Biochemical Aspects of PD-L1 Regulation in Cancer Immunotherapy.

Biochemical Aspects of PD-L1 Regulation in Cancer Immunotherapy.
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DOI:
10.1016/j.tibs.2018.09.004
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发表时间:
2018-12
影响因子:
13.8
通讯作者:
Wei W
Wei W
中科院分区:
生物学1区
文献类型:
--
作者:
Zhang J;Dang F;Ren J;Wei W

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PD-L1 经常在人类癌症中表达,与免疫细胞上的 PD-1 结合,有助于癌症免疫逃避。因此,阻断 PD-1/PD-L1 相互作用的抗体会重新激活细胞毒性 T 细胞,从而根除癌细胞。然而,大多数癌症患者未能对 PD-1/PD-L1 阻断做出反应,其潜在机制尚不清楚。最近的研究表明,肿瘤细胞上的 PD-L1 表达水平可能会影响抗 PD-1/PD-L1 疗法的临床反应。因此,了解控制PD-L1表达的分子机制对于提高PD-1/PD-L1阻断的临床反应率和疗效非常重要。在这篇综述中,我们主要总结PD-L1的调控及其在调节抗肿瘤免疫反应中的潜在作用,旨在优化抗PD-1/PD-L1治疗,造福更广泛的癌症患者群体。
PD-L1, frequently expressed in human cancers, engages with PD-1 on immune cells and contributes to cancer immune evasion. As such, antibodies blocking the PD-1/PD-L1 interaction reactivate cytotoxic T cells to eradicate cancer cells. However, a majority of cancer patients fail to respond to PD-1/PD-L1 blockade with unclear underlying mechanism(s). Recent studies revealed that PD-L1 expression levels on tumor cells might affect the clinical response to anti-PD-1/PD-L1 therapies. Hence, understanding molecular mechanisms for controlling PD-L1 expression will be important to improve the clinical response rate and efficacy of PD-1/PD-L1 blockade. In this review, we primarily focus on summarizing PD-L1 regulation and its potential roles in regulating anti-tumor immune response, with purpose to optimize anti-PD-1/PD-L1 therapies, benefiting a wider cancer patient population.
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