尼古丁胺基核糖酸激活SIRT5脱乙基化
Alyson M Curry1, Stacia Rymarchyk2, Noah B Herrington1
1Department of Medicinal Chemistry, Virginia Commonwealth University, Richmond, VA, USA.
The FEBS journal
|June 8, 2023
概括
研究人员发现尼古丁胺核酸 (NR) 是第一个SIRT5选择性激活剂. 这一发现提高了对SIRT5的理解.
科学领域:
- 生物化学和分子生物学
- 细胞代谢和衰老 细胞代谢和衰老
背景情况:
- 人类的sirtuins (调节细胞活动的酶) 与长寿和与年龄相关的疾病有关.
- 一种线粒体的Sirtuin,SIRT5,对于心脏和神经元的健康至关重要,但其脱乙酶的功能仍在争论中.
- 用小分子准sirtuin活动是治疗与年龄相关疾病的治疗策略.
研究的目的:
- 研究 mitochondrial sirtuin SIRT5.5 的催化活性和调节.
- 确定SIRT5的特定激活剂,以探究其生物功能.
- 探索调节SIRT5活动的治疗潜力.
主要方法:
- 鉴定了一种SIRT5选择性全激活剂,尼古丁胺胺 рибоoside (NR).
- 用基质进行生物化学测试,以评估NR对SIRT5催化效率的影响.
- 分子生物学和结构生物学方法绘制NR结合部位的地图,并探索作用机制.
主要成果:
- 尼古丁胺胺 рибоoside (NR) 被确定为第一个选择性激活SIRT5.5的小分子.
- NR显著增加了SIRT5的催化效率.
- 在SIRT5上测绘了NR的结合部位,提供了结构洞察力.
结论:
- 尼古丁胺核酸 (NR) 作为一种有价值的化学探针,用于研究SIRT5的细胞作用.
- 这一发现有助于开发更强效和选择性的SIRT5激活剂.
- 有针对性的SIRT5激活对治疗代谢和与年龄相关的疾病具有前景.
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