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从基于衰老的临床前模型和人类加速衰老范式对与年龄有关的骨质疏松症的洞察力
Robert J Pignolo1, Abhishek Chandra2
1Department of Medicine, Divisions of Geriatric Medicine and Gerontology, Endocrinology, and Hospital Internal Medicine, the Department of Physiology and Biomedical Engineering, and the Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN, United States.
细胞衰老及其分泌表型驱动与年龄相关的骨质损失和骨质疏松症. 向衰老细胞为骨质疏松症提供了一个潜在的治疗策略.
科学领域:
- 老年学是一门学科.
- 骨生物学 骨生物学 骨生物学
- 细胞衰老 细胞衰老
背景情况:
- 与年龄相关的骨质疏松症是一个重大的健康问题.
- 细胞衰老,以衰老相关的分泌表型 (SASP) 为特征,越来越多地涉及到衰老过程.
- 线粒体功能障碍与衰老和与年龄相关的疾病,如骨质疏松症有关.
研究的目的:
- 审查与年龄相关的骨质疏松症的临床前模型.
- 探索细胞衰老和SASP在骨质损失中的作用.
- 调查线粒体功能障碍和非遗传衰老模式对骨质疏松症的贡献.
主要方法:
- 使用临床前动物模型 (端粒功能障碍,辐射,遗传/药物老化细胞向).
- 在小鼠中通过mtDNA聚合酶玛 (Polg) 基因突变检查线粒体功能障碍.
- 评估了非遗传的人类加速衰老综合征 (骨卸载,过早的卵巢衰竭,儿童癌症幸存者).
主要成果:
- 临床前模型支持细胞衰老和SASP在衰老开始的骨损失中发挥关键作用.
- SASP调解有害的局部和全身骨效应.
- 线粒体功能障碍和非遗传衰老综合征突出显示了诸如脂性血统切换,Wnt抑制和老年骨质疏松症中骨质细胞形成的增加等途径.
结论:
- 细胞衰老是与年龄相关的骨质损失的关键驱动因素.
- 准衰老细胞及其SASP是一种有前途的骨质疏松症治疗途径.
- 了解非遗传衰老综合征,可以了解老年骨质疏松症的机制.
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