Megakaryocytes regulate the quiescence of hematopoietic stem cells through PF4: 2013 ASH meeting highlights
- PMID: 27357007
- PMCID: PMC4923518
- DOI: 10.3978/j.issn.2306-9759.2014.03.05
Megakaryocytes regulate the quiescence of hematopoietic stem cells through PF4: 2013 ASH meeting highlights
Abstract
Hematopoietic stem cells (HSCs) can take one of the three different pathways: quiescence, self-renewal and differentiation. Mechanisms that control the tight balance to maintain lifelong hematopoietic homeostasis have been a major interest of research. Platelet factor-4 (PF4), a weak chemokine, is synthesized exclusively by megakaryocytes and sequestered in platelets. This meeting report highlights a novel study presented at 2013 ASH annual meeting. This study found that megakaryocyte, a progeny of HSC, was involved in maintaining quiescence of HSCs via PF4 in a feedback loop.
Keywords: Hematopoietic stem cell (HSC); megakaryocytes; platelet factor-4 (PF4).
Conflict of interest statement
Comment on
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CD133: a stem cell biomarker and beyond.Exp Hematol Oncol. 2013 Jul 1;2(1):17. doi: 10.1186/2162-3619-2-17. Exp Hematol Oncol. 2013. PMID: 23815814 Free PMC article.
References
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- Dudek AZ, Nesmelova I, Mayo K, et al. Platelet factor 4 promotes adhesion of hematopoietic progenitor cells and binds IL-8: novel mechanisms for modulation of hematopoiesis. Blood 2003;101:4687-94. - PubMed
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