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Stem Cell System. Stress response mechanism in hematopoietic stem cells. Takubo Keiyo 1 1Department of Stem Cell Biology, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan. pp.823-828
Published Date 2017/5/28
DOI https://doi.org/10.20837/4201706053
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 At steady state, hematopoietic stem cells(HSCs), the most undifferentiated cells in the hematological system, are kept quiescent in the cell cycle. Upon hematological stresses, including radiation, anti-cancer medication, infection, and transplantation, bone marrow HSCs enter the cell cycle and robustly repopulate the entire hematopoietic system via multi-lineage differentiation and self-renewal, partly due to the alteration of their surrounding microenvironment or niche. Such hematological repopulation activity is termed “stress hematopoiesis,” an activity essential for homeostatic maintenance of blood production. Understanding stress hematopoiesis is also critical to establish efficient methods enabling expansion in vitro of HSCs, since forced activation of the cell cycle by cytokine supplementation induces a stress-like cellular state.



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電子版ISSN 印刷版ISSN 0917-5857 医薬ジャーナル社

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