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  • Billing, Matilda, et al. (author)
  • A network including TGFβ/Smad4, Gata2 and p57 regulates proliferation of mouse hematopoietic progenitor cells.
  • 2016
  • In: Experimental Hematology. - : Elsevier BV. - 1873-2399 .- 0301-472X. ; 44:5, s. 399-409
  • Journal article (peer-reviewed)abstract
    • Transforming growth factor-β (TGFβ) is a potent inhibitor of hematopoietic stem and progenitor cell proliferation. However, the precise mechanism for this effect is unknown. Here, we have identified the transcription factor Gata2, previously described as an important regulator of hematopoietic stem cell (HSC) function, as an early and direct target gene for TGFβ-induced Smad signaling in hematopoietic progenitor cells. We also report that Gata2 is involved in mediating a significant part of the TGFβ response in primitive hematopoietic cells. Interestingly, the cell cycle regulator and TGFβ signaling effector molecule p57 was found to be upregulated as a secondary response to TGFβ. We observed Gata2 binding upstream of the p57 genomic locus, and importantly loss of Gata2 abolished TGFβ-stimulated induction of p57 as well as the resulting growth arrest of hematopoietic progenitors. Our results connect key molecules involved in HSC self-renewal and reveal a functionally relevant network regulating proliferation of primitive hematopoietic cells.
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Type of publication
journal article (1)
Type of content
peer-reviewed (1)
Author/Editor
Karlsson, Göran (1)
Enver, Tariq (1)
Karlsson, Stefan (1)
Brown, John (1)
Soneji, Shamit (1)
Billing, Matilda (1)
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Rörby, Emma (1)
May, Gillian (1)
Tipping, Alex J (1)
Salminen, Marjo (1)
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University
Lund University (1)
Language
English (1)
Research subject (UKÄ/SCB)
Medical and Health Sciences (1)
Year
2016 (1)

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