Tbx3 Controls Dppa3 Levels and Exit from Pluripotency toward Mesoderm

Avinash Waghray, Néstor Saiz, Anitha D. Jayaprakash, Ana G. Freire, Dmitri Papatsenko, Carlos Filipe Pereira, Dung Fang Lee, Ran Brosh, Betty Chang, Henia Darr, Julian Gingold, Kevin Kelley, Christoph Schaniel, Anna Katerina Hadjantonakis, Ihor R. Lemischka

Research output: Contribution to journalArticlepeer-review

Abstract

Tbx3, a member of the T-box family, plays important roles in development, stem cells, nuclear reprogramming, and cancer. Loss of Tbx3 induces differentiation in mouse embryonic stem cells (mESCs). However, we show that mESCs exist in an alternate stable pluripotent state in the absence of Tbx3. In-depth transcriptome analysis of this mESC state reveals Dppa3 as a direct downstream target of Tbx3. Also, Tbx3 facilitates the cell fate transition from pluripotent cells to mesoderm progenitors by directly repressing Wnt pathway members required for differentiation. Wnt signaling regulates differentiation of mESCs into mesoderm progenitors and helps to maintain a naive pluripotent state. We show that Tbx3, a downstream target of Wnt signaling, fine tunes these divergent roles of Wnt signaling in mESCs. In conclusion, we identify a signaling-TF axis that controls the exit of mESCs from a self-renewing pluripotent state toward mesoderm differentiation.

Original languageEnglish
Pages (from-to)97-110
Number of pages14
JournalStem Cell Reports
Volume5
Issue number1
DOIs
Publication statusPublished - 2015 Jul 14
Externally publishedYes

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