通过调节RIG-I介导的先天性免疫信号,PFAS促进结直肠癌的进展
Chengming Ding1, Guangwei Tao1, Guodong Chen1
1The First Affiliated Hospital, Department of Hepatopancreatobiliary Surgery, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China.
Molecular immunology
|November 25, 2024
概括
基基甲基甘氨酸胺合成酶 (PFAS) 通过抑制RIG-I途径促进结直肠癌 (CRC) 的进展和免疫逃避. 减少PFAS表达与更好的生存相关,表明其作为CRC的诊断和预后生物标志物的潜力.
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:
- 基基甲基糖胺氨酸合成酶 (PFAS) 对于 de novo purin 合成至关重要.
- 与瘤相关的分子模式 (DAMPs) 触发了对抗瘤反应的先天免疫力.
- PFAS在癌症逃避天生的免疫力中的作用在很大程度上仍未被探索.
研究的目的:
- 研究PFAS通过哪些机制影响结肠直肠癌中RIG-I受体 (RLR) 介导的NF-κB轴.
- 探索PFAS在CRC瘤微环境中的先天性免疫逃避中的作用.
主要方法:
- 定量实时PCR (qRT-PCR),免疫组织化学 (IHC) 和西部涂抹评估了CRC组织中的PFAS表达.
- 生存率,COX回归和ROC曲线分析评估了PFAS与临床病理特征和预后的相关性.
- 细胞增殖,入侵,斑块测定,记者测定和共免疫沉阐明了PFAS在免疫信号抑制中的机械作用.
主要成果:
- PFAS表达在CRC组织中升高,并与晚期AJCC阶段,淋巴结转移和复发相关.
- 高的PFAS表达与较差的患者存活率相关,并促进CRC细胞增殖和入侵.
- 通过向RIG-I,PFAS抑制干扰素-β (IFN-β) 和ISG56表达,从而抑制RIG-I介导的先天免疫信号传递.
结论:
- 作为一个独立的预后风险因素和结直肠癌的潜在诊断生物标志物.
- 通过抑制RIG-I天生的免疫路径,PFAS促进CRC的进展和免疫逃避.
- 向PFAS可能为结直肠癌治疗提供了一个新的治疗策略.
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