How transcription factors drive choice of the T cell fate.

How transcription factors drive choice of the T cell fate.
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DOI:
10.1038/s41577-020-00426-6
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发表时间:
2021-03
期刊:
Nature reviews. Immunology
影响因子:
--
通讯作者:
Rothenberg EV
Rothenberg EV
中科院分区:
其他
文献类型:
--
作者:
Hosokawa H;Rothenberg EV

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最近的证据已经阐明了多能血液祖细胞如何在胸腺中转变其身份并经历定型成为T细胞。与环境信号一起,一组核心转录因子通过直接激活和抑制特定基因在这一过程中发挥重要作用。这些转录因子中的许多也再次发挥作用,但在以后的T细胞发育中控制不同的基因。在这里,我们回顾这些转录因子如何工作,以改变特定的基因组位点的活动,在早期胸腺内发展,以建立T细胞系的身份。我们介绍了主要的监管机构,并强调了新出现的见解,管理他们的行动的规则。基于全基因组深度测序的分析揭示了遗传表观遗传状态、转录因子-DNA结合亲和力阈值以及给定转录因子对相同细胞中其他因子活性的影响之间出乎意料的丰富关系。这些机制共同决定了T细胞的身份,并使谱系选择不可逆转。
Recent evidence has elucidated how multipotent blood progenitors transform their identities in the thymus and undergo commitment to become T cells. Together with environmental signalling, a core group of transcription factors have essential roles in this process by directly activating and repressing specific genes. Many of these transcription factors also function again, but controlling different genes, in later T cell development. Here, we review how these transcription factors work to change the activities of specific genomic loci during early intrathymic development to establish T lineage identity. We introduce the key regulators and highlight newly emergent insights into the rules that govern their actions. Whole-genome deep sequencing-based analysis has revealed unexpectedly rich relationships between inherited epigenetic states, transcription factor-DNA binding affinity thresholds, and influences of given transcription factors on the activities of other factors in the same cells. Together, these mechanisms determine T cell identity and make the lineage choice irreversible.
E2A蛋白促进淋巴酸化的多能祖细胞的发展。
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