ThPOK是髓状细胞谱系发展的关键多方面的调节者
Jayati Basu1,2, Andre Olsson3,4,5, Kyle Ferchen3,4
1Fox Chase Cancer Center, Philadelphia, PA, USA. BASUJ@ccf.org.
Nature immunology
|July 20, 2023
概括
转录因子ThPOK调节了髓状细胞系的结合和分化. 它控制单细胞-状细胞与颗粒细胞的产生,并起到抑制中性粒细胞成熟的作用.
科学领域:
- 免疫学 免疫学 免疫学
- 发育生物学 发展生物学
- 分子生物学分子生物学
背景情况:
- 转录因子ThPOK (Zbtb7b) 已被认可为其在胸腺内 CD4 T 细胞系承诺中的重要作用.
- 其在T细胞发育之外的功能,特别是髓状细胞分化,仍然在很大程度上未被探索.
研究的目的:
- 调查ThPOK在调节髓状细胞系承诺,分化和成熟方面的新和关键作用.
- 阐明ThPOK影响髓状细胞命运决定的分子机制.
主要方法:
- 利用记者和淘汰赛小鼠模型来研究ThPOK功能.
- 采用单细胞RNA测序来分析骨髓分化过程中的转录变化.
- 进行了祖先转移和殖民地测试,以评估血统承诺和分化潜力.
主要成果:
- 证明ThPOK是一种多方面调节神经髓层系承诺的调节器.
- 显示ThPOK控制了在恒常状态期间单细胞 - 树突细胞和粒细胞生产之间的平衡.
- 确定ThPOK通过转录和转录后调节抑制中性粒细胞成熟,包括改变的mRNA剪接和内质保留.
结论:
- ThPOK在髓状细胞发育中起着意想不到但至关重要的作用,超出了其在T细胞谱系承诺中的已知功能.
- 通过调节关键转录因子和改变mRNA拼接来控制分化和成熟,ThPOK会影响髓状细胞谱系的决定.
- 这些发现揭示了ThPOK作为骨髓细胞造血的复杂过程中的关键调节者.
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