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p140Cap调节美瓦酸路径,降低细胞迁移,增强乳腺癌细胞中药物敏感性

Giorgia Centonze¹, Dora Natalini¹, Silvia Grasso¹

¹Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Torino, Via Nizza 52, 10126, Torino, Italy.

Cell death & disease

|December 20, 2023

概括

p140Cap蛋白增强乳腺癌中的美瓦酸途径,增加胆固醇合成. 这一发现表明p140Cap作为对他类药物治疗反应的生物标志物.

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:

p140Cap是乳腺癌 (BC) 和神经母细胞瘤中已知的瘤抑制剂.
它在瘤新陈代谢中的功能,特别是美酸盐 (MVA) 途径,在很大程度上是未被探索的.
该MVA通路对于胆固醇和异oprenoid合成至关重要,并且在癌症中经常失调.

研究的目的:

为了研究p140Cap在调节乳腺癌细胞中美瓦酸途径中的作用.
了解p140Cap如何影响胆固醇代谢及其对癌症进展的下游影响.

主要方法:

使用乳腺癌细胞模型进行体外和体外研究.
对美瓦酸路径流量及其关键酶HMGCR的分析.
评估胆固醇的合成,局部化和细胞迁移.
在他类药物和化疗治疗下评估细胞活力.

主要成果:

p140Cap过度表达通过转录和后翻译上调HMGCR来增加MVA通路的流量.
增强的胆固醇合成导致血局部化增加,并在脂质中减少Rac1信号传递.
这会以胆固醇依赖的方式损害细胞膜流动性和迁移.
表达Cap的BC细胞对他类药物和化疗具有协同敏感性.

结论:

在乳腺癌中,p140Cap在调节美瓦酸途径方面发挥着新的作用.
p140Cap影响胆固醇代谢,影响细胞迁移和活力.
p140Cap可以作为一种预测生物标志物,用于对乳腺癌患者进行针对性他类药物治疗的分层.

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