Acta Anatomica Sinica ›› 2019, Vol. 50 ›› Issue (5): 698-702.doi: 10.16098/j.issn.0529-1356.2019.05.026

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Advances in the study of the murine hematopoiesis during the early stage of embryogenesis

LIU Dong-hua1 HE Xi2 PEI Yi-yan3 LIANG Yu-sen3 LI Ling-heng 2* LIU Hui-wen 1   

  1. 1.Department of Histology and Embryology, Harbin Medical University, Harbin 150081,China; 2.Stowers Institute for Medical Research,KC MO 64110 USA; 3.College of Basic Medicine, Harbin Medical University,Harbin 150081,China
  • Received:2018-07-24 Revised:2018-09-28 Online:2019-10-06 Published:2019-12-10
  • Contact: LI Ling-heng;LIU Hui-wen E-mail:liuhw_11@yahoo.com
  • Supported by:
    General project of natural science foundation in Heilongjiang province;Scientific project foundation of Heilongjiang province health and family planing commission;Natural science foundation of China for general project

Abstract:

The development of the murine embryonic hematopoietic system occurs in spatially and temporally distinct waves, which it is described as three waves so far-primitive hematopoiesis, bipotential erythroid-myeloid progenitors (EMPs) generation and long-lived transplantable hematopoietic stem cells (HSCs) maturation from their precursors and differentiation toward all the adult lineages. The latest point is that HSC-independent hematopoietic lineages are produced in the primitive wave and definitive progenitor wave in the early mammalian embryo, such as primitive erythrocytes or EMPs. The HSC-dependent phase of hematopoietic development produces all the adult lineages derived from HSCs. In this review, the recent studies on the development of hematopoietic cells and HSCs in the yolk sac and aorta-gonad-mesonephron region (AGM) region at cellular and molecular level will be summarized to provide an integrated model of developmental hematopoiesis, although multiple hematopoietic sites are involved in ebryonic hematopoiesis. It may offer new insights into the characteristics and its underlying mechanism of hematopoiesis at the early stage of embryogenesis.

Key words: Hematopoiesis, Hematopoietic stem cell, Yolk sac, Aorta-gonad-mesonephron region, Mouse embryo