结合蛋白1通过通过p21依赖的AUF1-ARE调节轴破坏MMP2mRNA的稳定性来抑制瘤入侵
Yulei Wang1, Wenhang Lin1, Yixuan Liao1
1Cancer Center, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China.
Biochemical and biophysical research communications
|October 14, 2025
概括
结合蛋白1 (SELENBP1) 通过p21和AUF1依赖的途径破坏MMP2mRNA的稳定,从而抑制癌症的侵袭. 恢复这种SELENBP1轴可能为侵袭性癌症提供新的治疗策略.
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:
- 结合蛋白1 (SELENBP1) 是一种已知的瘤抑制剂,在许多固体瘤中下调.
- 以前的研究表明,SELENBP1通过p21诱导抑制细胞循环进展.
- 在此之前,SELENBP1抗侵袭功能背后的分子机制尚不清楚.
研究的目的:
- 为了阐明SELENBP1抗侵入性功能的分子基础.
- 确定参与SELENBP1介导入侵抑制的关键分子参与者.
- 研究SELENBP1在调节细胞外矩阵重塑中的作用.
主要方法:
- 在膀和结肠癌细胞模型中稳定的SELENBP1过度表达.
- 细胞入侵,迁移和矩阵金属蛋白酶2 (MMP2) 表达的分析.
- 研究MMP2mRNA破坏稳定机制,包括3'-未翻译区域 (3'-UTR) 相互作用.
- 评估AU富元素 (ARE) 结合蛋白AUF1的作用和p21的依赖性.
主要成果:
- 过度表达SELENBP1抑制了细胞入侵,并选择性地降低了MMP2.
- 通过其3'-UTR,SELENBP1破坏MMP2mRNA的稳定,并对AUF1.1进行上调.
- AUF1以一种依赖于ARE的方式调解SELENBP1诱导的MMP2抑制.
- 通过SELENBP1介导的途径需要功能性p21.
结论:
- 一个新的SELENBP1-p21-AUF1-MMP2信号轴被确定,将SELENBP1与MMP2.2的转录后调节联系起来.
- 通过这种途径抑制侵袭,SELENBP1充当多功能瘤抑制剂.
- 这一途径代表了入侵性癌症的潜在治疗点.
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