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一个 lncRNA介导的细胞衰老的代谢重新连接
Elena Grossi1, Francesco P Marchese1, Jovanna González1
1Center for Applied Medical Research, University of Navarra, Pamplona, Spain; Institute of Health Research of Navarra (IdiSNA), Pamplona, Spain.
Cell reports
|May 23, 2025
概括
衰老细胞仍然活跃,但它们的代谢变化尚不清楚. 一种名为sin-lncRNA的新长非编码RNA (lncRNA) 维持了这种代谢平衡,影响了氧化酸化,并可能治疗癌症.
科学领域:
- 细胞衰老 细胞衰老
- 分子生物学分子生物学
- 代谢重编程是一种代谢重编程.
背景情况:
- 衰老细胞虽然不增殖,但表现出显著的代谢活动.
- 控制衰老中的代谢重编程的精确机制尚未完全阐明.
- 长非编码RNAs (lncRNAs) 越来越多地被认为是它们在细胞过程中的角色.
研究的目的:
- 确定衰老细胞代谢重编程中的关键分子参与者.
- 描述一种新型长非编码RNA (lncRNA) 在衰老中的功能.
- 探索针对衰老相关代谢途径的治疗潜力.
主要方法:
- 鉴定和表征衰老诱导的长非编码RNA (sin-lncRNA).
- 分析sin-lncRNA与二利胺 S-苏西尼尔转移酶 (DLST) 的相互作用.
- 评估代谢参数,包括氧化酸化 (OXPHOS) 和细胞外酸化.
- 评估sin-lncRNA枯竭对卵巢癌细胞中西斯普拉丁诱导的衰老的影响.
主要成果:
- 在衰老过程中,sin-lncRNA被C/EBPβ强烈激活,并维持新陈代谢平衡.
- 失去了sin-lncRNA改变了氧化酸化,并重新连接线粒体代谢.
- sin-lncRNA促进DLST线粒体定位;其耗尽导致DLST核转位,并影响OXPHOS基因转录.
- sin-lncRNA的枯竭减少了氧气消耗,增加了细胞外酸性,并使卵巢癌细胞对西斯素敏感.
结论:
- sin-lncRNA是衰老细胞中代谢恒常的关键调节者.
- 这项研究揭示了特定于衰老细胞的RNA依赖的代谢重新连接机制.
- 向sin-lncRNA可能提供一种新的治疗策略,以提高癌症治疗疗效,特别是在抗思的病例中.
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