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Overexpression of GATA2 Enhances Development and Maintenance of Human Embryonic Stem Cell-Derived Hematopoietic Stem Cell-like Progenitors.

ABSTRACT: GATA2 is essential for the endothelial-to-hematopoietic transition (EHT) and generation of hematopoietic stem cells (HSCs). It is poorly understood how GATA2 controls the development of human pluripotent stem cell (hPSC)-derived HS-like cells. Here, using human embryonic stem cells (hESCs) in which GATA2 overexpression was induced by doxycycline (Dox), we elucidated the dual functions of GATA2 in definitive hematopoiesis before and after the emergence of CD34+CD45+CD90+CD38- HS-like cells. Specifically, GATA2 promoted expansion of hemogenic precursors via the EHT and then helped to maintain HS-like cells in a quiescent state by regulating cell cycle. RNA sequencing showed that hPSC-derived HS-like cells were very similar to human fetal liver-derived HSCs. Our findings will help to elucidate the mechanism that controls the early stages of human definitive hematopoiesis and may help to develop a strategy to generate hPSC-derived HSCs.

SUBMITTER: Zhou Y 

PROVIDER: S-EPMC6626852 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature

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Overexpression of GATA2 Enhances Development and Maintenance of Human Embryonic Stem Cell-Derived Hematopoietic Stem Cell-like Progenitors.

Zhou Ya Y   Zhang Yonggang Y   Chen Bo B   Dong Yong Y   Zhang Yimeng Y   Mao Bin B   Pan Xu X   Lai Mowen M   Chen Yijin Y   Bian Guohui G   Zhou Qiongxiu Q   Nakahata Tatsutoshi T   Zhou Jiaxi J   Wu Min M   Ma Feng F  

Stem cell reports 20190606 1

GATA2 is essential for the endothelial-to-hematopoietic transition (EHT) and generation of hematopoietic stem cells (HSCs). It is poorly understood how GATA2 controls the development of human pluripotent stem cell (hPSC)-derived HS-like cells. Here, using human embryonic stem cells (hESCs) in which GATA2 overexpression was induced by doxycycline (Dox), we elucidated the dual functions of GATA2 in definitive hematopoiesis before and after the emergence of CD34<sup>+</sup>CD45<sup>+</sup>CD90<sup>  ...[more]

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