ERG promotes the maintenance of hematopoietic stem cells by restricting their differentiation.
Författare
Summary, in English
The balance between self-renewal and differentiation is crucial for the maintenance of hematopoietic stem cells (HSCs). Whereas numerous gene regulatory factors have been shown to control HSC self-renewal or drive their differentiation, we have relatively few insights into transcription factors that serve to restrict HSC differentiation. In the present work, we identify ETS (E-twenty-six)-related gene (ERG) as a critical factor protecting HSCs from differentiation. Specifically, loss of Erg accelerates HSC differentiation by >20-fold, thus leading to rapid depletion of immunophenotypic and functional HSCs. Molecularly, we could demonstrate that ERG, in addition to promoting the expression of HSC self-renewal genes, also represses a group of MYC targets, thereby explaining why Erg loss closely mimics Myc overexpression. Consistently, the BET domain inhibitor CPI-203, known to repress Myc expression, confers a partial phenotypic rescue. In summary, ERG plays a critical role in coordinating the balance between self-renewal and differentiation of HSCs.
Publiceringsår
2015
Språk
Engelska
Sidor
1915-1929
Publikation/Tidskrift/Serie
Genes & Development
Volym
29
Issue
18
Fulltext
Länkar
Dokumenttyp
Artikel i tidskrift
Förlag
Cold Spring Harbor Laboratory Press (CSHL)
Ämne
- Cell and Molecular Biology
Status
Published
ISBN/ISSN/Övrigt
- ISSN: 1549-5477