在肝细胞癌中,MHC I 类损失与胆汁/原始细胞特征和"冷"瘤免疫微环境有关
Yasuyuki Shigematsu1,2, Gulanbar Amori1,2, Kazuhito Tanaka1,3
1Department of Pathology, Cancer Institute Hospital, Japanese Foundation for Cancer Research (JFCR), 3-8-31 Ariake, Koto-Ku, Tokyo, 135-8550, Japan.
Virchows Archiv : an international journal of pathology
|June 12, 2023
概括
在肝细胞癌 (HCC) 中的主要组织相容性复合体 (MHC) I 类损失与胆道/原始细胞特征有关. 这种损失与"寒冷"的瘤免疫微环境相关,影响免疫治疗反应.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
背景情况:
- 具有胆汁/原始细胞特征的肝细胞癌 (HCC) 往往表现出高编程死亡配体1 (PD-L1) 表达,但免疫治疗反应不佳.
- 瘤细胞上主要组织相容性复合体 (MHC) I 类的损失可能会损害抗瘤T细胞的反应.
- 在HCC中,MHC I类损失,胆道/原始细胞特征和瘤免疫微环境之间的关系尚不清楚.
研究的目的:
- 调查MHC I类损失与HCC.中的胆道/原生细胞特征之间的关联.
- 探索MHC I类损失对HCC瘤免疫微环境的影响.
- 了解HCC瘤与MHCI类损失的特征.
主要方法:
- 对连续397例HCC病例的分析.
- 评估MHC I类表达状态.
- 评估胆道/原始细胞特征 (CK19,ARG1,细胞形态).
- 免疫细胞透的量化 (CD8 +,CD4 +,CD20 +,FOXP3 +).
主要成果:
- 在8.1%的HC病例中发现了MHC I类损失.
- 缺乏脂质的细胞形态,CK19表达和ARG1表达的减少与MHC I类损失有显著的关联.
- PD-L1表达与MHC I类状态无关.
- 与MHC类I损失的HCs相比,与MHC类I完整的HCs相比,CD8+,CD4+,CD20+和FOXP3+细胞的透显著减少.
结论:
- 在HCC中MHC I类损失与胆道/原始细胞特征有关.
- 在HC中,MHC I类损失导致HCC中的"冷"瘤免疫微环境.
- 这些发现表明,MHC I类损失影响瘤细胞和瘤免疫微环境,可能影响免疫疗法的有效性.
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