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Salekeen R, Haider AN, Akhter F, Billah MM, Islam ME, Didarul Islam KM. Lipid oxidation in pathophysiology of atherosclerosis: Current understanding and therapeutic strategies. INTERNATIONAL JOURNAL OF CARDIOLOGY CARDIOVASCULAR RISK AND PREVENTION 2022; 14:200143. [PMID: 36060286 PMCID: PMC9434419 DOI: 10.1016/j.ijcrp.2022.200143] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 07/04/2022] [Accepted: 07/18/2022] [Indexed: 01/21/2023]
Abstract
A marked increase in the global prevalence of ischemic heart disease demands focused research for novel and more effective therapeutic strategies. At present, atherosclerotic cardiovascular disease (ACVD) is the leading cause of the global incidence of heart attacks and a major contributor to many peripheral cardiac diseases. Decades of research have unearthed the complex and multidimensional pathophysiology of ACVD encompassing oxidative stress, redox imbalance, lipid peroxidation, pro-inflammatory signaling, hyperglycemic stress and diabetes mellitus, chronic low-grade inflammation and aging, immune dysregulation, vascular dysfunction, loss of hemostasis, thrombosis, and fluid shear stress. However, the scientific basis of therapeutic interventions using conventional understandings of the disease mechanisms has been subject to renewed scrutiny with novel findings in recent years. This critical review attempts to revise the pathophysiological mechanisms of atherosclerosis using a recent body of literature, with a focus on lipid metabolism and associated cellular and biochemical processes. The comprehensive study encompasses different molecular perspectives in the development and progression of coronary atherosclerosis. The review also summarizes currently prescribed small molecule therapeutics in inflammation and ACVD, and overviews prospective management measures under development including peptides and microRNA therapeutics. The study provides updated insights into the current knowledge of coronary atherosclerosis, and highlights the need for effective prevention, management and development of novel intervention approaches to overcome this chronic epidemic.
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Affiliation(s)
- Rahagir Salekeen
- Biotechnology and Genetic Engineering Discipline, Life Science School, Khulna University, Khulna, 9208, Bangladesh
| | - Abu Nasim Haider
- Biotechnology Program, Department of Mathematics and Natural Sciences, BRAC University, Dhaka, 1212, Bangladesh
| | - Fouzia Akhter
- Khulna Medical College Hospital, Khulna, 9000, Bangladesh
| | - Md Morsaline Billah
- Biotechnology and Genetic Engineering Discipline, Life Science School, Khulna University, Khulna, 9208, Bangladesh
| | - Md Emdadul Islam
- Biotechnology and Genetic Engineering Discipline, Life Science School, Khulna University, Khulna, 9208, Bangladesh
| | - Kazi Mohammed Didarul Islam
- Biotechnology and Genetic Engineering Discipline, Life Science School, Khulna University, Khulna, 9208, Bangladesh
- Corresponding author.
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2
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Ozawa H, Miyazawa T, Burdeos GC, Miyazawa T. Biological Functions of Antioxidant Dipeptides. J Nutr Sci Vitaminol (Tokyo) 2022; 68:162-171. [PMID: 35768247 DOI: 10.3177/jnsv.68.162] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
In the history of modern nutritional science, understanding antioxidants is one of the major topics. In many cases, food-derived antioxidants have π conjugate or thiol group in their molecular structures because π conjugate stabilizes radical by its delocalization and two thiol groups form a disulfide bond in its antioxidative process. In recent years, antioxidant peptides have received much attention because for their ability to scavenge free radicals, inhibition of lipid peroxidation, chelation of transition metal ions, as well as their additional nutritional value. Among them, dipeptides are attracting much interest as post-amino acids, which have residues in common with amino acids, but also have different physiological properties and functions from those of amino acids. Especially, dipeptides containing moieties of several amino acid (tryptophan, tyrosine, histidine, cysteine, and methionine) possess potent antioxidant activity. This review summarizes previous details of structural property, radical scavenging activity, and biological activity of antioxidant dipeptide. Hopefully, this review will help provide a new insight into the study of the biological functions of antioxidant dipeptides.
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Affiliation(s)
- Hitoshi Ozawa
- New Industry Creation Hatchery Center (NICHe), Tohoku University
| | - Taiki Miyazawa
- New Industry Creation Hatchery Center (NICHe), Tohoku University
| | | | - Teruo Miyazawa
- New Industry Creation Hatchery Center (NICHe), Tohoku University
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3
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de Campos Zani SC, Son M, Bhullar KS, Chan CB, Wu J. IRW (Isoleucine-Arginine-Tryptophan) Improves Glucose Tolerance in High Fat Diet Fed C57BL/6 Mice via Activation of Insulin Signaling and AMPK Pathways in Skeletal Muscle. Biomedicines 2022; 10:biomedicines10061235. [PMID: 35740257 PMCID: PMC9220315 DOI: 10.3390/biomedicines10061235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 05/24/2022] [Accepted: 05/25/2022] [Indexed: 02/01/2023] Open
Abstract
IRW (Isoleucine−Arginine−Tryptophan), has antihypertensive and anti-inflammatory properties in cells and animal models and prevents angiotensin-II- and tumor necrosis factor (TNF)-α-induced insulin resistance (IR) in vitro. We investigated the effects of IRW on body composition, glucose homeostasis and insulin sensitivity in a high-fat diet (HFD) induced insulin resistant (IR) model. C57BL/6 mice were fed HFD for 6 weeks, after which IRW was incorporated into the diet (45 or 15 mg/kg body weight (BW)) until week 14. IRW45 (at a dose of 45 mg/kg BW) reduced BW (p = 0.0327), fat mass gain (p = 0.0085), and preserved lean mass of HFD mice (p = 0.0065), concomitant with enhanced glucose tolerance and reduced fasting glucose (p < 0.001). In skeletal muscle, IRW45 increased insulin-stimulated protein kinase B (AKT) phosphorylation (p = 0.0132) and glucose transporter 4 (GLUT4) translocation (p < 0.001). Angiotensin 2 receptor (AT2R) (p = 0.0024), phosphorylated 5′-AMP-activated protein kinase (AMPKα) (p < 0.0124) and peroxisome proliferator-activated receptor gamma (PPARγ) (p < 0.001) were enhanced in skeletal muscle of IRW45-treated mice, as was the expression of genes involved in myogenesis. Plasma angiotensin converting enzyme-2 (ACE2) activity was increased (p = 0.0016). Uncoupling protein-1 in white adipose tissue (WAT) was partially restored after IRW supplementation. IRW improves glucose tolerance and body composition in HFD-fed mice and promotes glucose uptake in skeletal muscle via multiple signaling pathways, independent of angiotensin converting enzyme (ACE) inhibition.
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Affiliation(s)
| | - Myoungjin Son
- Department of Agricultural Food & Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada; (M.S.); (K.S.B.)
| | - Khushwant S. Bhullar
- Department of Agricultural Food & Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada; (M.S.); (K.S.B.)
- Department of Pharmacology, University of Alberta, Edmonton, AB T6G 2H7, Canada
| | - Catherine B. Chan
- Department of Physiology, University of Alberta, Edmonton, AB T6G 2H7, Canada; (S.C.d.C.Z.); (C.B.C.)
- Department of Agricultural Food & Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada; (M.S.); (K.S.B.)
| | - Jianping Wu
- Department of Agricultural Food & Nutritional Science, University of Alberta, Edmonton, AB T6G 2P5, Canada; (M.S.); (K.S.B.)
- Correspondence: ; Tel.: +1-780-492-6885; Fax: +1-780-492-4346
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4
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Zhang W, Tan B, Deng J, Haitao Z. Multiomics analysis of soybean meal induced marine fish enteritis in juvenile pearl gentian grouper, Epinephelus fuscoguttatus ♀ × Epinephelus lanceolatus ♂. Sci Rep 2021; 11:23319. [PMID: 34857775 PMCID: PMC8640039 DOI: 10.1038/s41598-021-02278-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Accepted: 09/20/2021] [Indexed: 01/02/2023] Open
Abstract
As an important protein source, soybean products can cause intestinal inflammation and injury in many animals including human beings, particularly infants and juvenile individuals. Research in this field has been performed for terrestrial animals and fish, but still lacks integrity and systematicness. In this study, the main biological processes in the intestinal tract of marine fish juvenile pearl gentian grouper in the state of soybean meal-induced enteritis (SBMIE) were analyzed. A total of 720 groupers with an approximate initial weight of 12.5 g were randomly divided into three groups: the fish meal (FM) control group, the 20% SBM group (SBM20), and the SBM40 group (n = 4). Three iso-nitrogenous and iso-lipidic diets were prepared and fed to fish for 10 weeks. Each barrel contained a water volume of about 1 m3 in and was exposed to natural light and temperature. Results indicated that the growth and physiology of groupers fed with SBM were significantly negatively affected, with the gene expressions of intestinal structural protein abnormal. 16SrDNA high-throughput sequencing showed that the intestinal microflora played an important role in the pathogenesis of pearl gentian grouper SBMIE, which may activate a variety of pathogen pattern recognition receptors, such as toll-like receptors (TLRs), RIG-I-like receptors, and nod-like receptors. Transcriptome analysis revealed that changes of the SBMIE signaling pathway in pearl gentian groupers were conservative to some extent than that of terrestrial animals and freshwater fish. Moreover, the TLRs-nuclear factor kappa-B signaling pathway becomes activated, which played an important role in SBMIE. Meanwhile, the signal pathways related to nutrient absorption and metabolism were generally inhibited. Metabolomics analysis showed that isoflavones and saponins accounted for a large proportion in the potential biomarkers of pearl gentian grouper SBMIE, and most of the biomarkers had significantly positive or negative correlations with each other; 56 metabolites were exchanged between intestinal tissues and contents, which may play an important role in the development of enteritis, including unsaturated fatty acids, organic acids, amino acids, vitamins, small peptides, and nucleotides, etc. These results provide a basic theoretical reference for solving the intestinal issues of fish SBMIE and research of inflammatory bowel disease in mammals.
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Affiliation(s)
- Wei Zhang
- Laboratory of Aquatic Animal Nutrition and Feed, College of Fisheries, Guangdong Ocean University, Zhanjiang, 524025, Guangdong, People's Republic of China
- Aquatic Animals Precision Nutrition and High Efficiency Feed Engineering Research Center of Guangdong Province, Zhanjiang, 524025, Guangdong, People's Republic of China
- Key Laboratory of Aquatic, Livestock and Poultry Feed Science and Technology in South China, Ministry of Agriculture, Zhanjiang, 524025, Guangdong, People's Republic of China
| | - Beiping Tan
- Laboratory of Aquatic Animal Nutrition and Feed, College of Fisheries, Guangdong Ocean University, Zhanjiang, 524025, Guangdong, People's Republic of China.
- Aquatic Animals Precision Nutrition and High Efficiency Feed Engineering Research Center of Guangdong Province, Zhanjiang, 524025, Guangdong, People's Republic of China.
- Key Laboratory of Aquatic, Livestock and Poultry Feed Science and Technology in South China, Ministry of Agriculture, Zhanjiang, 524025, Guangdong, People's Republic of China.
- Laboratory of Aquatic Animal Nutrition and Feed, College of Fisheries, Guangdong Ocean University, Zhanjiang, 524088, Guangdong, People's Republic of China.
| | - Junming Deng
- Laboratory of Aquatic Animal Nutrition and Feed, College of Fisheries, Guangdong Ocean University, Zhanjiang, 524025, Guangdong, People's Republic of China
- Aquatic Animals Precision Nutrition and High Efficiency Feed Engineering Research Center of Guangdong Province, Zhanjiang, 524025, Guangdong, People's Republic of China
- Key Laboratory of Aquatic, Livestock and Poultry Feed Science and Technology in South China, Ministry of Agriculture, Zhanjiang, 524025, Guangdong, People's Republic of China
| | - Zhang Haitao
- Key Laboratory of Aquatic, Livestock and Poultry Feed Science and Technology in South China, Ministry of Agriculture, Zhanjiang, 524025, Guangdong, People's Republic of China
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5
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Kim IS, Yang WS, Kim CH. Beneficial Effects of Soybean-Derived Bioactive Peptides. Int J Mol Sci 2021; 22:8570. [PMID: 34445273 PMCID: PMC8395274 DOI: 10.3390/ijms22168570] [Citation(s) in RCA: 43] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2021] [Revised: 08/04/2021] [Accepted: 08/07/2021] [Indexed: 12/19/2022] Open
Abstract
Peptides present in foods are involved in nutritional functions by supplying amino acids; sensory functions related to taste or solubility, emulsification, etc.; and bioregulatory functions in various physiological activities. In particular, peptides have a wide range of physiological functions, including as anticancer agents and in lowering blood pressure and serum cholesterol levels, enhancing immunity, and promoting calcium absorption. Soy protein can be partially hydrolyzed enzymatically to physiologically active soy (or soybean) peptides (SPs), which not only exert physiological functions but also help amino acid absorption in the body and reduce bitterness by hydrolyzing hydrophobic amino acids from the C- or N-terminus of soy proteins. They also possess significant gel-forming, emulsifying, and foaming abilities. SPs are expected to be able to prevent and treat atherosclerosis by inhibiting the reabsorption of bile acids in the digestive system, thereby reducing blood cholesterol, low-density lipoprotein, and fat levels. In addition, soy contains blood pressure-lowering peptides that inhibit angiotensin-I converting enzyme activity and antithrombotic peptides that inhibit platelet aggregation, as well as anticancer, antioxidative, antimicrobial, immunoregulatory, opiate-like, hypocholesterolemic, and antihypertensive activities. In animal models, neuroprotective and cognitive capacity as well as cardiovascular activity have been reported. SPs also inhibit chronic kidney disease and tumor cell growth by regulating the expression of genes associated with apoptosis, inflammation, cell cycle arrest, invasion, and metastasis. Recently, various functions of soybeans, including their physiologically active functions, have been applied to health-oriented foods, functional foods, pharmaceuticals, and cosmetics. This review introduces some current results on the role of bioactive peptides found in soybeans related to health functions.
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Affiliation(s)
- Il-Sup Kim
- Advanced Bioresource Research Center, Kyungpook National University, Daegu 41566, Korea;
| | | | - Cheorl-Ho Kim
- Molecular and Cellular Glycobiology Unit, Department of Biological Sciences, SungKyunKwan University, Seoul 16419, Gyunggi-Do, Korea
- Samsung Advanced Institute of Health Science and Technology, Seoul 16419, Gyunggi-Do, Korea
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6
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Sommella E, Carrizzo A, Merciai F, Di Sarno V, Carbone D, De Lucia M, Musella S, Vecchione C, Campiglia P. Analysis of the metabolic switch induced by the spirulina peptide SP6 in high fat diet ApoE -/- mice model: A direct infusion FT-ICR-MS based approach. J Pharm Biomed Anal 2020; 195:113865. [PMID: 33387838 DOI: 10.1016/j.jpba.2020.113865] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Revised: 12/14/2020] [Accepted: 12/19/2020] [Indexed: 10/22/2022]
Abstract
Atherosclerosis, dyslipidemia and hypertension are comorbid diseases often found in combination. Among different pharmacological approaches the employment of natural multifunctional peptides is an attractive option as side therapy. Mass spectrometry-based metabolomics provide valuable information on metabolic changes and can be useful to elucidate peptide pharmacodynamics. In this this work we performed a preliminary investigation on the potential effect of a recently characterized Spirulina platensis peptide named SP6 (GIVAGDVTPI) on the modulation of metabolism in a high fat diet ApoE-/- mice atherosclerotic model. A direct infusion Fourier transform ion cyclotron resonance mass spectrometry (DI-FT-ICR-MS) approach was used to elucidate polar and non-polar metabolites extracted by mice plasma following four weeks SP6 treatment. The method delivered fast analysis time, repeatability, high mass accuracy and resolution for unambiguous molecular formula assignment. Multivariate statistical analysis (PLS-DA) highlighted a clear class separation, revealing the alteration of numerous metabolites levels belonging to different classes. In particular sphingolipids, glycerophospholipids, TCA cycle intermediates, and amino acids, which are key players in the atherosclerotic process and progression, were upregulated in saline alone HFD ApoE-/- group, while were sensibly decreased after treatment with SP6 peptide. These results could open the way to further, large-scale, investigation of SP6 peptide effects in the regulation of atherosclerotic disease development and progression, and show the potential of DI-FT-ICR as fast analytical tool to take snaphshots of metabolic changes before moving to targeted MS-based approaches.
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Affiliation(s)
- Eduardo Sommella
- Department of Pharmacy, University of Salerno, Fisciano, SA, Italy
| | - Albino Carrizzo
- Department of Medicine and Surgery (A.C., C.V.), University of Salerno, Baronissi SA, Italy; IRCCS Neuromed, Loc. Camerelle, Pozzilli, IS, Italy
| | - Fabrizio Merciai
- Department of Pharmacy, University of Salerno, Fisciano, SA, Italy; PhD Program in Drug Discovery and Development, University of Salerno, Fisciano, SA, Italy
| | | | - Daniela Carbone
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, Via Archirafi 32, Palermo, 90123, Italy
| | | | - Simona Musella
- European Biomedical Research Institute of Salerno, Via De Renzi 50, I-84125 Salerno, Italy
| | - Carmine Vecchione
- Department of Medicine and Surgery (A.C., C.V.), University of Salerno, Baronissi SA, Italy; IRCCS Neuromed, Loc. Camerelle, Pozzilli, IS, Italy
| | - Pietro Campiglia
- Department of Pharmacy, University of Salerno, Fisciano, SA, Italy; European Biomedical Research Institute of Salerno, Via De Renzi 50, I-84125 Salerno, Italy
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7
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Tong L, Ju Z, Liu L, Wang L, Zhou X, Xiao T, Zhou S. Rice-derived peptide AAGALPS inhibits TNF-α-induced inflammation and oxidative stress in vascular endothelial cells. Food Sci Nutr 2020; 8:659-667. [PMID: 31993189 PMCID: PMC6977420 DOI: 10.1002/fsn3.1354] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 11/19/2019] [Accepted: 11/25/2019] [Indexed: 01/13/2023] Open
Abstract
Injury of vascular endothelial cell is one of the main factors triggering atherosclerosis. Peptide AAGALPS was derived from digestion and absorption product of rice α-globulin, which was proved to prevent atherosclerosis in previous study. This study aims to investigate the potential effects of AAGALPS on improving tumor necrosis factor-α (TNF-α)-stimulated human umbilical vein endothelial cells' (HUVECs) injury. As a result, the viability of HUVECs stimulated by tumor necrosis factor-α was significantly increased by AAGALPS in a dose-dependent manner until 25 μg/ml. The peptide obviously reduced the levels of intercellular adhesion molecule-1, vascular cell adhesion molecule-1, nitric oxide, inducible nitric oxide synthase, reactive oxygen species, and malondialdehyde and increased the concentrations of glutathione peroxidase. Furthermore, AAGALPS inhibited the nuclear factor κB (NF-κB) activation and nuclear translocation through regulating inhibitor of nuclear factor κB kinase α and inhibitor of NF-κB. These results indicated that AAGALPS protected vascular endothelial cells through mediating inflammation and oxidative stress.
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Affiliation(s)
- Li‐Tao Tong
- Institute of Agro‐Products Processing Science and TechnologyChinese Academy of Agricultural Sciences/Key Laboratory of Agro‐Products ProcessingMinistry of AgricultureBeijingChina
| | - Zhiyuan Ju
- Institute of Agro‐Products Processing Science and TechnologyChinese Academy of Agricultural Sciences/Key Laboratory of Agro‐Products ProcessingMinistry of AgricultureBeijingChina
| | - Liya Liu
- Institute of Agro‐Products Processing Science and TechnologyChinese Academy of Agricultural Sciences/Key Laboratory of Agro‐Products ProcessingMinistry of AgricultureBeijingChina
| | - Lili Wang
- Institute of Agro‐Products Processing Science and TechnologyChinese Academy of Agricultural Sciences/Key Laboratory of Agro‐Products ProcessingMinistry of AgricultureBeijingChina
| | - Xianrong Zhou
- Institute of Agro‐Products Processing Science and TechnologyChinese Academy of Agricultural Sciences/Key Laboratory of Agro‐Products ProcessingMinistry of AgricultureBeijingChina
| | - Tianzhen Xiao
- Institute of Agro‐Products Processing Science and TechnologyChinese Academy of Agricultural Sciences/Key Laboratory of Agro‐Products ProcessingMinistry of AgricultureBeijingChina
| | - Sumei Zhou
- Institute of Agro‐Products Processing Science and TechnologyChinese Academy of Agricultural Sciences/Key Laboratory of Agro‐Products ProcessingMinistry of AgricultureBeijingChina
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8
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Tong LT, Ju Z, Wang L, Qiu J, Liu L, Zhou X, Liang T, Geng D, Zhou S. Peptides derived from rice α-globulin reduce atherosclerosis in apolipoprotein E-deficient mice by inhibiting TNF-α-induced vascular endothelial cells injury. J Funct Foods 2019. [DOI: 10.1016/j.jff.2019.103582] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
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9
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Tanaka M, Dohgu S, Komabayashi G, Kiyohara H, Takata F, Kataoka Y, Nirasawa T, Maebuchi M, Matsui T. Brain-transportable dipeptides across the blood-brain barrier in mice. Sci Rep 2019; 9:5769. [PMID: 30962462 PMCID: PMC6453885 DOI: 10.1038/s41598-019-42099-9] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Accepted: 03/22/2019] [Indexed: 01/13/2023] Open
Abstract
Apart from nutrients required for the brain, there has been no report that naturally occurring peptides can cross the blood-brain barrier (BBB). The aim of this study was to identify the BBB-transportable peptides using in situ mouse perfusion experiments. Based on the structural features of Gly-N-methylated Gly (Gly-Sar), a reported BBB-transportable compound, 18 dipeptides were synthesized, and were perfused in the mouse brain for two minutes. Among the synthesized dipeptides, Gly-Sar, Gly-Pro, and Tyr-Pro were transported across the BBB with Ki values of 7.60 ± 1.29, 3.49 ± 0.66, and 3.53 ± 0.74 µL/g·min, respectively, and accumulated in the mouse brain parenchyma. Additionally, using MALDI-MS/MS imaging analysis of Tyr-Pro-perfused brain, we provide evidence for Tyr-Pro accumulation in the hippocampus, hypothalamus, striatum, cerebral cortex, and cerebellum of mouse brain.
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Affiliation(s)
- Mitsuru Tanaka
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School of Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Shinya Dohgu
- Department of Pharmaceutical Care and Health Sciences, Faculty of Pharmaceutical Sciences, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka, 814-0180, Japan
| | - Genki Komabayashi
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School of Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Hayato Kiyohara
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School of Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Fuyuko Takata
- Department of Pharmaceutical Care and Health Sciences, Faculty of Pharmaceutical Sciences, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka, 814-0180, Japan
| | - Yasufumi Kataoka
- Department of Pharmaceutical Care and Health Sciences, Faculty of Pharmaceutical Sciences, Fukuoka University, 8-19-1 Nanakuma, Jonan-ku, Fukuoka, 814-0180, Japan
| | - Takashi Nirasawa
- Bruker Japan K.K., 3-9 Moriya-cho, Kanagawa-ku, Yokohama, Kanagawa, 221-0022, Japan
| | - Motohiro Maebuchi
- FUJI OIL CO., Ltd., Research and Development Division, 1 Sumiyoshi-cho, Izumisano, Osaka, 598-8540, Japan
| | - Toshiro Matsui
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School of Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan.
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10
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Hou Q, Li C, Liu Y, Li W, Chen Y, Siqinbateer, Bao Y, saqila W, Zhang H, Menghe B, Sun Z. Koumiss consumption modulates gut microbiota, increases plasma high density cholesterol, decreases immunoglobulin G and albumin. J Funct Foods 2019. [DOI: 10.1016/j.jff.2018.11.023] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
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11
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Affiliation(s)
- Weilin Shen
- Division of Bioscience and Biotechnology Faculty of Agriculture Graduate School of Kyushu University 744 Motooka Nishi‐ku Fukuoka 819‐0395 Japan
| | - Toshiro Matsui
- Division of Bioscience and Biotechnology Faculty of Agriculture Graduate School of Kyushu University 744 Motooka Nishi‐ku Fukuoka 819‐0395 Japan
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12
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Shen W, Matsui T. Current knowledge of intestinal absorption of bioactive peptides. Food Funct 2018; 8:4306-4314. [PMID: 29139513 DOI: 10.1039/c7fo01185g] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Peptides have been demonstrated as potentially beneficial compounds against several life-style related diseases such as hypertension, hypercholesterolemia, and atherosclerosis, among others. However, limited research has been carried out on peptide absorption, resulting in a lack of understanding and control of this process. Therefore, this review discusses the recent insights gathered on in vitro and in vivo absorption of peptides across intestinal membranes, into blood circulation. Briefly, some di-/tripeptides permeate through intestinal membranes in their intact forms via peptide transporter systems, while others are vulnerable to protease degradation. Oligopeptides (>tetrapeptides) show a lower transport ability than di-/tripeptides, possibly due to the presence of paracellular tight junctions. The hydrophobicity of peptides (log P) does not seem to influence absorption, while peptide length and degradation of peptides (and peptide sequences) by intestinal proteases may be determinant factors of the absorption process.
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Affiliation(s)
- Weilin Shen
- Faculty of Agriculture, Graduate School of Kyushu University, Fukuoka 812-8581, Japan.
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13
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Nagaoka S. Structure-function properties of hypolipidemic peptides. J Food Biochem 2018; 43:e12539. [PMID: 31353491 DOI: 10.1111/jfbc.12539] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2017] [Revised: 01/12/2018] [Accepted: 02/19/2018] [Indexed: 01/06/2023]
Abstract
This review addresses the structure-function properties of hypolipidemic peptides. The cholesterol-lowering peptide (lactostatin: IIAEK) operates via a new regulatory pathway in the calcium-channel-related mitogen-activated protein kinase (MAPK) signaling pathway of cholesterol degradation. The bile acid binding peptide (soystatin, VAWWMY) inhibits the micellar solubility of cholesterol in vitro and cholesterol absorption in vivo. VVYP is the most effective peptide having hypotriglyceridemic action in globin digests. The suppressive effect of globin digest on postprandial hyperlipidemia has been reported in humans. The ability of peptides (KRES, Apolipoprotein A-I mimetic peptides) to interact with lipids, remove LOOH and activate antioxidant enzymes associated with high-density lipoprotein determines their anti-inflammatory and anti-atherogenic properties. The β-conglycinin derived peptides KNPQLR, EITPEKNPQLR, and RKQEEDEDEEQQRE inhibit fatty acid synthase in vitro. These promising findings indicate the need for more conclusive molecular, cellular, and animal and human studies to design innovative new peptides that ameliorate cholesterol and lipid metabolism. PRACTICAL APPLICATIONS: Prevention and amelioration of hypercholesterolemia by dietary regulation are important. Dietary protein and peptides are very useful as regulators of serum cholesterol concentration. Diets low in saturated fat and cholesterol that include soy protein may reduce the risk of heart disease. In Japan, the concept of "food for specified health use" has been introduced for the prevention and treatment of life-style related disease. Thus, peptides derived from food proteins and sources other than food proteins such as peptide-rich functional foods and nutraceutical products, have considerable potential to prevent lifestyle-related diseases, especially hyperlipidemia, as discussed in this review. Furthermore, various strategies have been used for the efficient screening, development, and application of new hypolipidemic peptides. These include the use of phage display (for anti-obesity peptide), peptide mimetics (for anti-atherogenic peptide), and molecular targets such as CYP7A1 (for hypocholesterolemic peptide) and prohibitin (for anti-obesity peptide).
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Affiliation(s)
- Satoshi Nagaoka
- Department of Applied Life Science, Faculty of Applied Biological Sciences, Gifu University, Gifu, Japan
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Wu GC, Lin SY, Liang HJ, Hou WC. 135-Day Interventions of Yam Dioscorin and the Dipeptide Asn-Trp (NW) To Reduce Weight Gains and Improve Impaired Glucose Tolerances in High-Fat Diet-Induced C57BL/6 Mice. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:645-652. [PMID: 29282980 DOI: 10.1021/acs.jafc.7b05564] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
The C57BL/6J mice were fed a 135-day normal diet or a high-fat diet (HFD) without, or concurrent with, a single yam dioscorin (80 mg/kg) or dipeptide NW (40 mg/kg) intervention every day. The final body weights (g) of mice were 26.1 ± 1.4, 34.97 ± 2.1, 31.75 ± 2.6, and 31.66 ± 3.1, respectively, for normal diet-fed, HFD-fed, dioscorin-intervened, and NW-intervened group. The mice in both intervened groups showed similar less weight gains and had significant differences (P < 0.05) compared to those in the HFD group under the same cumulative HFD intakes. The blood biochemical index of mice with dioscorin interventions showed significantly lower contents in total cholesterol and low-density lipoprotein, and NW interventions showed significantly lower total triglyceride contents compared to those of the HFD group (P < 0.05). Both intervened mice exhibited similar reductions in total visceral lipid contents and have significant differences compared to those of the HFD group (P < 0.05). The dioscorin intervention was better than NW interventions in lowering blood glucose levels by oral glucose tolerance tests and both showed significant differences (P < 0.05) compared to those in the HFD group. Yam dioscorin or dipeptide NW will potentially be used for preventive functional foods of less body weight gains and impaired glucose tolerance controls, which require further clinical trial investigations.
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Affiliation(s)
| | - Shyr-Yi Lin
- Department of Primary Care Medicine, Taipei Medical University Hospital , Taipei 110, Taiwan
| | - Hong-Jen Liang
- Department of Food Science, Yuanpei University of Medical Technology , Hsinchu 300, Taiwan
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Affiliation(s)
- Toshiro Matsui
- Faculty of Agriculture, Graduate School of Kyushu University , 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
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16
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Hanh VT, Shen W, Tanaka M, Siltari A, Korpela R, Matsui T. Effect of Aging on the Absorption of Small Peptides in Spontaneously Hypertensive Rats. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:5935-5943. [PMID: 28594555 DOI: 10.1021/acs.jafc.7b01727] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
In the present study, we aimed to evaluate the effect of aging on the absorption of small peptides in spontaneously hypertensive rats (SHRs). Three kinds of dipeptides, glycyl-sarcosine (Gly-Sar), Trp-His, and captopril (a dipeptidomimetic drug), a Gly-Sar-Sar tripeptide, a Gly-Sar-Sar-Sar tetrapeptide, and a Gly-Sar-Sar-Sar-Sar pentapeptide were administered at doses of 10 mg/kg each to 8- and 40-week-old SHRs. The peptides were all detected in their intact forms in the blood. There was a significantly promoted absorption of di/tripeptides in aged SHRs compared with young SHRs. In contrast, the absorption of tetra/pentapeptides was not affected by aging. PepT1 expression in the mid-jejunum was significantly increased in 40-week-old SHRs compared with 8-week-old SHRs, whereas aging did not alter the expression of claudin-1, a tight junction related protein. Thus, the present results suggest that SHR aging may enhance the absorption of di/tripeptides through the enhanced PepT1 transport route, although oligopeptides may be absorbed in an age-independent manner.
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Affiliation(s)
- Vu Thi Hanh
- Faculty of Agriculture, Graduate School of Kyushu University , Fukuoka 812-8581, Japan
| | - Weilin Shen
- Faculty of Agriculture, Graduate School of Kyushu University , Fukuoka 812-8581, Japan
| | - Mitsuru Tanaka
- Faculty of Agriculture, Graduate School of Kyushu University , Fukuoka 812-8581, Japan
| | - Aino Siltari
- Pharmacology, Faculty of Medicine, University of Helsinki , P.O. Box 63, 00014 University of Helsinki, Finland
| | - Riita Korpela
- Pharmacology, Faculty of Medicine, University of Helsinki , P.O. Box 63, 00014 University of Helsinki, Finland
| | - Toshiro Matsui
- Faculty of Agriculture, Graduate School of Kyushu University , Fukuoka 812-8581, Japan
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Tanaka M. Study on the Physiological Benefits of Food Compounds on Vascular Health and Their Underlying Mechanisms. J JPN SOC FOOD SCI 2017. [DOI: 10.3136/nskkk.64.285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Mitsuru Tanaka
- Faculty of Agriculture, Graduate School of Kyushu University
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Tong LT, Ju Z, Qiu J, Wang L, Liu L, Zhou X, Zhou S. Peptide GEQQQQPGM derived from rice α-globulin reduces the risk of atherosclerosis in hamsters by improving vascular endothelial cells injury. RSC Adv 2017. [DOI: 10.1039/c7ra08304a] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The amino acid sequence of the peptide, GEQQQQPGM was determined by LC-mass spectrometry (MS)/MS.
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Affiliation(s)
- Li-Tao Tong
- Institute of Agro-Products Processing Science and Technology
- Chinese Academy of Agricultural Sciences
- Key Laboratory of Agro-Products Processing
- Ministry of Agriculture
- Beijing
| | - Zhiyuan Ju
- Institute of Agro-Products Processing Science and Technology
- Chinese Academy of Agricultural Sciences
- Key Laboratory of Agro-Products Processing
- Ministry of Agriculture
- Beijing
| | - Ju Qiu
- Institute of Food and Nutrition Development
- Ministry of Agriculture
- Beijing 100081
- China
| | - Lili Wang
- Institute of Agro-Products Processing Science and Technology
- Chinese Academy of Agricultural Sciences
- Key Laboratory of Agro-Products Processing
- Ministry of Agriculture
- Beijing
| | - Liya Liu
- Institute of Agro-Products Processing Science and Technology
- Chinese Academy of Agricultural Sciences
- Key Laboratory of Agro-Products Processing
- Ministry of Agriculture
- Beijing
| | - Xianrong Zhou
- Institute of Agro-Products Processing Science and Technology
- Chinese Academy of Agricultural Sciences
- Key Laboratory of Agro-Products Processing
- Ministry of Agriculture
- Beijing
| | - Sumei Zhou
- Institute of Agro-Products Processing Science and Technology
- Chinese Academy of Agricultural Sciences
- Key Laboratory of Agro-Products Processing
- Ministry of Agriculture
- Beijing
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Kumrungsee T, Akiyama S, Guo J, Tanaka M, Matsui T. Identification of peptides in wheat germ hydrolysate that demonstrate calmodulin-dependent protein kinase II inhibitory activity. Food Chem 2016; 213:329-335. [DOI: 10.1016/j.foodchem.2016.06.059] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Revised: 05/18/2016] [Accepted: 06/20/2016] [Indexed: 11/25/2022]
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Evaluating the Reduced Hydrophobic Taste Sensor Response of Dipeptides by Theasinensin A by Using NMR and Quantum Mechanical Analyses. PLoS One 2016; 11:e0157315. [PMID: 27309380 PMCID: PMC4911063 DOI: 10.1371/journal.pone.0157315] [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: 02/09/2016] [Accepted: 05/29/2016] [Indexed: 11/22/2022] Open
Abstract
The current study demonstrated that theasinensin A (TSA) had a potential to form the complex with hydrophobic Trp-containing dipeptides, and to reduce their membrane potential by artificial-lipid membrane taste sensor. At a 1:3 molar ratio of the 6 Trp-containing dipeptides together with TSA, we observed a significant chemical shift of the protons of the dipeptides (Δδ) to a high magnetic field, when analyzed using 1H-nuclear-magnetic resonance (NMR) spectroscopy. The Δδ values were correlated with the hydrophobicity (log P) of the dipeptides and significant correlations were obtained (P = 0.022, R2 = 0.77); e.g., Trp-Leu with the highest log P value of 1.623 among the tested dipeptides showed the highest Δδ value of 0.105 ppm for the H7 proton of Trp-Leu, while less chemical shifts were observed in theasinensin B and epigallocatechin-3-O-gallate. Diffusion-ordered NMR spectroscopy revealed that the diffusion coefficient of 3 mM of Trp-Leu (7.6 × 10−11 m2/s) at a pulse field gradient in the range 0.05–0.3 T/m decreased in the presence of 3 mM TSA (6.6 × 10−11 m2/s), suggesting that Trp-Leu forms a complex with TSA. Quantum mechanical calculations and rotating frame nuclear Overhauser effect-NMR spectroscopy provided configuration information on the geometry of the complex that Trp-Leu formed with TSA (1:1 complex) with a ΔG energy of –8.7 kJ/mol. A sensor analysis using artificial-lipid membranes demonstrated that the changes in membrane potential of 1 mM Trp-Leu (21.8 ± 1.3 mV) and Leu-Trp (5.3 ± 0.9 mV) were significantly (P < 0.001) reduced by 1 mM TSA (Trp-Leu, 13.1 ± 2.4 mV; Leu-Trp, 3.5 ± 0.5 mV; TSA alone, 0.2 ± 0.01 mV), indicating the effective suppression of hydrophobicity of dipeptides by TSA-formed complex.
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Fukuda T, Majumder K, Zhang H, Turner PV, Matsui T, Mine Y. Adenine Inhibits TNF-α Signaling in Intestinal Epithelial Cells and Reduces Mucosal Inflammation in a Dextran Sodium Sulfate-Induced Colitis Mouse Model. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:4227-4234. [PMID: 27166765 DOI: 10.1021/acs.jafc.6b00665] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Adenine (6-amino-6H-purine), found in molokheiya (Corchorus olitorius L.), has exerted vasorelaxation effects in the thoracic aorta. However, the mode of action of the anti-inflammatory effect of adenine is unclear. Thus, we investigated to clarify the effect of adenine on chronic inflammation of the gastrointestinal tract. In intestinal epithelial cells, adenine significantly inhibited tumor necrosis factor-α-induced interleukin-8 secretion. The inhibition of adenine was abolished under the treatment of inhibitors of adenyl cyclase (AC) and protein kinase A (PKA), indicating the effect of adenine was mediated through the AC/PKA pathway. Adenine (5, 10, and 50 mg/kg BW/day) was administered orally for 14 days to female BALB/c mice, and then 5% dextran sodium sulfate (DSS) was given to induce colitis. Adenine (5 mg/kg BW/day) significantly prevented DSS-induced colon shortening, expression of pro-inflammatory cytokines, and histological damage in the colon. These results suggest that adenine can be a promising nutraceutical for the prevention of intestinal inflammation.
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Affiliation(s)
- Toshihiko Fukuda
- Division of Bioresources and Bioenvironmental Sciences, Faculty of Agriculture, Graduate School, Kyushu University , Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | | | | | | | - Toshiro Matsui
- Division of Bioresources and Bioenvironmental Sciences, Faculty of Agriculture, Graduate School, Kyushu University , Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
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Hong SM, Tanaka M, Koyanagi R, Shen W, Matsui T. Structural Design of Oligopeptides for Intestinal Transport Model. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:2072-2079. [PMID: 26924013 DOI: 10.1021/acs.jafc.6b00279] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Glycyl-sarcosine (Gly-Sar) is a well-known model substrate for the intestinal uptake of dipeptides through peptide transporter 1 (PepT1). However, there are no other model peptides larger than tripeptides to evaluate their intestinal transport ability. In this study, we designed new oligopeptides based on the Gly-Sar structure in terms of protease resistance. Gly-Sar-Sar was found to be an appropriate transport model for tripeptides because it does not degrade during the transport across the rat intestinal membrane, while Gly-Gly-Sar was degraded to Gly-Sar during the 60 min transport. Caco-2 cell transport experiments revealed that the designed oligopeptides based on Gly-Sar-Sar showed a significantly (p < 0.05) lower transport ability by factors of 1/10-, 1/25-, and 1/40-fold for Gly-Sar-Sar, Gly-Sar-Sar-Sar, and Gly-Sar-Sar-Sar-Sar, respectively, compared to Gly-Sar (apparent permeability coefficient: 38.6 ± 11.4 cm/s). Cell experiments also showed that the designed tripeptide and Gly-Sar were transported across Caco-2 cell via PepT1, whereas the tetra- and pentapeptides were transported through the paracellular tight-junction pathway.
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Affiliation(s)
- Seong-Min Hong
- Division of Bioresources and Bioenvironmental Sciences, Faculty of Agriculture, Graduate School, Kyushu University , 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Mitsuru Tanaka
- Division of Bioresources and Bioenvironmental Sciences, Faculty of Agriculture, Graduate School, Kyushu University , 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Riho Koyanagi
- Division of Bioresources and Bioenvironmental Sciences, Faculty of Agriculture, Graduate School, Kyushu University , 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Weilin Shen
- Division of Bioresources and Bioenvironmental Sciences, Faculty of Agriculture, Graduate School, Kyushu University , 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Toshiro Matsui
- Division of Bioresources and Bioenvironmental Sciences, Faculty of Agriculture, Graduate School, Kyushu University , 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
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Augmentation of ferulic acid-induced vasorelaxation with aging and its structure importance in thoracic aorta of spontaneously hypertensive rats. Naunyn Schmiedebergs Arch Pharmacol 2015; 388:1113-7. [DOI: 10.1007/s00210-015-1171-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2015] [Accepted: 08/19/2015] [Indexed: 12/16/2022]
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Kobayashi Y, Kovacs-Nolan J, Matsui T, Mine Y. The Anti-atherosclerotic Dipeptide, Trp-His, Reduces Intestinal Inflammation through the Blockade of L-Type Ca2+ Channels. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:6041-6050. [PMID: 26079480 DOI: 10.1021/acs.jafc.5b01682] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Trp-His, the anti-atherosclerotic dipeptide, exerted an antiproliferative effect on vascular smooth muscle cells by L-type Ca(2+) channel blocker-like effect. The beneficial potential by the blockade of Ca(2+) channels on chronic intestinal inflammation, including inflammatory bowel disease (IBD), is unclear. Trp-His (100 or 250 mg/kg body weight/day) was administered for 14 days to BALB/c mice, and 5% dextran sodium sulfate (DSS) was administered to induce colitis in the last 7 days. Trp-His reduced DSS-induced typical colitis symptoms and cytokine expression in the colon. Trp-His inhibited interleukin (IL)-8 secretion in tumor necrosis factor (TNF)-α-stimulated HT-29 cells. The inhibitory effect of Trp-His, as well as that of Ca(2+) channel blockers, was impaired by the presence of Ca(2+) channel agonist Bay K 8644. The TNF-α-induced activation of mitogen-activated protein kinases (MAPKs) and IκBα were decreased by Trp-His. These results indicated that the anti-inflammatory effect of Trp-His may be involved in the blockade of L-type Ca(2+) channels.
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Affiliation(s)
- Yutaro Kobayashi
- †Department of Food Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada
- §Division of Bioresources and Bioenvironmental Sciences, Faculty of Agriculture, Graduate School, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | | | - Toshiro Matsui
- §Division of Bioresources and Bioenvironmental Sciences, Faculty of Agriculture, Graduate School, Kyushu University, Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
| | - Yoshinori Mine
- †Department of Food Science, University of Guelph, Guelph, Ontario N1G 2W1, Canada
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Tanaka M, Hong SM, Akiyama S, Hu QQ, Matsui T. Visualized absorption of anti-atherosclerotic dipeptide, Trp-His, in Sprague-Dawley rats by LC-MS and MALDI-MS imaging analyses. Mol Nutr Food Res 2015; 59:1541-9. [DOI: 10.1002/mnfr.201500075] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Revised: 03/19/2015] [Accepted: 03/20/2015] [Indexed: 12/13/2022]
Affiliation(s)
- Mitsuru Tanaka
- Faculty of Agriculture; Graduate School of Kyushu University; Fukuoka Japan
| | - Seong-Min Hong
- Faculty of Agriculture; Graduate School of Kyushu University; Fukuoka Japan
| | - Sayaka Akiyama
- Faculty of Agriculture; Graduate School of Kyushu University; Fukuoka Japan
| | - Qing-Qiang Hu
- Faculty of Agriculture; Graduate School of Kyushu University; Fukuoka Japan
| | - Toshiro Matsui
- Faculty of Agriculture; Graduate School of Kyushu University; Fukuoka Japan
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GUO J, SAIKI T, THANUTCHAPORN K, LIU W, SHIMURA A, MATSUI T. Elution Profile of Di-peptides on a Sulfonated Ethylstyrene–Divinylbenzene Copolymer Resin Column by High-performance Liquid Chromatography. ANAL SCI 2015; 31:45-50. [DOI: 10.2116/analsci.31.45] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Affiliation(s)
- Jian GUO
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School of Kyushu University
| | - Tomomi SAIKI
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School of Kyushu University
| | - Kumrungsee THANUTCHAPORN
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School of Kyushu University
| | - Wanying LIU
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School of Kyushu University
| | - Akihiro SHIMURA
- Separation Materials Laboratories, R&D Center, Kurosaki Plant, Mitsubishi Chemical Corp
| | - Toshiro MATSUI
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School of Kyushu University
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Soga M, Ohashi A, Taniguchi M, Matsui T, Tsuda T. The di-peptide Trp-His activates AMP-activated protein kinase and enhances glucose uptake independently of insulin in L6 myotubes. FEBS Open Bio 2014; 4:898-904. [PMID: 25383313 PMCID: PMC4223153 DOI: 10.1016/j.fob.2014.10.008] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2014] [Revised: 10/16/2014] [Accepted: 10/16/2014] [Indexed: 11/30/2022] Open
Abstract
WH activates AMPK, and enhances glucose uptake in L6 myotubes independently of insulin. WH induces ATP depletion and LKB1 phosphorylates AMPK. Activation of AMPK by WH is not due to Ca2+ dependent pathway. L6 myotubes have only one type of peptide transporter (PHT1; SLC15a4). WH activates AMPK via incorporation into cells from PHT1.
The di-peptide Trp-His (WH) has vasorelaxant and anti-atherosclerotic functions. We hypothesized that WH has multiple biological functions and may aid AMP-activated protein kinase (AMPK) activation and affect the glucose transport system in skeletal muscle. First, we examined whether WH or His-Trp (HW) can activate AMPKα. Treatment of L6 myotubes with WH or HW significantly increased phosphorylation of AMPKα. WH activated AMPK independently of insulin and significantly increased glucose uptake into L6 myotubes following translocation of glucose transporter 4 (Glut4) to the plasma membrane. This activation was induced by the LKB1 pathway but was independent of changes in intracellular Ca2+ levels and the Ca2+/calmodulin-dependent kinase pathway. L6 myotubes express only one type of oligopeptide transporter, peptide/histidine transporter 1 (PHT1, also known as SLC15a4), and WH is incorporated into cells and activates AMPKα following PHT1-mediated cell uptake. These findings indicate that (1) WH activates AMPK and insulin independently enhances glucose uptake following translocation of Glut4 to the plasma membrane, (2) activation of AMPKα by WH is mediated by the LKB1 pathway, without altering the Ca2+-dependent pathway, and (3) L6 myotubes express only one type of peptide transporter (PHT1; SLC15a4), which incorporates WH into cells to activate AMPKα.
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Key Words
- 2DG, 2-deoxy-d-glucose
- AICAR, 5-aminoimidazole-4-carboxamide ribonucleoside
- AMP-activated protein kinase
- AMPK, AMP-activated protein kinase
- CaMK, Ca2+/calmodulin-dependent kinase
- DMEM, Dulbecco’s modified Eagle’s medium
- Glucose transporter 4
- Glut, glucose transporter
- IRS-1, insulin receptor substrate-1
- KRH, Krebs–Ringer–HEPES buffer
- LKB1
- PHT1, peptide/histidine transporter 1
- PM, plasma membrene
- Peptide transporter
- TEA, triethanolamine
- Trp-His
- VDCC, voltage-dependent calcium channel
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Affiliation(s)
- Minoru Soga
- College of Bioscience and Biotechnology, Chubu University, Kasugai, Aichi 487-8501, Japan
| | - Ayaka Ohashi
- College of Bioscience and Biotechnology, Chubu University, Kasugai, Aichi 487-8501, Japan
| | - Megumi Taniguchi
- College of Bioscience and Biotechnology, Chubu University, Kasugai, Aichi 487-8501, Japan
| | - Toshiro Matsui
- Faculty of Agriculture, Graduate School of Kyushu University, Fukuoka 812-8581, Japan
| | - Takanori Tsuda
- College of Bioscience and Biotechnology, Chubu University, Kasugai, Aichi 487-8501, Japan
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Kumrungsee T, Saiki T, Akiyama S, Nakashima K, Tanaka M, Kobayashi Y, Matsui T. Inhibition of calcium-calmodulin complex formation by vasorelaxant basic dipeptides demonstrated by in vitro and in silico analyses. Biochim Biophys Acta Gen Subj 2014; 1840:3073-8. [DOI: 10.1016/j.bbagen.2014.07.020] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Revised: 07/24/2014] [Accepted: 07/28/2014] [Indexed: 12/01/2022]
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Improved Detection of Di-peptides by Liquid Chromatography-Tandem Mass Spectrometry with 2,4,6-Trinitrobenzene Sulfonate Conversion. Biosci Biotechnol Biochem 2014; 77:2094-9. [DOI: 10.1271/bbb.130448] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Fukuda T, Kuroda T, Kono M, Miyamoto T, Tanaka M, Matsui T. Attenuation of L-type Ca²⁺ channel expression and vasomotor response in the aorta with age in both Wistar-Kyoto and spontaneously hypertensive rats. PLoS One 2014; 9:e88975. [PMID: 24533163 PMCID: PMC3923070 DOI: 10.1371/journal.pone.0088975] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Accepted: 01/13/2014] [Indexed: 01/15/2023] Open
Abstract
Age-related vascular diseases are induced by vascular dysfunction, which involves changes in the vasomotor response. The voltage-dependent L-type calcium channel (VDCC) protein is involved in the regulation of vessel function (contraction/relaxation action). In the present study, we evaluated age-related vasomotor function and expression of the signal-related target proteins, including VDCC, using thoracic aorta from both 8- and 40-week old Wistar-Kyoto (WKY) and spontaneously hypertensive rats (SHR). In contraction experiments using aortic rings, vasomotor responses of both phenylephrine-induced contraction and acetylcholine-induced relaxation were significantly attenuated with age in SHR, whereas WKY did not lose activity with age. Contraction induced by angiotensin II was impaired only for the 40-week old SHR among all the rat groups tested, although enhanced AT1R/reduced AT2R expression with age was observed for both WKY and SHR. In contrast, a vasomotor responsiveness to Bay K 8644 (a VDCC agonist) at the initial contraction phase was significantly attenuated in both 40-week WKY and SHR with significant reduction of VDCC protein expression. The reduced VDCC expression in 40-week old rats significantly lowered the relaxation activity of VDCC blockers, such as verapamil and Trp-His, but did not affect that of nifedipine. Taken together, we provided the first evidence that aging caused a reduction of VDCC expression in rat aorta, irrespective of the rat strain, along with diminishment of the therapeutic potential of VDCC blockers.
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MESH Headings
- 3-Pyridinecarboxylic acid, 1,4-dihydro-2,6-dimethyl-5-nitro-4-(2-(trifluoromethyl)phenyl)-, Methyl ester/pharmacology
- Aging/metabolism
- Aging/physiology
- Angiotensin II/pharmacology
- Animals
- Aorta, Thoracic/drug effects
- Aorta, Thoracic/metabolism
- Aorta, Thoracic/physiology
- Calcium Channel Blockers/pharmacology
- Calcium Channels, L-Type/metabolism
- Gene Expression Regulation/drug effects
- Male
- Rats
- Rats, Inbred SHR
- Rats, Inbred WKY
- Vasoconstriction/drug effects
- Vasodilation/drug effects
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Affiliation(s)
- Toshihiko Fukuda
- The Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School of Kyushu University, Hakozaki, Higashi-ku, Fukuoka, Japan
| | - Takahiro Kuroda
- The Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School of Kyushu University, Hakozaki, Higashi-ku, Fukuoka, Japan
| | - Miki Kono
- The Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School of Kyushu University, Hakozaki, Higashi-ku, Fukuoka, Japan
| | - Takahisa Miyamoto
- The Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School of Kyushu University, Hakozaki, Higashi-ku, Fukuoka, Japan
| | - Mitsuru Tanaka
- The Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School of Kyushu University, Hakozaki, Higashi-ku, Fukuoka, Japan
| | - Toshiro Matsui
- The Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School of Kyushu University, Hakozaki, Higashi-ku, Fukuoka, Japan
- * E-mail:
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Han CH, Lin YS, Lee TL, Liang HJ, Hou WC. Asn-Trp dipeptides improve the oxidative stress and learning dysfunctions ind-galactose-induced BALB/c mice. Food Funct 2014; 5:2228-36. [DOI: 10.1039/c4fo00205a] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Asn-Trp (NW) interventions for 4 weeks can attenuate the oxidative stress and learning dysfunctions induced by dailyd-galactose subcutaneous injection for 8 weeks.
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Affiliation(s)
- Chuan-Hsiao Han
- School of Pharmacy
- Taipei Medical University
- Taipei, Taiwan
- Department of Health and Creative Vegetarian Science
- Fo Guang University
| | - Yin-Shiou Lin
- Graduate Institute of Pharmacognosy
- Taipei Medical University
- Taipei, Taiwan
| | - Tai-Lin Lee
- School of Pharmacy
- Taipei Medical University
- Taipei, Taiwan
| | - Hong-Jen Liang
- Department of Food Science
- Yuanpei University
- Hsinchu, Taiwan
- Traditional Herbal Medicine Research Center
- Taipei Medical University Hospital
| | - Wen-Chi Hou
- Graduate Institute of Pharmacognosy
- Taipei Medical University
- Taipei, Taiwan
- Traditional Herbal Medicine Research Center
- Taipei Medical University Hospital
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Kumrungsee T, Wang ZQ, Matsumura S, Saiki T, Tanaka M, Matsui T. Identification of peptides from soybean protein, glycinin, possessing suppression of intracellular Ca2+ concentration in vascular smooth muscle cells. Food Chem 2013; 152:218-24. [PMID: 24444929 DOI: 10.1016/j.foodchem.2013.11.143] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2013] [Revised: 10/17/2013] [Accepted: 11/25/2013] [Indexed: 10/25/2022]
Abstract
In this study, we challenged to identify vasoactive peptides in soybean 11S glycinin hydrolysate by thermolysin to regulate intracellular Ca(2+) concentration ([Ca(2+)]i) that can induce constrictive vascular tension. As a function of the inhibition of elevated [Ca(2+)]i by 10 μM angiotensin (Ang) II in vascular smooth muscle cells (VSMCs), eleven peptides were successfully identified from the hydrolysate, among which His-Gly-Lys exhibited the most potent inhibition against [Ca(2+)]i elevation in Ang II-stimulated VSMCs (inhibition at 300 μM: 46.5±8.0% vs. control). The biological capacity of His-Gly-Lys analogues as an [Ca(2+)]i inhibitor was also proven when His-Lys and His-Gly-Arg elicited a significant reduction in [Ca(2+)]i. In contrast, less reduction of [Ca(2+)]i by His-Gly-Ile and His-(3-methyl)-Gly-Lys indicated the importance of the imino proton in His, along with basic amino acids positioned at C-terminal for the effect.
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Affiliation(s)
- Thanutchaporn Kumrungsee
- Department of Bioscience and Biotechnology, Division of Bioresource and Bioenvironmental Sciences, Faculty of Agriculture, Graduated School of Kyushu University, 6-10-1 Hakozaki, Fukuoka 812-8581, Japan
| | - Zheng-Quan Wang
- Department of Bioscience and Biotechnology, Division of Bioresource and Bioenvironmental Sciences, Faculty of Agriculture, Graduated School of Kyushu University, 6-10-1 Hakozaki, Fukuoka 812-8581, Japan
| | - Shinya Matsumura
- Department of Bioscience and Biotechnology, Division of Bioresource and Bioenvironmental Sciences, Faculty of Agriculture, Graduated School of Kyushu University, 6-10-1 Hakozaki, Fukuoka 812-8581, Japan
| | - Tomomi Saiki
- Department of Bioscience and Biotechnology, Division of Bioresource and Bioenvironmental Sciences, Faculty of Agriculture, Graduated School of Kyushu University, 6-10-1 Hakozaki, Fukuoka 812-8581, Japan
| | - Mitsuru Tanaka
- Department of Bioscience and Biotechnology, Division of Bioresource and Bioenvironmental Sciences, Faculty of Agriculture, Graduated School of Kyushu University, 6-10-1 Hakozaki, Fukuoka 812-8581, Japan
| | - Toshiro Matsui
- Department of Bioscience and Biotechnology, Division of Bioresource and Bioenvironmental Sciences, Faculty of Agriculture, Graduated School of Kyushu University, 6-10-1 Hakozaki, Fukuoka 812-8581, Japan.
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Hong SM, Tanaka M, Yoshii S, Mine Y, Matsui T. Enhanced visualization of small peptides absorbed in rat small intestine by phytic-acid-aided matrix-assisted laser desorption/ionization-imaging mass spectrometry. Anal Chem 2013; 85:10033-9. [PMID: 24063774 DOI: 10.1021/ac402252j] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Enhanced visualization of small peptides absorbed through a rat intestinal membrane was achieved by matrix-assisted laser desorption/ionization time-of-flight imaging mass spectrometry (MALDI-IMS) with the aid of phytic acid as a matrix additive. Penetrants through intestinal peptide transporter 1, i.e., glycyl-sarcosine (Gly-Sar, 147.1 m/z) and antihypertensive dipeptide, Val-Tyr (281.2 m/z), were chosen for MALDI-IMS. The signal-to-noise (S/N) ratios of dipeptides Gly-Sar and Val-Tyr were seen to increase by 2.4- and 8.0-fold, respectively, when using a 2',4',6'-trihydroxyacetophenone (THAP) matrix containing 5.0 mM phytic acid, instead of the THAP matrix alone. Owing to the phytic-acid-aided MALDI-IMS method, Gly-Sar and Val-Tyr absorbed in the rat intestinal membrane were successfully visualized. The proposed imaging method also provided useful information on intestinal peptide absorption; to some extent, Val-Tyr was rapidly hydrolyzed to Tyr by peptidases located at the intestinal microvillus during the absorption process. In conclusion, the strongly acidic additive, phytic acid, is beneficial for enhancing the visualization of small peptides using MALDI-IMS, owing to the suppression of ionization-interfering salts in the tissue.
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Affiliation(s)
- Seong-Min Hong
- Division of Bioresources and Bioenvironmental Sciences, Faculty of Agriculture, Graduate School, Kyushu University , 6-10-1 Hakozaki, Fukuoka 812-8581, Japan
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35
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Takeda J, Park HY, Kunitake Y, Yoshiura K, Matsui T. Theaflavins, dimeric catechins, inhibit peptide transport across Caco-2 cell monolayers via down-regulation of AMP-activated protein kinase-mediated peptide transporter PEPT1. Food Chem 2013; 138:2140-5. [DOI: 10.1016/j.foodchem.2012.12.026] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2012] [Revised: 12/03/2012] [Accepted: 12/05/2012] [Indexed: 11/25/2022]
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36
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Han CH, Liu JC, Fang SU, Hou WC. Antioxidant activities of the synthesized thiol-contained peptides derived from computer-aided pepsin hydrolysis of yam tuber storage protein, dioscorin. Food Chem 2013; 138:923-30. [DOI: 10.1016/j.foodchem.2012.11.101] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2012] [Revised: 10/25/2012] [Accepted: 11/21/2012] [Indexed: 10/27/2022]
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37
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Tanaka M, Zhao J, Suyama A, Matsui T. Epigallocatechin gallate promotes the vasorelaxation power of the antiatherosclerotic dipeptide Trp-His in contracted rat aorta. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2012; 60:9048-9054. [PMID: 22900606 DOI: 10.1021/jf3010228] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The aim of this study was to demonstrate the enhancement of the vasorelaxation power of the antiatherosclerotic voltage-dependent L-type Ca(2+) channel (VDCC)-blocking peptide Trp-His by epigallocatechin gallate (EGCg). We found that 300 μM EGCg dramatically enhanced the magnitude of Trp-His-induced vasorelaxation by a factor of >6 (EC(50) of Trp-His: EGCg(-), 2.80 ± 0.05 mM; EGCg(+), 0.45 ± 0.04 mM) in phenylephrine-contracted rat aorta. The enhancing effect of EGCg was completely abolished in endothelium-removed aorta and high K(+)-contracted aorta. The enhancement of Trp-His-induced vasorelaxation by EGCg was significantly diminished by either N(G)-monomethyl-l-arginine acetate (NO synthase (NOS) inhibitor) or 1-H-[1,2,4]oxadiazolo[4,3]quinoxalin-1-one (soluble guanylyl cyclase inhibitor), together with the enhancement of NOS activity by EGCg. These results indicate that the enhancing effect of EGCg in Trp-His-induced vasorelaxation may be involved in the activation of NO/cGMP pathway.
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Affiliation(s)
- Mitsuru Tanaka
- Graduate School of Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan.
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38
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Tong LT, Fujimoto Y, Shimizu N, Tsukino M, Akasaka T, Kato Y, Iwamoto W, Shiratake S, Imaizumi K, Sato M. Rice α-globulin decreases serum cholesterol concentrations in rats fed a hypercholesterolemic diet and ameliorates atherosclerotic lesions in apolipoprotein E-deficient mice. Food Chem 2012; 132:194-200. [DOI: 10.1016/j.foodchem.2011.10.056] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2011] [Revised: 08/18/2011] [Accepted: 10/18/2011] [Indexed: 10/15/2022]
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39
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Kobayashi Y, Fukuda T, Tanaka M, Matsui T. The anti-atherosclerotic di-peptide, Trp-His, inhibits the phosphorylation of voltage-dependent L-type Ca(2+) channels in rat vascular smooth muscle cells. FEBS Open Bio 2012; 2:83-8. [PMID: 23650584 PMCID: PMC3642122 DOI: 10.1016/j.fob.2012.04.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2012] [Accepted: 04/12/2012] [Indexed: 11/04/2022] Open
Abstract
Trp-His is the only vasoactive di-peptide known to regulate intracellular Ca2+ ([Ca2+]i) and prevent the onset of atherosclerosis in mice. In this study, we showed that Trp-His reduced the [Ca2+]i elevation in phospholipase C-activated vascular smooth muscle cells (VSMCs), while a mixture of the corresponding constituent amino acids did not show significant reduction. Furthermore, Trp-His suppressed calmodulin-dependent kinase II (CaMK II) activity in angiotensin II-stimulated VSMCs, resulting in the inhibition of phosphorylation of voltage-dependent L-type Ca2+ channels (VDCC). Therefore, Trp-His potentially regulates the VDCC phosphorylation cascade through Ca2+-CaM/CaMK II.
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Key Words
- 2-APB, 2-aminoethoxydiphenyl borate
- AT2R, angiotensin type 2 receptor
- Ang II, angiotensin II
- CaMK II, calmodulin-dependent kinase II
- Calmodulin-dependent kinase II
- Di-peptide
- ER/SR, endoplasmic reticulum/sarcoplasmic reticulum
- IP3R, inositol 1,4,5-trisphosphate receptor
- Intracellular Ca2+
- L-type Ca2+ channel
- PLC, phospholipase C
- Phos-tag
- VDCC, voltage-dependent L-type Ca2+ channels
- VSMCs, vascular smooth muscle cells
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Affiliation(s)
- Yutaro Kobayashi
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School of Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
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40
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Nakamura YK, Dubick MA, Omaye ST. γ-Glutamylcysteine inhibits oxidative stress in human endothelial cells. Life Sci 2012; 90:116-21. [DOI: 10.1016/j.lfs.2011.10.016] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2011] [Revised: 10/03/2011] [Accepted: 10/16/2011] [Indexed: 01/28/2023]
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Application of 13C stable isotope labeling liquid chromatography-multiple reaction monitoring-tandem mass spectrometry method for determining intact absorption of bioactive dipeptides in rats. Anal Biochem 2011; 414:109-16. [PMID: 21377441 DOI: 10.1016/j.ab.2011.02.037] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2010] [Revised: 02/21/2011] [Accepted: 02/24/2011] [Indexed: 11/22/2022]
Abstract
The liquid chromatography-multiple reaction monitoring-tandem mass spectrometry (LC-MRM-MS/MS) method using (13)C stable isotope-labeled dipeptides was newly developed to simultaneously determine the absorption of three antihypertensive peptides (Val-Tyr, Met-Tyr, and Leu-Tyr) into blood of spontaneously hypertensive rats in one run-in assay. After extracting (13)C-labeled peptides in blood sample with a C(18) cartridge, the extract was applied to a (13)C monoisotopic transition LC-MRM-MS/MS system with D-Val-Tyr included as internal standard. An excellent separation of each dipeptide in LC was achieved at the elution condition of 5-100% methanol in 0.1% formic acid at a flow rate of 0.25 ml/min. The (13)C-labeled peptides ionized by electron spray were detected in the positive ion mode within 15 min. The established method showed high reproducibility with less than 10% coefficient of variation as well as high accuracy of more than 85%. After the administration of a mixture containing the three (13)C-labeled dipeptides to rats at each dose of 30 mg/kg, we could successfully determine the intact absorption of each (13)C-labeled peptide with the maximal absorption amount of 1.1 ng/ml plasma for Val-Tyr by the proposed LC-MRM-MS/MS method.
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42
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Wang Z, Watanabe S, Kobayashi Y, Tanaka M, Matsui T. Trp-His, a vasorelaxant di-peptide, can inhibit extracellular Ca2+ entry to rat vascular smooth muscle cells through blockade of dihydropyridine-like L-type Ca2+ channels. Peptides 2010; 31:2060-6. [PMID: 20688122 DOI: 10.1016/j.peptides.2010.07.013] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2010] [Revised: 07/26/2010] [Accepted: 07/26/2010] [Indexed: 10/19/2022]
Abstract
Our previous findings regarding the biological activities of small peptides revealed that a di-peptide, Trp-His (WH), could play a role in the prevention of vascular lesions, including cell proliferation and atherosclerosis. Its vasoprotective effects could be associated with suppression of the vasocontraction signaling cascade, but the underlying mechanism(s) remains obscure. In this study, we attempted to elucidate the vasoprotective mechanism of WH, in opposing the proliferation of rat vascular smooth muscle cells (VSMCs). In VSMCs from 8 week-old male Wistar rat thoracic aortae, WH evoked a significant dose-dependent anti-proliferation effect, without cytotoxicity. In mitogen-stimulated cell experiments, 300 μM WH inhibited cytosolic Ca(2+) elevation in VSMCs induced by 10 μM angiotensin II (Ang II). Furthermore, WH suppressed extracellular Ca(2+) entry into CaCl(2)-stimulated VSMCs. The biological capacity of WH as an intracellular Ca(2+) ([Ca(2+)](i)) suppressor was also proven when 50 μM Bay K8644 was used to enhance Ca(2+) entry via a voltage-dependent l-type Ca(2+) channel (VDCC) and 300 μM WH elicited a 23% reduction in [Ca(2+)](i). The absence of a reduction of the [Ca(2+)](i) by the mixture of tryptophan and histidine revealed the importance of the peptide backbone in the [Ca(2+)](i) reduction effect. Furthermore, the WH-induced [Ca(2+)](i) reduction was abolished by verapamil, but not by nifedipine, indicating that WH likely binds to an extracellular site of the VDCC at a site similar to that of the dihydropyridine type-Ca(2+) channel blockers.
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MESH Headings
- 3-Pyridinecarboxylic acid, 1,4-dihydro-2,6-dimethyl-5-nitro-4-(2-(trifluoromethyl)phenyl)-, Methyl ester/pharmacology
- Angiotensin II/pharmacology
- Animals
- Calcium Channel Blockers/pharmacology
- Calcium Channels, L-Type/drug effects
- Cell Proliferation/drug effects
- Dipeptides/antagonists & inhibitors
- Dipeptides/pharmacology
- Male
- Muscle, Smooth, Vascular/drug effects
- Muscle, Smooth, Vascular/metabolism
- Nifedipine/pharmacology
- Nimodipine/pharmacology
- Rats
- Rats, Wistar
- Verapamil/pharmacology
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Affiliation(s)
- Zhengquan Wang
- Department of Bioscience and Biotechnology, Faculty of Agriculture, Graduate School of Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan
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43
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Matsui T, Zhu XL, Shiraishi K, Ueki T, Noda Y, Matsumoto K. Antihypertensive Effect of Salt-Free Soy Sauce, a New Fermented Seasoning, in Spontaneously Hypertensive Rats. J Food Sci 2010; 75:H129-34. [DOI: 10.1111/j.1750-3841.2010.01599.x] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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