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LAMP3+树突细胞和T细胞亚群之间的相互作用促进皮肤状甲状腺癌中的免疫逃避

Zhiyuan Wang¹, Xiaoyu Ji¹, Ye Zhang²

¹Department of Thyroid Surgery, The First Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China.

Journal for immunotherapy of cancer

|May 30, 2024

概括

渐进的乳头甲状腺癌 (PTC) 显示免疫细胞减少和增强的免疫逃避. lysosomal关联膜蛋白3 (LAMP3) 树突细胞 (DCs) 促进T细胞耗尽和免疫抑制,为PTC提供新的免疫治疗点.

科学领域:

在瘤学瘤学.
免疫学免疫学免疫学
基因组学就是基因组学.

背景情况:

在全球范围内,乳头甲状腺癌 (PTC) 发病率正在上升,10-15%的患者预后不佳.
目前用于PTC的免疫疗法显示出有限的疗效,强调需要了解免疫重塑和确定新的治疗点.

研究的目的:

为了研究进步PTC的免疫微环境.
为了确定关键的细胞参与者和分子相互作用驱动免疫逃避在PTC.
探索渐进性PTC的新型治疗策略.

主要方法:

在14名PTC患者的18个手术组织样本上进行单细胞RNA测序 (scRNA-seq).
使用空间转录组学,免疫组织化学,多重免疫组织化学和大量RNA-seq.进行验证.
分析了151,238个单个细胞,以描述免疫细胞群和瘤透特征.

主要成果:

渐进性PTC表现为免疫细胞减少,瘤细胞免疫逃避增加,抗原呈现受损.
鉴定出了 lysosomal关联膜蛋白3 (LAMP3) 树突细胞 (DC) 的亚群,在渐进的PTC中增加,并与晚期和不良预后相关.
LAMP3+ DCs促进CD8+ T细胞的耗尽 (通过NECTIN2-TIGIT) 和调节性T细胞的透 (通过CCL17-CCR4),形成一个免疫抑制的微环境.
瘤细胞通过NECTIN3-NECTIN2相互作用保留LAMP3+DC,从而促进免疫逃避.

结论:

在渐进的PTC中,LAMP3+直流细胞和T细胞亚群之间的相互作用至关重要.
研究结果提供了关于PTC免疫逃避机制的见解.
这项研究提供了新的策略,以改善进步PTC患者的免疫治疗.

关键词:

树突性树突性树突性逃跑 / 逃避逃跑 / 逃避头部和部癌症头部和部癌症免疫抑制是一种免疫抑制.一个T细胞细胞.

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