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Abstract
Nicotinamide mononucleotide (NMN) has been recognized as a promising bio-active compound in relieving aging-related mitochondrial dysfunction. Self-assembled nanoparticles were prepared based on interaction between ovalbumin (OVA) and fucoidan to improve the stability and bio-accessibility of NMN. The OVA-fucoidan nanoparticles (OFNPs) displayed outstanding thermal stability and entrapment ability of NMN. The reactive oxygen species (ROS) analysis and senescence-associated β-galactosidase (SA-β-gal) staining characterization indicated that NMN encapsulated by OFNPs could effectively alleviate the cellular senescence of d-galactose-induced senescent cells. In vivo Caenorhabitis elegans experiment demonstrated that NMN-loaded OFNPs caused less accumulation of lipofuscin and protected NMN from thermal damage. Compared with free NMN, the NMN-loaded OFNPs prolonged lifespan from 28 to 31 days, increased 26% reproductive ability, and improved 12% body length of Caenorhabitis elegans. The results indicated that the use of nanocarriers could be a good strategy to improve anti-oxidative stress and anti-aging ability of NMN.
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