在胸膜上皮瘤中CD80/CD86或主要组织相容性复合体II表达的免疫学意义
Hideki Ikeda1,2,3, Joji Nagasaki1,4, Daiki Shimizu5
1Chiba Cancer Center, Research Institute, Chiba, Japan.
JTO clinical and research reports
|October 6, 2023
概括
胸膜上皮瘤 (TET) 中CD80/CD86或MHC-II的高表达与T细胞透相关,并预测对免疫检查点抑制剂 (ICI) 的更好的反应. 这些发现表明CD80/CD86和MHC-II是TETsICI治疗的有希望的生物标志物.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 生物标志物发现发现
背景情况:
- 无法切除或复发的胸膜上皮瘤 (TETs) 是一个重大的临床挑战,治疗选择有限.
- 免疫检查点抑制剂 (ICI) 已经显示出有前途,但需要预测生物标志物来优化患者选择.
研究的目的:
- 研究CD80/CD86的免疫学意义和TETs的主要组织相容性复合体II类 (MHC-II) 表达.
- 评估这些分子作为免疫检查点抑制剂 (ICI) 疗效的潜在预测生物标志物.
主要方法:
- 在TET中通过免疫组织化学分析CD80,CD86,MHC I类 (MHC-I) 和MHC-II的表达.
- 产生表达CD80或MHC-II的小鼠瘤模型,以评估ICI效应和T细胞透.
- 在体内进行瘤再挑战实验以评估持久的抗瘤免疫力.
主要成果:
- 大约50%的TETs表现出高CD80/CD86表达,30%显示出高MHC-II表达,与增加的T细胞透相关.
- 在小鼠模型中,CD80和MHC-II表达都提高了ICI的疗效,导致持久的反应和完全的瘤排斥.
- 患有CD80高的胸腺癌的患者在接受抗编程细胞死亡蛋白1 (PD-1) 治疗时,表现出更长的无进展生存期.
结论:
- 在TET中高CD80/CD86或MHC-II表达与强大的T细胞透和改善ICI反应有关.
- CD80/CD86和MHC-II作为TETsICI治疗的潜在预测生物标志物,为向药物开发铺平了道路.
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