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Bioactive NAD+ Regeneration Promoted by Multimetallic Nanoparticles Based on Graphene–Polymer Nanolayers
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2022-08-22 , DOI: 10.1021/acsami.2c12971
Xiangming Li 1 , Qi An 2 , Zequn Ma 3 , Yi Zhang 3 , Xingyuan Chen 4 , Yu Chai 5 , Meng Fu 1
Affiliation  

The concentration of nicotinamide adenine dinucleotide oxidized form (NAD+) changes during aging, and the production of NAD+ can significantly affect both health span and life span. However, it is still of great challenge to regenerate NAD+ from its precursors. Herein, we introduce a method to prepare multimetallic nanoparticles (including Au, Pt, Cu, and MgO) that can efficiently promote the conversion of NADH to NAD+. The nanoparticles are made by mixing reduced graphene oxide–polyethyleneimine–polyacrylic acid nano-films with metallic salts, where four different metal ions are reduced and grow at the surface of the nanolayers. The morphology, size, and growth rate of nanoparticles can be controlled by adding surfactants, applying an electric field, and so forth. Our multimetallic nanoparticles exhibit excellent catalytic performance that a complete conversion of NADH to NAD+ can be finished in 3 min without introducing additional oxygen. This work presents a way for the preparation of multimetallic nanoparticles to promote NAD+ regeneration, which shows great promise for the future design of high-performance materials for antiaging.

中文翻译:

基于石墨烯-聚合物纳米层的多金属纳米粒子促进生物活性 NAD+ 再生

烟酰胺腺嘌呤二核苷酸氧化形式 (NAD + ) 的浓度在衰老过程中会发生变化,NAD +的产生会显着影响健康寿命和寿命。然而,从其前体中再生NAD +仍然是一个巨大的挑战。在此,我们介绍了一种制备多金属纳米粒子(包括 Au、Pt、Cu 和 MgO)的方法,该方法可以有效促进 NADH 向 NAD +的转化。. 纳米粒子是通过将还原的氧化石墨烯-聚乙烯亚胺-聚丙烯酸纳米膜与金属盐混合制成的,其中四种不同的金属离子被还原并在纳米层表面生长。纳米粒子的形态、尺寸和生长速率可以通过添加表面活性剂、施加电场等来控制。我们的多金属纳米粒子表现出优异的催化性能,可以在 3 分钟内完成 NADH 到 NAD +的完全转化,而无需引入额外的氧气。这项工作提出了一种制备多金属纳米粒子以促进 NAD +再生的方法,这为未来高性能抗老化材料的设计提供了广阔的前景。
更新日期:2022-08-22
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