Quantitative imaging reveals real-time Pou5f3-nanog complexes driving dorsoventral mesendoderm patterning in zebrafish

Mireia Perez-Camps, Jing Tian, Serene C. Chng, Kai Pin Sem, Thankiah Sudhaharan, Cathleen Teh, Malte Wachsmuth, Vladimir Korzh, Sohail Ahmed, Bruno Reversade

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


Formation of the three embryonic germ layers is a fundamental developmental process that initiates differentiation. How the zebrafish pluripotency factor Pou5f3 (homologous to mammalian Oct4) drives lineage commitment is unclear. Here, we introduce fluorescence lifetime imaging microscopy and fluorescence correlation spectroscopy to assess the formation of Pou5f3 complexes with other transcription factors in real-time in gastrulating zebrafish embryos. We show, at single-cell resolution in vivo, that Pou5f3 complexes with Nanog to pattern mesendoderm differentiation at the blastula stage. Later, during gastrulation, Sox32 restricts Pou5f3-Nanog complexes to the ventrolateral mesendoderm by binding Pou5f3 or Nanog in prospective dorsal endoderm. In the ventrolateral endoderm, the Elabela / Aplnr pathway limits Sox32 levels, allowing the formation of Pou5f3-Nanog complexes and the activation of downstream BMP signaling. This quantitative model shows that a balance in the spatiotemporal distribution of Pou5f3-N nog complexes, modulated by Sox32, regulates mesendoderm specification along the dorsoventral axis.
Original languageEnglish (US)
Issue numberSeptember2016
StatePublished - Sep 29 2016
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-02-15

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)
  • Medicine(all)
  • Immunology and Microbiology(all)
  • Neuroscience(all)


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