Programme of self-reactive innate-like T cell-mediated cancer immunity.

Programme of self-reactive innate-like T cell-mediated cancer immunity.
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自身反应性先天样T细胞介导的癌症免疫方案。

DOI:
10.1038/s41586-022-04632-1
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发表时间:
2022-05
期刊:
影响因子:
64.8
通讯作者:
--
中科院分区:
综合性期刊1区
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--
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细胞转化诱导肿瘤浸润性T细胞的表型多样性群体,并且免疫检查点阻断疗法优先靶向识别癌细胞新抗原的T细胞。然而,其他类型的肿瘤浸润性T细胞如何有助于癌症免疫监视仍然难以捉摸。在对小鼠和人类恶性肿瘤中的T细胞的调查中,我们重新发现了具有高细胞毒性潜能的αβ T细胞受体(TCR)阳性的FCER 1G表达的先天性样T细胞群体,在此称为“杀伤先天性样T细胞”或ILTCk。广泛的反应未突变的自身抗原,ILTCKs从不同的胸腺祖细胞后,早期遇到同源抗原,并不断补充胸腺祖细胞在肿瘤进展。值得注意的是,肿瘤内ILTCk的扩增和效应分化依赖于癌细胞中的白细胞介素-15(IL-15)表达,并且过继转移的ILTCk祖细胞中IL-15信号传导的诱导性激活抑制肿瘤生长。因此,抗原受体自身反应性、独特的个体发生和独特的癌细胞传感机制将ILTCk与传统的细胞毒性T淋巴细胞区分为一类新的肿瘤引起的免疫应答。
Cellular transformation induces phenotypically diverse populations of tumor-infiltrating T cells, and immune checkpoint blockade therapies preferentially target T cells that recognize cancer cell neoantigens. Yet, how other classes of tumor-infiltrating T cells contribute to cancer immunosurveillance remains elusive. Here in a survey of T cells in murine and human malignancies, we rediscovered a population of αβ T cell receptor (TCR)-positive FCER1G-expressing innate-like T cells with high cytotoxic potential, hereon termed ‘killer innate-like T cells’, or ILTCks. Broadly reactive to unmutated self antigens, ILTCks arose from distinct thymic progenitors following early encounter with cognate antigens, and were continuously replenished by thymic progenitors during tumor progression. Notably, expansion and effector differentiation of intratumoral ILTCks depended on interleukin-15 (IL-15) expression in cancer cells, and inducible activation of IL-15 signaling in adoptively transferred ILTCk progenitors suppressed tumor growth. Thus, antigen receptor self-reactivity, unique ontogeny, and distinct cancer cell-sensing mechanism distinguish ILTCks from conventional cytotoxic T lymphocytes as a new class of tumor-elicited immune response.
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发表时间: 2012-02-08
期刊: NATURE
影响因子: 64.8
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发表时间: 2014-05-23
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影响因子: --
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