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Updated: Jun 23, 2025

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Purification of Ubiquitinated p53 Proteins from Mammalian Cells
Published on: March 21, 2022
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USP11通过调节p53-p21轴通过MDM2二氧化化调节线粒的进展和衰老
Won-Joo Kim1, Abdul Basit1, Jae-Ho Lee1
1Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon, 443-721, South Korea; Department of Biomedical Sciences, The Graduate School, Ajou University, Suwon, 443-721, South Korea.
Biochemical and biophysical research communications
|June 20, 2024
概括
在癌症中过度表达的削弱USP11,通过稳定p53蛋白质来抑制细胞增殖. 这种机制涉及USP11调节MDM2,为结直肠和乳腺癌提供潜在的治疗点.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 在结直肠癌 (CRC) 和乳腺癌中,USP11过度表达,与细胞增殖和细胞死亡减少有关.
- USP11在癌症进展中的作用及其精确的分子机制仍然不完全理解.
研究的目的:
- 研究USP11在癌细胞增殖和细胞周期调节中的功能.
- 阐明USP11影响p53通路的分子机制.
- 确定USP11在细胞衰老中的作用.
主要方法:
- 使用遗传方法的USP11消耗.
- 细胞增殖试验. 细胞增殖试验.
- 细胞周期分析.
- 西部涂抹测试以评估蛋白质水平和半衰期 (p53,MDM2).
- 对mRNA水平的分析 (p21).
- 立方体检测测试. 在线检测.
- 老化诱导试验.老化诱导试验.
主要成果:
- USP11的耗尽抑制了癌细胞的增殖,并延迟了细胞周期的进展.
- 由于延长半衰期,USP11的耗尽导致p53蛋白水平增加.
- 由于USP11的耗尽,p53依赖的p21mRNA水平升高.
- 通过增强的多比基因化,USP11的耗尽减少了MDM2的半衰期,这表明USP11是一种MDM2二基因化酶.
- USP11的耗尽促进了细胞衰老,这种方式取决于双基因酶的活性.
结论:
- USP11作为MDM2的二维基因酶,调节MDM2-p53-p21轴.
- USP11在促进癌细胞增殖和抑制衰老方面发挥着重要作用.
- USP11是结直肠和乳腺癌的潜在治疗点.
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