与瘤相关的中性粒细胞减弱了肝细胞癌的免疫敏感性
Jia Ming Nickolas Teo1, Zhulin Chen1, Weixin Chen1
1School of Biomedical Sciences, Li Ka Shing Faculty of Medicine, The University of Hong Kong , Hong Kong, China.
The Journal of experimental medicine
|December 5, 2024
概括
与瘤相关的中性粒细胞 (TAN) 是多种多样的. SiglecFhi TANs通过驱动免疫逃避和不良预后,促进代谢功能障碍相关的脂肪肝肝炎肝细胞癌 (MASH相关的HCC),表明向的TAN去除可以改善免疫疗法.
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:
- 与瘤相关的中性粒细胞 (TAN) 呈现异质性,影响它们在癌症发展中的作用.
- 在肝细胞癌 (HCC) 中TANs的特定作用因病因而异,例如病毒性与代谢功能障碍相关的脂肪肝炎 (MASH).
研究的目的:
- 调查TAN对MASH相关的HCC与病毒相关的HCC的影响差异.
- 阐明特定的TAN子集对MASH相关的HCC进展和免疫逃避有所贡献的机制.
- 评估针对MASH相关的HCC中TAN的治疗潜力.
主要方法:
- 在MASH相关的HCC和病毒相关的HCC模型中对TAN种群的比较分析.
- 确定促进特定TAN子集的因素 (例如,亚麻酸,GM-CSF).
- 评估SiglecFhi TANs的前瘤功能,包括TGFβ分泌,促进干性,增殖,迁移和抑制抗原呈现.
- 对SiglecFhi TAN枯竭对瘤免疫性和免疫治疗反应的影响的评估.
- 西格莱菲TAN特征与患者预后和免疫治疗结果的相关性.
主要成果:
- 与MASH相关的HCC中SiglecFhi TANs占主导地位,并且与与病毒相关的HCC相比,显著影响其发展.
- 与MASH相关的HCC微环境中的氨酸和GM-CSF推动了c-Myc驱动的SiglecFhi TANs的扩张.
- 西格莱菲TANs通过TGFβ分泌促进HCC的进展,增强干性,增殖和迁移.
- 西格莱菲TANs抑制瘤细胞抗原的呈现,有助于免疫逃避.
- 删除SiglecFhi TAN增强了瘤免疫性,并使MASH相关的HCC模型对免疫治疗敏感.
- 在HCC患者中,高SiglecFhi TAN签名与预后不佳和对免疫疗法的耐药性相关.
结论:
- 为了了解它们在癌症中的多样性,特别是MASH相关的HCC中,TAN异质性至关重要.
- 西格莱菲TAN是MASH相关的HCC进展和免疫抑制的关键驱动因素.
- 针对SiglecFhi TANs是一个有前途的策略,以克服MASH相关的HCC中的免疫疗法抵抗性.
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