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- W4220778889 abstract "Maca is a protein-enriched edible plant with immunomodulatory activity. However, the role of proteins in the immunomodulatory activity of maca is unclear. In this study, peptide products of maca proteins obtained through in vitro gastrointestinal digestion were isolated and purified, and the immunomodulatory activities of these peptides were assessed in macrophages (RAW 264.7 cells). The results show that the maca protein hydrolysate enhanced the phagocytic capacity and NO, TNF-α, and IL-6 secretion of RAW 264.7 cells. Forty-five peptides from known proteins of maca or the cruciferous family were identified by ultraperformance liquid chromatography-tandem mass spectrometry in the hydrolysate, and the peptide RNPFLP exhibited the strongest immunomodulatory activity. Antibody blocking, siRNA, pathway inhibitors, and western blot assays showed that RNPFLP-activated RAW 264.7 cells through the NF-κB and MAPK signaling pathways mediated by TLR2 and TLR4 receptors. An analysis of the structure-activity relationship showed that the N9-H60 active site in arginine plays an important role in the immunomodulatory activity of RNPFLP. This study provides a new understanding of the immunomodulatory activity of maca." @default.
- W4220778889 created "2022-04-03" @default.
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- W4220778889 date "2022-03-31" @default.
- W4220778889 modified "2023-10-17" @default.
- W4220778889 title "Isolation, Identification, and Immunomodulatory Mechanism of Peptides from <i>Lepidium meyenii</i> (Maca) Protein Hydrolysate" @default.
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- W4220778889 doi "https://doi.org/10.1021/acs.jafc.1c08315" @default.
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