Megakaryocyte ontogeny: Clinical and molecular significance.
Megakaryocyte ontogeny: Clinical and molecular significance.
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DOI:
10.1016/j.exphem.2018.02.003
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发表时间:
2018-05
影响因子:
2.6
通讯作者:
Goldfarb AN
中科院分区:
文献类型:
--
作者:
Elagib KE;Brock AT;Goldfarb AN
Fetal megakaryocytes (Mk) differ from adult Mk in key parameters that affect their capacity for platelet production. However, despite being smaller, more proliferative, and less polyploid, fetal Mk generally mature in the same manner as adult. The phenotypic features unique to fetal Mk predispose patients to several disease conditions: infantile thrombocytopenia, infantile megakaryoblastic leukemias, and poor platelet recovery after umbilical cord blood stem cell transplants. Ontogenic Mk differences also affect new strategies being developed to address global shortages of platelet transfusion units. These donor-independent, ex vivo production platforms are hampered by the limited proliferative capacity of adult-type Mk and the inferior platelet production by fetal-type Mk. Understanding the molecular programs that distinguish fetal versus adult megakaryopoiesis will help in improving approaches to these clinical problems. This review summarizes the phenotypic differences between fetal and adult Mk, the disease states associated with fetal megakaryopoiesis, and recent advances in the understanding of mechanisms that determine ontogenic Mk transitions.
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