抗体介导的HLA/LILR相互作用的抑制打破了先天免疫耐受性,并诱导了抗瘤免疫力
Abir K Panda1, Kannan Natarajan2, Surajit Sinha3
1Cellular Immunology Section, Laboratory of Immune System Biology, NIAID, NIH, Bethesda, Maryland.
Cancer immunology research
|October 1, 2025
概括
用泛抗HLA抗体准白细胞免疫球蛋白类受体 (LILRs) 激活了对癌症的天生的免疫力. 这种方法增强了自然杀手 (NK) 细胞的功能,并在临床前模型中显示出强大的抗瘤作用.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 具有天生的免疫力.
背景情况:
- 免疫检查点封锁主要针对T淋巴细胞进行癌症治疗.
- 对抗癌症免疫力的自然杀手 (NK) 细胞的治疗性操纵仍未得到充分研究.
- NK和髓质细胞上的白细胞免疫球蛋白样受体 (LILR) 与HLA分子相互作用,调节免疫反应.
研究的目的:
- 通过使用泛抗HLA单克隆抗体 (mAbs) 调查阻断HLA/LILR相互作用的功能效应.
- 探索针对先天免疫的潜力,以改善癌症治疗.
主要方法:
- 使用泛抗HLAmAbs识别HLA分子上的保存表位.
- 评估了LILR结合的阻断及其对NK和髓状细胞功能的影响.
- 在瘤免疫的人性化小鼠模型中评估治疗疗效.
主要成果:
- 全抗HLA mAbs有效地阻止了大多数LILR相互作用,而不会影响其他免疫受体.
- 从人类癌症中激活了功能失调的NK细胞.
- 在临床前模型中证明增强瘤免疫力和直接抗瘤作用.
结论:
- 通过泛抗HLA mAbs破坏HLA/LILR相互作用是激活天生的免疫力的有希望的策略.
- 这种方法有可能控制初级瘤和转移.
- 准天生的免疫力为癌症免疫疗法提供了一个新的途径.
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