Lineage fate and intense debate: myths, models and mechanisms of CD4- versus CD8-lineage choice.

Lineage fate and intense debate: myths, models and mechanisms of CD4- versus CD8-lineage choice.
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DOI:
10.1038/nri2416
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发表时间:
2008-10
期刊:
Nature reviews. Immunology
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在 αβ T 细胞受体 (TCR) 位点成功进行基因重排后,发育中的胸腺细胞表达 CD4 和 CD8 共同受体,并经历称为正选择的生死选择事件,以识别表达具有潜在有用的配体特异性的 TCR 的细胞。然后,积极选择的胸腺细胞必须决定是分化为 CD4+ 辅助 T 细胞还是 CD8+ 细胞毒性 T 细胞,这一关键决定称为 CD4/CD8 谱系选择。这篇综述总结了我们对谱系命运决定所涉及的细胞和分子事件的理解的最新进展,并在 CD4/CD8 谱系选择的主要模型的背景下讨论了它们。
Following successful gene rearrangement at αβ T-cell receptor (TCR) loci, developing thymocytes express both CD4 and CD8 co-receptors and undergo a life-or-death selection event known as positive selection to identify cells expressing TCRs with potentially useful ligand specificities. Positively selected thymocytes must then decide whether to differentiate into CD4+ helper T cells or CD8+ cytotoxic T cells, a crucial decision known as CD4/CD8 lineage choice. This Review summarizes recent advances in our understanding of the cellular and molecular events involved in lineage fate decision and discusses them in the context of the major models of CD4/CD8 lineage choice.
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