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  • Title: HOXC4 up-regulates NF-κB signaling and promotes the cell proliferation to drive development of human hematopoiesis, especially CD43+ cells.
    Author: Zeng J, Sun W, Chang J, Yi D, Zhu L, Zhang Y, Pan X, Zhou Y, Lai M, Bian G, Zhou Q, Liu J, Chen B, Ma F.
    Journal: Blood Sci; 2020 Oct; 2(4):117-128. PubMed ID: 35400027.
    Abstract:
    The hematopoietic function of HOXC4 has not been extensively investigated. Our research indicated that induction of HOXC4 in co-culture system from D10 significantly promoted productions of most hematopoietic progenitor cells. CD34-CD43+ cells could be clearly classified into CD34-CD43low and CD34-CD43high sub-populations at D14. The former cells had greater myelogenic potential, and their production was not significantly influenced by induction of HOXC4. By contrast, the latter cells had greater potential to differentiate into megakaryocytes and erythroid cells, and thus had properties of erythroid-megakaryocyte common progenitors, which abundance was increased by ∼2-fold when HOXC4 was induced from D10. For CD34-CD43low, CD34+CD43+, and CD34-CD43high sub-populations, CD43 level served as a natural index for the tendency to undergo hematopoiesis. Induction of HOXC4 from D10 caused more CD43+ cells sustain in S-phase with up-regulation of NF-κB signaling, which could be counteracted by inhibition of NF-κB signaling. These observations suggested that promotion of hematopoiesis by HOXC4 is closely related to NF-κB signaling and a change in cell-cycle status, which containing potential of clinical applications.
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