Preparation of astaxanthin-loaded DNA/chitosan nanoparticles for improved cellular uptake and antioxidation capability

•DNA/chitosan nanocarriers were initially used for astaxanthin loading and delivery.•Astaxanthin-loaded nanosystem can efficiently protect cells from oxidative damage.•Encapsulated-astaxanthin can be quickly absorbed via endocytosis by Caco-2 cells. DNA/chitosan co-assemblies were initially used as...

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Bibliographic Details
Published in:Food chemistry 2017-07, Vol.227, p.9-15
Main Authors: Wang, Qian, Zhao, Yingyuan, Guan, Lei, Zhang, Yaping, Dang, Qifeng, Dong, Ping, Li, Jing, Liang, Xingguo
Format: Article
Language:English
Subjects:
Antioxidant
Antioxidants - chemistry
Antioxidants - metabolism
Astaxanthin
Biological Transport
Caco-2 Cells
Cellular uptake
Chitosan
Chitosan - chemistry
DNA
DNA - chemistry
Drug Carriers - chemistry
Endocytosis
Humans
Nanodispersion
Nanoparticle
Nanoparticles - chemistry
Particle Size
Xanthophylls - chemistry
Xanthophylls - metabolism
Xanthophylls - pharmacology
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Summary:•DNA/chitosan nanocarriers were initially used for astaxanthin loading and delivery.•Astaxanthin-loaded nanosystem can efficiently protect cells from oxidative damage.•Encapsulated-astaxanthin can be quickly absorbed via endocytosis by Caco-2 cells. DNA/chitosan co-assemblies were initially used as nanocarriers for efficient astaxanthin encapsulation and delivery. The obtained astaxanthin-loaded DNA/chitosan (ADC) colloidal system was transparent and homogenous, with astaxanthin content up to 65μg/ml. Compared to free astaxanthin, ADC nanoparticles with an astaxanthin concentration as low as 3.35nM still showed a more powerful cytoprotective effect on H2O2-induced oxidative cell damage, and improved cell viability from 49.9% to 61.9%. The ROS scavenging efficiency of ADC nanoparticles was as high as 54.3%, which was 2-fold higher than that of free astaxanthin. Besides this, ADC nanoparticles were easily engulfed by Caco-2 cells in a short time, indicating that the encapsulated astaxanthin could be absorbed through endocytosis by intestinal epithelial cells. The improved antioxidation capability and facilitated cellular uptake enabled the ADC nanoparticles to be good candidates for efficient delivery and absorption of astaxanthin.
ISSN:0308-8146
1873-7072
DOI:10.1016/j.foodchem.2017.01.081