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Published on: August 4, 2019
响应p53的CMBL重编程葡萄糖代谢,并通过破坏酸果酶PFKP的稳定性来抑制癌症的发展
Yingdan Huang1, Chen Xiong2, Chunmeng Wang3
1Fudan University Shanghai Cancer Center and Institutes of Biomedical Sciences, Fudan University, Shanghai 200032, China; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, China; Department of Lymphoma Medicine (Breast Cancer & Soft Tissue Tumor Medicine), Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430079, China.
这种类似于碳基甲丁醇酶 (CMBL) 的蛋白质通过抑制糖解抑制结肠直肠癌 (CRC) 的生长. 由于CMBL缺乏,瘤对糖解抑制剂具有敏感性,这表明了新的治疗策略.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 在瘤学瘤学.
背景情况:
- 有氧糖解是癌症的标志,推动瘤的进展,并提供治疗点.
- 了解结直肠癌 (CRC) 中糖解的调节机制对于开发有效治疗非常重要.
研究的目的:
- 为了研究人体碳素甲基丁利达酶同源素 (CMBL) 作为CRC中的瘤抑制剂的作用.
- 阐明CMBL调节糖解并影响CRC生长的分子机制.
主要方法:
- 研究了CMBL与E3泛素结合酶TRIM25和糖溶性酶脂蛋白酶-1血小板类型 (PFKP) 的相互作用.
- 评估了子宫外CMBL表达对PFKP无化和降解的影响.
- 研究了p53对CMBL的转录调节及其对糖解的影响.
- 在CMBL缺陷模型中评估瘤对糖解抑制剂的敏感性.
主要成果:
- 在CRC中,CMBL通过重编程糖解作用作为瘤抑制剂.
- CMBL 增强了 TRIM25 介导的 PFKP 的泛化和蛋白质酶体降解.
- p53通过转录激活CMBL,导致p53依赖的糖解抑制.
- 缺乏CMBL会损害p53的糖溶性抑制,并增加对2-脱氧葡萄糖治疗的敏感性.
结论:
- 通过通过PFKP降解抑制糖解,CMBL抑制CRC生长.
- CMBL是一种p53调节的瘤抑制剂,影响癌症代谢.
- 针对CMBL或在CMBL缺乏的CRC中使用糖解抑制剂是一个有前途的治疗途径.
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