1
|
Arai S, Kurimoto M, Nakada H, Tanaka M, Ochi H, Tanaka M, Okochi M. Screening of novel DPP-IV inhibitory peptides derived from bovine milk proteins using a peptide array platform. J Biosci Bioeng 2024; 137:94-100. [PMID: 38092600 DOI: 10.1016/j.jbiosc.2023.11.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2023] [Revised: 11/06/2023] [Accepted: 11/15/2023] [Indexed: 02/10/2024]
Abstract
Dipeptidyl peptidase IV (DPP-IV) has become an important target in the prevention and treatment of diabetes. Although many DPP-IV inhibitory peptides have been identified by a general approach involving the repeated fractionation of food protein hydrolysates, the obtained results have been dependent on the content of each peptide and fractionation conditions. In the present study, a peptide array that provides comprehensive assays of peptide sequences was used to identify novel DPP-IV inhibitory peptides derived from bovine milk proteins; these peptides were then compared with those identified using the general approach. While the general approach identified only known peptides that were abundant in the hydrolysate, the peptide array-based approach identified 10 novel DPP-IV inhibitory peptides, all of which had proline at the second residue from the N-terminus. The proper or combined use of these two approaches, which have different advantages, will enable the efficient development of novel bioactive foods and drugs.
Collapse
Affiliation(s)
- Sayuri Arai
- Innovative Research Institute, Morinaga Milk Industry Co., Ltd., 5-1-83 Higashihara, Zama, Kanagawa 252-8583, Japan
| | - Masaki Kurimoto
- Innovative Research Institute, Morinaga Milk Industry Co., Ltd., 5-1-83 Higashihara, Zama, Kanagawa 252-8583, Japan
| | - Hajime Nakada
- Food Ingredients & Technology Institute, Morinaga Milk Industry Co., Ltd., 5-1-83 Higashihara, Zama, Kanagawa 252-8583, Japan
| | - Masayoshi Tanaka
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan
| | - Hiroshi Ochi
- Food Ingredients & Technology Institute, Morinaga Milk Industry Co., Ltd., 5-1-83 Higashihara, Zama, Kanagawa 252-8583, Japan
| | - Miyuki Tanaka
- Innovative Research Institute, Morinaga Milk Industry Co., Ltd., 5-1-83 Higashihara, Zama, Kanagawa 252-8583, Japan
| | - Mina Okochi
- Department of Chemical Science and Engineering, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8552, Japan.
| |
Collapse
|
2
|
Zhang J, Wu Y, Tang H, Li H, Da S, Ciren D, Peng X, Zhao K. Identification, characterization, and insights into the mechanism of novel dipeptidyl peptidase-IV inhibitory peptides from yak hemoglobin by in silico exploration, molecular docking, and in vitro assessment. Int J Biol Macromol 2024; 259:129191. [PMID: 38184042 DOI: 10.1016/j.ijbiomac.2023.129191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2023] [Revised: 12/17/2023] [Accepted: 12/31/2023] [Indexed: 01/08/2024]
Abstract
Dipeptidyl peptidase IV (DPP-IV) inhibitory peptides were screened and identified from yak hemoglobin for the first time by in silico analysis, molecular docking, and in vitro evaluation. Results showed that yak hemoglobin had a high potential to produce DPP-IV inhibitory peptides based on the sequence alignment and bioactive potential evaluation. Furthermore, "pancreatic elastase + stem bromelain" was the optimal combined-enzymatic strategy by simulated proteolysis. Additionally, 25 novel peptides were found from its simulated hydrolysate, among which 10 peptides had high binding affinities with DPP-IV by molecular docking. Most of these peptides were also in silico characterized with favorable physicochemical properties and biological potentials, including relatively low molecular weight, high hydrophobicity, several net charges, good water solubility, nontoxicity, acceptable sensory quality, and good human intestinal absorption. Finally, six novel DPP-IV inhibitory peptides were identified via in vitro assessment, among which EEKA (IC50 = 235.26 μM), DEV (IC50 = 339.45 μM), and HCDKL (IC50 = 632.93 μM) showed the strongest capacities. The hydrogen bonds and electrostatic attractions formed with core residues within the S2 pocket of DPP-IV could be mainly responsible for their inhibition performances. This work provided a time-saving method and broadened application for yak by-products development as sources of functional foods.
Collapse
Affiliation(s)
- Jin Zhang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Food Science, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang 310021, PR China.
| | - Yulong Wu
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Food Science, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang 310021, PR China; School of Public Health, Hangzhou Normal University, Hangzhou, Zhejiang 311121, PR China
| | - Honggang Tang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Food Science, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang 310021, PR China.
| | - Huanhuan Li
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Food Science, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang 310021, PR China
| | - Se Da
- Gonyal Animal Husbandry Technology and Industry Co., Naqu, Tibet 852014, PR China
| | - Dajie Ciren
- Gonyal Animal Husbandry Technology and Industry Co., Naqu, Tibet 852014, PR China
| | - Xinyan Peng
- College of Life Science, Yantai University, Yantai, Shandong 264005, PR China
| | - Ke Zhao
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-products, Institute of Food Science, Zhejiang Academy of Agricultural Sciences, Hangzhou, Zhejiang 310021, PR China.
| |
Collapse
|
3
|
Nishina A, Ukiya M, Motegi K, Kiryu R, Sato D, Sada M, Hori Y, Satsu H, Uemura K, Koketsu M, Ninomiya M, Myint LMM, Kimura H. Promotion of ABCG2 gene expression by neolignans from Piper longum L. Biosci Biotechnol Biochem 2023; 87:1523-1531. [PMID: 37709570 DOI: 10.1093/bbb/zbad132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 09/06/2023] [Indexed: 09/16/2023]
Abstract
We focused on Piper longum L., a herbal drug produced in Myanmar, which has a renoprotective effect. Thus, we attempted to isolate and identify compounds that enhance the expression of the ABCG2 gene from the aerial parts of the plant except for the fruit. Among the various P. longum extracts, we isolated and identified the components. Using Caco-2 cells, the hABCG2 mRNA expression-enhancing effects of the isolated compounds were compared with the positive reference compound (3-methylcholanthrene [3MC]) using real-time polymerase chain reaction. Six compounds were isolated and identified from the methanol extract of P. longum. Among the isolated compounds, licarin A and neopomatene had lower toxicity and higher hABCG2 mRNA expression-enhancing effects in Caco-2 cells. Suppression of hAhR expression by siRNA reduced the activity of licarin A and neopomatene, as well as the hAhR agonist 3MC, suggesting that these 2 compounds may act as hAhR agonists to promote hABCG2 expression.
Collapse
Affiliation(s)
- Atsuyoshi Nishina
- School of Health and Nutrition, Tokai Gakuen University, Nagoya, Aichi, Japan
| | - Motohiko Ukiya
- College of Science and Technology, Nihon University, Chiyoda, Tokyo, Japan
| | - Kazuki Motegi
- College of Science and Technology, Nihon University, Chiyoda, Tokyo, Japan
| | - Risa Kiryu
- College of Science and Technology, Nihon University, Chiyoda, Tokyo, Japan
| | - Daisuke Sato
- Department of Biomedical Information Engineering, Graduate School of Medical Science, Yamagata University, Yamagata, Japan
| | - Mitsuru Sada
- Department of Health Science, Gunma Paz University Graduate School, Takasaki, Gunma, Japan
| | - Yuki Hori
- Department of Biotechnology, Maebashi Institute of Technology, Maebashi, Gunma, Japan
| | - Hideo Satsu
- Department of Biotechnology, Maebashi Institute of Technology, Maebashi, Gunma, Japan
| | - Kazuhiro Uemura
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Gifu, Japan
| | - Mamoru Koketsu
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Gifu, Japan
| | - Masayuki Ninomiya
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Gifu, Japan
- Division of Instrumental Analysis, Life Science Research Center, Gifu University, Gifu, Japan
| | - Lwin Mon Mon Myint
- Division of Research and Development, FAME Pharmaceuticals Industry Co., Ltd, Yangon, Myanmar
| | - Hirokazu Kimura
- College of Science and Technology, Nihon University, Chiyoda, Tokyo, Japan
- Department of Health Science, Gunma Paz University Graduate School, Takasaki, Gunma, Japan
| |
Collapse
|
4
|
Higuchi K, Kunieda M, Sugiyama K, Tomabechi R, Kishimoto H, Inoue K. Monocarboxylate Transporter 13 (MCT13/SLC16A13) Functions as a Novel Plasma Membrane Oligopeptide Transporter. Nutrients 2023; 15:3527. [PMID: 37630718 PMCID: PMC10458055 DOI: 10.3390/nu15163527] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 08/02/2023] [Accepted: 08/08/2023] [Indexed: 08/27/2023] Open
Abstract
SLC16A13, which encodes the monocarboxylate transporter 13 (MCT13), is a susceptibility gene for type 2 diabetes and is expressed in the liver and duodenum. Some peptidase-resistant oligopeptides are absorbed in the gastrointestinal tract and affect glycemic control in the body. Their efficient absorption is mediated by oligopeptide transporter(s) at the apical and basolateral membranes of the intestinal epithelia; however, the molecules responsible for basolateral oligopeptide transport have not been identified. In this study, we examined whether MCT13 functions as a novel basolateral oligopeptide transporter. We evaluated the uptake of oligopeptides and peptidomimetics in MCT13-transfected cells. The uptake of cephradine, a probe for peptide transport system(s), significantly increased in MCT13-transfected cells, and this increase was sensitive to membrane potential. The cellular accumulation of bioactive peptides, such as anserine and carnosine, was decreased by MCT13, indicating MCT13-mediated efflux transport activity. In polarized Caco-2 cells, MCT13 was localized at the basolateral membrane. MCT13 induction enhanced cephradine transport in an apical-to-basal direction across Caco-2 cells. These results indicate that MCT13 functions as a novel efflux transporter of oligopeptides and peptidomimetics, driven by electrochemical gradients across the plasma membrane, and it may be involved in the transport of these compounds across the intestinal epithelia.
Collapse
Affiliation(s)
- Kei Higuchi
- Department of Biopharmaceutics, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Tokyo 192-0392, Japan; (K.H.); (M.K.); (K.S.); (R.T.); (H.K.)
| | - Misato Kunieda
- Department of Biopharmaceutics, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Tokyo 192-0392, Japan; (K.H.); (M.K.); (K.S.); (R.T.); (H.K.)
| | - Koki Sugiyama
- Department of Biopharmaceutics, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Tokyo 192-0392, Japan; (K.H.); (M.K.); (K.S.); (R.T.); (H.K.)
| | - Ryuto Tomabechi
- Department of Biopharmaceutics, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Tokyo 192-0392, Japan; (K.H.); (M.K.); (K.S.); (R.T.); (H.K.)
- Laboratory of Pharmaceutics, Kitasato University School of Pharmacy, 5-9-1 Shirokane, Tokyo 108-8641, Japan
| | - Hisanao Kishimoto
- Department of Biopharmaceutics, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Tokyo 192-0392, Japan; (K.H.); (M.K.); (K.S.); (R.T.); (H.K.)
| | - Katsuhisa Inoue
- Department of Biopharmaceutics, School of Pharmacy, Tokyo University of Pharmacy and Life Sciences, 1432-1 Horinouchi, Tokyo 192-0392, Japan; (K.H.); (M.K.); (K.S.); (R.T.); (H.K.)
| |
Collapse
|
5
|
Zhang X, Cai Y, Yao Z, Chi H, Li Y, Shi J, Zhou Z, Sun L. Discovery of novel OXM-based glucagon-like peptide 1 (GLP-1)/glucagon receptor dual agonists. Peptides 2023; 161:170948. [PMID: 36646385 DOI: 10.1016/j.peptides.2023.170948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/06/2022] [Revised: 01/09/2023] [Accepted: 01/11/2023] [Indexed: 01/15/2023]
Abstract
Novel glucagon receptor (GCGR) and glucagon-like peptide 1 receptor (GLP-1R) dual agonists are reported to have improved efficacy over GLP-1R mono-agonists in treating type 2 diabetes (T2DM) and obesity. Here, we describe the discovery of a novel oxyntomodulin (OXM) based GLP-1R/GCGR dual agonist with potent and balanced potency toward GLP-1R and GCGR. The lead peptide OXM-7 was obtained via stepwise rational design and long-acting modification. In ICR and db/db mice, OXM-7 exhibited prominent acute and long-acting hypoglycemic effects. In diet-induced obesity (DIO) mice, twice-daily administration of OXM-7 produced significant weight loss, normalized lipid metabolism, and improved glucose control. In DIO-nonalcoholic steatohepatitis (NASH) mice, OXM-7 treatment significantly reversed hepatic steatosis, and reduced serum and hepatic lipid levels. These preclinical data suggest the therapeutic potential of OXM-7 as a novel anti-diabetic, anti-steatotic and/or anti-obesity agent.
Collapse
Affiliation(s)
- Xiaolong Zhang
- Food and Pharmaceutical Research Institute, Jiangsu Food & Pharmaceutical Science College, Huaian 223003, Jiangsu, PR China
| | - Yuchen Cai
- School of Engineering, China Pharmaceutical University, Nanjing 210009, Jiangsu, PR China
| | - Zhihong Yao
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, College of Medicine, Jiaxing University, Jiaxing 314001, Zhejiang, PR China
| | - Heng Chi
- Food and Pharmaceutical Research Institute, Jiangsu Food & Pharmaceutical Science College, Huaian 223003, Jiangsu, PR China
| | - Yan Li
- Food and Pharmaceutical Research Institute, Jiangsu Food & Pharmaceutical Science College, Huaian 223003, Jiangsu, PR China
| | - Jingjing Shi
- Food and Pharmaceutical Research Institute, Jiangsu Food & Pharmaceutical Science College, Huaian 223003, Jiangsu, PR China
| | - Zhongbo Zhou
- School of Pharmacy, Youjiang Medical University for Nationalities, 98 Chengxiang Road, Baise 533000, Guangxi, PR China.
| | - Lidan Sun
- Jiaxing Key Laboratory for Photonanomedicine and Experimental Therapeutics, College of Medicine, Jiaxing University, Jiaxing 314001, Zhejiang, PR China.
| |
Collapse
|
6
|
Zhang M, Zhu L, Wu G, Liu T, Qi X, Zhang H. Food-derived dipeptidyl peptidase IV inhibitory peptides: Production, identification, structure-activity relationship, and their potential role in glycemic regulation. Crit Rev Food Sci Nutr 2022; 64:2053-2075. [PMID: 36095057 DOI: 10.1080/10408398.2022.2120454] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Dipeptidyl Peptidase IV (DPP-IV) inhibitory peptides are attracting increasing attention, owing to their potential role in glycemic regulation by preventing the inactivation of incretins. However, few reviews have summarized the current understanding of DPP-IV inhibitory peptides and their knowledge gaps. This paper reviews the production, identification and structure-activity relationships (SAR) of DPP-IV inhibitory peptides. Importantly, their bioavailability and hypoglycemic effects are critically discussed. Unlike the traditional method to identifying peptides after separation step by step, the bioinformatics approach identifies peptides via virtual screening that is more convenient and efficient. In addition, the bioinformatics approach was also used to investigate the SAR of peptides. Peptides with proline (Pro) or alanine (Ala) residue at the second position of N-terminal are exhibit strong DPP-IV inhibitory activity. Besides, the bioavailability of DPP-IV inhibitory peptides is related to their gastrointestinal stability and cellular permeability, and in vivo studies showed that the glucose homeostasis has been improved by these peptides. Especially, the intestinal transport of DPP-IV inhibitory peptides and cell biological assays used to evaluate their potential role in glycemic regulation are innovatively summarized. For further successful development of DPP-IV inhibitory peptides in glycemic regulation, future study should elucidate their SAR and in vivo hypoglycemic effects .
Collapse
Affiliation(s)
- Mingkai Zhang
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Ling Zhu
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Gangcheng Wu
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Tongtong Liu
- Binzhou Zhongyu Food Company Limited, Key Laboratory of Wheat Processing, Ministry of Agriculture and Rural Affairs, National Industry Technical Innovation Center for Wheat Processing, Bohai Advanced Technology Institute, Binzhou, China
| | - Xiguang Qi
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, China
| | - Hui Zhang
- National Engineering Research Center for Functional Food, Collaborative Innovation Center of Food Safety and Quality Control in Jiangsu Province, School of Food Science and Technology, Jiangnan University, Wuxi, China
| |
Collapse
|
7
|
Xu F, Xu B, Chen H, Ju X, Gonzalez de Mejia E. Enhancement of DPP-IV inhibitory activity and the capacity for enabling GLP-1 secretion through RADA16-assisted molecular designed rapeseed peptide nanogels. Food Funct 2022; 13:5215-5228. [PMID: 35438092 DOI: 10.1039/d1fo04367f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The potential of pentapeptide IPQVS (RAP1) and octapeptide ELHQEEPL (RAP2) derived from rapeseed napin as natural dipeptidyl-peptidase IV (DPP-IV) inhibitors is promising. The objective was to develop a nanogel strategy to resist the hydrolysis of digestive and intestinal enzymes to enhance the DPP-IV inhibitory activity of RAP1 and RAP2, and stimulate glucagon-like peptide 1 (GLP-1) secretion of RAP2 by a RADA16-assisted molecular design. The linker of double Gly was used in the connection of RADA16 and the functional oligopeptide region (RAP1 and RAP2). Compared to the original oligopeptides, DPP-IV IC50 of the nanogels RADA16-RAP1 and RADA16-RAP2 decreased by 26.43% and 17.46% in Caco-2 cell monolayers, respectively. The results showed that the two nanogel peptides with no toxicity to cells had higher contents of stable β-sheet structures (increased by 5.6-fold and 5.2-fold, respectively) than the original oligopeptides, and a self-assembled fibrous morphology. Rheological results suggested that the nanogels RADA16-RAP1 and RADA16-RAP2 exhibit good rheological properties for potential injectable applications; the storage modulus (G') was 10 times higher than the low modulus (G''). Furthermore, the RAP2 and its RADA16-assisted nanogel peptide at the concentration of 250 μM significantly (P < 0.05) increased the release of GLP-1 by 35.46% through the calcium-sensing receptor pathway in the enteroendocrine STC-1 cells. Hence, the innovative and harmless nanogels with the sequence of RADA16-GG-Xn have the potential for use by oral and injection administration for treating or relieving type 2 diabetes.
Collapse
Affiliation(s)
- Feiran Xu
- Engineering Research Center of Bio-process, Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei, 230009, People's Republic of China.,Department of Food Science and Human Nutrition, Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, 228 Edward R. Madigan Laboratory (ERML), 1201 West Gregory Drive, Urbana, Illinois 61801, USA.
| | - Baocai Xu
- Engineering Research Center of Bio-process, Ministry of Education, School of Food and Biological Engineering, Hefei University of Technology, Hefei, 230009, People's Republic of China
| | - Hong Chen
- Department of Food Science and Human Nutrition, Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, 228 Edward R. Madigan Laboratory (ERML), 1201 West Gregory Drive, Urbana, Illinois 61801, USA.
| | - Xingrong Ju
- National Engineering Laboratory for Cereal Fermentation Technology, State Key Laboratory of Food Science and Technology, School of Food Science and Technology, Jiangnan University, Wuxi, 214122, People's Republic of China
| | - Elvira Gonzalez de Mejia
- Department of Food Science and Human Nutrition, Division of Nutritional Sciences, University of Illinois at Urbana-Champaign, 228 Edward R. Madigan Laboratory (ERML), 1201 West Gregory Drive, Urbana, Illinois 61801, USA.
| |
Collapse
|
8
|
Pei J, Liu Z, Pan D, Zhao Y, Dang Y, Gao X. Transport, Stability, and In Vivo Hypoglycemic Effect of a Broccoli-Derived DPP-IV Inhibitory Peptide VPLVM. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:4934-4941. [PMID: 35436096 DOI: 10.1021/acs.jafc.1c08191] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Diabetes is a major metabolic disease that requires long-term pharmacotherapy. Bioactive peptides have unique advantages such as higher potency, selectivity, and safety over small molecules and have achieved great success in the treatment of diabetes. We previously isolated a dipeptidyl peptidase-IV (DPP-IV) inhibitory peptide VPLVM with IC50 = 99.68 μM from the protein hydrolysates of broccoli stems and leaves. Here, we evaluated the interaction with DPP-IV, transport, stability, and in vivo hypoglycemic effects of VPLVM. VPLVM interacted closely and steadily with DPP-IV at S1 and S2 pockets. VPLVM had a good gastrointestinal enzyme resistance and was transported through the Caco-2 cell monolayer via paracellular diffusion and by the PepT1 with a Papp of 6.96 × 10-7 cm/s. VPLVM has a t1/2 of 12.56 ± 0.41 min in vitro plasma stability. In the oral glucose tolerance test, VPLVM showed an excellent hypoglycemic effect at 30 min after administration. VPLVM has potential as a candidate for the treatment of hyperglycemia.
Collapse
Affiliation(s)
- Jingyan Pei
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, China
| | - Zhu Liu
- Zhejiang Institute for Food and Drug Control, Hangzhou 310004, China
| | - Daodong Pan
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, China
| | - Yufen Zhao
- Department of Chemistry, Tsinghua University, Beijing 100084, PR China
- Institute of Drug Discovery Technology, Ningbo University, Ningbo 315211, China
| | - Yali Dang
- College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, China
| | - Xinchang Gao
- Department of Chemistry, Tsinghua University, Beijing 100084, PR China
| |
Collapse
|
9
|
Chen M, Pan D, Zhou T, Gao X, Dang Y. Novel Umami Peptide IPIPATKT with Dual Dipeptidyl Peptidase-IV and Angiotensin I-Converting Enzyme Inhibitory Activities. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:5463-5470. [PMID: 33949854 DOI: 10.1021/acs.jafc.0c07138] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
A novel umami peptide, IPIPATKT, showed excellent dual dipeptidyl peptidase-IV (DPP-IV) and angiotensin I-converting enzyme (ACE) inhibitory activities, the IC50 values were 64 and 265 μM, respectively. Molecular docking displayed that IPIPATKT was docked into the S1 and S2 pockets of ACE, and it was close to the active site pocket of DPP-IV. The insulin-resistant-HepG2 (IR-HepG2) cell model and human umbilical vein endothelial cell (HUVEC) model showed that the peptide significantly increased the content of glucose, the activities of hexokinase, pyruvate kinase, and the concentration of nitric oxide (p < 0.01), while it reduced the content of endothelin-1 (ET-1). IPIPATKT exhibited a hypotensive effect (-23.5 ± 2.2 mmHg) and attenuated the increase in glucose levels in vivo, as demonstrated using spontaneous hypertensive rats (SHRs) and C57BL/6N mice. We reported the in vivo activities of the umami peptide with dual hypertensive and hypoglycemic effects for the first time.
Collapse
Affiliation(s)
- Mengdi Chen
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, Zhejiang, China
| | - Daodong Pan
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, Zhejiang, China
- National R&D Center for Freshwater Fish Processing, Jiangxi Normal University, Nanchang, Jiangxi 330022, China
| | - Tianqiong Zhou
- Hangzhou Huajin Pharmaceutical Co., Ltd., Hangzhou 310000, China
| | - Xinchang Gao
- Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Yali Dang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, College of Food and Pharmaceutical Sciences, Ningbo University, Ningbo 315211, Zhejiang, China
| |
Collapse
|
10
|
Zha M, Li K, Zhang W, Sun Z, Kwok LY, Menghe B, Chen Y. Untargeted mass spectrometry-based metabolomics approach unveils molecular changes in milk fermented by Lactobacillus plantarum P9. Lebensm Wiss Technol 2021. [DOI: 10.1016/j.lwt.2020.110759] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
|