亲炎性巨细胞释放CXCL5,以调节T细胞功能,并限制αPD-1在肥胖症驱动的肝癌中产生的影响
Taojian Tu1, Handan Hong1, Diala Alhousari1
1Pharmacology and Pharmaceutical Sciences, Mann School of Pharmacy, University of Southern California, 1985 Zonal Ave., Los Angeles, CA 90033, USA.
像CXCL5这样的中性粒细胞激活化学基因 (NAC) 在肝癌进展和免疫检查点治疗耐药性方面发挥着关键作用. 向CXCL5提供了一种新的治疗策略,用于增强化驱动性肝癌的抗瘤免疫力.
科学领域:
- 免疫学 免疫学 免疫学
- 在瘤学瘤学.
- 肝病学 肝病学是一种肝病学.
背景情况:
- 肥胖症是肝癌发展的重要危险因素.
- 肥胖症患者往往对免疫检查点治疗 (CPI) 的反应不佳.
- 中性粒细胞激活化学基因 (NACs) 与癌症进展和免疫逃避有关.
研究的目的:
- 调查NACs,特别是CXCL5在肥胖症驱动性肝癌的背景下的作用.
- 探索将CXCL5作为治疗策略与CPI结合使用的潜力.
主要方法:
- 使用了Pten删除诱导的肝癌 (LiPten) 鼠标模型和高脂肪饮食+CCl4纤维化模型.
- 研究了向CXCL5及其受体CXCR2的 in vitro 和 in vivo 的影响.
- 通过ANOVA和t测试分析了免疫细胞群和瘤进展.
主要成果:
- 在肥胖症相关的肝癌中,CXCL5的调节显著上升 (>100倍).
- 抑制CXCL5,但不抑制其受体CXCR2,在与αPD-1结合时抑制瘤进展和纤维化.
- 发现CXCL5抑制了CD4+T细胞的招募,并增强了CD8+T细胞的细胞毒性.
结论:
- CXCL5在T细胞招募中表现出一种新的抑制作用,超出了中性粒细胞化学反应范围.
- 准CXCL5为提高肝癌中CPI疗效提供了一个有希望的治疗途径.
- 研究结果表明,NAC具有与癌症治疗相关的更广泛的免疫调节功能.
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