抗瘤免疫依赖于通过单细胞驱动的反应准组织稳态,而不是直接瘤细胞毒性
Nicholas Koelsch1, Faridoddin Mirshahi2,3, Hussein F Aqbi4
1Department of Microbiology & Immunology, Virginia Commonwealth University School of Medicine, Richmond, VA 23298, USA.
bioRxiv : the preprint server for biology
|June 21, 2024
概括
饮食纠正逆转了与代谢功能障碍相关的脂肪肝疾病 (MAFLD) 到肝癌 (HCC) 的进展. 恢复肝脏组织完整性,而不仅仅是免疫激活,为癌症预防创造了一个瘤敌对的环境.
科学领域:
- 肝病学 肝病学是一种肝病学.
- 免疫学 免疫学 免疫学
- 癌症生物学 癌症生物学
背景情况:
- 代谢功能障碍相关的脂肪肝疾病 (MAFLD) 是肝细胞癌 (HCC) 的前体.
- 导致MAFLD进展为HCC的免疫机制尚未完全理解.
研究的目的:
- 在MAFLD向HCC的进展过程中调查免疫微环境.
- 确定饮食干预对MAFLD驱动的HCC和相关免疫反应的影响.
主要方法:
- 使用了一种慢性西方饮食 (WD) 鼠标模型.
- 采用单核RNA测序来追踪MAFLD的进展和对饮食纠正的反应.
- 分析了免疫细胞种群及其与肝细胞的相互作用.
主要成果:
- 在MAFLD期间,癌症发生开始,在HCC缓解后观察到休眠瘤细胞.
- 肝脏表现出积极的免疫反应,向恒温的树突细胞和肝细胞,而不是主要是瘤细胞.
- 自然杀手T (NKT) 细胞在WD中占主导地位,单细胞在HCC进展过程中增加;饮食纠正增强了单细胞驱动的保护性免疫力.
- 肝脏组织的完整性和恒常通路,而不是仅仅是免疫激活,决定瘤的命运.
- 与健康对照群不同,与HCC保护相关的独特免疫模式需要免疫重编程.
结论:
- 免疫通路具有双重作用,根据目标细胞塑造不同的结果.
- 恢复组织平衡和再生对于创建瘤敌对的微环境至关重要.
- 组织重塑策略对于癌症的预防和治疗至关重要,优于瘤导向的方法.
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