Abstract
Abstract Currently, hematopoietic stem cell (HSC) transplantation is widely used in the therapy of hematological malignancies, non-malignant refractory anemia, genetic diseases and certain tumors with satisfactory therapeutic efficacy. HSC sources used for transplantation include bone marrow, mobilized peripheral blood and neonate umbilical cord blood. However, for many patients, sufficient number of human leukocyte antigen (HLA) -matched HSC cannot be found for transplantation, because the number of HSC in these tissues is small and HLA-identical donors are rare. Thus, in vitro generation of HSC has recently been focused. At present, the origin of HSC is hPSC, including hESC and hiPSC, which is worth to be the new origin of HSC transplantation. However, to generate functional hematopoietic stem cells which have efficient multi-lineage differentiation and in vivo engraftment potentials still is a big challenge to be confronted. In this review, the recent technical progress in HSC generation is summarizd, and the problems to be solved and new challenges to be confronted were discussed.
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