1. Proteome-based identification of chicken egg yolk proteins associated with antioxidant activity on the Qinghai-Tibetan Plateau.
- Author
-
Liu Y, Sheng L, Ma M, and Jin Y
- Subjects
- Animals, Caco-2 Cells, Chickens, Humans, Antioxidants chemistry, Antioxidants pharmacology, Avian Proteins chemistry, Avian Proteins pharmacology, Egg Proteins chemistry, Egg Proteins pharmacology, Glutathione Peroxidase chemistry, Glutathione Peroxidase pharmacology, Proteomics
- Abstract
In this study, a proteome analysis of Tibetan chicken egg yolk as well as the comparison to that of lowland chicken were performed by label-free quantitative proteomics. A total of 135 proteins were identified and abundances of 19 of these proteins were significantly different between these two groups. These differential proteins were mainly associated with oxidative stress, defense, energy metabolism and tissue development through bioinformatics analysis. To further verify the species-specific diversity of the antioxidant capacity, the antioxidative activities of egg yolk proteins were further invested in vitro and in Caco-2 cells. It was observed that both Tibetan and lowland chicken egg yolk proteins showed antioxidant activities, but the former exerted a much stronger effect. PIT54 and glutathione peroxidase 3 were considered to be antioxidant-related candidate proteins. These results provide substantial evidence for the molecular mechanisms of enhancing physical activity levels of egg yolk proteins, especially with regard to the cross-species protective mechanisms against oxidative stress., Competing Interests: Declaration of Competing Interest The authors declare that ‘NO Conflict of interest’ exist in this research article., (Copyright © 2019 Elsevier B.V. All rights reserved.)
- Published
- 2020
- Full Text
- View/download PDF