144
Issue number17
DOIs
StatePublished - Sep 1 2017

Keywords

  • Lgr5
  • Loop of henle
  • Nephron progenitor
  • NuRD
  • Sall1

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