胚胎造血干细胞发育过程中的自噬作用

Autophagy Pub Date : 2024-09-01 Epub Date: 2024-05-22 DOI:10.1080/15548627.2024.2355072
Yumin Liu, Sifan Luo, Yuehang Chen, Zhuan Li
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引用次数: 0

摘要

造血干细胞(HSC)是从胚胎主动脉-性腺-肾上腺(AGM)区域的造血内皮细胞(HEC)中产生的,而胚胎主动脉-性腺-肾上腺(AGM)区域的造血内皮细胞经历了前造血干细胞过程。这一过程涉及多种内在和外在因素。我们最近发现,造血前体中存在不同的大自噬/自噬状态,这与造血前造血干细胞的造血潜能有关,而内皮细胞中 Atg5(自噬相关 5)基因的耗竭可能通过 NCL(核蛋白)途径阻碍了自噬过程,从而影响了内皮细胞向造血前造血干细胞的过渡。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Autophagy in hematopoietic stem cell development of the embryo.

Hematopoietic stem cells (HSC) emerge from hemogenic endothelial cells (HEC) in the aorta-gonad-mesonephros (AGM) region of embryos, which go through the pre-HSC process. Various intrinsic and extrinsic factors are involved in this process. We recently discovered that the existence of distinct macroautophagic/autophagic statuses in hematopoietic precursors is related to the hematopoietic potential of pre-HSCs and the depletion of the Atg5 (autophagy related 5) gene specifically in endothelial cells impaired in the transition of endothelial to pre-HSCs, by hampering the autophagic process, likely via the NCL (nucleolin) pathway.Abbreviation: Atg5: autophagy related 5; EGFP: enhanced green fluorescent protein; EHT: endothelial-to-hematopoietic transition; HEC: hemogenic endothelial cell; HSC: hematopoietic stem cell; NCL: nucleolin; RFP: red fluorescent protein.

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