针对CD4+T细胞上的活性因子受体1C进行癌症免疫治疗
Ying Zheng1,2, Andriana Lebid1,2, Liam Chung1,2
1Bloomberg~Kimmel Institute for Cancer Immunotherapy, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
Oncoimmunology
|January 18, 2024
概括
在癌症患者中发现活性素水平升高,与瘤负担相关. 阻断激素-ActRIC信号传递抑制免疫抑制调节T细胞 (Tregs),提供了一个有前途的癌症免疫治疗策略.
科学领域:
- 免疫学 免疫学 免疫学
- 内分泌学 在内分泌学.
- 在瘤学瘤学.
背景情况:
- 活性蛋白是TGF-β超级家族的一部分,在内分泌系统中已知,但在免疫和癌症方面尚未研究.
- 系统性激素水平升高与小鼠和癌症患者的瘤负担相关.
研究的目的:
- 研究活性素在免疫系统中的作用,特别是在癌症中.
- 探索激素诱导的CD4+T细胞分化成诱导调节性T细胞 (iTregs).
- 评估阻断癌症中的activin-ActRIC信号传递的治疗潜力.
主要方法:
- 关于CD4+T细胞分化的体外研究.
- 数据库和免疫细胞子集的qRT-PCR分析.
- 在体外和体内使用ActRIC缺乏细胞和抗ActRIC抗体的研究.
- Treg抑制试验和瘤进展研究.
主要成果:
- 活性素促进CD4+T细胞分化成Foxp3+iTregs,特别是有限的TGF-β.
- 活性因子受体1c (ActRIC) 独特地表达在Tregs上,并在iTreg分化过程中上调调节.
- 在小鼠中,ActRIC缺乏会损害iTreg生成,并减少瘤的进展.
- 阻断激素-ActRIC信号传递会减少瘤微环境中的Foxp3+细胞.
结论:
- 活性蛋白-ActRIC信号驱动癌症中免疫抑制性iTregs的积累.
- 阻止这种途径是癌症免疫治疗的潜在疾病特异性策略.
- 向activin-ActRIC信号可能通过调节免疫反应来阻碍瘤的进展.
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