TNFR2信号传递促进单细胞-MDSC分化和免疫抑制媒介的产生
Yuta Tsuji1, Masaki Inoue1, Tomoya Okuda1
1The Faculty of Pharmaceutical Sciences, Laboratory of Cellular and Molecular Physiology, Kobe Gakuin University, Japan.
FEBS letters
|February 25, 2026
概括
促进瘤的髓质衍生抑制细胞 (MDSCs) 依赖于TNF受体2型 (TNFR2) 信号传递. 向TNFR2可以调节MDSC功能,并通过减少免疫抑制来增强癌症治疗的潜力.
科学领域:
- 免疫学 免疫学 免疫学
- 癌症生物学 癌症生物学
- 细胞信号传递 细胞信号传递
背景情况:
- 骨髓原抑制细胞 (MDSC) 是瘤微环境的关键调节者,促进癌症的进展和治疗耐药性.
- MDSCs表达高水平的TNF受体2型 (TNFR2),但其特异性功能被TNF-α对TNFR1和TNFR2的双重作用所掩盖.
研究的目的:
- 研究TNFR2信号传导在MDSC的功能和分化中的特定作用.
- 评估TNFR2作为调节癌症中MDSC介导免疫抑制的潜在治疗标.
主要方法:
- 使用TNFR2-淘汰赛小鼠产生GM-CSF诱导的MDSCs.
- 使用TNFR2选择性激动剂 (scR2agoTNF-Fc) 来刺激MDSCs.
- 评估了TNFR2调制对MDSC抑制能力和效应分子表达的影响.
主要成果:
- 通过TNFR2激活,维持了一个高度抑制的单细胞MDSC子集.
- TNFR2 缺陷显著降低了MDSC介导的T细胞反应抑制.
- TNFR2信号调节了关键的免疫抑制分子,包括可诱导的氧化合成酶 (iNOS) 和互白素-10 (IL-10).
结论:
- 在维护MDSCs的免疫抑制功能方面,TNFR2起着至关重要的作用.
- 向TNFR2代表了一种有希望的治疗策略,以抵消MDSC驱动的癌症免疫抑制.
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