Transcriptional drivers of the T-cell lineage program.

Transcriptional drivers of the T-cell lineage program.
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DOI:
10.1016/j.coi.2011.12.012
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发表时间:
2012-04
影响因子:
7
通讯作者:
Rothenberg EV
Rothenberg EV
中科院分区:
医学2区
文献类型:
--
作者:
Rothenberg EV

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T细胞发育程序由Notch-Delta信号传导特异性触发,但建立T细胞谱系身份所需的大多数转录因子在其他造血谱系中也具有交叉作用。这种因子共享使T细胞特化所需的核心基因调控回路的完整定义复杂化。但新的进展阐明了三种最具T细胞特异性的转录因子的作用。现在显示T细胞谱系的定型依赖于Bcl 11 b,而T细胞分化程序的启动更早地开始于TCF-1(Tcf 7基因产物)和加塔-3的诱导。现在有几份报告揭示了TCF-1和加塔-3是如何在早期T细胞中动员的,以及它们的T细胞系特异性作用的途径。
The T-cell development program is specifically triggered by Notch-Delta signaling, but most transcription factors needed to establish T-cell lineage identity also have crossover roles in other hematopoietic lineages. This factor sharing complicates full definition of the core gene regulatory circuits required for T-cell specification. But new advances illuminate the roles of three of the most T-cell specific transcription factors. Commitment to the T-cell lineage is now shown to depend on Bcl11b, while initiation of the T-cell differentiation program begins earlier with the induction of TCF-1 (Tcf7 gene product) and GATA-3. Several reports now reveal how TCF-1 and GATA-3 are mobilized in early T cells and the pathways for their T-lineage specific effects.
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