一个针对衰老和循环的细胞内尼古丁胺二核酸策略,以减弱衰老相关的表型
Jian Liu1,2, Mingjie Rong1,2, Chen Liu1
1State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China.
ACS nano
|September 5, 2025
概括
这项研究引入了一种针对衰老细胞的新系统,并恢复尼古丁胺氨基二核酸 (NAD+) 水平,有效地减少衰老的表型. 这种方法对治疗与年龄相关的疾病和改善细胞健康具有前景.
科学领域:
- 老年学和细胞衰老
- 生物医学工程和药物交付
- 分子生物学与新陈代谢
背景情况:
- 细胞衰老是生物衰老和与年龄相关的疾病的关键驱动因素.
- 尼古丁胺氨基二核酸 (NAD+) 对细胞过程和衰老至关重要,具有老年治疗潜力.
- 由于细胞吸收不良,不稳定性和缺乏向特异性,NAD+的临床使用受到限制.
研究的目的:
- 开发一个针对衰老细胞和细胞内NAD+循环的策略.
- 使用一种新型的传递系统来减轻与衰老相关的表型.
- 在老化模型中验证开发系统的治疗潜力.
主要方法:
- 在细胞膜涂层 (Cu-NAD@CM) 中封装的铜-尼古丁胺二核化合物的开发.
- 通过Cu-NAD@CM系统对老化的细胞进行向和识别.
- 评估系统恢复NADH/NAD+循环和抑制SASP的能力.
- 在动脉样硬化,多克索鲁比诱导和d-银诱导老化小鼠模型中的体内验证.
主要成果:
- -NAD@CM系统成功地准并识别老化的细胞.
- 细胞内NAD+水平恢复,使NADH循环正常化.
- 显著抑制了与衰老相关的分泌表现型 (SASP).
- 在多个体内老化和衰老模型中观察到治疗效果.
结论:
- Cu-NAD@CM系统为老化细胞向和NAD+恢复提供了一个有希望的方法.
- 这一策略有效地减轻了与衰老相关的表型和SASP.
- 这些发现突显了Cu-NAD@CM对诸如动脉样硬化等年龄相关疾病的显著治疗潜力.
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