101
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Fu Y, Young JF, Løkke MM, Lametsch R, Aluko RE, Therkildsen M. Revalorisation of bovine collagen as a potential precursor of angiotensin I-converting enzyme (ACE) inhibitory peptides based on in silico and in vitro protein digestions. J Funct Foods 2016. [DOI: 10.1016/j.jff.2016.03.026] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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102
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Can milk proteins be a useful tool in the management of cardiometabolic health? An updated review of human intervention trials. Proc Nutr Soc 2016; 75:328-41. [PMID: 27150497 DOI: 10.1017/s0029665116000264] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The prevalence of cardiometabolic diseases is a significant public health burden worldwide. Emerging evidence supports the inverse association between greater dairy consumption and reduced risk of cardiometabolic diseases. Dairy proteins may have an important role in the favourable impact of dairy on human health such as blood pressure (BP), blood lipid and glucose control. The purpose of this review is to update and critically evaluate the evidence on the impacts of casein and whey protein in relation to metabolic function. Evidence from short-term clinical studies assessing postprandial responses to milk protein ingestion suggests benefits on vascular function independent of BP, as well as improvement in glycaemic homeostasis. Long-term interventions have been less conclusive, with some showing benefits and others indicating a lack of improvement in vascular function. During chronic consumption BP appears to be lowered and both dyslipidaemia and hyperglacaemia seem to be controlled. Limited number of trials investigated the effects of dairy proteins on oxidative stress and inflammation. Although the underlying mechanisms of milk proteins on cardiometabolic homeostasis remains to be elucidated, the most likely mechanism is to improve insulin resistance. The incorporation of meals enriched with dairy protein in the habitual diet may result in the beneficial effects on cardiometabolic health. Nevertheless, future well-designed, controlled studies are needed to investigate the relative effects of both casein and whey protein on BP, vascular function, glucose homeostasis and inflammation.
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103
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Nongonierma AB, FitzGerald RJ. Milk proteins as a source of tryptophan-containing bioactive peptides. Food Funct 2016; 6:2115-27. [PMID: 26027501 DOI: 10.1039/c5fo00407a] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Tryptophan (W) is an essential amino acid which is primarily required for protein synthesis. It also acts as a precursor of key biomolecules for human health (serotonin, melatonin, tryptamine, niacin, nicotinamide adenine dinucleotide (NAD), phosphorylated NAD (NADP), quinolinic acid, kynureric acid, etc.). Among dietary proteins, milk proteins are particularly rich in W. W residues within milk proteins may be released by proteolytic/peptidolytic enzymes either as a free amino acid or as part of peptide sequences. Different W-containing peptides originating from milk proteins have been shown in vitro to display a wide range of bioactivities such as angiotensin converting enzyme (ACE) inhibition along with antioxidant, antidiabetic and satiating related properties. Free W has been shown in certain instances to have an effect on cognition and the aforementioned bioactive properties. However, a higher bioactive potency has generally been observed with specific W-containing peptides compared to free W. Since W is thermolabile, the impact of processing on the stability of W-containing peptides needs to be considered. Milk protein-derived W-containing peptides may have significant potential as natural health promoting agents in humans.
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Affiliation(s)
- Alice B Nongonierma
- Department of Life Sciences and Food for Health Ireland (FHI), University of Limerick, Castletroy, Limerick, Ireland.
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104
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Nongonierma AB, FitzGerald RJ. Prospects for the management of type 2 diabetes using food protein-derived peptides with dipeptidyl peptidase IV (DPP-IV) inhibitory activity. Curr Opin Food Sci 2016. [DOI: 10.1016/j.cofs.2016.01.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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105
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Lafarga T, Rai DK, O'connor P, Hayes M. Generation of Bioactive Hydrolysates and Peptides from Bovine Hemoglobin with In Vitro
Renin, Angiotensin-I-Converting Enzyme and Dipeptidyl Peptidase-IV Inhibitory Activities. J Food Biochem 2016. [DOI: 10.1111/jfbc.12259] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tomas Lafarga
- Food BioSciences Department, Teagasc; The Irish Agricultural and Food Development Authority; Ashtown, Dublin 15 Dublin Ireland
| | - Dilip K. Rai
- Food BioSciences Department, Teagasc; The Irish Agricultural and Food Development Authority; Ashtown, Dublin 15 Dublin Ireland
| | - Paula O'connor
- Food BioSciences Department, Teagasc; The Irish Agricultural and Food Development Authority; Moorepark, Fermoy, Co. Cork Ireland
| | - Maria Hayes
- Food BioSciences Department, Teagasc; The Irish Agricultural and Food Development Authority; Ashtown, Dublin 15 Dublin Ireland
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106
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Identification of bioactive peptides from a papain hydrolysate of bovine serum albumin and assessment of an antihypertensive effect in spontaneously hypertensive rats. Food Res Int 2016. [DOI: 10.1016/j.foodres.2016.01.007] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
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107
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Lacroix IM, Meng G, Cheung IW, Li-Chan EC. Do whey protein-derived peptides have dual dipeptidyl-peptidase IV and angiotensin I-converting enzyme inhibitory activities? J Funct Foods 2016. [DOI: 10.1016/j.jff.2015.11.038] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
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108
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Dave LA, Hayes M, Moughan PJ, Rutherfurd SM. Novel Dipeptidyl Peptidase IV Inhibitory and Antioxidant Peptides Derived from Human Gastrointestinal Endogenous Proteins. Int J Pept Res Ther 2016. [DOI: 10.1007/s10989-016-9515-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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109
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Zhang Y, Chen R, Chen X, Zeng Z, Ma H, Chen S. Dipeptidyl Peptidase IV-Inhibitory Peptides Derived from Silver Carp (Hypophthalmichthys molitrix Val.) Proteins. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2016; 64:831-839. [PMID: 26758401 DOI: 10.1021/acs.jafc.5b05429] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The dipeptidyl peptidase IV (DPP-IV)-inhibitory bioactivity of silver carp protein (SCP) hydrolysates were investigated, and their containing efficacious DPP-IV-inhibitory peptides were explored by in silico hydrolysis analysis, peptide separation combined with liquid chromatography-tandem mass spectrometry (LC-MS/MS) identification, and chemical synthesis. SCP hydrolysates generated by six proteases all showed efficient DPP-IV-inhibitory activities, and Neutrase-generated hydrolysates had the greatest DPP-IV inhibition (IC50 of 1.12 mg/mL). In silico Neutrase hydrolysis revealed hundreds of fragments released from myosin, actin, and collagen of SCPs, which include different Pro-motif peptides but only three reported peptidic DPP-IV inhibitors with moderate or weak bioactivity. In addition, three new DPP-IV-inhibitory peptides were identified using LC-MS/MS; in particular, LPIIDI and APGPAGP showed high DPP-IV-inhibitory activity with IC50 of 105.44 and 229.14 μM, respectively, and behaved in competitive/non-competitive mixed-type DPP-IV inhibition mode. The results indicate that the SCP-derived DPP-IV-inhibitory peptides could be potential functional ingredients in the diabetic diet.
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Affiliation(s)
- Ying Zhang
- Key Laboratory of Functional Dairy, College of Food Science and Nutritional Engineering, China Agricultural University , Beijing 100083, People's Republic of China
| | - Ran Chen
- Key Laboratory of Functional Dairy, College of Food Science and Nutritional Engineering, China Agricultural University , Beijing 100083, People's Republic of China
| | - Xiling Chen
- Key Laboratory of Functional Dairy, College of Food Science and Nutritional Engineering, China Agricultural University , Beijing 100083, People's Republic of China
| | - Zhu Zeng
- Key Laboratory of Functional Dairy, College of Food Science and Nutritional Engineering, China Agricultural University , Beijing 100083, People's Republic of China
| | - Huiqin Ma
- College of Agriculture and Biotechnology, China Agricultural University , Beijing 100193, People's Republic of China
| | - Shangwu Chen
- Key Laboratory of Functional Dairy, College of Food Science and Nutritional Engineering, China Agricultural University , Beijing 100083, People's Republic of China
- Beijing Laboratory for Food Quality and Safety, College of Food Science and Nutritional Engineering, China Agricultural University , Beijing 100083, People's Republic of China
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110
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Comparison of dipeptidyl peptidase IV-inhibitory activity of peptides from bovine and caprine milk casein by in silico and in vitro analyses. Int Dairy J 2016. [DOI: 10.1016/j.idairyj.2015.10.001] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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111
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Recent trends in the analysis of bioactive peptides in milk and dairy products. Anal Bioanal Chem 2016; 408:2677-85. [PMID: 26800979 DOI: 10.1007/s00216-016-9303-8] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Revised: 12/14/2015] [Accepted: 01/04/2016] [Indexed: 02/07/2023]
Abstract
Food-derived constituents represent important sources of several classes of bioactive compounds. Among them peptides have gained great attention in the last two decades thanks to the scientific evidence of their beneficial effects on health in addition to their established nutritional value. Several functionalities for bioactive peptides have been described, including antioxidative, antihypertensive, anti-inflammatory, immunomodulatory, and antimicrobial activity. They are now considered as novel and potential dietary ingredients to promote human health, though in some cases they may also have detrimental effects on health. Bioactive peptides can be naturally occurring, produced in vitro by enzymatic hydrolysis, and formed in vivo during gastrointestinal digestion of proteins. Thus, the need to gain a better understanding of the positive health effects of food peptides has prompted the development of analytical strategies for their isolation, separation, and identification in complex food matrices. Dairy products and milk are potential sources of bioactive peptides: several of them possess extra-nutritional physiological functions that qualify them to be classified under the functional food label. In this trends article we briefly describe the state-of-the-art of peptidomics methods for the identification and discovery of bioactive peptides, also considering recent progress in their analysis and highlighting the difficulty in the analysis of short amino acid sequences and endogenous peptides.
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112
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Purification, identification and structural modelling of DPP-IV inhibiting peptides from barbel protein hydrolysate. J Chromatogr B Analyt Technol Biomed Life Sci 2015; 1008:260-269. [PMID: 26687732 DOI: 10.1016/j.jchromb.2015.11.054] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Revised: 11/14/2015] [Accepted: 11/29/2015] [Indexed: 11/23/2022]
Abstract
Inhibition of DPP-IV may improve glycemic control in diabetics by preventing the rapid breakdown and there by prolonging the physiological action of incretin hormones. Barbel muscle protein hydrolysate (BMPH) was noted to exhibit DPP-IV inhibitory activity, with an IC50 value of 1.94mg/mL. It was fractionated into five major fractions (FI-FV) by size exclusion chromatography using a Superdex peptide. The FIII fraction was noted to display the highest inhibitory activity, with an IC50 value of 1.23mg/mL, and was, therefore, further fractionated by RP-HPLC. Four major peptide sub-fractions were selected. The results revealed that the SF4 sub-fraction showed the highest DPP-IV inhibitory activity, with an IC50 value of 0.21mg/mL. This sub-fraction was submitted to RP-HPLC, ESI-MS, and ESI-MS/MS analyses. The findings indicated that SF4 consisted of two peptides (IC50=96μg/mL), namely PP1 and PP2, whose structures were identified as Trp-Ser-Gly (330Da) and Phe-Ser-Asp (349Da), respectively. This is the first report of these sequences from barbel proteins. The structural modelling through docking simulations results with DPP-IV showed that the Trp-Ser-Gly peptide bound to DPP-IV with high affinity. Overall, the results suggested that BMPH can be considered as a promising natural source of DPP-IV inhibitory peptides.
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113
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Analysis of proteins and potential bioactive peptides from tilapia (Oreochromis spp.) processing co-products using proteomic techniques coupled with BIOPEP database. J Funct Foods 2015. [DOI: 10.1016/j.jff.2015.09.065] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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114
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Fish skin gelatin hydrolysates as dipeptidyl peptidase IV inhibitors and glucagon-like peptide-1 stimulators improve glycaemic control in diabetic rats: A comparison between warm- and cold-water fish. J Funct Foods 2015. [DOI: 10.1016/j.jff.2015.09.037] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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115
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Wang F, Yu G, Zhang Y, Zhang B, Fan J. Dipeptidyl Peptidase IV Inhibitory Peptides Derived from Oat (Avena sativa L.), Buckwheat (Fagopyrum esculentum), and Highland Barley (Hordeum vulgare trifurcatum (L.) Trofim) Proteins. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:9543-9. [PMID: 26468909 DOI: 10.1021/acs.jafc.5b04016] [Citation(s) in RCA: 84] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Peptides released from oat, buckwheat, and highland barley proteins were examined for their in vitro inhibitory effects on dipeptidyl peptidase IV (DPP4), an enzyme that deactivates incretin hormones involved in insulin secretion. All of the hydrolysates exhibited DPP4 inhibitory activities, with IC50 values ranging from 0.13 mg/mL (oat glutelin alcalase digestion) to 8.15 mg/mL (highland barley albumin tryptic digestion). The lowest IC50 values in gastrointestinal, alcalase, and tryptic digestions were 0.99 mg/mL (oat flour), 0.13 mg/mL (oat glutelin), and 1.83 mg/mL (highland barley glutelin). In all, 35 peptides of more than seven residues were identified in the tryptic hydrolysates of oat globulin using liquid chromatography-mass spectroscopy. Peptides LQAFEPLR and EFLLAGNNK were synthesized and their DPP4 inhibitory activities determined. LQAFEPLR showed high in vitro DPP4 inhibitory activity with an IC50 value of 103.5 μM.
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Affiliation(s)
- Feng Wang
- Department of Food Science and Engineering, College of Biological Sciences and Technology, Beijing Key Laboratory of Forest Food Process and Safety, Beijing Forestry University , Beijing 100083, China
| | - Guoyong Yu
- Department of Food Science and Engineering, College of Biological Sciences and Technology, Beijing Key Laboratory of Forest Food Process and Safety, Beijing Forestry University , Beijing 100083, China
| | - Yanyan Zhang
- Food Science and Engineering College, Beijing University of Agriculture , Beijing 102206, China
| | - Bolin Zhang
- Department of Food Science and Engineering, College of Biological Sciences and Technology, Beijing Key Laboratory of Forest Food Process and Safety, Beijing Forestry University , Beijing 100083, China
| | - Junfeng Fan
- Department of Food Science and Engineering, College of Biological Sciences and Technology, Beijing Key Laboratory of Forest Food Process and Safety, Beijing Forestry University , Beijing 100083, China
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116
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Le Maux S, Nongonierma AB, Murray B, Kelly PM, FitzGerald RJ. Identification of short peptide sequences in the nanofiltration permeate of a bioactive whey protein hydrolysate. Food Res Int 2015. [DOI: 10.1016/j.foodres.2015.09.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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117
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Zhang Y, Chen R, Ma H, Chen S. Isolation and Identification of Dipeptidyl Peptidase IV-Inhibitory Peptides from Trypsin/Chymotrypsin-Treated Goat Milk Casein Hydrolysates by 2D-TLC and LC-MS/MS. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:8819-8828. [PMID: 26323964 DOI: 10.1021/acs.jafc.5b03062] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
New dipeptidyl peptidase IV (DPP-IV)-inhibitory peptides from trypsin/chymotrypsin-treated goat milk casein hydrolysates were isolated and identified by two-dimensional silica thin-layer chromatography (2D-TLC) combined to nano LC-MS/MS. 2D-TLC with chloroform/methanol/25% ammonia (2:2:1) and n-butanol/acetic acid/water (4:1:1) as the first- and second-dimension eluents, respectively, in analytical and semipreparative scales, was set up and verified by reversed-phase high-performance liquid chromatography (RP-HPLC) to be feasible and efficient to separate the hydrolysates. Five new DPP-IV-inhibitory peptides, four relatively large oligopeptides (MHQPPQPL, SPTVMFPPQSVL, VMFPPQSVL, and INNQFLPYPY), and AWPQYL were identified, and INNQFLPYPY showed a notable IC50 value of 40.08 μM as an uncompetitive inhibitor. Interactive effects on DPP-IV inhibition were also observed among separated fractions and pure synthetic peptide mixtures with concentration-dependent activity. The study gives new insights into goat casein hydrolysates with identified DPP-IV-inhibitory peptides efficiently isolated by 2D-TLC, which provides a simple and cost-efficient separation process and is compatible with liquid chromatography-tandem mass spectrometry (LC-MS/MS) identification.
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Affiliation(s)
- Ying Zhang
- Key Laboratory of Functional Dairy, College of Food Science and Nutritional Engineering, China Agricultural University , Beijing 100083, P. R. China
| | - Ran Chen
- Key Laboratory of Functional Dairy, College of Food Science and Nutritional Engineering, China Agricultural University , Beijing 100083, P. R. China
| | - Huiqin Ma
- College of Agriculture and Biotechnology, China Agricultural University , Beijing 100193, P. R. China
| | - Shangwu Chen
- Key Laboratory of Functional Dairy, College of Food Science and Nutritional Engineering, China Agricultural University , Beijing 100083, P. R. China
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118
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Lafarga T, Rai DK, O'Connor P, Hayes M. A Bovine Fibrinogen-Enriched Fraction as a Source of Peptides with in Vitro Renin and Angiotensin-I-Converting Enzyme Inhibitory Activities. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2015; 63:8676-8684. [PMID: 26373334 DOI: 10.1021/acs.jafc.5b03167] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Bovine fibrinogen is currently used in the food industry as a binding agent in restructured meat products. However, this protein is underused as a source of bioactive peptides. In this study, a number of novel angiotensin-I-converting enzyme (ACE-I) and renin inhibitory peptides were identified and enriched from a bovine fibrinogen fraction. Fibrinogen was isolated and enriched from bovine blood and hydrolyzed with the food-grade enzyme papain, which was selected for use using in silico analysis. The generated hydrolysate was subjected to ultrafiltration and its peptide profile characterized by liquid chromatography-tandem mass spectrometry. A number of peptides were identified and chemically synthesized to confirm their bioactivity in vitro. Identified peptides included the multifunctional tripeptide SLR, corresponding to f(35-37) of the β-chain of bovine fibrinogen with ACE-I and renin IC50 values of 0.17 and 7.2 mM, respectively. Moreover, the resistance of identified peptides to gastrointestinal degradation and their bitterness were predicted using in silico methods.
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Affiliation(s)
- Tomas Lafarga
- Teagasc, The Irish Agricultural and Food Development Authority, Food BioSciences Department, Ashtown, Dublin 15, Dublin, Ireland
| | - Dilip K Rai
- Teagasc, The Irish Agricultural and Food Development Authority, Food BioSciences Department, Ashtown, Dublin 15, Dublin, Ireland
| | - Paula O'Connor
- Teagasc, The Irish Agricultural and Food Development Authority, Food BioSciences Department, Moorepark, Fermoy, Co. Cork, Ireland
| | - Maria Hayes
- Teagasc, The Irish Agricultural and Food Development Authority, Food BioSciences Department, Ashtown, Dublin 15, Dublin, Ireland
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119
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Jin Y, Yan J, Yu Y, Qi Y. Screening and identification of DPP-IV inhibitory peptides from deer skin hydrolysates by an integrated approach of LC–MS/MS and in silico analysis. J Funct Foods 2015. [DOI: 10.1016/j.jff.2015.07.015] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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120
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Nongonierma AB, Le Maux S, Dubrulle C, Barre C, FitzGerald RJ. Quinoa (Chenopodium quinoa Willd.) protein hydrolysates with in vitro dipeptidyl peptidase IV (DPP-IV) inhibitory and antioxidant properties. J Cereal Sci 2015. [DOI: 10.1016/j.jcs.2015.07.004] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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121
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Jao CL, Hung CC, Tung YS, Lin PY, Chen MC, Hsu KC. The development of bioactive peptides from dietary proteins as a dipeptidyl peptidase IV inhibitor for the management of type 2 diabetes. Biomedicine (Taipei) 2015; 5:14. [PMID: 26267061 PMCID: PMC4534476 DOI: 10.7603/s40681-015-0014-9] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Accepted: 06/25/2015] [Indexed: 12/16/2022] Open
Abstract
One of the new approaches to the management of type 2 diabetes mellitus (T2DM) consists of orally administered dipeptidyl peptidase-IV (DPP-IV) inhibitors. These synthetic drug inhibitors are reported to have some side effects and that subsequently limits their applications. There is a growing interest to develop natural DPP-IV inhibitors that will be potent without undesirable side effects. Many in vitro and some in vivo studies have highlighted the potential of food-derived peptides functioning as effective DPPIV inhibitors. Bioactive peptides within original food-derived proteins are inactive but can be activated by being released during food processing (by enzymatic hydrolysis or fermentation) or during gastrointestinal digestion. Hence, the utilization of computer-aided techniques as screening tools may be helpful in predicting the potential of food proteins as precursors of DPP-IV inhibitory peptides. This paper reviews the current literature on DPP-IV inhibitory peptides, focusing on their in vitro activity and in vivo antidiabetic effects. In addition, the feasibility of various in silico approaches is also summarized in this review.
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Affiliation(s)
- Chia-Ling Jao
- Department of Food and Beverage Management, Tung-Fang Design University, No. 110, Tung-Fang Road, 829, Kaohsiung, Taiwan
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122
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Food protein-derived bioactive peptides in management of type 2 diabetes. Eur J Nutr 2015; 54:863-80. [PMID: 26154777 DOI: 10.1007/s00394-015-0974-2] [Citation(s) in RCA: 118] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 06/29/2015] [Indexed: 12/20/2022]
Abstract
BACKGROUND Type 2 diabetes (T2D), one of the major common human health problems, is growing at an alarming rate around the globe. Alpha-glucosidase and dipeptidyl peptidase IV (DPP-IV) enzymes play a significant role in development of T2D. Hence, reduction or inhibition of their activity can be one of the important strategies in management of T2D. Studies in the field of bioactive peptides have shown that dietary proteins could be natural source of alpha-glucosidase and DPP-IV inhibitory peptides. PURPOSE The purpose of this review is to provide an overview of food protein-derived peptides as potential inhibitors of alpha-glucosidase and DPP-IV with major focus on milk proteins. METHODS Efforts have been made to review the available information in literature on the relationship between food protein-derived peptides and T2D. This review summarizes the current data on alpha-glucosidase and dipeptidyl peptidase IV inhibitory bioactive peptides derived from proteins and examines the potential value of these peptides in the treatment and prevention of T2D. In addition, the proposed modes of inhibition of peptide inhibitors are also discussed. RESULTS Studies revealed that milk and other food proteins-derived bioactive peptides play a vital role in controlling T2D through several mechanisms, such as the satiety response, regulation of incretin hormones, insulinemia levels, and reducing the activity of carbohydrate degrading digestive enzymes. CONCLUSIONS The bioactive peptides could be used in prevention and management of T2D through functional foods or nutraceutical supplements. Further clinical trials are necessary to validate the findings of in vitro studies and to confirm the efficiency of these peptides for applications.
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123
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Brandelli A, Daroit DJ, Corrêa APF. Whey as a source of peptides with remarkable biological activities. Food Res Int 2015. [DOI: 10.1016/j.foodres.2015.01.016] [Citation(s) in RCA: 116] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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124
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Milk proteins, peptides, and oligosaccharides: effects against the 21st century disorders. BIOMED RESEARCH INTERNATIONAL 2015; 2015:146840. [PMID: 25789308 PMCID: PMC4350585 DOI: 10.1155/2015/146840] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Accepted: 12/21/2014] [Indexed: 12/17/2022]
Abstract
Milk is the most complete food for mammals, as it supplies all the energy and nutrients needed for the proper growth and development of the neonate. Milk is a source of many bioactive components, which not only help meeting the nutritional requirements of the consumers, but also play a relevant role in preventing various disorders. Milk-derived proteins and peptides have the potential to act as coadjuvants in conventional therapies, addressing cardiovascular diseases, metabolic disorders, intestinal health, and chemopreventive properties. In addition to being a source of proteins and peptides, milk contains complex oligosaccharides that possess important functions related to the newborn's development and health. Some of the health benefits attributed to milk oligosaccharides include prebiotic probifidogenic effects, antiadherence of pathogenic bacteria, and immunomodulation. This review focuses on recent findings demonstrating the biological activities of milk peptides, proteins, and oligosaccharides towards the prevention of diseases of the 21st century. Processing challenges hindering large-scale production and commercialization of those bioactive compounds have been also addressed.
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125
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Bioactive peptides and protein hydrolysates: research trends and challenges for application as nutraceuticals and functional food ingredients. Curr Opin Food Sci 2015. [DOI: 10.1016/j.cofs.2014.09.005] [Citation(s) in RCA: 310] [Impact Index Per Article: 34.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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126
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Samperi R, Capriotti AL, Cavaliere C, Colapicchioni V, Chiozzi RZ, Laganà A. Food Proteins and Peptides. ADVANCED MASS SPECTROMETRY FOR FOOD SAFETY AND QUALITY 2015. [DOI: 10.1016/b978-0-444-63340-8.00006-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
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127
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Zambrowicz A, Eckert E, Pokora M, Bobak Ł, Dąbrowska A, Szołtysik M, Trziszka T, Chrzanowska J. Antioxidant and antidiabetic activities of peptides isolated from a hydrolysate of an egg-yolk protein by-product prepared with a proteinase from Asian pumpkin (Cucurbita ficifolia). RSC Adv 2015. [DOI: 10.1039/c4ra12943a] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Peptides isolated from egg yolk protein by-product hydrolysate prepared with unconventional proteinase from Cucurbita ficifolia exert multiple biological activities.
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Affiliation(s)
- Aleksandra Zambrowicz
- Department of Animal Products Technology and Quality Management
- Wroclaw University of Environmental and Life Sciences
- Wrocław
- Poland
| | - Ewelina Eckert
- Department of Animal Products Technology and Quality Management
- Wroclaw University of Environmental and Life Sciences
- Wrocław
- Poland
| | - Marta Pokora
- Department of Animal Products Technology and Quality Management
- Wroclaw University of Environmental and Life Sciences
- Wrocław
- Poland
| | - Łukasz Bobak
- Department of Animal Products Technology and Quality Management
- Wroclaw University of Environmental and Life Sciences
- Wrocław
- Poland
| | - Anna Dąbrowska
- Department of Animal Products Technology and Quality Management
- Wroclaw University of Environmental and Life Sciences
- Wrocław
- Poland
| | - Marek Szołtysik
- Department of Animal Products Technology and Quality Management
- Wroclaw University of Environmental and Life Sciences
- Wrocław
- Poland
| | - Tadeusz Trziszka
- Department of Animal Products Technology and Quality Management
- Wroclaw University of Environmental and Life Sciences
- Wrocław
- Poland
| | - Józefa Chrzanowska
- Department of Animal Products Technology and Quality Management
- Wroclaw University of Environmental and Life Sciences
- Wrocław
- Poland
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128
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Khaket TP, Redhu D, Dhanda S, Singh J. In SilicoEvaluation of Potential DPP-III Inhibitor Precursors from Dietary Proteins. INTERNATIONAL JOURNAL OF FOOD PROPERTIES 2014. [DOI: 10.1080/10942912.2013.787626] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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129
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Lan VTT, Ito K, Ohno M, Motoyama T, Ito S, Kawarasaki Y. Analyzing a dipeptide library to identify human dipeptidyl peptidase IV inhibitor. Food Chem 2014; 175:66-73. [PMID: 25577052 DOI: 10.1016/j.foodchem.2014.11.131] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2014] [Revised: 11/21/2014] [Accepted: 11/23/2014] [Indexed: 12/27/2022]
Abstract
Human dipeptidyl peptidase IV (hDPPIV) inhibitors provide an effective strategy for the treatment of type 2 diabetes. Because certain peptides are known to act as hDPPIV inhibitors, a dataset of possible peptides with their inhibition intensities will facilitate the development of functional food for type 2 diabetes. In this study, we examined a total of 337 dipeptides with respect to their hDPPIV inhibitory effects. Amino acid residues at N-termini dominated their inhibition intensities. Particularly highly inhibitory dipeptides discovered included the following novel dipeptides: Thr-His, Asn-His, Val-Leu, Met-Leu, and Met-Met. Using our dataset, prime candidates contributing to the hDPPIV inhibitory effect of soy protein hydrolyzates were successfully identified. Possible dietary proteins potentially able to produce particularly highly hDPPIV inhibitory peptides are also discussed on the basis of the dataset.
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Affiliation(s)
- Vu Thi Tuyet Lan
- Department of Food and Nutritional Sciences, Graduate School of Integrated Pharmaceutical and Nutritional Sciences, University of Shizuoka, Yada 52-1, Suruga-ku, Shizuoka 422-8526, Japan.
| | - Keisuke Ito
- Department of Food and Nutritional Sciences, Graduate School of Integrated Pharmaceutical and Nutritional Sciences, University of Shizuoka, Yada 52-1, Suruga-ku, Shizuoka 422-8526, Japan; School of Food and Nutritional Sciences, University of Shizuoka, Yada 52-1, Suruga-ku, Shizuoka 422-8526, Japan.
| | - Masumi Ohno
- School of Food and Nutritional Sciences, University of Shizuoka, Yada 52-1, Suruga-ku, Shizuoka 422-8526, Japan.
| | - Takayasu Motoyama
- Food Science Research Institute, Research & Development HQ, Fuji Oil Co., Ltd., Kinunodai 4-3, Tsukubamirai, Ibaraki 300-2497, Japan.
| | - Sohei Ito
- Department of Food and Nutritional Sciences, Graduate School of Integrated Pharmaceutical and Nutritional Sciences, University of Shizuoka, Yada 52-1, Suruga-ku, Shizuoka 422-8526, Japan; School of Food and Nutritional Sciences, University of Shizuoka, Yada 52-1, Suruga-ku, Shizuoka 422-8526, Japan.
| | - Yasuaki Kawarasaki
- Department of Food and Nutritional Sciences, Graduate School of Integrated Pharmaceutical and Nutritional Sciences, University of Shizuoka, Yada 52-1, Suruga-ku, Shizuoka 422-8526, Japan; School of Food and Nutritional Sciences, University of Shizuoka, Yada 52-1, Suruga-ku, Shizuoka 422-8526, Japan.
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130
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Zambrowicz A, Pokora M, Setner B, Dąbrowska A, Szołtysik M, Babij K, Szewczuk Z, Trziszka T, Lubec G, Chrzanowska J. Multifunctional peptides derived from an egg yolk protein hydrolysate: isolation and characterization. Amino Acids 2014; 47:369-80. [PMID: 25408464 PMCID: PMC4302234 DOI: 10.1007/s00726-014-1869-x] [Citation(s) in RCA: 107] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 11/04/2014] [Indexed: 11/29/2022]
Abstract
An egg yolk protein by-product following ethanol extraction of phospholipids (YP) was hydrolyzed with pepsin to produce and identify novel peptides that revealed antioxidant, ACE inhibitory and antidiabetic (α-glucosidase and DPP-IV inhibitory) activities. The peptic hydrolysate of YP was fractionated by ion-exchange chromatography and reversed-phase high-pressure liquid chromatography. Isolated peptides were identified using mass spectrometry (MALDI-ToF) and the Mascot Search Results database. Four peptides of MW ranging from 1,210.62 to 1,677.88 Da corresponded to the fragments of Apolipoprotein B (YINQMPQKSRE; YINQMPQKSREA), Vitellogenin-2 (VTGRFAGHPAAQ) and Apovitellenin-1 (YIEAVNKVSPRAGQF). These peptides were chemically synthesized and showed antioxidant, ACE inhibitory or/and antidiabetic activities. Peptide YIEAVNKVSPRAGQF exerted the strongest ACE inhibitory activity, with IC50 = 9.4 µg/mL. The peptide YINQMPQKSRE showed the strongest DPPH free radical scavenging and DPP-IV inhibitory activities and its ACE inhibitory activity (IC50) reached 10.1 µg/mL. The peptide VTGRFAGHPAAQ revealed the highest α-glucosidase inhibitory activity (IC50 = 365.4 µg/mL). A novel nutraceutical effect for peptides from an egg yolk hydrolysate was shown.
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Affiliation(s)
- Aleksandra Zambrowicz
- Department of Animal Products Technology and Quality Management, Faculty of Food Science, Wrocław University of Environmental and Life Sciences, Chełmońskiego 37/41, 51-630, Wrocław, Poland,
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131
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Peptide array on cellulose support--a screening tool to identify peptides with dipeptidyl-peptidase IV inhibitory activity within the sequence of α-lactalbumin. Int J Mol Sci 2014; 15:20846-58. [PMID: 25402645 PMCID: PMC4264199 DOI: 10.3390/ijms151120846] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2014] [Revised: 10/20/2014] [Accepted: 10/30/2014] [Indexed: 01/10/2023] Open
Abstract
The inhibition of the enzyme dipeptidyl-peptidase IV (DPP-IV) is an effective pharmacotherapeutic approach for the management of type 2 diabetes. Recent findings have suggested that dietary proteins, including bovine α-lactalbumin, could be precursors of peptides able to inhibit DPP-IV. However, information on the location of active peptide sequences within the proteins is far from being comprehensive. Moreover, the traditional approach to identify bioactive peptides from foods can be tedious and long. Therefore, the objective of this study was to use peptide arrays to screen α-lactalbumin-derived peptides for their interaction with DPP-IV. Deca-peptides spanning the entire α-lactalbumin sequence, with a frame shift of 1 amino acid between successive sequences, were synthesized on cellulose membranes using “SPOT” technology, and their binding to and inhibition of DPP-IV was studied. Among the 114 α-lactalbumin-derived decamers investigated, the peptides 60WCKDDQNPHS69 (αKi = 76 µM), 105LAHKALCSEK114 (Ki = 217 µM) and 110LCSEKLDQWL119 (Ki = 217 µM) were among the strongest DPP-IV inhibitors. While the SPOT- and traditionally-synthesized peptides showed consistent trends in DPP-IV inhibitory activity, the cellulose-bound peptides’ binding behavior was not correlated to their ability to inhibit the enzyme. This research showed, for the first time, that peptide arrays are useful screening tools to identify DPP-IV inhibitory peptides from dietary proteins.
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132
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Huang SL, Hung CC, Jao CL, Tung YS, Hsu KC. Porcine skin gelatin hydrolysate as a dipeptidyl peptidase IV inhibitor improves glycemic control in streptozotocin-induced diabetic rats. J Funct Foods 2014. [DOI: 10.1016/j.jff.2014.09.010] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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133
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Hernández-Ledesma B, García-Nebot MJ, Fernández-Tomé S, Amigo L, Recio I. Dairy protein hydrolysates: Peptides for health benefits. Int Dairy J 2014. [DOI: 10.1016/j.idairyj.2013.11.004] [Citation(s) in RCA: 139] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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134
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Harnedy PA, O'Keeffe MB, FitzGerald RJ. Purification and identification of dipeptidyl peptidase (DPP) IV inhibitory peptides from the macroalga Palmaria palmata. Food Chem 2014; 172:400-6. [PMID: 25442570 DOI: 10.1016/j.foodchem.2014.09.083] [Citation(s) in RCA: 108] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 08/01/2014] [Accepted: 09/16/2014] [Indexed: 01/05/2023]
Abstract
Dipeptidyl peptidase (DPP)-IV inhibitory peptides were purified and identified from an aqueous Palmaria palmata protein extract hydrolysed with Corolase PP. The hydrolysate was fractionated by solid phase extraction (SPE) using a C18 matrix followed by semi-preparative reverse phase-high performance liquid chromatography (SP RP-HPLC). IC50 values of 1.47 ± 0.09, 0.54 ± 0.03 and 0.36 ± 0.03 mg/ml were obtained for the hydrolysate, the 25%--acetonitrile (ACN) SPE fraction and the most active SP RP-HPLC peptide fraction (SP RP-HPLC 25_F28), respectively. Thirteen peptide sequences were identified following UPLC-ESI MS/MS analysis of SP RP-HPLC 25_F28. Three novel DPP-IV inhibitory peptides, Ile-Leu-Ala-Pro, Leu-Leu-Ala-Pro and Met-Ala-Gly-Val-Asp-His-Ile, with IC50 values in the range 43-159 μM were identified. The results indicate that P. palmata derived peptides may have potential as functional food ingredients in the prevention and management of type 2 diabetes.
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135
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Lafarga T, O'Connor P, Hayes M. Identification of novel dipeptidyl peptidase-IV and angiotensin-I-converting enzyme inhibitory peptides from meat proteins using in silico analysis. Peptides 2014; 59:53-62. [PMID: 25020248 DOI: 10.1016/j.peptides.2014.07.005] [Citation(s) in RCA: 101] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Revised: 07/03/2014] [Accepted: 07/03/2014] [Indexed: 11/16/2022]
Abstract
Angiotensin-I-converting enzyme (ACE-I, EC 3.4.15.1), renin (EC 3.4.23.15), and dipeptidyl peptidase-IV (DPP-IV, EC 3.4.14.5) play key roles in the control of hypertension and the development of type-2 diabetes and other diseases associated with metabolic syndrome. The aim of this work was to utilize known in silico methodologies, peptide databases and software including ProtParam (http://web.expasy.org/protparam/), Basic Local Alignment Tool (BLAST), ExPASy PeptideCutter (http://web.expasy.org/peptide_cutter/) and BIOPEP (http://www.uwm.edu.pl/biochemia/index.php/pl/biopep) to assess the release of potentially bioactive DPP-IV, renin and ACE-I inhibitory peptides from bovine and porcine meat proteins including hemoglobin, collagen and serum albumin. These proteins were chosen as they are found commonly in meat by-products such as bone, blood and low-value meat cuts. In addition, the bioactivities of identified peptides were confirmed using chemical synthesis and in vitro bioassays. The concentration of peptide required to inhibit the activity of ACE-I and DPP-IV by 50% was determined for selected, active peptides. Novel ACE-I and DPP-IV inhibitory peptides were identified in this study using both in silico analysis and a literature search to streamline enzyme selection for peptide production. These novel peptides included the ACE-I inhibitory tri-peptide Ile-Ile-Tyr and the DPP-IV inhibitory tri-peptide Pro-Pro-Leu corresponding to sequences f (182-184) and f (326-328) of both porcine and bovine serum albumin which can be released following hydrolysis with the enzymes papain and pepsin, respectively. This work demonstrates that meat proteins are a suitable resource for the generation of bioactive peptides and further demonstrates the usefulness of in silico methodologies to streamline identification and generation of bioactive peptides.
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Affiliation(s)
- Tomas Lafarga
- Teagasc, The Irish Agricultural and Food Development Authority, Food BioSciences Department, Ashtown, Dublin 15, Ireland
| | - Paula O'Connor
- Teagasc, The Irish Agricultural and Food Development Authority, Food BioSciences Department, Moorepark, Fermoy, Cork, Ireland
| | - Maria Hayes
- Teagasc, The Irish Agricultural and Food Development Authority, Food BioSciences Department, Ashtown, Dublin 15, Ireland.
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136
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137
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Power O, Fernández A, Norris R, Riera F, FitzGerald R. Selective enrichment of bioactive properties during ultrafiltration of a tryptic digest of β-lactoglobulin. J Funct Foods 2014. [DOI: 10.1016/j.jff.2014.04.002] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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138
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Nongonierma AB, Mooney C, Shields DC, FitzGerald RJ. In silico approaches to predict the potential of milk protein-derived peptides as dipeptidyl peptidase IV (DPP-IV) inhibitors. Peptides 2014; 57:43-51. [PMID: 24793774 DOI: 10.1016/j.peptides.2014.04.018] [Citation(s) in RCA: 91] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2014] [Revised: 04/23/2014] [Accepted: 04/23/2014] [Indexed: 12/28/2022]
Abstract
Molecular docking of a library of all 8000 possible tripeptides to the active site of DPP-IV was used to determine their binding potential. A number of tripeptides were selected for experimental testing, however, there was no direct correlation between the Vina score and their in vitro DPP-IV inhibitory properties. While Trp-Trp-Trp, the peptide with the best docking score, was a moderate DPP-IV inhibitor (IC50 216μM), Lineweaver and Burk analysis revealed its action to be non-competitive. This suggested that it may not bind to the active site of DPP-IV as assumed in the docking prediction. Furthermore, there was no significant link between DPP-IV inhibition and the physicochemical properties of the peptides (molecular mass, hydrophobicity, hydrophobic moment (μH), isoelectric point (pI) and charge). LIGPLOTs indicated that competitive inhibitory peptides were predicted to have both hydrophobic and hydrogen bond interactions with the active site of DPP-IV. DPP-IV inhibitory peptides generally had a hydrophobic or aromatic amino acid at the N-terminus, preferentially a Trp for non-competitive inhibitors and a broader range of residues for competitive inhibitors (Ile, Leu, Val, Phe, Trp or Tyr). Two of the potent DPP-IV inhibitors, Ile-Pro-Ile and Trp-Pro (IC50 values of 3.5 and 44.2μM, respectively), were predicted to be gastrointestinally/intestinally stable. This work highlights the needs to test the assumptions (i.e. competitive binding) of any integrated strategy of computational and experimental screening, in optimizing screening. Future strategies targeting allosteric mechanisms may need to rely more on structure-activity relationship modeling, rather than on docking, in computationally selecting peptides for screening.
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Affiliation(s)
- Alice B Nongonierma
- Department of Life Sciences and Food for Health Ireland (FHI), University of Limerick, Castletroy, Limerick, Ireland
| | - Catherine Mooney
- School of Medicine and Medical Science, Complex and Adaptive Systems Laboratory and Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland
| | - Denis C Shields
- School of Medicine and Medical Science, Complex and Adaptive Systems Laboratory and Conway Institute of Biomolecular and Biomedical Research, University College Dublin, Belfield, Dublin 4, Ireland; Food for Health Ireland (FHI), University College Dublin, Belfield, Dublin 4, Ireland.
| | - Richard J FitzGerald
- Department of Life Sciences and Food for Health Ireland (FHI), University of Limerick, Castletroy, Limerick, Ireland.
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139
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Nongonierma AB, FitzGerald RJ. An in silico model to predict the potential of dietary proteins as sources of dipeptidyl peptidase IV (DPP-IV) inhibitory peptides. Food Chem 2014; 165:489-98. [PMID: 25038703 DOI: 10.1016/j.foodchem.2014.05.090] [Citation(s) in RCA: 113] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Revised: 04/16/2014] [Accepted: 05/15/2014] [Indexed: 01/01/2023]
Abstract
An in silico approach was developed to predict the potential of 72 dietary proteins to act as a source of dipeptidyl peptidase IV (DPP-IV) inhibitory peptides. The model takes 68 DPP-IV inhibitory peptides (having an IC50 value <2000 μM) and the specific contribution of their amino acids into account. Bovine α-lactalbumin (α-La) and κ-casein (CN) displayed the highest protein coverage (PC, 43.9%) and potency index (PI, 17.9 10(-6) μM(-1)g(-1)), respectively for DPP-IV inhibitory peptides. Sequence alignment of 39 DPP-IV inhibitory peptides having IC50's<200 μM revealed the frequent occurrence of Trp at the N-terminus and Pro at position 2. Canola, chicken egg, oat and wheat were identified as potential sources of DPP-IV inhibitory peptides. In silico approaches may assist in the selection of food proteins for the enzymatic release of DPP-IV inhibitory peptides. The results are relevant to the generation of biofunctional ingredients for glycaemic management.
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Affiliation(s)
- Alice B Nongonierma
- Department of Life Sciences and Food for Health Ireland (FHI), University of Limerick, Limerick, Ireland
| | - Richard J FitzGerald
- Department of Life Sciences and Food for Health Ireland (FHI), University of Limerick, Limerick, Ireland.
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140
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Lacroix IME, Li-Chan ECY. Isolation and characterization of peptides with dipeptidyl peptidase-IV inhibitory activity from pepsin-treated bovine whey proteins. Peptides 2014; 54:39-48. [PMID: 24440459 DOI: 10.1016/j.peptides.2014.01.002] [Citation(s) in RCA: 96] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 01/01/2014] [Accepted: 01/03/2014] [Indexed: 12/21/2022]
Abstract
Inhibition of the enzyme dipeptidyl peptidase (DPP)-IV is one of the strategies used for the treatment of type 2 diabetes. In the present study, pepsin-treated whey protein isolate (WPI) and α-lactalbumin displaying DPP-IV inhibitory activity were fractionated by successive chromatographic steps and the resulting active fractions analyzed for their constituent peptides by liquid chromatography-electrospray ionization-tandem mass spectrometry. Among the identified sequences, 24 peptides derived from α-lactalbumin and 11 from β-lactoglobulin were synthesized and their effects on DPP-IV activity assessed. The most potent fragments, LKPTPEGDL and LKPTPEGDLEIL (IC50=45 and 57 μM, respectively), were found to inhibit DPP-IV in an un-competitive manner. Although several of the peptides tested showed some inhibitory activity, only two were as effective as the un-fractionated WPI hydrolysate and none were as potent as the un-fractionated α-lactalbumin hydrolysate. The peptides' structural features, including length and amino acid composition, were found to impact their inhibitory activity. This study provides new insights on the active components responsible for the DPP-IV inhibitory activity of pepsin-treated whey proteins.
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Affiliation(s)
- Isabelle M E Lacroix
- The University of British Columbia, Faculty of Land & Food Systems, Food Nutrition & Health Program, 2205 East Mall, Vancouver, BC, Canada V6T 1Z4
| | - Eunice C Y Li-Chan
- The University of British Columbia, Faculty of Land & Food Systems, Food Nutrition & Health Program, 2205 East Mall, Vancouver, BC, Canada V6T 1Z4.
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141
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Udenigwe CC. Bioinformatics approaches, prospects and challenges of food bioactive peptide research. Trends Food Sci Technol 2014. [DOI: 10.1016/j.tifs.2014.02.004] [Citation(s) in RCA: 201] [Impact Index Per Article: 20.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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142
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Nongonierma AB, FitzGerald RJ. Susceptibility of milk protein-derived peptides to dipeptidyl peptidase IV (DPP-IV) hydrolysis. Food Chem 2014; 145:845-52. [DOI: 10.1016/j.foodchem.2013.08.097] [Citation(s) in RCA: 97] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2013] [Revised: 08/20/2013] [Accepted: 08/23/2013] [Indexed: 12/23/2022]
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143
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Connolly A, Piggott CO, FitzGerald RJ. In vitro α-glucosidase, angiotensin converting enzyme and dipeptidyl peptidase-IV inhibitory properties of brewers' spent grain protein hydrolysates. Food Res Int 2014. [DOI: 10.1016/j.foodres.2013.12.021] [Citation(s) in RCA: 75] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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144
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Udenigwe CC, Gong M, Wu S. In silico analysis of the large and small subunits of cereal RuBisCO as precursors of cryptic bioactive peptides. Process Biochem 2013. [DOI: 10.1016/j.procbio.2013.08.013] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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145
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146
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Food protein hydrolysates as a source of dipeptidyl peptidase IV inhibitory peptides for the management of type 2 diabetes. Proc Nutr Soc 2013; 73:34-46. [PMID: 24131508 DOI: 10.1017/s0029665113003601] [Citation(s) in RCA: 104] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The prevalence of type 2 diabetes mellitus (T2DM) is increasing and it is estimated that by 2030 approximately 366 million people will be diagnosed with this condition. The use of dipeptidyl peptidase IV (DPP-IV) inhibitors is an emerging strategy for the treatment of T2DM. DPP-IV is a ubiquitous aminodipeptidase that cleaves incretins such as glucagon like peptide 1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP), resulting in a loss in their insulinotropic activity. Synthetic DPP-IV drug inhibitors are being used to increase the half-life of the active GLP-1 and GIP. Dietary intervention is accepted as a key component in the prevention and management of T2DM. Therefore, identification of natural food protein-derived DPP-IV inhibitors is desirable. Peptides with DPP-IV inhibitory activity have been identified in a variety of food proteins. This review aims to provide an overview of food protein hydrolysates as a source of the DPP-IV inhibitory peptides with particular focus on milk proteins. In addition, the proposed modes of inhibition and structure-activity relationship of peptide inhibitors are discussed. Milk proteins and associated peptides also display insulinotropic activity and help regulate blood glucose in healthy and diabetic subjects. Therefore, milk protein derived peptide inhibitors may be a unique multifunctional peptide approach for the management of T2DM.
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147
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Nongonierma AB, FitzGerald RJ. Inhibition of dipeptidyl peptidase IV (DPP-IV) by proline containing casein-derived peptides. J Funct Foods 2013. [DOI: 10.1016/j.jff.2013.09.012] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
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148
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Dipeptidyl peptidase IV inhibitory peptides generated in Spanish dry-cured ham. Meat Sci 2013; 96:757-61. [PMID: 24200567 DOI: 10.1016/j.meatsci.2013.09.014] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2013] [Revised: 09/16/2013] [Accepted: 09/17/2013] [Indexed: 12/20/2022]
Abstract
Dipeptidyl peptidase IV (DPP-IV) inhibitors are promising new therapies for type 2 diabetes. The aim of this study was to assay DPP-IV inhibitory peptides that can be present in a water soluble extract of Spanish dry-cured ham. Such an extract was fractionated by size-exclusion chromatography and the in vitro DPP-IV inhibitory activity determined in each collected fraction. Then, several peptides previously identified in dry-cured ham extracts or known to be products of DPP IV action were synthesised and assayed for DPP-IV inhibition. Peptides KA and AAATP showed the strongest DPP-IV inhibitory activity, with IC50 values of 6.27 mM and 6.47 mM, respectively. Dipeptides AA, GP, PL, and carnosine, as well as peptides AAAAG, ALGGA, and LVSGM were also DPP-IV inhibitors, although at a lower degree. These findings suggest the potential of Spanish dry-cured ham as a natural precursor of DPP-IV inhibitory peptides. These biopeptides could also be used as ingredients for functional foods or pharmaceutical products against type 2 diabetes.
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149
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Nongonierma AB, FitzGerald RJ. Dipeptidyl peptidase IV inhibitory properties of a whey protein hydrolysate: Influence of fractionation, stability to simulated gastrointestinal digestion and food–drug interaction. Int Dairy J 2013. [DOI: 10.1016/j.idairyj.2013.03.005] [Citation(s) in RCA: 83] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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150
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Lacroix IME, Li-Chan ECY. Inhibition of dipeptidyl peptidase (DPP)-IV and α-glucosidase activities by pepsin-treated whey proteins. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:7500-7506. [PMID: 23837435 DOI: 10.1021/jf401000s] [Citation(s) in RCA: 135] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Inhibitors of the enzymes dipeptidyl peptidase (DPP)-IV and α-glucosidase are two classes of pharmacotherapeutic agents used for the treatment of type 2 diabetes. In the present study, whey protein isolate (WPI), α-lactalbumin, β-lactoglobulin, serum albumin, and lactoferrin hydrolysates obtained by peptic digestion were investigated for their potential to serve as natural sources of DPP-IV and α-glucosidase inhibitors. Although inhibition of DPP-IV activity was observed in all pepsin-treated whey proteins studied, the α-lactalbumin hydrolysate showed the greatest potency with an IC50 value of 0.036 mg/mL. Conversely, only WPI, β-lactoglobulin, and α-lactalbumin hydrolysates displayed some inhibitory activity against α-glucosidase. This study suggests that peptides generated from whey proteins may have dual beneficial effects on glycemia regulation and could be used as functional food ingredients for the management of type 2 diabetes.
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Affiliation(s)
- Isabelle M E Lacroix
- Faculty of Land and Food Systems Food Nutrition and Health Program, The University of British Columbia , 2205 East Mall, Vancouver, BC, Canada V6T 1Z4
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