向免疫球蛋白IGSF9增强抗瘤T细胞活性和对抗PD-1免疫疗法的敏感性
Yifan Liu1, Hongying Wang1, Xinyu Zhao1
1Department of Biochemistry and Molecular Biology, Shandong Tumor Immunotherapy Research Innovation Team, Binzhou Medical University, Yantai, Shandong, P.R. China.
Cancer research
|July 28, 2023
概括
免疫球蛋白超级家族9号成员 (IGSF9) 通过抑制T细胞激活,促进瘤免疫逃避. 用抗体准IGSF9可以抑制瘤生长并提高免疫治疗的疗效.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 癌症免疫疗法癌症免疫疗法
背景情况:
- 免疫检查点是癌症免疫治疗的关键目标.
- 对当前免疫检查点抑制剂的耐药性需要发现新的标.
- 免疫球蛋白超级家族9号成员 (IGSF9) 被确定为一种潜在的新型免疫检查点.
研究的目的:
- 为了研究IGSF9在癌症免疫逃避中的作用.
- 评估IGSF9作为癌症免疫治疗的潜在治疗标.
主要方法:
- 在各种癌症类型中评估IGSF9表达.
- 在瘤细胞中利用IGSF9过度表达和淘汰模型.
- 在免疫缺陷,免疫能力,神经和人性化小鼠模型中进行实验.
- 通过T细胞结合试验和CD3+T细胞枯竭,研究了IGSF9作用的机制.
- 使用抗IGSF9抗体和抗编程细胞死亡蛋白1 (PD-1) 免疫疗法.
- 进行单细胞RNA测序以分析瘤微环境的变化.
主要成果:
- IGSF9在瘤细胞中过度表达,并在多种癌症中透免疫细胞.
- 瘤细胞IGSF9缺乏会减少瘤生长和T细胞抑制在免疫能力强的宿主中.
- IGSF9的细胞外域抑制T细胞的增殖和激活.
- 抗IGSF9抗体治疗抑制了瘤生长,并增强了抗PD-1疗法.
- 反IGSF9治疗重塑了瘤微环境,使其处于抑制瘤的状态.
结论:
- IGSF9充当免疫检查点,通过抑制T细胞反应,促进瘤免疫逃避.
- IGSF9是增强癌症免疫治疗和抑制瘤生长的有希望的治疗标.
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