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Jiang C, Meng A, Shi X, Fu Z, Wang Y, Zhou J, Zhang X, Liu C. Preparation of antioxidant peptides from yak skin gelatin and their protective effect on myocardial ischemia reperfusion injury. Food Funct 2024; 15:7961-7973. [PMID: 38982985 DOI: 10.1039/d4fo00458b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/11/2024]
Abstract
We herein report a study on the antioxidant peptides that show potential in alleviating myocardial ischemia reperfusion injury (MI/RI). Yak skin gelatin fraction Ac (YSG-Ac), obtained through ultrafiltration and gel filtration with Sephadex G-15, exhibits a favorable nutrient composition, high foaming capacity and stability, and resistance against gastrointestinal digestion. LC-MS/MS analysis reveals that YSG-Ac contains 26 peptide segments with sequence lengths of 8 to 12 amino acids. Online screening suggests that the antioxidant capacity of YSG-Ac is mainly attributed to the presence of hydrophobic and antioxidant amino acids. In vitro, our results demonstrate the MI/RI protective effects of YSG-Ac by effectively repairing H2O2-induced oxidative damage in H9c2 cells, which is achieved by inhibiting malondialdehyde (MDA) levels, and increasing glutathione peroxidase (GSH-pX) and superoxide dismutase (SOD) activity. In vivo, our results further confirm the effectiveness of YSG-Ac in narrowing the area of myocardial infarction, decreasing MDA levels, increasing SOD activity, and reducing the content of lactate dehydrogenase (LDH) in a mouse MI/RI model. Molecular docking analysis indicates that PGADGQPGAK with xanthine dehydrogenase (XDH) and GAAGPTGPIGS with tumor necrosis factor-alpha (TNF-α) exhibit strong bonding capability, and other related targets also show certain binding ability toward YSG-Ac. This suggests that YSG-Ac can regulate MI/RI through multiple targets and pathways. Overall, our findings highlight the potential of YSG-Ac as a functional food ingredient with antioxidant and MI/RI protective characteristics.
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Affiliation(s)
- Chongning Jiang
- School of Pharmacy, North China University of Science and Technology, 21 Bohai Avenue, Caofeidian New Town, Tangshan, 063210 Hebei Province, China.
| | - Aiguo Meng
- Affiliated Hospital, North China University of Science and Technology, 21 Bohai Avenue, Caofeidian New Town, Tangshan, 063210 Hebei Province, China
| | - Xiaoyu Shi
- School of Pharmacy, North China University of Science and Technology, 21 Bohai Avenue, Caofeidian New Town, Tangshan, 063210 Hebei Province, China.
| | - Zhiping Fu
- School of Pharmacy, North China University of Science and Technology, 21 Bohai Avenue, Caofeidian New Town, Tangshan, 063210 Hebei Province, China.
| | - Yali Wang
- School of Pharmacy, North China University of Science and Technology, 21 Bohai Avenue, Caofeidian New Town, Tangshan, 063210 Hebei Province, China.
| | - Jingjing Zhou
- School of Pharmacy, North China University of Science and Technology, 21 Bohai Avenue, Caofeidian New Town, Tangshan, 063210 Hebei Province, China.
| | - Xiaowei Zhang
- Hebei General Hospital, No. 348 Heping West Road, Xinhua District, Shijiazhuang City, 050000, Hebei Province, China
| | - Chunyan Liu
- School of Pharmacy, North China University of Science and Technology, 21 Bohai Avenue, Caofeidian New Town, Tangshan, 063210 Hebei Province, China.
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Wang Y, Chen S, Shi W, Liu S, Chen X, Pan N, Wang X, Su Y, Liu Z. Targeted Affinity Purification and Mechanism of Action of Angiotensin-Converting Enzyme (ACE) Inhibitory Peptides from Sea Cucumber Gonads. Mar Drugs 2024; 22:90. [PMID: 38393061 PMCID: PMC10890666 DOI: 10.3390/md22020090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 02/14/2024] [Accepted: 02/15/2024] [Indexed: 02/25/2024] Open
Abstract
Protein hydrolysates from sea cucumber (Apostichopus japonicus) gonads are rich in active materials with remarkable angiotensin-converting enzyme (ACE) inhibitory activity. Alcalase was used to hydrolyze sea cucumber gonads, and the hydrolysate was separated by the ultrafiltration membrane to produce a low-molecular-weight peptide component (less than 3 kDa) with good ACE inhibitory activity. The peptide component (less than 3 kDa) was isolated and purified using a combination method of ACE gel affinity chromatography and reverse high-performance liquid chromatography. The purified fractions were identified by liquid chromatography-tandem mass spectrometry (LC-MS/MS), and the resulting products were filtered using structure-based virtual screening (SBVS) to obtain 20 peptides. Of those, three noncompetitive inhibitory peptides (DDQIHIF with an IC50 value of 333.5 μmol·L-1, HDWWKER with an IC50 value of 583.6 μmol·L-1, and THDWWKER with an IC50 value of 1291.8 μmol·L-1) were further investigated based on their favorable pharmacochemical properties and ACE inhibitory activity. Molecular docking studies indicated that the three peptides were entirely enclosed within the ACE protein cavity, improving the overall stability of the complex through interaction forces with the ACE active site. The total free binding energies (ΔGtotal) for DDQIHIF, HDWWKER, and THDWWKER were -21.9 Kcal·mol-1, -71.6 Kcal·mol-1, and -69.1 Kcal·mol-1, respectively. Furthermore, a short-term assay of antihypertensive activity in spontaneously hypertensive rats (SHRs) revealed that HDWWKER could significantly decrease the systolic blood pressure (SBP) of SHRs after intravenous administration. The results showed that based on the better antihypertensive activity of the peptide in SHRs, the feasibility of targeted affinity purification and computer-aided drug discovery (CADD) for the efficient screening and preparation of ACE inhibitory peptide was verified, which provided a new idea of modern drug development method for clinical use.
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Affiliation(s)
- Yangduo Wang
- College of Food Sciences and Technology, Shanghai Ocean University, Shanghai 202206, China; (Y.W.); (W.S.)
- Key Laboratory of Cultivation and High-Value Utilization of Marine Organisms, Fisheries Research Institute of Fujian, Xiamen 361013, China; (S.L.); (X.C.); (N.P.); (X.W.)
| | - Shicheng Chen
- Medical Laboratory Sciences Program, College of Health and Human Sciences, Northern Illinois University, DeKalb, IL 60015, USA;
| | - Wenzheng Shi
- College of Food Sciences and Technology, Shanghai Ocean University, Shanghai 202206, China; (Y.W.); (W.S.)
| | - Shuji Liu
- Key Laboratory of Cultivation and High-Value Utilization of Marine Organisms, Fisheries Research Institute of Fujian, Xiamen 361013, China; (S.L.); (X.C.); (N.P.); (X.W.)
| | - Xiaoting Chen
- Key Laboratory of Cultivation and High-Value Utilization of Marine Organisms, Fisheries Research Institute of Fujian, Xiamen 361013, China; (S.L.); (X.C.); (N.P.); (X.W.)
| | - Nan Pan
- Key Laboratory of Cultivation and High-Value Utilization of Marine Organisms, Fisheries Research Institute of Fujian, Xiamen 361013, China; (S.L.); (X.C.); (N.P.); (X.W.)
| | - Xiaoyan Wang
- Key Laboratory of Cultivation and High-Value Utilization of Marine Organisms, Fisheries Research Institute of Fujian, Xiamen 361013, China; (S.L.); (X.C.); (N.P.); (X.W.)
| | - Yongchang Su
- Key Laboratory of Cultivation and High-Value Utilization of Marine Organisms, Fisheries Research Institute of Fujian, Xiamen 361013, China; (S.L.); (X.C.); (N.P.); (X.W.)
| | - Zhiyu Liu
- Key Laboratory of Cultivation and High-Value Utilization of Marine Organisms, Fisheries Research Institute of Fujian, Xiamen 361013, China; (S.L.); (X.C.); (N.P.); (X.W.)
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