Issue 25, 2018, Issue in Progress

In silico analysis and in vivo tests of the tuna dark muscle hydrolysate anti-oxidation effect

Abstract

Hydrolysate is a mixture of various peptides with specific functions. However, functional identification of hydrolysate with high throughput is still a difficult task. Furthermore, using in vivo tests via animal or cell experiments is time and labor-intensive. In this study, the peptides component of hydrolysate derived from the tuna dark muscle was measured via MALDI-TOF/TOF-MS, and the functions of the KEFT (Lys-Glu-Phe-Thr), EEASA (Glu-Glu-Ala-Ser-Ala) and RYDD (Arg-Tyr-Asp-Asp) peptides, which were found with the highest proportion, were predicted via Discovery Studio 2016 software. All three peptides were predicted to bind to the Keap1 protein with the highest fit-value and to affect the activity of Keap1, which is involved in anti-oxidation pathways. Subsequently, mice experiments showed that administration of tuna dark muscle hydrolysate increased the levels of superoxide dismutase and glutathione peroxidase in the serum and liver (P < 0.05) and decreased the malondialdehyde level (P < 0.05) as well as transcription of Keap1 (P > 0.05), which are consistent with the in silico analysis results using Discovery Studio 2016 software. The combination of in silico analysis and in vivo tests provided an alternative strategy for identifying hydrolysate function and provided insight into high-value utilization of protein hydrolysate.

Graphical abstract: In silico analysis and in vivo tests of the tuna dark muscle hydrolysate anti-oxidation effect

Supplementary files

Article information

Article type
Paper
Submitted
29 Jan 2018
Accepted
06 Apr 2018
First published
17 Apr 2018
This article is Open Access
Creative Commons BY license

RSC Adv., 2018,8, 14109-14119

In silico analysis and in vivo tests of the tuna dark muscle hydrolysate anti-oxidation effect

J. Han, S. Tang, Y. Li, W. Bao, H. Wan, C. Lu, J. Zhou, Y. Li, L. Cheong and X. Su, RSC Adv., 2018, 8, 14109 DOI: 10.1039/C8RA00889B

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