Cell type- And stage-specific expression of Otx2 is regulated by multiple transcription factors and cis-regulatory modules in the retina

Candace S.Y. Chan, Nicolas Lonfat, Rong Zhao, Alexander E. Davis, Liang Li, Man Ru Wu, Cheng Hui Lin, Zhe Ji, Constance L. Cepko*, Sui Wang

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

Transcription factors (TFs) are often used repeatedly during development and homeostasis to control distinct processes in the same and/or different cellular contexts. Considering the limited number of TFs in the genome and the tremendous number of events that need to be regulated, re-use of TFs is necessary. We analyzed how the expression of the homeobox TF, orthodenticle homeobox 2 (Otx2), is regulated in a cell type- and stage-specific manner during development in the mouse retina. We identified seven Otx2 cis-regulatory modules (CRMs), among which the O5, O7 and O9 CRMs mark three distinct cellular contexts of Otx2 expression. We discovered that Otx2, Crx and Sox2, which are well-known TFs regulating retinal development, bind to and activate the O5, O7 or O9 CRMs, respectively. The chromatin status of these three CRMs was found to be distinct in vivo in different retinal cell types and at different stages. We conclude that retinal cells use a cohort of TFs with different expression patterns and multiple CRMs with different chromatin configurations to regulate the expression of Otx2 precisely.

Original languageEnglish (US)
Article numberdev187922
JournalDevelopment (Cambridge)
Volume147
Issue number14
DOIs
StatePublished - Jul 26 2020

Keywords

  • Cis-regulatory module
  • Crx
  • Otx2
  • Sox2
  • Transcription factor

ASJC Scopus subject areas

  • Molecular Biology
  • Developmental Biology

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    Chan, C. S. Y., Lonfat, N., Zhao, R., Davis, A. E., Li, L., Wu, M. R., Lin, C. H., Ji, Z., Cepko, C. L., & Wang, S. (2020). Cell type- And stage-specific expression of Otx2 is regulated by multiple transcription factors and cis-regulatory modules in the retina. Development (Cambridge), 147(14), [dev187922]. https://doi.org/10.1242/dev.187922