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甲基转移酶Set7/9控制PARP1的表达,并调节乳腺癌细胞对西斯的反应
Dmitry Myadelets1, Sergey Parfenyev1, Julia Vasileva1
1Institute of Cytology, Russian Academy of Sciences, 194064, St Petersburg, Russian Federation.
Biochemical and biophysical research communications
|December 3, 2023
概括
Set7/9蛋白在乳腺癌中至关重要,它影响DNA修复和对西斯普拉丁的耐药性. 降低Set7/9使PARP1稳定,导致耐药性,但在Set7/9缺乏细胞中,将西斯与尼拉帕里布结合克服了这一问题.
科学领域:
- 分子生物学分子生物学
- 癌症研究 癌症研究
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 特定于蛋白质的甲基转移酶Set7/9向了许多基因素和非基因素蛋白,影响了基因表达和细胞功能.
- Set7/9在瘤生长和瘤转变中起着复杂的,取决于癌症类型的作用.
- 它对DNA损伤信号传递和修复途径的参与越来越被认可.
研究的目的:
- 研究Set7/9在乳腺癌细胞过程中的作用,特别是DNA损伤反应和修复.
- 确定Set7/9表达,PARP1水平和乳腺癌中西斯普拉丁耐药性之间的关系.
- 评估结合西斯与PARP1抑制剂在Set7/9缺乏乳腺癌中的治疗潜力.
主要方法:
- 分析Set7/9在乳腺癌细胞中参与DNA损伤信号和修复.
- 在乳腺癌组织中,Set7/9和PARP1表达水平的相关性分析.
- 在HER2阳性和三阴性乳腺癌细胞系中对Set7/9水平的实验性操纵,以评估PARP1稳定性和西斯普拉丁耐药性.
- 在SET7/9缺乏细胞中实验室测试西斯普拉丁和尼拉帕里布之间的协同作用.
主要成果:
- 在乳腺癌组织中,Set7/9的表达下调,与PARP1水平相反相关.
- 减弱Set7/9导致PARP1mRNA和蛋白质稳定性增加,从而产生对西斯普拉丁的抗性.
- 与西斯丁和PARP1抑制剂尼拉帕里布的联合治疗显示出协同效应,克服了Set7/9缺乏细胞中的西斯丁耐药性.
结论:
- Set7/9在乳腺癌中对DNA损伤反应和修复起着重要作用.
- 由于Set7/9缺乏,通过PARP1稳定,促进了对青的耐药性.
- 与西斯普拉丁和尼拉帕里布的联合治疗为治疗Set7/9缺乏乳腺癌提供了一个有希望的策略.
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