在人类肝癌中,构成性光形蛋白1 ubiquitinates-interleukin-1受体辅助蛋白在人类肝癌中
Kuan Cao1,2,3, Zhiyi Liu1,2,3, Jin Liu1,2,3,4
1Institute of Digestive Diseases, Xuzhou Medical University, No. 84 West Huaihai Road, Xuzhou, 221002, Jiangsu, China.
Journal of cancer research and clinical oncology
|September 12, 2023
概括
构成性光形蛋白1 (COP1) 通过上调互白素-1受体辅助蛋白 (IL1RAP) 和激活核因子kappa B (NF-κB) 信号来促进肝癌细胞的增殖. 这个COP1/IL1RAP/NF-κB轴代表了肝癌的潜在治疗标.
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:
- 构成性光形蛋白1 (COP1) 与各种癌症有关,并在肝癌中升级调节.
- COP1在人类肝癌进展中的确切作用在很大程度上仍未确定.
研究的目的:
- 为了阐明COP1在肝癌中的功能.
- 确定COP1相互作用蛋白和参与肝癌扩散的下游信号通路.
主要方法:
- 西方斑块和免疫组织化学评估临床样本中的COP1表达.
- 在HepG2和Huh7细胞中进行细胞增殖测定,COP1过度表达和淘汰.
- 酵母两杂交查和共免疫沉 (co-IP) 以识别和确认COP1相互作用的蛋白质.
- 免疫光染色和NF-κB激活的分析.
- 在临床样本中对COP1和IL1RAP蛋白水平的相关性分析.
主要成果:
- 与正常组织相比,肝癌组织中的COP1表达显著上调.
- 过度表达COP1增强了肝癌细胞的增殖,而COP1降低抑制了它.
- 鉴定出IL1RAP是一种COP1相互作用蛋白,COP1稳定其与膜结合的形式 (mIL1RAP).
- COP1调节mIL1RAP,促进NF-κB (p50/p65) 激活,其水平与临床样本中的mIL1RAP呈正相关.
结论:
- COP1调节IL1RAP的稳定性,并因此激活NF-κB信号通路.
- 在COP1/IL1RAP/NF-κB轴促进肝癌细胞的增殖.
- 这一轴为肝癌治疗提供了一个有前途的治疗标.
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