恶性细胞中的H3K9乳化促进了CD8+ T细胞功能障碍和免疫治疗反应差
Ruijie Wang1, Chuwen Li1, Zhongyi Cheng2
1Department of Oral Maxillofacial-Head and Neck Oncology, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai 200011, China; National Center for Stomatology & National Clinical Research Center for Oral Diseases, Shanghai 200011, China; Shanghai Key Laboratory of Stomatology & Shanghai Research Institute of Stomatology, Shanghai 200011, China.
Cell reports
|August 31, 2024
概括
在头癌中,基因组乳酸化 (Kla) 预测免疫疗法反应不佳. 向介素-11 (IL-11) 可以逆转免疫抑制并改善治疗结果.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 基因组 lysine 乳糖化 (Kla) 是一种新兴的翻译后修饰.
- 克拉在瘤免疫逃逸中的作用尚不清楚.
- 头部和部状细胞癌 (HNSCC) 经常表现出对免疫疗法的耐药性.
研究的目的:
- 为了研究质母乳化在HNSCC免疫逃脱中的作用.
- 确定特定的乳化位点及其下游目标.
- 探索潜在的治疗策略,以乳化为目标,以改善免疫疗法.
主要方法:
- 在HNSCC患者样本中分析基因素乳酸化.
- 使用CUT&Tag.识别特定的乳化部位 (H3K9la) 和下游基因 (IL-11) .
- 研究CD8+T细胞中的IL-11信号通路 (JAK2/STAT3).
- 在体内使用IL11倒置和胆固醇修饰siIL11.11的研究.
主要成果:
- 激素乳化增加,特别是H3K9la,与HNSCC中免疫治疗反应不佳相关.
- H3K9la直接调节了互乐金-11 (IL-11) 的转录.
- IL-11通过JAK2 / STAT3信号激活CD8 + T细胞中的免疫检查点基因,促进瘤进展和T细胞功能障碍.
- 降低IL11和胆固醇修饰的siIL11逆转了免疫抑制,并在体内增强了免疫治疗的疗效.
结论:
- 基因素乳酸化,特别是H3K9la,是HNSCC中免疫逃逸的关键驱动因素.
- H3K9la-IL-11-JAK2/STAT3轴代表了一种新的免疫抑制机制.
- 向IL-11提供了一种有希望的策略,以克服HNSCC的免疫疗法耐药性.
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