通过TIGAR调节ROS信号,诱导瘤微环境中的癌症调节反应
Eric C Cheung1, Douglas Strathdee2, David Stevenson2
1The Francis Crick Institute, London NW1 1AT, United Kingdom.
概括
反应性氧物种 (ROS) 影响胰腺癌. TIGAR基因调节影响瘤生长,转移和瘤微环境,影响胰腺管道腺癌 (PDAC) 的存活率.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症研究 癌症研究
背景情况:
- 活性氧物种 (ROS) 在癌症中具有复杂的作用,可能促进或抑制瘤生长.
- 抗氧化基因TIGAR (一种减少活性氧物种的酶) 在胰腺管腺癌 (PDAC) 进展中起着关键作用.
研究的目的:
- 研究TIGAR在调节转移能力和胰腺管道腺癌 (PDAC) 中瘤微环境中的作用.
- 确定TIGAR介导的ROS变化如何影响癌细胞内在性质和周围的肌层.
主要方法:
- 使用了TIGAR缺乏和过度表达的PDAC小鼠模型.
- 分析了瘤细胞迁移,入侵,上皮-介质细胞过渡 (EMT) 和ERK信号的变化.
- 评估TIGAR调节对细胞因子产生,纤维细胞激活和巨细胞招募的影响.
主要成果:
- 在PDAC细胞中TIGAR的损失增加了转移能力和降低了存活率,与ROS,EMT和增强的迁移/入侵相关.
- 在PDAC细胞中TIGAR的过度表达减少了转移潜力和迁移性表型.
- 缺少TIGAR的PDAC细胞分泌的细胞因子促进了支持瘤的纤维细胞表型,并吸引了前转移性巨细胞.
结论:
- 动态调节TIGAR会影响PDAC的进展和转移.
- 由TIGAR介导的ROS水平控制癌细胞自主特征和外部瘤微环境重塑.
- 向TIGAR和ROS通路可能通过影响瘤侵略和转移为PDAC提供治疗策略.
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