Published in

The Company of Biologists, Development, 2016

DOI: 10.1242/dev.139113

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Sall4 controls differentiation of pluripotent cells independently of the Nucleosome Remodelling and Deacetylation (NuRD) complex

This paper is made freely available by the publisher.
This paper is made freely available by the publisher.

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Abstract

Sall4 is an essential transcription factor for early mammalian development and is frequently overexpressed in cancer. Though it is reported to play an important role in embryonic stem cell self-renewal, whether it is an essential pluripotency factor has been disputed. Here we show that Sall4 is dispensable for ES cell pluripotency. Sall4 is an enhancer-binding protein that prevents precocious activation of the neural gene expression programme in ES cells but is not required for maintenance of the pluripotency gene regulatory network. While a proportion of Sall4 protein physically associates with the Nucleosome Remodelling and Deacetylase (NuRD) complex, Sall4 neither recruits NuRD to chromatin nor influences transcription via NuRD; rather free Sall4 protein regulates transcription independently of NuRD. We propose a model whereby enhancer binding by Sall4 and other pluripotency-associated transcription factors is responsible for maintaining the balance between transcriptional programmes in pluripotent cells.