阿斯巴拉金酶和自抑制剂通过协同限制阿斯巴拉金供应有效地去除衰老细胞
Zhihua Huang1, Xinxin Liu2, Xiaojia Zhou1
1Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Peking University, Beijing, China.
Aging cell
|September 4, 2025
概括
用一种新型组合疗法向衰老细胞 (SNCs) 会耗尽它们的阿斯巴拉金 (Asn) 供应,选择性地消除它们并改善老年小鼠的健康.
科学领域:
- 细胞衰老
- 代谢途径
- 老龄化研究
背景情况:
- 衰老细胞的积累导致与年龄相关的组织功能障碍和疾病.
- 现有的老化策略在选择性和有效性方面面临挑战.
- 衰老细胞表现出独特的代谢依赖性.
研究的目的:
- 识别和利用SNC中的代谢漏洞以进行有针对性的消除.
- 开发一种结合L-阿斯巴拉金酶和自抑制的新型老化策略.
- 评估这种双重方法在老化的生物体中的治疗潜力.
主要方法:
- 对SNCs的代谢变化的表征,重点是阿斯巴拉金合成酶 (ASNS).
- 对合成致死性诱导的联合L-阿斯巴拉金酶 (ASNase) 和自抑制剂的体外评估.
- 在老年小鼠中对组合治疗的体内评估,评估神经神经元负担,生理功能和与年龄相关的疾病进展.
主要成果:
- 衰老细胞表现出特定的ASNS下调,产生对外源性素 (Asn) 的依赖.
- 通过针对细胞外和细胞内来源,联合ASNase和自抑制协同耗尽了Asn,在体外诱导了选择性的合成致死性.
- 在老年小鼠中,治疗显著降低了神经神经元负担,改善了身体功能,改善了骨质疏松症,动脉样硬化和NAFLD.
结论:
- 针对细胞外和细胞内黄素的供应是一种强效和选择性的老化策略.
- 这种双重作用的方法为各种与年龄相关的疾病提供了广泛的治疗潜力.
- 已发现的代谢脆弱性为开发有效的抗衰老干预提供了新的途径.
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