从组织炎症中解脱人体瘤免疫变化
Florian Mair1, Jami R Erickson1,2, Marie Frutoso1
1Fred Hutchinson Cancer Research Center, Vaccine and Infectious Disease Division, Seattle, WA, USA.
Nature
|May 11, 2022
概括
研究人员在头部和部癌症中发现了一种独特的调节性T细胞群. 这些ICOS+IL1R1+Treg细胞具有扩展性和高度抑制性,为瘤免疫学和免疫治疗目标提供了新的见解.
科学领域:
- 免疫学
- 癌症学
- 单细胞分析
背景情况:
- 免疫疗法在癌症治疗中表现有前途,但由于向健康组织中的途径而面临挑战.
- 由于炎症组织免疫细胞群的知识缺口,对瘤独特的免疫变异的理解受限.
研究的目的:
- 通过将头部和部状细胞癌中的免疫透物与匹配的炎症组织进行比较,以确定瘤丰富的免疫变化.
- 描述瘤微环境中的新型免疫细胞群和相互作用.
主要方法:
- 使用补充单细胞分析方法来检查免疫透物.
- 进行计算分析以确定瘤丰富的免疫细胞相互作用.
- 基于ICOS和IL-1受体1型 (IL1R1) 的同时表达的调节性T (Treg) 细胞.
主要成果:
- 发现瘤和炎症组织之间的免疫细胞组成和表型有显著的重叠.
- 在瘤中发现了大量ICOS+IL1R1+Treg细胞.
- 与IL1R1- Treg细胞相比,这些内IL1R1+ Treg细胞显示出最近的抗原反应,克隆扩张和优异的抑制功能.
结论:
- 在炎症组织和瘤之间存在广泛的免疫学一致性,以及瘤特异性变化.
- 发现了一种具有强烈抑制功能的内IL1R1+Treg细胞群.
- 这项研究为区分疾病特异性免疫变化与一般炎症相关模式提供了框架,有助于免疫治疗的发展.
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