GDF15的上下文依赖性作用: GDF15+与瘤相关的巨细胞通过增强细胞形成来抑制OSCC的进展
Xinyu Zhou1,2, Zhihang Zhou3, Houyu Ju1,2
1Department of Oral and Maxillofacial-Head and Neck Oncology, Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, P. R. China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|March 13, 2026
概括
增长差异化因子15 (GDF15) 在口腔癌中起着双重作用. 虽然分泌的GDF15促进瘤,但来自巨细胞的GDF15有助于免疫反应和瘤回归,提供了新的治疗见解.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 分子生物学分子生物学
背景情况:
- 增长分化因子15 (GDF15) 中和抗体可以在固体瘤中克服对免疫检查点阻塞 (ICB) 的抵抗.
- GDF15在癌症中的双重作用,在分泌时促进瘤,但在免疫细胞产生时可能有助于治疗,仍然不清楚.
研究的目的:
- 通过单细胞RNA测序来研究GDF15在口腔状细胞癌 (OSCC) 中的上下文依赖功能.
- 探索GDF15在巨细胞中的作用及其对抗瘤免疫和ICB治疗的影响.
主要方法:
- 在ICB治疗之前和之后,OSCC样本的单细胞RNA测序.
- 使用Gdf15条件淘汰赛小鼠 (Gdf15fl/flLyz2Cre) 来评估GDF15在巨细胞中的作用.
- 研究分子机制,包括NF-κB信号传递,通过巨细胞GDF15影响抗瘤反应.
主要成果:
- 表达GDF15的巨细胞在ICB敏感的OSCC治疗后得到丰富,与瘤回归相关.
- 巨细胞特异性GDF15缺乏通过减少CD8+T细胞透来加速瘤进展.
- 巨GDF15通过NF-κB通路激活增强了瘤细胞的细胞酶和抗原交叉呈现到CD8+ T细胞.
结论:
- GDF15的细胞源决定了它的功能:GDF15+巨细胞在OSCC中产生抗瘤作用,而分泌的GDF15则具有促瘤作用.
- 用抗体向分泌的GDF15可能是有益的,而理解巨细胞GDF15的作用对于优化ICB治疗至关重要.
- 这些发现澄清了GDF15在癌症免疫学和治疗中的复杂,双边性质.
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