准Pin1以克服MSS结直肠癌中的免疫抑制瘤微环境
Jian Wang1,2, Shuxin Tang3, Jinhua Fan4
1Department of Oncology, Chongqing University Jiangjin Hospital, Chongqing, China.
Frontiers in immunology
|November 17, 2025
概括
Pin1通过创建免疫抑制瘤微环境 (TME) 来促进微卫星稳定性 (MSS) 和结直肠癌 (CRC). 抑制Pin1可以通过向NF-κB-CCL3-CCR5通路来克服MSSCRC中的免疫疗法耐药性.
科学领域:
- 在瘤学瘤学.
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
背景情况:
- 微卫星稳定性 (MSS) 大肠直肠癌 (CRC) 由于免疫抑制性瘤微环境 (TME),对免疫治疗的反应不佳.
- 乙-乙 cis-trans 异构酶 (PIN1) 在癌症中过度表达,并影响TME免疫抑制,但其在MSS CRC中的特定作用未得到充分研究.
研究的目的:
- 调查PIN1在MSS CRC中的作用及其对TME的影响.
- 探索PIN1作为一种潜在的治疗点,用于增强MSS CRC.中的免疫疗法.
主要方法:
- 分析了411名CRC患者的基因表达特征 (TCGA-COAD),以确定PIN1作为生物标志物.
- 使用细胞系,小鼠模型 (CT26),Pin1抑制剂和抗PD-1疗法进行了体外和体内研究.
- 评估了细胞增殖,迁移,细胞亡和免疫细胞透.
主要成果:
- 在MSSCRC中,PIN1过度表达,与减少CD4+和CD8+T细胞透相关.
- 通过PIN1敲击抑制了MSSCRC细胞的增殖,迁移和亡.
- 联合Pin1抑制和PD-1阻断通过减少Tregs,抑制癌症相关纤维细胞 (CAF) 和增加CD8+T细胞,改善了免疫治疗.
结论:
- Pin1通过NF-κB-CCL3-CCR5轴促进MSS CRC中的免疫抑制性TME,有助于进展和免疫治疗耐药性.
- 针对Pin1介导途径提供了一种潜在的策略,以克服MSSCRC中的免疫疗法耐药性.
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