T cell lineage commitment: identity and renunciation.

T cell lineage commitment: identity and renunciation.
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DOI:
10.4049/jimmunol.1003703
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发表时间:
2011-06-15
期刊:
Journal of immunology (Baltimore, Md. : 1950)
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:
Rothenberg EV

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进行T细胞发育的前体在进入胸腺之前开始并在之后的许多细胞周期中继续的顺序过程中摆脱了它们对其他途径的访问。这一过程涉及三个水平的调控变化,其中细胞的内在转录调控因子、Notch1等信号受体的表达和不同归巢受体的表达分别有助于确认T细胞身份。每一种替代潜能都有不同的潜在分子基础,这些分子基础被中和,然后在早期T细胞前体中通过不同的机制永久沉默。这种调控镶嵌对于T淋巴细胞与其他造血命运之间的关系层次有着显著的影响。
Precursors undertaking T-cell development shed their access to other pathways in a sequential process that begins before entry into the thymus and continues through many cell cycles afterwards. This process involves three levels of regulatory change, in which the cells’ intrinsic transcriptional regulatory factors, expression of signaling receptors like Notch1, and expression of distinct homing receptors separately contribute to confirmation of T-cell identity. Each alternative potential has a different underlying molecular basis which is neutralized, then permanently silenced through different mechanisms in early T-cell precursors. This regulatory mosaic has notable implications for the hierarchy of relationships linking T lymphocytes to other hematopoietic fates.
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