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通过工程外体向BRIX1,诱导核应激以抑制癌症的进展
Yu Gan1,2, Qian Hao1,2, Tao Han3
1Fudan University Shanghai Cancer Center and Institutes of Biomedical Sciences, Fudan University, Shanghai, 200032, P. R. China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|October 30, 2024
概括
核蛋白BRIX1通过增强核糖体生物发生和抑制p53激活来促进癌症生长. 通过工程外体抑制BRIX1,阻止瘤生长,提高化疗疗效率.
科学领域:
- 分子生物学分子生物学
- 癌症研究 癌症研究
- 生物化学 生物化学
背景情况:
- 在癌症中,核糖体生物发生率升高,与瘤生长和进展相关.
- 向核糖体生物生成可以诱导核细胞压力,选择性地消除癌细胞.
研究的目的:
- 研究核蛋白BRIX1在调节核糖体生物发生和p53激活中的作用.
- 探索BRIX1作为癌症治疗的治疗标.
主要方法:
- 研究了BRIX1在前核糖体RNA (前rRNA) 处理中的作用及其与PeBoW复合体的相互作用.
- 通过调节MDM2和核糖体蛋白相互作用 (RPL5,RPL11) 来评估BRIX1对p53激活的影响.
- 开发了工程外生体 (iRGD-Exo-siBRIX1) 用于针对性地传递BRIX1-特定的siRNAs.
主要成果:
- BRIX1促进了rRNA前处理和PeBoW复合体的形成.
- BRIX1通过阻止MDM2-RPL5/RPL11相互作用来抑制p53激活,从而赋予化学抵抗.
- BRIX1的枯竭会引发核应激和p53的激活,抑制瘤的生长.
- iRGD-Exo-siBRIX1抑制了结直肠癌的生长,并在体内增强了5-FU化疗的疗效.
结论:
- 通过促进rRNA合成和抑制p53活性,BRIX1充当上蛋白质.
- 使用工程外体的向抑制BRIX1代表了癌症治疗的有希望的策略.
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