在衰老过程中,PINK1/帕金介导的线粒改善了眼腺细胞中的线粒体功能障碍
Han Zhao1,2, Yue Zhang3,4,5,6, Yujie Ren7
1Department of Ophthalmology, The Second Xiangya Hospital of Central South University, Changsha, Hunan, China.
Investigative ophthalmology & visual science
|November 6, 2024
概括
衰老会损害眼腺功能,并通过增加氧化应激增加干眼. 增强细胞,细胞清洁过程,可以防止与年龄相关的损伤,并改善水分泌.
科学领域:
- 眼科医生 眼科 眼科
- 细胞生物学 细胞生物学
- 老年学是一门学科.
背景情况:
- 衰老显著影响眼腺功能,破坏眼睛表面平衡,导致干眼疾病.
- 线粒体衰变,受损线粒体的选择性降解,与衰老有关,但其在眼腺衰老中的确切作用尚未完全理解.
研究的目的:
- 为了研究线粒在与年龄相关的眼腺功能障碍中的作用.
- 探索调节线粒的潜力,作为干眼疾病的治疗策略.
主要方法:
- 使用年轻和中年C57BL/6J小鼠进行体内研究.
- 使用了线粒细胞衰变的激素拉帕米辛和抑制剂Mdivi-1.
- 采用组织学染色 (H&E,Masson,Oil Red O),西方涂抹,传输电子显微镜,免疫光学和单细胞RNA测序来评估细胞和分子变化.
主要成果:
- 衰老增加了氧化应激,反应性氧物种 (ROS) 生产和眼腺细胞的亡.
- 拉巴胺素诱导的线粒细胞活化减少了ROS,抑制了亡,并改善了眼腺组织学和眼分泌.
- Mdivi-1 通过抑制线粒体的作用,损害了线粒体功能,加剧了眼腺功能障碍.
结论:
- 衰老会损害眼腺细胞中的线粒体功能.
- 治疗策略增强线粒细胞衰变,同时保持线粒体功能,显示出治疗与年龄相关的干眼的前景.
更多相关视频
07:40Protection of H9c2 Myocardial Cells from Oxidative Stress by Crocetin via PINK1/Parkin Pathway-Mediated Mitophagy
Published on: May 26, 2023
1.1K
06:57Author Spotlight: Fluorescence-Based Quantification of Mitochondrial Membrane Potential and Superoxide Levels Using Live Imaging in HeLa Cells
Published on: May 12, 2023
7.4K
相关概念视频
Mitochondria
11.2K
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,...
11.2K
Lysosomal Hydrolases
3.8K
Lysosomes are the site for the degradation of macromolecules and biological polymers released during membrane trafficking events such as secretory, endocytic, autophagic, and phagocytic pathways. The membrane-enclosed area of the lysosome, called the lumen, contains hydrolytic enzymes active in an acidic environment. These acid hydrolases are functional at a pH between 4.5 and 5 and are involved in cellular processes such as cell signaling, energy metabolism, restoration of the plasma membrane,...
3.8K
