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Liu C, Wang J, Hong D, Chen Z, Li S, Ma A, Jia Y. Preparation, Isolation and Antioxidant Function of Peptides from a New Resource of Rumexpatientia L. × Rumextianshanicus A. Los. Foods 2024; 13:981. [PMID: 38611286 PMCID: PMC11011613 DOI: 10.3390/foods13070981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Revised: 03/17/2024] [Accepted: 03/21/2024] [Indexed: 04/14/2024] Open
Abstract
Rumexpatientia L. ×Rumextianshanicus A. Los (RRL), known as "protein grass" in China, was recognized as a new food ingredient in 2021. However, the cultivation and product development of RRL are still at an early stage, and no peptide research has been reported. In this study, two novel antioxidant peptides, LKPPF and LPFRP, were purified and identified from RRL and applied to H2O2-induced HepG2 cells to investigate their antioxidant properties. It was shown that 121 peptides were identified by ultrafiltration, gel filtration chromatography, and LC-MS/MS, while computer simulation and molecular docking indicated that LKPPF and LPFRP may have strong antioxidant properties. Both peptides were not cytotoxic to HepG2 cells at low concentrations and promoted cell growth, which effectively reduced the production of intracellular ROS and MDA, and increased cell viability and the enzymatic activities of SOD, GSH-Px, and CAT. Therefore, LKPPF and LPFRP, two peptides, possess strong antioxidant activity, which provides a theoretical basis for their potential as food additives or functional food supplements, but still need to be further investigated through animal models as well as cellular pathways.
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Affiliation(s)
| | | | | | | | | | | | - Yingmin Jia
- School of Food and Health, Beijing Technology and Business University, Beijing 100048, China; (C.L.); (J.W.); (D.H.); (Z.C.); (S.L.); (A.M.)
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2
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Liang R, Xu L, Fan C, Cao L, Guo X. Structural Characteristics and Antioxidant Mechanism of Donkey-Hide Gelatin Peptides by Molecular Dynamics Simulation. Molecules 2023; 28:7975. [PMID: 38138465 PMCID: PMC10745372 DOI: 10.3390/molecules28247975] [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: 10/20/2023] [Revised: 11/30/2023] [Accepted: 12/01/2023] [Indexed: 12/24/2023] Open
Abstract
This study aimed to explore the structural characteristics and antioxidant mechanism of donkey-hide gelatin peptides. After hydrolysis and ultrafiltration treatment, five gelatin peptides with different molecular weights (MWs) were obtained. Amino acid analysis showed that gelatin peptides with different MWs contained a large number of amino acids, including G, P, E, N, A, and R, and differences were noted in the content of various amino acids. Fourier transform infrared spectroscopy and circular dichroism revealed that these gelatin peptides differed in terms of the peak strength of functional groups and number of secondary structures. Moreover, 26 pentapeptides/hexapeptides were identified. Among them, we investigated by molecular docking how PGPAP, which has the best antioxidant activity, may interact with the Keap1 protein. The results showed that the PGPAP-Keap1 complex had a stable conformation, and Arg415, Gly462, Phe478, and Tyr572 were the key residues involved in the binding of the peptide PGPAP to Keap1. Our results demonstrated that PGPAP could serve as a bioactive peptide with antioxidant activity.
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Affiliation(s)
| | | | | | | | - Xingfeng Guo
- Agricultural Science and Engineering School, Liaocheng University, Liaocheng 252059, China; (R.L.); (L.X.); (C.F.); (L.C.)
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3
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Hu Y, Ni C, Wang Y, Yu X, Wu H, Tu J, Li C, Xiao Z, Wen L. Research Progress on the Preparation and Function of Antioxidant Peptides from Walnuts. Int J Mol Sci 2023; 24:14853. [PMID: 37834300 PMCID: PMC10573205 DOI: 10.3390/ijms241914853] [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: 08/28/2023] [Revised: 09/28/2023] [Accepted: 10/01/2023] [Indexed: 10/15/2023] Open
Abstract
Food-derived peptides have good antioxidant activity and are highly safe for humans; consequently, there has been continuous growth in research on antioxidants, with potential applications in food, medicine, cosmetics, and other fields. Among food-derived peptides, walnut-derived peptides have attracted increasing attention as food-derived peptides rich in eight essential amino acids. This review summarizes the progress made in the development and identification of antioxidant peptides in walnut proteins. This article mainly describes the interaction between reactive oxygen species and cellular antioxidant products, modulation of enzyme content and activity, and regulation of the redox signaling pathways and analyzes the mechanisms of reduction in oxidative stress. Finally, the complex structure-activity relationships of walnut-derived peptides are analyzed based on their amino acid composition and secondary structure of the polypeptides. This review provides a theoretical basis for the production of walnut-derived antioxidant peptides and could help promote the development of the walnut industry.
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Affiliation(s)
- Yuxi Hu
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha 410114, China (H.W.)
| | - Ce Ni
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha 410114, China (H.W.)
| | - Yingying Wang
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha 410114, China (H.W.)
| | - Xun Yu
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha 410114, China (H.W.)
| | - Hao Wu
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha 410114, China (H.W.)
| | - Jia Tu
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, China
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, China
| | - Changzhu Li
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, China
| | - Zhihong Xiao
- State Key Laboratory of Utilization of Woody Oil Resource, Hunan Academy of Forestry, Changsha 410004, China
| | - Li Wen
- School of Food Science and Bioengineering, Changsha University of Science & Technology, Changsha 410114, China (H.W.)
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4
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Xu Z, Hu Q, Xie M, Liu J, Su A, Xu H, Yang W. Protective effects of peptide KSPLY derived from Hericium erinaceus on H2O2-induced oxidative damage in HepG2 cells. FOOD SCIENCE AND HUMAN WELLNESS 2023. [DOI: 10.1016/j.fshw.2023.02.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/28/2023]
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5
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Protective Effect of Peptides from Pinctada Martensii Meat on the H 2O 2-Induced Oxidative Injured HepG2 Cells. Antioxidants (Basel) 2023; 12:antiox12020535. [PMID: 36830093 PMCID: PMC9952140 DOI: 10.3390/antiox12020535] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 02/16/2023] [Accepted: 02/16/2023] [Indexed: 02/23/2023] Open
Abstract
Pinctada martensii is a major marine pearl cultured species in southern China, and its meat is rich in protein, which is an excellent material for the preparation of bioactive peptides. In this study, the peptides from Pinctada martensii meat were prepared by simulated gastrointestinal hydrolysis, and after multistep purification, the structures of the peptides were identified, followed by the solid-phase synthesis of the potential antioxidant peptides. Finally, the antioxidant activities of the peptides were verified using HepG2 cells, whose oxidative stress was induced by hydrogen peroxide (H2O2). It was shown that the antioxidant peptide (S4) obtained from Pinctada martensii meat could significantly increase the cell viability of HepG2 cells. S4 could also scavenge reactive oxygen species (ROS) and reduce the lactate dehydrogenase (LDH) level. In addition, it could enhance the production of glutathione (GSH) and catalase (CAT) in HepG2 cells, as well as the expression of key genes in the Nrf2 signaling pathway. Three novel antioxidant peptides, arginine-leucine (RL), arginine-glycine-leucine (RGL), and proline-arginine (PR), were also identified. In conclusion, peptides from Pinctada martensii meat and three synthetic peptides (RGL, RL, PR) showed antioxidant activity and could have the potential to be used as antioxidant candidates in functional foods.
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6
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Protective effects of edible insect protein extracts from Protaetia brevitarsis against H2O2-induced oxidative stress in mouse C2C12 myoblast cells. FOOD BIOSCI 2023. [DOI: 10.1016/j.fbio.2023.102396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Tao L, Gu F, Liu Y, Yang M, Wu XZ, Sheng J, Tian Y. Preparation of antioxidant peptides from Moringa oleifera leaves and their protection against oxidative damage in HepG2 cells. Front Nutr 2022; 9:1062671. [PMID: 36532523 PMCID: PMC9751868 DOI: 10.3389/fnut.2022.1062671] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2022] [Accepted: 11/14/2022] [Indexed: 10/20/2023] Open
Abstract
Moringa oleifera leaves are a kind of new food raw materials, rich in functional factors, M. oleifera leaves aqueous extract have antioxidant activity and M. oleifera leave protein is an important active ingredient in the aqueous extract. Numerous studies have shown that peptides have strong antioxidant activity. To reveal the antioxidant effects of M. oleifera (MO) leaves peptides, MO leave antioxidant peptides were isolated and prepared to clarify their antioxidant activity. MLPH1 (<1 kDa), MLPH3 (1~3 kDa), MLPH5 (3~5 kDa), and MLPH10 (5~10 kDa) fractions were obtained by the membrane ultrafiltration classification of MO leaves proteolytic hydrolysate (MLPH). MLPH1 was further separated by centrifugal filters, and the fraction separated by <1 kDa (MLPH1-1) was identified and analyzed by LC-MS/MS. The purpose of this study was to investigate the effect of MO leaves antioxidant peptide pretreatment on H2O2-treated HepG2 cells and to refine the antioxidant activity. The results showed that MLPH1 had the strongest antioxidant activity, and three MO leaves antioxidant peptides (LALPVYN, LHIAALVFQ, and FHEEDDAKLF) were obtained. The peptide with the sequence LALPVYN and a molecular weight of 788.44 Da had the strongest antioxidant activity. After 24 h of LALPVYN pretreatment, the cell viability and the CAT, GSH-Px, and SOD enzyme activity were significantly increased, and the MDA, ROS, and apoptosis rates were significantly decreased. These results provide a theoretical basis for further research on the antioxidant mechanism of MO leaves peptides.
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Affiliation(s)
- Liang Tao
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, China
- National Research and Development Professional Center for Moringa Processing Technology, Yunnan Agricultural University, Kunming, China
- Engineering Research Center of Development and Utilization of Food and Drug Homologous Resources, Ministry of Education, Yunnan Agricultural University, Kunming, China
| | - Fan Gu
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, China
- National Research and Development Professional Center for Moringa Processing Technology, Yunnan Agricultural University, Kunming, China
| | - Yan Liu
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, China
- National Research and Development Professional Center for Moringa Processing Technology, Yunnan Agricultural University, Kunming, China
| | - Min Yang
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, China
- National Research and Development Professional Center for Moringa Processing Technology, Yunnan Agricultural University, Kunming, China
| | - Xing-Zhong Wu
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, China
| | - Jun Sheng
- Yunnan Provincial Engineering Research Center for Edible and Medicinal Homologous Functional Food, Yunnan Agricultural University, Kunming, China
| | - Yang Tian
- College of Food Science and Technology, Yunnan Agricultural University, Kunming, China
- National Research and Development Professional Center for Moringa Processing Technology, Yunnan Agricultural University, Kunming, China
- Engineering Research Center of Development and Utilization of Food and Drug Homologous Resources, Ministry of Education, Yunnan Agricultural University, Kunming, China
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8
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Guo J, Lu A, Sun Y, Liu B, Zhang J, Zhang L, Huang P, Yang A, Li Z, Cao Y, Miao J. Purification and identification of antioxidant and angiotensin converting enzyme-inhibitory peptides from Guangdong glutinous rice wine. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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9
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Rodríguez-Arana N, Jiménez-Aliaga K, Intiquilla A, León JA, Flores E, Zavaleta AI, Izaguirre V, Solis-Calero C, Hernández-Ledesma B. Protection against Oxidative Stress and Metabolic Alterations by Synthetic Peptides Derived from Erythrina edulis Seed Protein. Antioxidants (Basel) 2022; 11:2101. [PMID: 36358473 PMCID: PMC9686657 DOI: 10.3390/antiox11112101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 10/14/2022] [Accepted: 10/20/2022] [Indexed: 06/21/2024] Open
Abstract
The ability of multifunctional food-derived peptides to act on different body targets make them promising alternatives in the prevention/management of chronic disorders. The potential of Erythrina edulis (pajuro) protein as a source of multifunctional peptides was proven. Fourteen selected synthetic peptides identified in an alcalase hydrolyzate from pajuro protein showed in vitro antioxidant, anti-hypertensive, anti-diabetic, and/or anti-obesity effects. The radical scavenging properties of the peptides could be responsible for the potent protective effects observed against the oxidative damage caused by FeSO4 in neuroblastoma cells. Moreover, their affinity towards the binding cavity of angiotensin-converting enzyme (ACE) and dipeptidyl peptidase IV (DPP-IV) were predicted by molecular modeling. The results demonstrated that some peptides such as YPSY exhibited promising binding at both enzymes, supporting the role of pajuro protein as a novel ingredient of functional foods or nutraceuticals for prevention/management of oxidative stress, hypertension, and metabolic-alteration-associated chronic diseases.
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Affiliation(s)
- Nathaly Rodríguez-Arana
- Laboratorio de Biología Molecular, Grupo de Investigación BIOMIAS, Facultad de Farmacia y Bioquímica, Universidad Nacional Mayor de San Marcos, Jr. Puno N° 1002, Lima 4559, Peru
| | - Karim Jiménez-Aliaga
- Laboratorio de Biología Molecular, Grupo de Investigación BIOMIAS, Facultad de Farmacia y Bioquímica, Universidad Nacional Mayor de San Marcos, Jr. Puno N° 1002, Lima 4559, Peru
| | - Arturo Intiquilla
- Laboratorio de Biología Molecular, Grupo de Investigación BIOMIAS, Facultad de Farmacia y Bioquímica, Universidad Nacional Mayor de San Marcos, Jr. Puno N° 1002, Lima 4559, Peru
- Departamento de Ciencia de los Alimentos y Tecnología Química, Facultad de Ciencias Químicas y Farmacéuticas, Universidad de Chile, Santos Dumont 964, Independencia, Santiago 8380494, Chile
| | - José A. León
- Laboratorio de Biología Molecular, Grupo de Investigación BIOMIAS, Facultad de Farmacia y Bioquímica, Universidad Nacional Mayor de San Marcos, Jr. Puno N° 1002, Lima 4559, Peru
| | - Eduardo Flores
- Laboratorio de Biología Molecular, Grupo de Investigación BIOMIAS, Facultad de Farmacia y Bioquímica, Universidad Nacional Mayor de San Marcos, Jr. Puno N° 1002, Lima 4559, Peru
| | - Amparo Iris Zavaleta
- Laboratorio de Biología Molecular, Grupo de Investigación BIOMIAS, Facultad de Farmacia y Bioquímica, Universidad Nacional Mayor de San Marcos, Jr. Puno N° 1002, Lima 4559, Peru
| | - Víctor Izaguirre
- Laboratorio de Biología Molecular, Grupo de Investigación BIOMIAS, Facultad de Farmacia y Bioquímica, Universidad Nacional Mayor de San Marcos, Jr. Puno N° 1002, Lima 4559, Peru
| | - Christian Solis-Calero
- Laboratorio de Biología Molecular, Grupo de Investigación BIOMIAS, Facultad de Farmacia y Bioquímica, Universidad Nacional Mayor de San Marcos, Jr. Puno N° 1002, Lima 4559, Peru
| | - Blanca Hernández-Ledesma
- Department of Bioactivity and Food Analysis, Institute of Food Science Research (CIAL, CSIC-UAM, CEI UAM+CSIC), Nicolás Cabrera 9, 28049 Madrid, Spain
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Dávila-Ortiz G, Castañeda-Reyes ED, Juárez-Palomo CI, Perea-Flores MDJ, Pérez-Pastén-Borja R, Márquez-Flores YK, González de Mejía E. Liposomes Containing Amaranth Unsaponifiable Matter and Soybean Lunasin Suppress ROS Production in Fibroblasts and Reduced Interleukin Production in Macrophages. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2022; 19:11678. [PMID: 36141952 PMCID: PMC9517488 DOI: 10.3390/ijerph191811678] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 09/10/2022] [Accepted: 09/13/2022] [Indexed: 06/16/2023]
Abstract
Inflammation is a normal response in defense to agents that may cause damage to the human body. When inflammation becomes chronic, reactive oxygen species (ROS) are produced; which could lead to diseases such as cancer. The aim was to assess liposomes' antioxidant and anti-inflammatory capacity loaded with amaranth unsaponifiable matter and soybean lunasin (UM + LunLip) in an in vitro model using fibroblasts and macrophages. To evaluate ROS production, fibroblasts CHON-002 ABAP were added to promote ROS production; and the cells were treated with UM + LunLip. For inflammation markers production, lipopolysaccharides (LPS)-stimulated RAW 264.7 and peritoneal macrophages were treated with empty liposomes (EmLip), liposomes loaded with unsaponifiable matter (UMLip), liposomes loaded with lunasin (LunLip), and UM + LunLip. ROS production was significantly decreased by 77% (p < 0.05) when fibroblasts were treated with UM + LunLip at 2 mg lunasin/mL compared with the control treated with ABAP. Treatment with UMLip was the most effective in reducing tumor necrosis factor-α (71-90%) and interleukin-6 (43-55%, p < 0.001). Both liposomes containing unsaponifiable matter (UMLip and UM + LunLip) were more effective than EmLip or LunLip. In conclusion, amaranth unsaponifiable matter-loaded liposomes are effective in decreasing pro-inflammatory cytokine production.
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Affiliation(s)
- Gloria Dávila-Ortiz
- Unidad Profesional Adolfo López Mateos, Departamento de Ingeniería Bioquímica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Campus Zacatenco, Madero, Ciudad de México 07738, Mexico
| | - Erick Damian Castañeda-Reyes
- Unidad Profesional Adolfo López Mateos, Departamento de Ingeniería Bioquímica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Campus Zacatenco, Madero, Ciudad de México 07738, Mexico
- Department of Food Science and Human Nutrition, University of Illinois, Urbana-Champaign, IL 61801, USA
| | - Carlos Ignacio Juárez-Palomo
- Unidad Profesional Adolfo López Mateos, Departamento de Ingeniería Bioquímica, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Campus Zacatenco, Madero, Ciudad de México 07738, Mexico
| | - María de Jesús Perea-Flores
- Unidad Profesional Adolfo López Mateos, Centro de Nanociencias y Micro y Nanotecnologías, Instituto Politécnico Nacional (IPN), Av. Luis Enrique Erro s/n, Zacatenco, Alcaldía Gustavo A. Madero, Ciudad de México 07738, Mexico
| | - Ricardo Pérez-Pastén-Borja
- Unidad Profesional Adolfo López Mateos, Departamento de Farmacia, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Campus Zacatenco, Madero, Ciudad de México 07738, Mexico
| | - Yazmín Karina Márquez-Flores
- Unidad Profesional Adolfo López Mateos, Departamento de Farmacia, Escuela Nacional de Ciencias Biológicas, Instituto Politécnico Nacional, Campus Zacatenco, Madero, Ciudad de México 07738, Mexico
| | - Elvira González de Mejía
- Department of Food Science and Human Nutrition, University of Illinois, Urbana-Champaign, IL 61801, USA
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Protective effect and mechanism of SeMet-Pro-Ser on K2Cr2O7-induced toxicity in L-02 hepatocytes. J Funct Foods 2022. [DOI: 10.1016/j.jff.2022.105148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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12
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Purification, identification, and antioxidative mechanism of three novel selenium-enriched oyster antioxidant peptides. Food Res Int 2022; 157:111359. [DOI: 10.1016/j.foodres.2022.111359] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 05/01/2022] [Accepted: 05/10/2022] [Indexed: 11/20/2022]
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13
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Sun L, Li M, Zhang S, Bao Z, Lin S. Mechanism of Ser-Ala-Gly-Pro-Ala-Phe treatment with a pulsed electric field to improve ethanol-induced gastric mucosa injury in mice. Food Funct 2022; 13:6716-6725. [PMID: 35662307 DOI: 10.1039/d2fo00567k] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
This paper focused on the mechanism of Ser-Ala-Gly-Pro-Ala-Phe (SAGPAF) treatment to improve gastric mucosal injury in mice. A gastric mucosa injury model induced by ethanol was established, and the superoxide dismutase (SOD) activity, malondialdehyde (MDA) content, nitric oxide (NO) content and myeloperoxidase (MPO) level were determined. We performed macroscopic and histopathological evaluation of the gastric organs. Moreover, we analyzed the mechanism of SAGPAF treatment by western blotting. Compared with the model group, the SOD activity and NO content in the medium-dose and high-dose SAGPAF groups of treated with 10 kV cm-1 field intensity were significantly increased. The MDA content and MPO level were decreased significantly. They significantly reduced the gastric mucosal injury induced by ethanol (21.17 ± 3.51% and 13.99 ± 2.00%) and the histopathological scores (3.83 ± 0.40 and 4.33 ± 0.37) (P < 0.05). Western blotting analysis showed that SAGPAF after pulsed electric field (PEF) treatment improved gastric injury by reducing protein phosphorylation. These findings provided strong evidence that PEF-treated SAGPAF enhanced the gastric mucosal barrier function by inhibiting the activation of the mitogen-activated protein kinase (MAPK) and nuclear factor kappa-B (NF-κB) signaling pathways, reducing the ethanol-induced inflammatory response and oxidative stress.
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Affiliation(s)
- Liangzi Sun
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, P.R. China.
| | - Mengqi Li
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, P.R. China.
| | - Shuyu Zhang
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, P.R. China.
| | - Zhijie Bao
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, P.R. China.
| | - Songyi Lin
- National Engineering Research Center of Seafood, School of Food Science and Technology, Dalian Polytechnic University, Dalian 116034, P.R. China.
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14
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Lin S, Cai X, Chen H, Xu Y, Wu J, Wang S. Development of fish gelatin-chitooligosaccharide conjugates through the Maillard reaction for the encapsulation of curcumin. Curr Res Food Sci 2022; 5:1625-1639. [PMID: 36164327 PMCID: PMC9507993 DOI: 10.1016/j.crfs.2022.09.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/30/2022] [Accepted: 09/16/2022] [Indexed: 11/30/2022] Open
Abstract
The poor water solubility, bioavailability and stability of bioactive compounds have become the bottleneck restricting their wide application, thus developing a functional carrier to realize the efficient encapsulation and activity improvement of active hydrophobic substances has become a research hotspot. In this work, a functional glycosylated fish gelatin (called FG-COS conjugates) carrier based on fish gelatin (FG) and chitooligosaccharide (COS) via Maillard reaction was developed. The functional carrier exhibited good antioxidant activity and high encapsulation of curcumin (Cur). Enhanced antioxidant effect of Cur loaded in FG-COS conjugates (called FG–COS–Cur nanoparticles) was achieved, showing remarkable UV protection on Cur and enhanced intracellular antioxidant activity of FG–COS–Cur nanoparticles. Remarkably, FG–COS–Cur nanoparticles increased the cell viability of H2O2-induced oxidative damage Caco-2 cells, drastically reduced the levels of reactive oxygen species (ROS) and lactate dehydrogenase (LDH), and significantly increased intracellular antioxidant enzyme activities, which all exhibited a dose-response relationship. These findings suggested that the FG-COS conjugates with intrinsic antioxidant activity could effectively encapsulate Cur and improved bioavailability for hydrophobic active molecules in functional food field. Functional carrier (FG-COS conjugates) based on glycosylation FG with COS was developed. FG-COS conjugates exhibited good antioxidant activity and excellent loading capacity of Cur. FG-COS conjugates showed remarkable UV protection on Cur. FG–COS–Cur nanoparticles displayed a positive effect on the antioxidant of Cur. FG–COS–Cur nanoparticles significantly attenuated oxidative stress damage in Caco-2 cell.
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Affiliation(s)
| | | | | | | | - Jiulin Wu
- Corresponding author. College of Biological Science and Engineering, Fuzhou University, Fuzhou, 350108, China.
| | - Shaoyun Wang
- Corresponding author. College of Biological Science and Engineering, Fuzhou University, Fuzhou, 350108, China.
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15
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Liu C, Jia Y, Qiu Y. Ethyl Acetate Fraction of Abelmoschus manihot (L.) Medic Flowers Exerts Inhibitory Effects Against Oxidative Stress in H 2O 2-Induced HepG2 Cells and D-Galactose-Induced Aging Mice. J Med Food 2021; 24:997-1009. [PMID: 34524027 DOI: 10.1089/jmf.2021.k.0053] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
Oxidative stress has been demonstrated to be associated with numerous aging-related diseases. Ethyl acetate fraction of Abelmoschus manihot (L.) Medic (EA) had been reported to possess strong radical-scavenging activity due to its rich content of flavonoids. This work aimed to determine the protective effects of EA against oxidative injuries in vivo and in vitro, as well as to explore the relevant mechanisms behind these effects. Pretreatment with EA significantly elevated cell viability of H2O2-induced HepG2 cells, reduced the reactive oxygen species level, decreased apoptotic cells, and inhibited activities of caspase 3/9. Meanwhile, EA pretreatment elevated the levels of superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px), while reduced malondialdehyde (MDA) generation and lactate dehydrogenase (LDH) release dose-dependently. In addition, EA modulated key marker genes expression of antioxidation and apoptosis-related signaling pathways at the messenger RNA (mRNA) and protein levels. In the animal studies, EA also significantly enhanced the antioxidant activity and reduced MDA generation in serum, liver, and brain of the D-galactose (D-gal)-induced mice. Furthermore, the histological analysis indicated that EA effectively alleviated liver and brain injury of mice induced by D-gal, dose-dependently. EA as a potential antioxidant agent promoted health and reduced the risk of aging-associated diseases.
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Affiliation(s)
- Chang Liu
- College of Food Science and Biology, Hebei University of Science and Technology, Shijiazhuang, China
| | - Yanli Jia
- College of Food Science and Biology, Hebei University of Science and Technology, Shijiazhuang, China
| | - Yan Qiu
- College of Food Science and Biology, Hebei University of Science and Technology, Shijiazhuang, China
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16
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Validation of Steric Configuration Changes Induced by a Pulsed Electric Field Treatment as the Mechanism for the Antioxidant Activity Enhancement of a Peptide. FOOD BIOPROCESS TECH 2021. [DOI: 10.1007/s11947-021-02643-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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17
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Lv JM, Gouda M, Zhu YY, Ye XQ, Chen JC. Ultrasound-Assisted Extraction Optimization of Proanthocyanidins from Kiwi ( Actinidia chinensis) Leaves and Evaluation of Its Antioxidant Activity. Antioxidants (Basel) 2021; 10:antiox10081317. [PMID: 34439565 PMCID: PMC8389255 DOI: 10.3390/antiox10081317] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2021] [Revised: 08/13/2021] [Accepted: 08/18/2021] [Indexed: 12/23/2022] Open
Abstract
Using ultrasound (US) in proanthocyanidin (PA) extraction has become one of the important emerging technologies. It could be the next generation for studying the US mechnophore impact on the bioactive compound’s functionality. The objective of this study was to demonstrate the potential of US treatment on PAs extracted from kiwifruit (Actinidia chinensis) leaves, and to provide a comprehensive chemical composition and bioactivity relationship of the purified kiwifruit leaves PAs (PKLPs). Several methods like single-factor experiments and response surface methodology (RSM) for the four affected factors on US extraction efficiency were constructed. HPLC-QTOF-MS/MS, cytotoxicity analysis, and antioxidant activity were also demonstrated. In the results, the modeling of PA affected factors showed that 40% US-amplitude, 30 mL/g dry weight (DW) solvent to solid ration (S/S), and 70 °C for 15 min were the optimum conditions for the extraction of PAs. Furthermore, PKLPs exhibited significant radical scavenging and cellular antioxidant activity (p < 0.05). In conclusion, this study’s novelty comes from the broad prospects of using US in PKLP green extraction that could play an important role in maximizing this phytochemical functionality in drug discovery and food science fields.
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Affiliation(s)
- Ji-Min Lv
- National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China; (J.-M.L.); (Y.-Y.Z.); (X.-Q.Y.)
| | - Mostafa Gouda
- National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China; (J.-M.L.); (Y.-Y.Z.); (X.-Q.Y.)
- Department of Nutrition & Food Science, National Research Centre, Dokki, Giza 12422, Egypt
- Correspondence: (M.G.); (J.-C.C.)
| | - Yan-Yun Zhu
- National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China; (J.-M.L.); (Y.-Y.Z.); (X.-Q.Y.)
| | - Xing-Qian Ye
- National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China; (J.-M.L.); (Y.-Y.Z.); (X.-Q.Y.)
| | - Jian-Chu Chen
- National-Local Joint Engineering Laboratory of Intelligent Food Technology and Equipment, Zhejiang Key Laboratory for Agro-Food Processing, Zhejiang Engineering Laboratory of Food Technology and Equipment, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China; (J.-M.L.); (Y.-Y.Z.); (X.-Q.Y.)
- Correspondence: (M.G.); (J.-C.C.)
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18
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Gao J, Li T, Chen D, Gu H, Mao X. Identification and molecular docking of antioxidant peptides from hemp seed protein hydrolysates. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2021.111453] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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19
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Bu F, Yi D, Zhang H, Li Q, Pan D, Dang Y. Isolation and identification of antioxidant and DPP-IV inhibitory peptide PYPYEPYEPYPY from yak bone hydrolysate. FOOD SCIENCE AND TECHNOLOGY RESEARCH 2021. [DOI: 10.3136/fstr.27.441] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Fan Bu
- College of Food and Pharmaceutical Sciences, Ningbo University
| | | | | | - Qin Li
- Institute of Materia Medica, Hangzhou Medical College
| | - Daodong Pan
- College of Food and Pharmaceutical Sciences, Ningbo University
| | - Yali Dang
- College of Food and Pharmaceutical Sciences, Ningbo University
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20
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Matos FMD, Castro RJSD. Insetos comestíveis como potenciais fontes de proteínas para obtenção de peptídeos bioativos. BRAZILIAN JOURNAL OF FOOD TECHNOLOGY 2021. [DOI: 10.1590/1981-6723.04420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Resumo O consumo de insetos como uma fonte alternativa de proteínas é considerado uma tendência futura e uma estratégia viável, com potencial notório para garantia do fornecimento de alimentos em nível global. Os insetos são uma fonte não convencional de proteínas, seja para consumo humano direto ou indiretamente, como ingredientes em alimentos formulados. Além disso, estudos científicos têm demonstrado que a hidrólise enzimática destas proteínas resulta na produção de peptídeos com atividades biológicas de grande interesse, como atividade antioxidante, antidiabética, anti-hipertensiva e antimicrobiana. O uso desses peptídeos com fim nutracêutico pode substituir ou reduzir o uso de drogas sintéticas, as quais estão associadas a efeitos colaterais indesejáveis. O presente trabalho teve como objetivo abordar o uso de insetos na alimentação humana, destacando sua aplicação como substrato proteico na hidrólise enzimática para produção de peptídeos bioativos. As principais propriedades bioativas dos peptídeos foram relatadas.
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21
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Wen C, Zhang J, Zhou J, Feng Y, Duan Y, Zhang H, Ma H. Slit divergent ultrasound pretreatment assisted watermelon seed protein enzymolysis and the antioxidant activity of its hydrolysates in vitro and in vivo. Food Chem 2020; 328:127135. [DOI: 10.1016/j.foodchem.2020.127135] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 05/22/2020] [Accepted: 05/22/2020] [Indexed: 12/11/2022]
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22
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Tadesse SA, Emire SA. Production and processing of antioxidant bioactive peptides: A driving force for the functional food market. Heliyon 2020; 6:e04765. [PMID: 32913907 PMCID: PMC7472861 DOI: 10.1016/j.heliyon.2020.e04765] [Citation(s) in RCA: 78] [Impact Index Per Article: 19.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 05/06/2020] [Accepted: 08/18/2020] [Indexed: 02/04/2023] Open
Abstract
Recently, the demand for functional foods in the global market has increased rapidly due to the increasing occurrences of non-communicable diseases and technological advancement. Antioxidant peptides have been suggested as ingredients used to produce health-promoting foods. These peptides are encrypted from various food derived protein sources by chemical and enzymatic hydrolysis, and microbial fermentation. However, the industrial-scale production of antioxidant peptides is hampered by different problems such as high production cost, and low yield and bioactivity. Accordingly, novel processing technologies, such as high pressure, microwave and pulsed electric field, have been recently emerged to overcome the problems associated with the conventional hydrolysis methods. This particular review, therefore, discussed the current processing technologies used to produce antioxidant peptides. The review also suggested further perspectives that should be addressed in the future.
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Affiliation(s)
- Solomon Abebaw Tadesse
- Department of Food Science and Applied Nutrition, College of Applied Sciences, Addis Ababa Science and Technology University, P.O.Box 16417, Addis Ababa, Ethiopia
| | - Shimelis Admassu Emire
- Department of Food Engineering, School of Chemical and Bioengineering, Addis Ababa Institute of Technology, Addis Ababa University, Ethiopia
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23
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Hao L, Gao X, Zhou T, Cao J, Sun Y, Dang Y, Pan D. Angiotensin I-Converting Enzyme (ACE) Inhibitory and Antioxidant Activity of Umami Peptides after In Vitro Gastrointestinal Digestion. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:8232-8241. [PMID: 32662986 DOI: 10.1021/acs.jafc.0c02797] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Umami peptides can help reduce the salt content in foods while still maintaining a savory taste. Few studies have reported the bioactivity of umami peptides after consumption. We studied the bioactivities of 12 umami peptides after gastrointestinal digestion. Three umami peptides exhibited angiotensin I-converting enzyme (ACE) inhibitory and antioxidant activity after digestion. Six novel peptides were identified from digestion solutions of the peptides by HPLC-MS/MS. Among them, CC, CCNK, and HCHT had both ACE inhibitory activity (IC50 values were 9.81, 9.00, and 114.99 μM, respectively) and antioxidant activity (strong 1,1-Diphenyl-2-pycryl-hydrazyl (DPPH) and 2,2'-azino-bis(3-ethylbenzothiazoline-6-sulfonic acid) diammonium salt (ABTS) free radical scavenging activities). AHSVRF had strong ACE inhibitory activity. These peptides increased the nitric oxide concentration and decreased the content of endothelin-1 in a medium of human umbilical vein endothelial cells in a dose-dependent manner. Experiments with damaged HepG2 cells showed that peptides CC, CCNK, and HCHT had antioxidant activity through their cytoprotective effects and by reducing the reactive oxygen species content. The results indicated that umami peptides may provide many health benefits after consumption.
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Affiliation(s)
- Li Hao
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, Zhejiang, China
| | - Xinchang Gao
- Institute of Drug Discovery Technology, Ningbo University, Ningbo 315211, Zhejiang, China
| | - Tingyi Zhou
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, Zhejiang, China
| | - Jinxuan Cao
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, Zhejiang, China
| | - Yangying Sun
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, Zhejiang, China
| | - Yali Dang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, Zhejiang, China
| | - Daodong Pan
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, Zhejiang, China
- National R&D Center for Freshwater Fish Processing, Jiangxi Normal University, Nanchang 330022, Jiangxi, China
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24
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Wu R, Huang J, Huan R, Chen L, Yi C, Liu D, Wang M, Liu C, He H. New insights into the structure-activity relationships of antioxidative peptide PMRGGGGYHY. Food Chem 2020; 337:127678. [PMID: 32791429 DOI: 10.1016/j.foodchem.2020.127678] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 07/01/2020] [Accepted: 07/23/2020] [Indexed: 12/14/2022]
Abstract
The sequence and structure of antioxidant peptides play fundamental roles in their antioxidant functions. However, the structural mechanism of antioxidant peptides is still unclear. In this study, we used quantum calculations to reveal the antioxidant mechanism of the peptide PMRGGGGYHY. PMRGGGGYHY has multiple antioxidant active sites, and two tyrosine residues were determined to be the major active sites. Based on the structure-activity relationships of PMRGGGGYHY, the antioxidant activity of the modified peptide significantly improved by 4.8-fold to 9.73 ± 0.61 μmol TE/μmol. In addition, the removal of glycine residues from PMRGGGGYHY would increase the energy of the HOMOs and simplify the hydrogen bonding network, causing a significant increase in antioxidant activity. The intracellular ROS scavenging ability gradually decreased with decreasing glycine content. This same peptide has very different effects in vitro versus as a cellular antioxidant. This paper provides new insights into the structural mechanism and rational design/modification of novel antioxidant peptides.
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Affiliation(s)
- RiBang Wu
- School of Life Sciences, Central South University, Changsha 410013, China
| | - JiaFeng Huang
- School of Life Sciences, Central South University, Changsha 410013, China
| | - Ran Huan
- School of Life Sciences, Central South University, Changsha 410013, China
| | - LeiLei Chen
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), China; Institute of Agro-Food Science and Technology, Shandong Academy of Agricultural Sciences, Key Laboratory of Agro-Products Processing Technology of Shandong Province, Key Laboratory of Novel Food Resources Processing, Ministry of Agriculture, 202 Gongye North Road, Jinan 250100, China
| | - CuiPing Yi
- School of Chemistry and Food Engineering, Changsha University of Science and Technology, Changsha 410114, China
| | - Dan Liu
- School of Life Sciences, Central South University, Changsha 410013, China
| | - Meng Wang
- School of Life Sciences, Central South University, Changsha 410013, China
| | - CongLing Liu
- School of Life Sciences, Central South University, Changsha 410013, China
| | - HaiLun He
- School of Life Sciences, Central South University, Changsha 410013, China.
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25
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Shao L, Sun Y, Liang J, Li M, Li X. Decolorization affects the structural characteristics and antioxidant activity of polysaccharides from Thesium chinense Turcz: Comparison of activated carbon and hydrogen peroxide decolorization. Int J Biol Macromol 2020; 155:1084-1091. [DOI: 10.1016/j.ijbiomac.2019.11.074] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2019] [Revised: 10/25/2019] [Accepted: 11/07/2019] [Indexed: 12/20/2022]
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26
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The mechanism of pulsed electric field (PEF) targeting location on the spatial conformation of pine nut peptide. J Theor Biol 2020; 492:110195. [DOI: 10.1016/j.jtbi.2020.110195] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2019] [Revised: 12/30/2019] [Accepted: 02/11/2020] [Indexed: 12/17/2022]
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27
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Cocoa tea (Camellia ptilophylla) induces mitochondria-dependent apoptosis in HCT116 cells via ROS generation and PI3K/Akt signaling pathway. Food Res Int 2019; 129:108854. [PMID: 32036895 DOI: 10.1016/j.foodres.2019.108854] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2019] [Revised: 11/17/2019] [Accepted: 11/20/2019] [Indexed: 12/24/2022]
Abstract
Cocoa tea (Camellia ptilophylla), a natural gallocatechin gallate (GCG)-rich and low caffeine-containing tea species, has been recently reported to possess various bioactivities. However, the anti-colon cancer effects of Cocoa tea and its underlying mechanisms remain virtually unknown. This study aimed to assess the anti-proliferative and pro-apoptotic effects of water extract of Cocoa tea (CWE) on human colon cancer HCT116 cells compared with Yunnan Daye tea (YWE). Primarily, CWE showed stronger anti-proliferation and apoptosis induction than YWE. Moreover, reduction of mitochondrial membrane potential (MMP), up-regulation of Bax/Bcl-2 ratio, release of cytochrome c, activation of caspase-9 and -3, and cleavage of poly (ADP-ribose) polymerase (PARP) were observed, suggesting that mitochondrial apoptotic pathway was activated by CWE. Furthermore, CWE-induced apoptosis in HCT116 cells was dependent on the generation of intracellular reactive oxygen species (ROS) and down-regulation of phosphatidylinositol-3-kinase (PI3K)/Akt pathway. Pretreatment with ROS scavenger N-acetyl cysteine (NAC) attenuated the impact of CWE on mitochondria-related apoptosis proteins, and partially recovered the inhibition of Akt phosphorylation. These results indicated that ROS generation mediated mitochondrial dysfunction and inactivation of PI3K/Akt pathway in CWE-induced HCT116 cell apoptosis. Additionally, CWE significantly inhibited tumor growth in HCT116 tumor-bearing mice, suggesting that Cocoa tea could act as a potential functional beverage to prevent or treat colorectal cancer.
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