在三阴性乳腺癌中通过PML-mTOR-RONIN核复合体调节核细胞基因表达和衰老
Younes Medkour1, Catherine Rosa Dufour1, Lingwei Han1,2
1Rosalind and Morris Goodman Cancer Institute, McGill University, Montréal, QC, Canada.
Oncogene
|November 8, 2025
概括
在三阴性乳腺癌 (TNBC) 中,抑制促细胞白血病蛋白 (PML) 诱导有益的抗癌衰老. 这涉及一种新型的PML-mTOR-RONIN复合体调节核糖体蛋白质基因,提供新的治疗策略.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 细胞衰老 细胞衰老
背景情况:
- 三重阴性乳腺癌 (TNBC) 是具有不良预后和有限治疗的侵袭性.
- 抗癌治疗可以诱导衰老,但它可能通过衰老相关的分泌表型 (SASP) 促进瘤发生.
- 了解衰老调节对于有效的TNBC治疗至关重要.
研究的目的:
- 研究promyelocytic白血病蛋白 (PML) 在TNBC中的作用.
- 阐明PML沉默引发抗癌衰老反应的机制.
- 确定TNBC的新型治疗点.
主要方法:
- 功能性基因组学用于识别PML调节的基因.
- 基因沉默和重新引入的实验 (RPL38,RPL39L,RPS14).
- 染色体免疫沉和西部抹迹用于研究蛋白质复合体和表达水平 (PML,mTOR,RONIN).
主要成果:
- 在TNBC中抑制PML会诱导一种有益的衰老表型.
- 特定核糖体蛋白 (RP) 基因的下调与TNBC的不良临床结果有关.
- 一个新的PML-mTOR-RONIN转录复合体调节RP基因表达.
- 罗宁在TNBC中升高,其沉默模仿PML缺陷细胞衰老.
结论:
- 在TNBC中,PML充当瘤基因,其沉默触发了抗瘤原生的衰老.
- PML-mTOR-RONIN复合体是TNBC中RP基因的关键调节者.
- 向RONIN或使用诱导衰老的疗法/老化药物对TNBC治疗有希望.
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