Transcriptional regulation by the NSL complex enables diversification of IFT functions in ciliated versus non-ciliated cells [RNA-seq]
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ABSTRACT: Members of the NSL histone acetyltransferase complex are involved in multi-organ developmental syndromes. While the NSL complex is known for its importance in early development, its role in fully differentiated cells remains enigmatic. Using a kidney-specific model, we discovered that deletion of NSL complex members KANSL2 or KANSL3 in post-mitotic podocytes led to catastrophic kidney dysfunction. A systematic comparison of two primary differentiated cell types revealed that the NSL complex is a master regulator of intraciliary transport genes in both dividing and non-dividing cells. NSL complex ablation led to loss of cilia and impaired sonic hedgehog pathway in ciliated fibroblasts. By contrast, non-ciliated podocytes responded with altered microtubule dynamics and obliterated podocyte functions. Finally, overexpression of wild type but not a double zinc-finger (ZF-ZF)-domain mutant of KANSL2 rescued the transcriptional defects, revealing a critical function of this domain in NSL complex assembly and function. Thus, the NSL complex targets exhibit bifurcation of functions to enable diversity of specialized outcomes in differentiated cells.
ORGANISM(S): Mus musculus
PROVIDER: GSE225433 | GEO | 2023/07/31
REPOSITORIES: GEO
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