期刊
CELL STEM CELL
卷 28, 期 3, 页码 535-+出版社
CELL PRESS
DOI: 10.1016/j.stem.2020.11.006
关键词
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资金
- National Key Research and Development Program of China [2016YFA0102300, 2017YFA0103100, 2017YFA0103102, 2017YFA0103401, 2016YFA0100601, 2019YFA0110201]
- CAMS Innovation Fund for Medical Sciences [2016-I2M-1-018, 2016-I2M-3-002, 2017-I2M-1-015]
- National Natural Science Foundation of China [81530008, 31671541, 81870099, 81870089, 31425012, 81890990, 81890991, 31930054, 81800102, 31871173]
- Beijing-Tianjin-Hebei Basic Research Project [19JCZDJC65700]
- Peking Union Medical College Subject Construction Project [201920101401]
- Program for Guangdong Introducing Innovative and Entrepreneurial Teams [2017ZT07S347]
- Beijing Municipal Science AMP
- Technology Commission [Z171100000417009]
- State Key Laboratory of Proteomics [SKLPK201502]
- Key Research and Development Program of Guangdong Province [2019B020234002]
- Non-profit Central Research Institute Fund of the Chinese Academy of Medical Sciences [2019PT310022]
Through single-cell RNA sequencing, it was found that early human megakaryopoiesis in embryonic and fetal stages exhibits cellular heterogeneity, with different MK subpopulations expressing distinct gene patterns that may reflect early functional specialization. Additionally, a subpopulation of MKs expressing genes associated with immune responses was identified in vivo, and these cells could also be derived from human embryonic stem cells.
Despite our growing understanding of embryonic immune development, rare early megakaryocytes (MKs) remain relatively understudied. Here we used single-cell RNA sequencing of human MKs from embryonic yolk sac (YS) and fetal liver (FL) to characterize the transcriptome, cellular heterogeneity, and developmental trajectories of early megakaryopoiesis. In the YS and FL, we found heterogeneous MK subpopulations with distinct developmental routes and patterns of gene expression that could reflect early functional specialization. Intriguingly, we identified a subpopulation of CD42b(+)CD14(+) MKs in vivo that exhibit high expression of genes associated with immune responses and can also be derived from human embryonic stem cells (hESCs) in vitro. Furthermore, we identified THBS1 as an early marker for MK-biased embryonic endothelial cells. Overall, we provide important insights and invaluable resources for dissection of the molecular and cellular programs underlying early human megakaryopoiesis.
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