Ubiquitin Specific Protease 1 Expression and Function in T Cell Immunity.

Ubiquitin Specific Protease 1 Expression and Function in T Cell Immunity.
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泛素特异性蛋白水解酶1在T细胞免疫中的表达和作用

DOI:
10.4049/jimmunol.2100303
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发表时间:
2021-09-01
期刊:
Journal of immunology (Baltimore, Md. : 1950)
影响因子:
--
通讯作者:
Goldrath AW
Goldrath AW
中科院分区:
其他
文献类型:
--
作者:
Omilusik KD;Nadjsombati MS;Yoshida TM;Shaw LA;Goulding J;Goldrath AW

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T 细胞是针对传染病的免疫反应的重要介质,并提供长期保护,防止再次感染。幼稚 T 细胞向效应 T 细胞的分化以及随后记忆 T 细胞群响应感染的分化和持续存在是一个高度调控的过程。 E 蛋白转录因子及其抑制剂 Id 蛋白是 CD4+ 和 CD8+ T 细胞反应的重要调节因子;然而,它们在蛋白质水平上的调节尚未被探索。最近,去泛素酶 USP1 被证明可以稳定 Id2 并调节骨肉瘤中的细胞分化。在这里,我们研究了 Usp1 在小鼠 T 细胞中 Id2 和 Id3 翻译后控制中的作用。我们发现,在体外激活或体内感染后,T 细胞中 Usp1 上调,并且 Usp1 表达的程度与 T 细胞扩增的程度相关。 T 细胞激活后,Usp1 直接与 Id2 和 Id3 相互作用。然而,Usp1 缺陷不会影响效应 T 细胞中的 Id 蛋白丰度,也不会改变初次感染后效应 T 细胞的扩增或分化。 Usp1缺陷导致记忆CD8+T细胞随着时间的推移逐渐丧失,并降低Id2蛋白水平和再感染后效应CD8+T细胞的增殖。总之,这些结果表明 Usp1 在蛋白质水平上调节回忆反应中发挥着重要作用,并强调了初次感染和后续感染之间 T 细胞反应调节的差异。最后,我们的观察揭示了免疫细胞类型与非免疫细胞类型之间 Id2/3 蛋白的差异调节。
T cells are essential mediators of immune responses against infectious diseases and provide long-lived protection from reinfection. The differentiation of naive to effector T cells and subsequent differentiation and persistence of memory T cell populations in response to infection is a highly regulated process. E protein transcription factors and their inhibitors, Id proteins, are important regulators of both CD4+ and CD8+ T cell responses; however, their regulation at the protein level has not been explored. Recently, the deubiquitinase USP1 was shown to stabilize Id2 and modulate cellular differentiation in osteosarcomas. Here, we investigated a role for Usp1 in posttranslational control of Id2 and Id3 in murine T cells. We show that Usp1 was upregulated in T cells following activation in vitro or following infection in vivo, and the extent of Usp1 expression correlated with the degree of T cell expansion. Usp1 directly interacted with Id2 and Id3 following T cell activation. However, Usp1-deficiency did not impact Id protein abundance in effector T cells or alter effector T cell expansion or differentiation following a primary infection. Usp1 deficiency resulted in a gradual loss of memory CD8+ T cells over time and reduced Id2 protein levels and proliferation of effector CD8+ T cell following reinfection. Together, these results identify Usp1 as a player in modulating recall responses at the protein level and highlight differences in regulation of T cell responses between primary and subsequent infection encounters. Finally, our observations reveal that differential regulation of Id2/3 proteins between immune vs non-immune cell types.
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影响因子: --
作者:
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