| Autor: |
Xiaojie Peng, Li Ma, Yuan Cheng, Guoyi Wu, Shanshan Xiao, Xingxing Zeng, Shaohui Zhang, Jiehui Zhou |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
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| Zdroj: |
Journal of Functional Foods, Vol 122, Iss , Pp 106503- (2024) |
| Druh dokumentu: |
article |
| ISSN: |
1756-4646 |
| DOI: |
10.1016/j.jff.2024.106503 |
| Popis: |
Peptides derived from fermented milk have demonstrated diverse bioactivities. In this study, we investigated the protective effects of Gln-Glu-Pro-Val (QEPV) against hydrogen peroxide (H2O2) induced oxidative stress in RAW 264.7 cells and further evaluated its potential in Drosophila melanogaster (D. melanogaster). Pre-incubation with QEPV in vitro dose-dependently promoted cell viability, suppressed oxidative damage, and increased antioxidant enzyme activities in a low-level oxidative stress model. QEPV remarkably extended lifespan under the low-level oxidative stress, validating its practical applicability. These effects were attributed to the upregulation of 5′ adenosine monophosphate-activated protein kinase (AMPK) and peroxisome proliferator-activated receptor alpha (PPARα) signaling pathways, as revealed by label-free proteomic analysis. To confirm the roles of these two signaling pathways, antagonists of AMPK (Dorsomorphin) and PPARα (GW6471) were applied in vitro and in vivo. The protective effects of QEPV were reversed by both antagonists. Overall, QEPV exhibits protective properties by selectively upregulating the AMPK and PPARα signaling pathways, indicating its potential application as an antioxidant food ingredient. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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