单细胞RNA测序和综合生物信息学揭示了在肉症中新的线粒体生物标志物
Hongan Ying1, Wenhan Wang2, Lili Huang3
1Department of Geriatrics, Traditional Chinese Medicine Hospital of Huangyan, Taizhou, China.
Frontiers in molecular biosciences
|February 25, 2026
概括
一个新型的三基因线粒体特征 (CHCHD10,SAM50,MDH2) 显示了早期萨尔科佩尼亚诊断的前景. 这一发现可能会导致针对老化肌肉中的线粒体功能障碍的新疗法.
科学领域:
- 基因组学和分子生物学
- 衰老研究研究 衰老研究
- 线粒体生物学 线粒体生物学
背景情况:
- 标志着与年龄相关的骨肌损失和功能障碍的萨尔科佩尼亚,在全球范围内影响60岁以上成年人的10%.
- 目前的诊断方法往往会在较晚的时间发现肉类,因此需要早期诊断生物标志物.
- 线粒体功能障碍越来越被认为是导致肌肉衰老的因素.
研究的目的:
- 为了确定新的分子生物标志物,用于早期诊断肉类症.
- 为了研究线粒体基因表达在肉症中的作用.
- 利用已识别的生物标志物,开发一种用于诊断肉症的预测模型.
主要方法:
- 使用差异基因表达,加权基因共同表达网络分析和机器学习对多个转录基因数据集的综合分析.
- 单细胞RNA测序 (scRNA-seq) 用于确定细胞类型特定的基因表达模式.
- 在 Sarcopenia-like 条件下对 C2C12 核细胞进行定量 PCR 验证,并开发了一个 nomogram 预测模型.
主要成果:
- 发现一个保存的三基因线粒体特征 (CHCHD10,SAM50,MDH2) 在独立队列中显著失调.
- scRNA-seq揭示了不同的表达模式,突出了肌细胞中显著的线粒体变化.
- 整合了这三个基因的诺莫格拉姆模型实现了高诊断准确度 (AUC = 0.883),超过了传统参数;体外验证证证实了在类似于肉症的状态下生物标志物的下调.
结论:
- 三个基因的线粒体特征 (CHCHD10,SAM50,MDH2) 代表了早期发现肉症的有希望的生物标志物.
- 这种特征强调了线粒体功能障碍对肌肉衰老的贡献.
- 这些发现为开发针对线粒体的新疗法和监测治疗疗效提供了潜力.
相关概念视频
Mitochondria
21.0K
Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
21.0K
Ribosome Profiling
4.2K
Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
The technique...
4.2K


