细胞衰老在健康,疾病和镜头衰老中的作用
Ying Qin1, Haoxin Liu1, Hongli Wu1,2
1Pharmaceutical Sciences, College of Pharmacy, University of North Texas Health Science Center, Fort Worth, TX 76107, USA.
Pharmaceuticals (Basel, Switzerland)
|February 26, 2025
概括
透镜上皮细胞 (LEC) 中的细胞衰老通过氧化应激和炎症驱动白内障的形成. 老年治疗干预措施在减少老化的细胞和保持透镜透明度方面表现有前途.
科学领域:
- 细胞和分子生物学 细胞和分子生物学
- 眼科医生 眼科 眼科
- 老年学是一门学科.
背景情况:
- 细胞衰老,一种不可逆转的细胞循环停止状态,在组织平衡,衰老和疾病中起着双重作用.
- 透镜上皮细胞 (LEC) 的慢性衰老加速衰老,并导致白内障,这是一个主要的与年龄相关的眼睛病理.
- 氧化应激是LEC衰老的关键触发因素,影响透镜的透明度和功能.
研究的目的:
- 审查衰老在透镜上皮细胞功能中的作用及其与与年龄相关的白内障发生的联系.
- 检查LEC衰老背后的分子机制,包括氧化应激和线粒体功能障碍.
- 分析新兴的老年治疗策略,以减轻LEC衰老和白内障进展.
主要方法:
- 综合了关于衰老分子机制的发现,重点是氧化应激,线粒体功能障碍和与衰老相关的分泌表型 (SASP).
- 通过应激反应,DNA损伤和抗氧化剂防御,探索了将LEC衰老与白内障形成联系在一起的证据.
- 分析了近期的老化药物和老形药物的进展,以了解它们在治疗LEC衰老方面的潜力.
主要成果:
- LEC衰老是由氧化损伤,线粒体功能障碍和减少氧化稳定性损害引起的,激活关键衰老路径 (p53/p21,p16/Rb).
- 衰老的LECs通过SASP引发炎症,降低再生能力,破坏透镜平衡,导致白内障的形成.
- 诸如达萨提尼布,奎尔塞丁和美特福明等老年治疗药物显示出降低老化细胞负担和调节SASP的潜力.
结论:
- 由氧化应激和线粒体功能障碍驱动的LEC衰老是与年龄相关的白内障发生的一个重要因素.
- 衰老的LEC和它们的炎症性SASP的积累会损害透镜功能并加速衰老.
- 老年疗法提供了一种有前途的途径,通过向老化细胞及其相关的炎症来保护透镜的透明度.
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