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通过EZH2调节miR-155-5p的下调,通过SMAD2和TAB2促进前列腺癌细胞恶性瘤
Zhi-Jie Bai1, Jia-Yi Liu1, Wen-Zhou Xing1
1Department of Urology, Tianjin First Central Hospital, Tianjin, China.
The Kaohsiung journal of medical sciences
|January 9, 2025
概括
前列腺癌 (PCa) 涉及减少miR-155-5p表达由于增强剂的zeste 2 (EZH2) 介导的促进物甲基化. 这种表观遗传调节通过上调SMAD2和TAB2.2,促进PCa细胞的增殖和入侵.
科学领域:
- 分子生物学分子生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 癌症研究 癌症研究
背景情况:
- 微RNA-155 (miR-155) 在瘤中具有多种作用,但其在前列腺癌 (PCa) 中的具体功能尚不清楚.
- 在PCa中,miR-155-5p显著表达不足,这表明它具有抑制瘤的作用,需要进行调查.
研究的目的:
- 阐明控制PCa中的miR-155-5p表达的分子机制.
- 确定zeste 2 (EZH2) /miR-155-5p轴增强剂在PCa病变发生中的作用.
- 为了确定参与PCa进展的miR-155-5p的下游目标.
主要方法:
- 生物信息学分析,露西法酶记者分析,染色体免疫沉PCR,CCK-8分析,细胞迁移和入侵分析,RT-qPCR和西斑被使用.
- 评估了5-Aza-CdR (一种去甲基化剂) 对miR-155-5p表达和PCa细胞行为的影响.
- 双化酶试验被用于确认下游目标.
主要成果:
- 前列腺癌样本显示miR-155-5p表达减少和促进物甲基化增加.
- 发现EZH2与miR-155-5p促进体结合,通过H3K27me3甲基化介导其抑制.
- 确定SMAD2和TAB2是miR-155-5p的直接下游目标,它们的上调与PCa进展相关.
- 5-Aza-CdR治疗逆转了miR-155-5p抑制,并抑制了PCa细胞恶性行为.
结论:
- 以EZH2为媒介的促进剂高甲基化和随后的miR-155-5p抑制有助于前列腺癌的进展.
- EZH2 / miR-155-5p轴调节PCa细胞的增殖,上皮细胞-介质细胞转换 (EMT),迁移和通过SMAD2和TAB2入侵.
- 准EZH2/miR-155-5p通路可能为前列腺癌提供治疗策略.
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