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Control of T cell tolerance by phosphatase and tensin homolog

机译:通过磷酸酶和张素同源物控制T细胞耐受性

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The in vivo maintenance of immune tolerance is critically dependent on regulatory T (T_(reg)) cells, a lineage of CD4~+ T cells expressing the transcription factor Foxp3 that exerts immunoregulatory function. Because of the potential benefit of using Treg cells for cellular immunotherapy in clinical settings, including autoimmune disease and transplantation,much attention has been directed at understanding the signals that govern Treg cell development, function, and homeostasis. Studies with genetically modified mouse models have shown that the lipid phosphatase PTEN (phosphatase and tensin homolog), the predominant negative regulator of the PI3K/Akt pathway in T cells, hasmultiple functions in sustaining T cell–mediated immune tolerance in vivo. In addition to its role in maintaining T cell homeostasis, the PI3K/Akt pathway also has an essential role in T cell development and lineage commitment, contributing to the cell fate decision between conventional and regulatory T cells
机译:体内维持免疫耐受性均可致依赖于调节性T(T_(reg))细胞,CD4〜+ T细胞的谱系表达施加免疫调节功能的转录因子Foxp3。由于使用Treg细胞在临床环境中使用Treg细胞进行细胞免疫疗法的潜在益处,包括自身免疫性疾病和移植,因此在理解Treg细胞发育,功能和稳态的信号方面旨在很多。具有基因改性小鼠模型的研究表明,脂质磷酸酶PTEN(磷酸酶和Tensin Homolog),T细胞中PI3K / AKT途径的主要负调节剂,具有多种功能在维持体内的T细胞介导的免疫耐受性。除了在维持T细胞稳态方面的作用外,PI3K / AKT途径还具有在T细胞开发和血统承诺中具有重要作用,有助于常规和调节T细胞之间的细胞命运决策

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