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Qi Y, Tang X, Liu H, Lin Q, Lu Y, Luo H. Identification of Novel Nonapeptides from Sipunculus nudus L. and Comparing Its ACEI Activities Mechanism by Molecular Docking. Int J Pept Res Ther 2021. [DOI: 10.1007/s10989-021-10328-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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Doan CT, Tran TN, Nguyen VB, Nguyen AD, Wang SL. Utilization of Seafood Processing By-Products for Production of Proteases by Paenibacillus sp. TKU052 and Their Application in Biopeptides' Preparation. Mar Drugs 2020; 18:md18110574. [PMID: 33233577 PMCID: PMC7699763 DOI: 10.3390/md18110574] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Revised: 11/15/2020] [Accepted: 11/18/2020] [Indexed: 02/07/2023] Open
Abstract
Microbial fermentation of by-products is a renewable and efficient technique in the development of a range of useful products. In this study, protease synthesis by Paenibacillus sp. TKU052 was carried out on culture media containing some common seafood processing by-products (SPBPs) as the sole source of carbon and nitrogen (C/N). The most suitable C/N nutrition source for the production of proteases was found to be 3.0% (w/v) demineralized crab shells powder (deCSP) and maximal enzyme activity of 4.41 ± 0.16 U/mL was detected on the third day of the culture. Two proteases (P1 and P2) with a similar molecular weight of 31 kDa were successfully isolated and purified from the 3-day deCSP-containing medium. Both P1 and P2 exhibited the highest activity of gelatin hydrolysis at pH 6 and 60 °C. The gelatin hydrolysates catalyzed by Paenibacillus TKU052 proteases were evaluated for biological activities, including 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging, angiotensin-I converting enzyme (ACE) inhibition, and prebiotic activities. The gelatin hydrolysates expressed 31.76–43.95% DPPH radical scavenging activity and 31.58–36.84% ACE inhibitory activity, which was higher than those from gelatin. Gelatin hydrolysates also showed the growth-enhancing effect on Bifidobacterium bifidum BCRC 14615 with an increase to 135.70–147.81%. In short, Paenibacillus sp. TKU052 could be a potential strain to utilize crab shell wastes to produce proteases for bio-active peptides’ preparation.
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Affiliation(s)
- Chien Thang Doan
- Department of Natural Science and Technology, Tay Nguyen University, Buon Ma Thuot 630000, Vietnam; (C.T.D.); (T.N.T.)
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan
| | - Thi Ngoc Tran
- Department of Natural Science and Technology, Tay Nguyen University, Buon Ma Thuot 630000, Vietnam; (C.T.D.); (T.N.T.)
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan
| | - Van Bon Nguyen
- Institute of Biotechnology and Environment, Tay Nguyen University, Buon Ma Thuot 630000, Vietnam; (V.B.N.); (A.D.N.)
| | - Anh Dzung Nguyen
- Institute of Biotechnology and Environment, Tay Nguyen University, Buon Ma Thuot 630000, Vietnam; (V.B.N.); (A.D.N.)
| | - San-Lang Wang
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan
- Life Science Development Center, Tamkang University, New Taipei City 25137, Taiwan
- Correspondence: ; Tel.: +886-2-2621-5656; Fax: +886-2-2620-9924
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Purification and the secondary structure of a novel angiotensin I-converting enzyme (ACE) inhibitory peptide from the alcalase hydrolysate of seahorse protein. JOURNAL OF FOOD SCIENCE AND TECHNOLOGY 2020; 57:3927-3934. [PMID: 33071314 DOI: 10.1007/s13197-020-04427-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 03/18/2020] [Accepted: 04/07/2020] [Indexed: 10/24/2022]
Abstract
Bioactive peptides with blood pressure-lowering functions have received increasing attention. In recent years, many ACE-inhibiting peptides have been widely purified from various food-derived proteins and have received considerable interest owing to their potential role in cardiovascular diseases and in the reduction of side effects. In this study, we hydrolyzed a three-spot seahorse (Hippocampus trimaculatus Leach) protein by alcalase to obtain a hydrolysate containing angiotensin I-converting enzyme (ACE) inhibitory peptide. Then, the hydrolysate was fractionated by dialysis, Sephadex G-25 gel filtration chromatography, and reverse-phase high performance liquid chromatography. After consecutive purification, a potent ACE-inhibiting peptide composed of 8 amino acids (Pro-Ala-Gly-Pro-Arg-Gly-Pro-Ala; MW: 721.39 Da; IC50 value: 7.90 μM) was successfully isolated from three-spot seahorse protein. For the first time, a novel ACE-inhibiting peptide (PAGPRGPA) was isolated from the seahorse. Circular dichroism (CD) analyses suggested that the secondary structure of the purified peptide was mainly composed of random coil. Therefore, the peptide from seahorse protein may be used as a favorable ingredient in nutraceuticals, medicines, and functional foods against antihypertensive and related diseases.
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Khan S, Rehman A, Shah H, Aadil RM, Ali A, Shehzad Q, Ashraf W, Yang F, Karim A, Khaliq A, Xia W. Fish Protein and Its Derivatives: The Novel Applications, Bioactivities, and Their Functional Significance in Food Products. FOOD REVIEWS INTERNATIONAL 2020. [DOI: 10.1080/87559129.2020.1828452] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Sohail Khan
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Abdur Rehman
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Haroon Shah
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University (BTBU), Fangshan, China
| | - Rana Muhammad Aadil
- National Institute of Food Science and Technology, University of Agriculture, Faisalabad, Pakistan
| | - Ahmad Ali
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Qayyum Shehzad
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Waqas Ashraf
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Fang Yang
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Aiman Karim
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
| | - Adnan Khaliq
- Department of Food Science and Technology, Khwaja Fareed University of Engineering and Information Technology, Rahem Yar Khan, Pakistan
| | - Wenshui Xia
- State Key Laboratory of Food Science and Technology, Jiangnan University, Wuxi, Jiangsu, China
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5
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Chai KF, Voo AYH, Chen WN. Bioactive peptides from food fermentation: A comprehensive review of their sources, bioactivities, applications, and future development. Compr Rev Food Sci Food Saf 2020; 19:3825-3885. [PMID: 33337042 DOI: 10.1111/1541-4337.12651] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 09/03/2020] [Accepted: 09/20/2020] [Indexed: 12/14/2022]
Abstract
Bioactive peptides (BPs) are specific protein fragments that exert various beneficial effects on human bodies and ultimately influence health, depending on their structural properties and amino acid composition and sequences. By offering promising solutions to solve diverse health issues, the production, characterization, and applications of food-derived BPs have drawn great interest in the current literature and are of particular interest to the food and pharmaceutical industries. The microbial fermentation of protein from various sources is indubitably a novel way to produce BPs with numerous beneficial health effects. Apart from its lower cost as compared to enzymes, the BPs produced from microbial fermentation can be purified without further hydrolysis. Despite these features, current literature shows dearth of information on the BPs produced from food via microbial fermentation. Hence, there is a strong necessity to explore the BPs obtained from food fermentation for the development of commercial nutraceuticals and functional foods. As such, this review focuses on the production of BPs from different food sources, including the extensively studied milk and milk products, with emphasis on microbial fermentation. The structure-activity (antihypertensive, antioxidant, antimicrobial, opiate-like, anti-inflammatory, anticancer/antiproliferative, antithrombotic, hypolipidemic, hypocholesterolemic, and mineral binding) relationship, potential applications, future development, and challenges of BPs obtained from food fermentation are also discussed.
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Affiliation(s)
- Kong Fei Chai
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Amanda Ying Hui Voo
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
| | - Wei Ning Chen
- School of Chemical and Biomedical Engineering, Nanyang Technological University, 62 Nanyang Drive, Singapore, 637459, Singapore
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Prieto-Martínez FD, Medina-Franco JL. Current advances on the development of BET inhibitors: insights from computational methods. ADVANCES IN PROTEIN CHEMISTRY AND STRUCTURAL BIOLOGY 2020; 122:127-180. [PMID: 32951810 DOI: 10.1016/bs.apcsb.2020.06.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Epigenetics was coined almost 70 years ago for the description of heritable phenotype without altering DNA sequences. Research on the field has uncovered significant roles of such mechanisms, that account for the biogenesis of several diseases. Further studies have led the way for drug development which targets epi-enzymes, mainly for cancer treatment. Of the numerous epi-targets involved with histone acetylation, bromodomains have captured the spotlight of drug discovery focused on novel therapies. However, due to high sequence identity, the development of potent and selective inhibitors poses a significant challenge. Herein, we discuss recent computational developments on BET inhibitors and other methods that may be applied for drug discovery in general. As a proof-of-concept, we discuss a virtual screening to identify novel BET inhibitors based on coumarin derivatives. From public data, we identified putative structure-activity relationships of coumarin scaffold and propose R-group modifications for BET selectivity. Results showed that the optimization and design of novel coumarins could be further explored.
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Affiliation(s)
- Fernando D Prieto-Martínez
- Department of Pharmacy, School of Chemistry, National Autonomous University of Mexico, Mexico City, Mexico
| | - José L Medina-Franco
- Department of Pharmacy, School of Chemistry, National Autonomous University of Mexico, Mexico City, Mexico
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Chen J, Tan L, Li C, Zhou C, Hong P, Sun S, Qian ZJ. Mechanism Analysis of a Novel Angiotensin-I-Converting Enzyme Inhibitory Peptide from Isochrysis zhanjiangensis Microalgae for Suppressing Vascular Injury in Human Umbilical Vein Endothelial Cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2020; 68:4411-4423. [PMID: 32212693 DOI: 10.1021/acs.jafc.0c00925] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Microalgae are primary producers with multiple nutrients in aquatic environments and mostly have applications in biological feed and fuel industry. There are few studies assessing the angiotensin-I-converting enzyme (ACE) inhibition potential of Isochrysis zhanjiangensis, other than its antioxidant potential. In this study, we evaluated a peptide from I. zhanjiangensis (PIZ, FEIHCC) and its vascular endothelial factors and mechanism in human umbilical vein endothelial cells (HUVEC). The results reveal that PIZ (IC50 = 61.38 μM) acts against ACE in a non-competitive binding mode. In addition, PIZ inhibits angiotensin II (Ang II)-induced vascular factor secretion and expression by blocking inflammation and apoptosis through nuclear factor κB (NF-κB), nuclear erythroid 2-related factor 2 (Nrf2), mitogen-activated protein kinases (MAPKs), and the serine/threonine kinase (Akt) signal pathways. This study reveals that PIZ has potential to be developed as a therapeutic agent for hypertension and provides a new method of high-value utilization of I. zhanjiangensis.
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Affiliation(s)
- Jiali Chen
- College of Food Science and Technology, School of Chemistry and Environment, Guangdong Ocean University, Zhanjiang, Guangdong 524088, People's Republic of China
| | - Li Tan
- College of Food Science and Technology, School of Chemistry and Environment, Guangdong Ocean University, Zhanjiang, Guangdong 524088, People's Republic of China
| | - Chengyong Li
- College of Food Science and Technology, School of Chemistry and Environment, Guangdong Ocean University, Zhanjiang, Guangdong 524088, People's Republic of China
- Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang, Guangdong 524088, People's Republic of China
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, Guangdong 518114, People's Republic of China
| | - Chunxia Zhou
- College of Food Science and Technology, School of Chemistry and Environment, Guangdong Ocean University, Zhanjiang, Guangdong 524088, People's Republic of China
- Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang, Guangdong 524088, People's Republic of China
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, Guangdong 518114, People's Republic of China
| | - Pengzhi Hong
- College of Food Science and Technology, School of Chemistry and Environment, Guangdong Ocean University, Zhanjiang, Guangdong 524088, People's Republic of China
- Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang, Guangdong 524088, People's Republic of China
| | - Shengli Sun
- College of Food Science and Technology, School of Chemistry and Environment, Guangdong Ocean University, Zhanjiang, Guangdong 524088, People's Republic of China
| | - Zhong-Ji Qian
- College of Food Science and Technology, School of Chemistry and Environment, Guangdong Ocean University, Zhanjiang, Guangdong 524088, People's Republic of China
- Southern Marine Science and Engineering Guangdong Laboratory, Zhanjiang, Guangdong 524088, People's Republic of China
- Shenzhen Institute of Guangdong Ocean University, Shenzhen, Guangdong 518114, People's Republic of China
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Evaluating the benefits of renin-angiotensin system inhibitors as cancer treatments. Pharmacol Ther 2020; 211:107527. [PMID: 32173557 DOI: 10.1016/j.pharmthera.2020.107527] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 03/08/2020] [Indexed: 02/07/2023]
Abstract
G-protein-coupled receptors (GPCRs) are the largest and most diverse group of cellular membrane receptors identified and characterized. It is estimated that 30 to 50% of marketed drugs target these receptors. The angiotensin II receptor type 1 (AT1R) is a GPCR which signals in response to systemic alterations of the peptide hormone angiotensin II (AngII) in circulation. The enzyme responsible for converting AngI to AngII is the angiotensin-converting enzyme (ACE). Specific inhibitors for the AT1R (more commonly known as AT1R blockers or antagonists) and ACE are well characterized for their effects on the cardiovascular system. Combined with the extensive clinical data available on patient tolerance of AT1R blockers (ARBs) and ACE inhibitors (ACEIs), as well as their non-classical roles in cancer, the notion of repurposing this class of medications as cancer treatment(s) is explored in the current review. Given that AngII-dependent AT1R activity directly regulates angiogenesis, remodeling of vasculature, pro-inflammatory responses, stem cell programming and hematopoiesis, and electrolyte balance; the modulation of these processes with pharmacologically well characterized medications could present a valuable complementary treatment option for cancer patients.
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Pujiastuti DY, Ghoyatul Amin MN, Alamsjah MA, Hsu JL. Marine Organisms as Potential Sources of Bioactive Peptides that Inhibit the Activity of Angiotensin I-Converting Enzyme: A Review. Molecules 2019; 24:molecules24142541. [PMID: 31336853 PMCID: PMC6680877 DOI: 10.3390/molecules24142541] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Revised: 07/04/2019] [Accepted: 07/09/2019] [Indexed: 11/16/2022] Open
Abstract
Angiotensin I-converting enzyme (ACE) is a paramount therapeutic target to treat hypertension. ACE inhibitory peptides derived from food protein sources are regarded as safer alternatives to synthetic antihypertensive drugs for treating hypertension. Recently, marine organisms have started being pursued as sources of potential ACE inhibitory peptides. Marine organisms such as fish, shellfish, seaweed, microalgae, molluscs, crustaceans, and cephalopods are rich sources of bioactive compounds because of their high-value metabolites with specific activities and promising health benefits. This review aims to summarize the studies on peptides from different marine organisms and focus on the potential ability of these peptides to inhibit ACE activity.
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Affiliation(s)
- Dwi Yuli Pujiastuti
- Department of Marine, Faculty of Fisheries and Marine, Universitas Airlangga, Surabaya 60115, Indonesia.
| | - Muhamad Nur Ghoyatul Amin
- Department of Marine, Faculty of Fisheries and Marine, Universitas Airlangga, Surabaya 60115, Indonesia
| | - Mochammad Amin Alamsjah
- Department of Marine, Faculty of Fisheries and Marine, Universitas Airlangga, Surabaya 60115, Indonesia.
| | - Jue-Liang Hsu
- Department of Biological Science and Technology, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan
- Research Center for Austronesian Medicine and Agriculture, National Pingtung University of Science and Technology, Pingtung 91201, Taiwan
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Krichen F, Sila A, Caron J, Kobbi S, Nedjar N, Miled N, Blecker C, Besbes S, Bougatef A. Identification and molecular docking of novel ACE inhibitory peptides from protein hydrolysates of shrimp waste. Eng Life Sci 2018; 18:682-691. [PMID: 32624948 DOI: 10.1002/elsc.201800045] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Revised: 06/10/2018] [Accepted: 06/13/2018] [Indexed: 11/12/2022] Open
Abstract
The effect of enzymatic hydrolysis by Savinase on the interfacial properties and antihypertensive activity of shrimp waste proteins was evaluated. The physicochemical characterization, interfacial tension, and surface characteristics of shrimp waste protein hydrolysates (SWPH) using different enzyme/substrate (E/S) (SWPH5 (SWPH using E/S = 5), SWPH15 (SWPH using E/S = 15), and SWPH40 (SWPH using E/S = 40)) were also studied. SWPH5, SWPH15, and SWPH40 had an isoelectric pH around 2.07, 2.17, and 2.54 respectively. SWPH5 exhibited the lowest interfacial tension (68.96 mN/m) followed by SWPH15 (69.36 mN/m) and SWPH40 (70.29 mN/m). The in vitro ACE inhibitory activity of shrimp waste protein hydrolysates showed that the most active hydrolysate was obtained using an enzyme/substrate of 15 U/mg (SWPH15). SWPH15 had a lower IC50 value (2.17 mg/mL) than that of SWPH5 and SWPH40 (3.65 and 5.7 mg/mL, respectively). This hydrolysate was then purified and characterized. Fraction F1 separated by Sephadex G25 column which presents the best ACE inhibition activity was then separated by reversed-phase high performance liquid chromatography. Four ACE inhibitory peptides were identified and their molecular masses and amino acid sequences were determined using ESI-MS and ESI-MS/MS, respectively. The structures of the most potent peptides were SSSKAKKMP, HGEGGRSTHE, WLGHGGRPDHE, and WRMDIDGDIMISEQEAHQR. The structural modeling of anti-ACE peptides from shrimp waste through docking simulations results showed that these peptides bound to ACE with high affinity.
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Affiliation(s)
- Fatma Krichen
- Laboratoire d'Amélioration des Plantes et Valorisation des Agroressources Université de Sfax Sfax Tunisia
| | - Assaâd Sila
- Laboratoire d'Amélioration des Plantes et Valorisation des Agroressources Université de Sfax Sfax Tunisia
| | - Juliette Caron
- Institut Régional de Recherche en Agroalimentaire et Biotechnologie: Charles Violette Equipe ProBioGEM, Université de Lille 1 France
| | - Sabrine Kobbi
- Laboratoire d'Amélioration des Plantes et Valorisation des Agroressources Université de Sfax Sfax Tunisia.,Institut Régional de Recherche en Agroalimentaire et Biotechnologie: Charles Violette Equipe ProBioGEM, Université de Lille 1 France
| | - Naima Nedjar
- Institut Régional de Recherche en Agroalimentaire et Biotechnologie: Charles Violette Equipe ProBioGEM, Université de Lille 1 France
| | - Nabil Miled
- Laboratoire de Biochimie et de Génie Enzymatique des Lipases, ENIS Université de Sfax Sfax Tunisia
| | - Christophe Blecker
- Gembloux Agro Bio-Tech Unité de Technologie des Industries Agro-Alimentaires Université de Liège Gembloux Belgium
| | - Souhail Besbes
- Ecole Nationale d'Ingénieurs de Sfax, Laboratoire Valorisation, Analyse et Sécurité des Aliments Université de Sfax Sfax Tunisia
| | - Ali Bougatef
- Laboratoire d'Amélioration des Plantes et Valorisation des Agroressources Université de Sfax Sfax Tunisia
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Paiva L, Lima E, Neto AI, Baptista J. Angiotensin I-Converting Enzyme (ACE) Inhibitory Activity, Antioxidant Properties, Phenolic Content and Amino Acid Profiles of Fucus spiralis L. Protein Hydrolysate Fractions. Mar Drugs 2017; 15:E311. [PMID: 29027934 PMCID: PMC5666419 DOI: 10.3390/md15100311] [Citation(s) in RCA: 56] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2017] [Revised: 09/29/2017] [Accepted: 10/09/2017] [Indexed: 01/18/2023] Open
Abstract
Food protein-derived hydrolysates with multi-bioactivities such as antihypertensive and antioxidant properties have recently received special attention since both activities can play significant roles in preventing cardiovascular diseases. This study reports, for the first time, the angiotensin I-converting enzyme (ACE)-inhibition and antioxidant properties of ultrafiltrate fractions (UF) with different molecular weight ranges (<1, 1-3 and ≥3 kDa) obtained from Fucus spiralis protein hydrolysate (FSPH) digested with cellulase-bromelain. The amino acids profile, recovery yield, protein, peptide and total phenolic contents of these FSPH-UF, and the in vitro digestibility of F. spiralis crude protein were also investigated. FSPH-UF ≥3 kDa presented remarkably higher ACE-inhibition, yield, peptide and polyphenolic (phlorotannins) contents. Antioxidant analysis showed that FSPH-UF <1 kDa and ≥3 kDa exhibited significantly higher scavenging of 2,2-diphenyl-1-picrylhydrazyl radical and ferrous ion-chelating (FIC) activity. FSPH-UF ≥3 kDa had also notably higher ferric reducing antioxidant power (FRAP). Strong correlations were observed between ACE-inhibition and antioxidant activities (FIC and FRAP). The results suggest that ACE-inhibition and antioxidant properties of FSPH-UF may be due to the bioactive peptides and polyphenols released during the enzymatic hydrolysis. In conclusion, this study shows the potential use of defined size FSPH-UF for the prevention/treatment of hypertension and/or oxidative stress-related diseases.
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Affiliation(s)
- Lisete Paiva
- Biotechnology Centre of Azores (CBA), University of Azores, 9501-801 Ponta Delgada, Portugal.
| | - Elisabete Lima
- Biotechnology Centre of Azores (CBA), University of Azores, 9501-801 Ponta Delgada, Portugal.
- Research Center for Agricultural Technology (CITA-A), University of Azores, 9501-801 Ponta Delgada, Portugal.
| | - Ana Isabel Neto
- Azorean Biodiversity Group, Centre for Ecology, Evolution and Environmental Changes (CE3C), Department of Biology, University of Azores, 9501-801 Ponta Delgada, Portugal.
| | - José Baptista
- Biotechnology Centre of Azores (CBA), University of Azores, 9501-801 Ponta Delgada, Portugal.
- Research Center for Agricultural Technology (CITA-A), University of Azores, 9501-801 Ponta Delgada, Portugal.
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Antihypertensive effects of Ile–Pro–Ile–Lys from krill (Euphausia superba) protein hydrolysates: purification, identification and in vivo evaluation in spontaneously hypertensive rats. Eur Food Res Technol 2016. [DOI: 10.1007/s00217-016-2785-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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13
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Ko JY, Kang N, Lee JH, Kim JS, Kim WS, Park SJ, Kim YT, Jeon YJ. Angiotensin I-converting enzyme inhibitory peptides from an enzymatic hydrolysate of flounder fish ( Paralichthys olivaceus ) muscle as a potent anti-hypertensive agent. Process Biochem 2016. [DOI: 10.1016/j.procbio.2016.01.009] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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14
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Purification and Identification of a Novel Angiotensin I-Converting Enzyme Inhibitory Peptide from Sesame Meal. Int J Pept Res Ther 2015. [DOI: 10.1007/s10989-015-9471-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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15
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Choi JH, Kim KT, Kim SM. Biofunctional properties of enzymatic squid meat hydrolysate. Prev Nutr Food Sci 2015; 20:67-72. [PMID: 25866752 PMCID: PMC4391543 DOI: 10.3746/pnf.2015.20.1.67] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Accepted: 01/11/2015] [Indexed: 11/29/2022] Open
Abstract
Squid is one of the most important commercial fishes in the world and is mainly utilized or consumed as sliced raw fish or as processed products. The biofunctional activities of enzymatic squid meat hydrolysate were determined to develop value-added products. Enzymatic squid hydrolysate manufactured by Alcalase effectively quenched 1,1-diphenyl-2-picrylhydrazyl radical, hydroxyl radical, and hydrogen peroxide radical with IC50 values of 311, 3,410, and 111.5 μg/mL, respectively. Angiotensin I-converting enzyme inhibitory activity of squid hydrolysate was strong with an IC50 value of 145.1 μg/mL, while tyrosinase inhibitory activity with an IC50 value of 4.72 mg/mL was moderately low. Overall, squid meat hydrolysate can be used in food or cosmetic industries as a bioactive ingredient and possibly be used in the manufacture of seasoning, bread, noodle, or cosmetics.
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Affiliation(s)
- Joon Hyuk Choi
- Department of Marine Food Science and Technology, Gangneung-Wonju National University, Gangwon 210-702, Korea
| | - Kyung-Tae Kim
- Institute of Drug Research & Development, Chungnam National University, Daejeon 305-764, Korea
| | - Sang Moo Kim
- Department of Marine Food Science and Technology, Gangneung-Wonju National University, Gangwon 210-702, Korea
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16
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Fractionation of nitrogenous compounds from water extracts of doenjang and their physiological activities. Food Sci Biotechnol 2014. [DOI: 10.1007/s10068-014-0072-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Balti R, Bougatef A, Sila A, Guillochon D, Dhulster P, Nedjar-Arroume N. Nine novel angiotensin I-converting enzyme (ACE) inhibitory peptides from cuttlefish (Sepia officinalis) muscle protein hydrolysates and antihypertensive effect of the potent active peptide in spontaneously hypertensive rats. Food Chem 2013; 170:519-25. [PMID: 25306378 DOI: 10.1016/j.foodchem.2013.03.091] [Citation(s) in RCA: 147] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Revised: 03/17/2013] [Accepted: 03/20/2013] [Indexed: 11/30/2022]
Abstract
This study aimed to identify novel ACE inhibitory peptides from the muscle of cuttlefish. Proteins were hydrolyzed and the hydrolysates were then subjected to various types of chromatography to isolate the active peptides. Nine ACE inhibitory peptides were isolated and their molecular masses and amino acid sequences were determined using ESI-MS and ESI-MS/MS, respectively. The structures of the most potent peptides were identified as Val-Glu-Leu-Tyr-Pro, Ala-Phe-Val-Gly-Tyr-Val-Leu-Pro and Glu-Lys-Ser-Tyr-Glu-Leu-Pro. The first peptide displayed the highest ACE inhibitory activity with an IC50 of 5.22μM. Lineweaver-Burk plots suggest that Val-Glu-Leu-Tyr-Pro acts as a non-competitive inhibitor against ACE. Furthermore, antihypertensive effects in spontaneously hypertensive rats (SHR) also revealed that oral administration of Val-Glu-Leu-Tyr-Pro can decrease systolic blood pressure significantly (p<0.01). These results suggest that the Val-Glu-Leu-Tyr-Pro would be a beneficial ingredient for nutraceuticals and pharmaceuticals acting against hypertension and its related diseases.
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Affiliation(s)
- Rafik Balti
- Laboratoire de Procédés Biologiques, Génie Enzymatique et Microbien (ProBioGEM), UPRES-EA 1026, Polytech'Lille/IUT «A», Université Lille I Sciences et Technologies, BP 179, 59655 Villeneuve d'Ascq Cedex, France.
| | - Ali Bougatef
- Higher Institute of Biotechnology of Sfax, University of Sfax, Km 4 Road Soukra, 3038 Sfax, Tunisia
| | - Assaâd Sila
- Laboratoire de Procédés Biologiques, Génie Enzymatique et Microbien (ProBioGEM), UPRES-EA 1026, Polytech'Lille/IUT «A», Université Lille I Sciences et Technologies, BP 179, 59655 Villeneuve d'Ascq Cedex, France
| | - Didier Guillochon
- Laboratoire de Procédés Biologiques, Génie Enzymatique et Microbien (ProBioGEM), UPRES-EA 1026, Polytech'Lille/IUT «A», Université Lille I Sciences et Technologies, BP 179, 59655 Villeneuve d'Ascq Cedex, France
| | - Pascal Dhulster
- Laboratoire de Procédés Biologiques, Génie Enzymatique et Microbien (ProBioGEM), UPRES-EA 1026, Polytech'Lille/IUT «A», Université Lille I Sciences et Technologies, BP 179, 59655 Villeneuve d'Ascq Cedex, France
| | - Naima Nedjar-Arroume
- Laboratoire de Procédés Biologiques, Génie Enzymatique et Microbien (ProBioGEM), UPRES-EA 1026, Polytech'Lille/IUT «A», Université Lille I Sciences et Technologies, BP 179, 59655 Villeneuve d'Ascq Cedex, France
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Ahn CB, Jeon YJ, Kim YT, Je JY. Angiotensin I converting enzyme (ACE) inhibitory peptides from salmon byproduct protein hydrolysate by Alcalase hydrolysis. Process Biochem 2012. [DOI: 10.1016/j.procbio.2012.08.019] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Wijesinghe W, Ko SC, Jeon YJ. Effect of phlorotannins isolated from Ecklonia cava on angiotensin I-converting enzyme (ACE) inhibitory activity. Nutr Res Pract 2011; 5:93-100. [PMID: 21556221 PMCID: PMC3085808 DOI: 10.4162/nrp.2011.5.2.93] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2011] [Revised: 02/16/2011] [Accepted: 03/22/2011] [Indexed: 11/16/2022] Open
Abstract
Inhibition of angiotensin I-converting enzyme (ACE) activity is the most common mechanism underlying the lowering of blood pressure. In the present study, five organic extracts of a marine brown seaweed Ecklonia cava were prepared by using ethanol, ethyl acetate, chloroform, hexane, and diethyl ether as solvents, which were then tested for their potential ACE inhibitory activities. Ethanol extract showed the strongest ACE inhibitory activity with an IC(50) value of 0.96 mg/ml. Five kinds of phlorotannins, phloroglucinol, triphlorethol-A, eckol, dieckol, and eckstolonol, were isolated from ethanol extract of E. cava, which exhibited potential ACE inhibition. Dieckol was the most potent ACE inhibitor and was found to be a non-competitive inhibitor against ACE according to Lineweaver-Burk plots. Dieckol had an inducible effect on the production of NO in EAhy926 cells without having cytotoxic effect. The results of this study indicate that E. cava could be a potential source of phlorotannins with ACE inhibitory activity for utilization in production of functional foods.
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Affiliation(s)
- W.A.J.P. Wijesinghe
- School of Marine Biomedical Sciences, Jeju National University, Jeju 690-756, Korea
| | - Seok-Chun Ko
- School of Marine Biomedical Sciences, Jeju National University, Jeju 690-756, Korea
| | - You-Jin Jeon
- School of Marine Biomedical Sciences, Jeju National University, Jeju 690-756, Korea
- Marine and Environmental Research Institute, Jeju National University, 1 Ara 1-dong, 102 Jejudaehakno, Jeju 695-814, Korea
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Lee SH, Qian ZJ, Kim SK. A novel angiotensin I converting enzyme inhibitory peptide from tuna frame protein hydrolysate and its antihypertensive effect in spontaneously hypertensive rats. Food Chem 2010. [DOI: 10.1016/j.foodchem.2009.04.086] [Citation(s) in RCA: 270] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Pimenta DC, Lebrun I. Cryptides: buried secrets in proteins. Peptides 2007; 28:2403-10. [PMID: 18023928 DOI: 10.1016/j.peptides.2007.10.005] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2007] [Revised: 10/02/2007] [Accepted: 10/03/2007] [Indexed: 11/27/2022]
Abstract
The proteome originally described the entire set of proteins expressed by a genome, tissue or organism. Subsequently this term was limited to all the expressed proteins at a given time under defined conditions. Hence, specializations such as functional proteome, cancer proteome, liver proteome and so forth have arisen. One particular proteome that has been recently described is the cryptome, a unique subset of already known proteins that has the ability of generating bioactive peptides and proteins when submitted to proteolytic cleavage, rather than the classical processing pathways. This is an idea in agreement with the concept that evolution is not related to the amount of genes or putative proteins that could be secreted by an organism, but to the way these proteins are processed. These 'new' molecules may have related or increased properties when compared to the 'original' molecule or possess completely unrelated biological effects, thus increasing the array of biological roles that can be associated to one given protein (or gene). In this work, we review this recent concept and put it into the toxinology field as well, an area in which the diversity of functional molecules (and roles) is essential for the survival of a given organism.
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Affiliation(s)
- Daniel C Pimenta
- Laboratório de Bioquímica e Biofísica, Instituto Butantan, Avenida Vital Brazil 1500, São Paulo, SP 05503-900, Brazil.
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Qian ZJ, Je JY, Kim SK. Antihypertensive effect of angiotensin i converting enzyme-inhibitory peptide from hydrolysates of Bigeye tuna dark muscle, Thunnus obesus. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2007; 55:8398-403. [PMID: 17894458 DOI: 10.1021/jf0710635] [Citation(s) in RCA: 132] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Angiotensin I converting enzyme (ACE) inhibitory peptide was isolated from tuna dark muscle hydrolysate prepared by alcalase, neutrase, pepsin, papain, alpha-chymotrypsin, and trypsin, respectively. Among hydrolysates, the pepsin-derived hydrolysate exhibited the highest ACE I inhibitory activity versus those of other enzyme hydrolysates. The structure of the peptide was identified to be Trp-Pro-Glu-Ala-Ala-Glu-Leu-Met-Met-Glu-Val-Asp-Pro (molecular weight 1581 Da) by time of flight mass spectrometry/mass spectrometry analysis, and the IC 50 value of the peptide was 21.6 microM. The Lineweaver-Burk plots revealed that the peptide acts as a noncompetitive inhibitor, and the inhibitor constant ( K i) was calculated as 26.6 microM using the secondary plots. The peptide had an antihypertensive effect according to the time-course measurement after oral administration to spontaneously hypertensive rats. Maximal reduction was detected 3 h after oral administration at a dose of 10 mg/kg of body weight. These results suggest that the peptide derived from tuna dark muscle would be a beneficial ingredient for functional food or pharmaceuticals against hypertension and its related diseases.
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Affiliation(s)
- Zhong-Ji Qian
- Department of Chemistry, Pukyong National University, Busan 608-737, Korea
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Abstract
To develop angiotensin I converting enzyme (ACE) inhibitory chitin derivatives based on the properties of ACE inhibitors, chitins with different degree of deacetylation were chemically modified by grafting 2-chloroethylamino hydrochloride onto chitin at the C-6 position. Three kinds of chitin derivatives were prepared and designated as aminoethyl-chitin (AEC) with 10% degree of deacetylation, aminoethyl-chitin with 50% degree of deacetylation (AEC50), and aminoethyl-chitin with 90% degree of deacetylation (AEC90). IC50 values of three chitin derivatives on ACE were 0.064 microM (AEC), 0.038 microM (AEC50), and 0.103 microM (AEC90). The results of Dixon plots revealed that AEC50 was a competitive inhibitor, and the inhibition constant (Ki) value was 0.021 microM. In addition, the antihypertensive effect of AEC50 on spontaneously hypertensive rats (SHR) was evaluated, and the result showed that it effectively decreased systolic blood pressure (SBP) in a dose-dependent manner.
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Affiliation(s)
- Jae-Young Je
- Department of Chemistry, Pukyong National University, Busan 608-737, Korea
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Burinsky DJ, Sides SL. Mass spectral fragmentation reactions of angiotensin-converting enzyme (ACE) inhibitors. JOURNAL OF THE AMERICAN SOCIETY FOR MASS SPECTROMETRY 2004; 15:1300-1314. [PMID: 15337510 DOI: 10.1016/j.jasms.2004.05.010] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/19/2004] [Revised: 05/16/2004] [Accepted: 05/24/2004] [Indexed: 05/24/2023]
Abstract
A variety of mass spectrometric techniques have been employed in the study of a series of structurally similar compounds used in the treatment of hypertension. The compounds, known collectively as angiotensin-converting enzyme (ACE) inhibitors, all share the amino acid residue proline or some variant thereof, as a common structural element. The gas phase fragmentation behavior of these compounds has been explored systematically using various instruments and techniques. An interesting dissociation process (rearrangement) unique to one of the compounds, lisinopril, has been investigated using isotopic labeling experiments and exact mass measurements. The general nature of the process has been probed through both the positive and negative ion analyses of fourteen related compounds exhibiting structural homology.
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Affiliation(s)
- David J Burinsky
- Chemical Development Division, GlaxoSmithKline, Research Triangle Park, North Carolina 27709-3398, USA.
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Wang SL, Lin SY, Chen TF, Chuang CH. Solid-state trans-cis isomerization of captopril determined by thermal Fourier transform infrared (FT-IR) microspectroscopy. J Pharm Sci 2001; 90:1034-9. [PMID: 11536207 DOI: 10.1002/jps.1056] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Thermal Fourier transform infrared (FT-IR) microspectroscopy was used to investigate the conformational isomerization of captopril in the solid state. The result indicates that the IR peak intensity of captopril for original bands decreased dramatically at 102 degrees C, but for new bands it increased with the rise of temperature. The frequency of C=O stretching mode for carboxylic acid and for amide was located at a higher wavenumber of 1747 cm(-1) and at a lower frequency of 1591 cm(-1) as compared with the general compound, suggesting the existence of trans isomer of captopril in the solid state by intramolecular hydrogen bonding. Beyond 102 degrees C, several new bands at 1720, 1645, and 1610 cm(-1) were observed with the rise of temperature, indicating the coexistence of a cis isomer. However, the cis isomer could transform gradually to the trans isomer after cooling. The thermodynamics of equilibrium mixture of cis/trans isomers were also studied. The trans isomer was more stable than the cis isomer, but the cis isomer was favored at the higher temperature.
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Affiliation(s)
- S L Wang
- Biopharmaceutics Laboratory, Department of Medical Research & Education, Veterans General Hospital-Taipei, Shih-Pai, Taipei, Taiwan, Republic of China
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Bersuker IB, Bahçeci S, Boggs JE. Improved electron-conformational method of pharmacophore identification and bioactivity prediction. Application to angiotensin converting enzyme inhibitors. JOURNAL OF CHEMICAL INFORMATION AND COMPUTER SCIENCES 2000; 40:1363-76. [PMID: 11128095 DOI: 10.1021/ci000453n] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The electron-conformational (EC) method of pharmacophore (Pha) identification and bioactivity prediction, suggested earlier, is given here two major improvements. First, an atomic index of orbital and charge controlled interaction is introduced to better represent the ligand (substrate) in its interaction with the bioreceptor. Second, the multiconformational problem is considered in view of ligand-receptor binding states, resulting in essential simplification of the expression of bioactivity. The details of the improved EC method are demonstrated in application to the problem of angiotensin converting enzyme (ACE) inhibitors. The Pha of the latter is identified by separation of the heavily populated conformations of the chosen 51 compounds (the training set), calculation of the electronic structure, construction of their EC matrixes of congruity, and processing of the latter in comparison with the activities to reveal a common submatrix of all the active only compounds that describes the Pha. The latter contains three oxygen atoms plus a fourth atom X = S, N, O at certain interatomic distances and with restricted electronic parameters (within assumed tolerances), the position of the atom X being more changeable from one active compound to another. For quantitative prediction of the bioactivity, an expression is deduced which takes into account the duly parametrized influence of auxiliary groups (AG) which, being positioned outside the Pha, either diminish the activity (antipharmacophore shielding) or enhance it. It is shown that in case of many conformations of the same compound only one of them, that of the lowest energy which has the Pha, should be parametrized. The 15 parameters chosen to represent the AG in case of ACE inhibitors are weighted by variational (adjustable) coefficients which are determined from a regression treatment of the calculated versus known activities in the training set. Then the formulas with known coefficients are used to validate the method by calculating the bioactivity of other compounds not used in the training set. The prediction of the activity proved to be more than 90% (within experimental error and available compounds) qualitatively (yes, no) and about 60%-70% quantitatively.
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Affiliation(s)
- I B Bersuker
- Department of Chemistry and Biochemistry, Institute for Theoretical Chemistry, and College of Pharmacy, The University of Texas at Austin, 78712, USA.
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McMartin C, Bohacek RS. QXP: powerful, rapid computer algorithms for structure-based drug design. J Comput Aided Mol Des 1997; 11:333-44. [PMID: 9334900 DOI: 10.1023/a:1007907728892] [Citation(s) in RCA: 431] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
New methods for docking, template fitting and building pseudo-receptors are described. Full conformational searches are carried out for flexible cyclic and acyclic molecules. QXP (quick explore) search algorithms are derived from the method of Monte Carlo perturbation with energy minimization in Cartesian space. An additional fast search step is introduced between the initial perturbation and energy minimization. The fast search produces approximate low-energy structures, which are likely to minimize to a low energy. For template fitting, QXP uses a superposition force field which automatically assigns short-range attractive forces to similar atoms in different molecules. The docking algorithms were evaluated using X-ray data for 12 protein-ligand complexes. The ligands had up to 24 rotatable bonds and ranged from highly polar to mostly nonpolar. Docking searches of the randomly disordered ligands gave rms differences between the lowest energy docked structure and the energy-minimized X-ray structure, of less than 0.76 A for 10 of the ligands. For all the ligands, the rms difference between the energy-minimized X-ray structure and the closest docked structure was less than 0.4 A, when parts of one of the molecules which are in the solvent were excluded from the rms calculation. Template fitting was tested using four ACE inhibitors. Three ACE templates have been previously published. A single run using QXP generated a series of templates which contained examples of each of the three. A pseudo-receptor, complementary to an ACE template, was built out of small molecules, such as pyrrole, cyclopentanone and propane. When individually energy minimized in the pseudo-receptor, each of the four ACE inhibitors moved with an rms of less than 0.25 A. After random perturbation, the inhibitors were docked into the pseudo-receptor. Each lowest energy docked structure matched the energy-minimized geometry with an rms of less than 0.08 A. Thus, the pseudo-receptor shows steric and chemical complementarity to all four molecules. The QXP program is reliable, easy to use and sufficiently rapid for routine application in structure-based drug design.
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Affiliation(s)
- C McMartin
- Research Department, Novartis Pharmaceuticals Corporation, Summit, NJ 07901, USA
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31
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Ksander GM, de Jesus R, Yuan A, Ghai RD, McMartin C, Bohacek R. Meta-substituted benzofused macrocyclic lactams as zinc metalloprotease inhibitors. J Med Chem 1997; 40:506-14. [PMID: 9046341 DOI: 10.1021/jm960583g] [Citation(s) in RCA: 25] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The design, synthesis, and biochemical profile of meta-substituted benzofused macrocyclic lactams are described. The meta-substituted benzofused macrocyclic lactams were designed to have a degree of flexibility allowing the amide bond to occupy two completely different conformations while maintaining sufficient rigidity to allow for strong interaction between enzyme and inhibitor. Using TFIT, a novel molecular superimposition program, it was shown that the meta analogs could be readily superimposed onto our ACE inhibitor template whereas no low-energy superimpositions of the ortho-substituted macrocycles could be found. The macrocycles were prepared by tethering aldehyde 1 derived from S-glutamic acid or S-aspartic acid to a meta-substituted phosphonium bromide 2. Homologation to a monocarboxylic acid methyl ester malonate followed by deprotection and cyclization gave the macrocyclic frame. Further manipulation gave the desired compounds. Unlike the ortho-substituted benzofused macrocyclic lactams described in the previous paper which are selective NEP inhibitors, the meta-substituted compounds are dual inhibitors of both NEP and ACE. The most potent member of this new series, compound 16a, inhibited both enzymes with an IC50 = 8 nM in NEP and 4 nM in ACE.
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Affiliation(s)
- G M Ksander
- Research Department, CIBA-GEIGY Corporation, Summit, New Jersey 07901, USA
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Bohacek R, De Lombaert S, McMartin C, Priestle J, Grütter M. Three-Dimensional Models of ACE and NEP Inhibitors and Their Use in the Design of Potent Dual ACE/NEP Inhibitors. J Am Chem Soc 1996. [DOI: 10.1021/ja950818y] [Citation(s) in RCA: 48] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Regine Bohacek
- Research Department, Pharmaceuticals Division, Ciba-Geigy Corporation, Summit, New Jersey 07901, and Department of Core Drug Discovery Technologies, Pharmaceuticals Division, Ciba-Geigy Ltd., Basel, Switzerland
| | - Stéphane De Lombaert
- Research Department, Pharmaceuticals Division, Ciba-Geigy Corporation, Summit, New Jersey 07901, and Department of Core Drug Discovery Technologies, Pharmaceuticals Division, Ciba-Geigy Ltd., Basel, Switzerland
| | - Colin McMartin
- Research Department, Pharmaceuticals Division, Ciba-Geigy Corporation, Summit, New Jersey 07901, and Department of Core Drug Discovery Technologies, Pharmaceuticals Division, Ciba-Geigy Ltd., Basel, Switzerland
| | - John Priestle
- Research Department, Pharmaceuticals Division, Ciba-Geigy Corporation, Summit, New Jersey 07901, and Department of Core Drug Discovery Technologies, Pharmaceuticals Division, Ciba-Geigy Ltd., Basel, Switzerland
| | - Markus Grütter
- Research Department, Pharmaceuticals Division, Ciba-Geigy Corporation, Summit, New Jersey 07901, and Department of Core Drug Discovery Technologies, Pharmaceuticals Division, Ciba-Geigy Ltd., Basel, Switzerland
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Fournie-Zaluski MC, Coric P, Thery V, Gonzalez W, Meudal H, Turcaud S, Michel JB, Roques BP. Design of orally active dual inhibitors of neutral endopeptidase and angiotensin-converting enzyme with long duration of action. J Med Chem 1996; 39:2594-608. [PMID: 8691458 DOI: 10.1021/jm950783c] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Mercaptoacyl dipeptides, containing a glycine linked to a C-terminal 5-phenylproline, have been synthesized in order to obtain new highly efficient dual inhibitors of the two zinc metallopeptidases, neutral endopeptidase (NEP) and angiotensin-converting enzyme (ACE), which are involved in the control of blood pressure and fluid homeostasis. These compounds have been designed (i) to fit optimally the ACE pharmacophore previously described (Fournié-Zaluski, M. C.; et al. J. Med. Chem. 1994, 37, 1070-1083), through interaction with the S1, S1', and S2' subsites of this enzyme, (ii) and to interact with the S1' and S2' subsites of NEP with the 5-phenylproline moiety outside the catalytic domain (Coric, P.; et al. J. Med. Chem. 1996, 39, 1210-1219). Replacement of Gly by Ala in these mercaptoacyl dipeptides induced an about 100-fold decrease in ACE inhibition. This shows that, in agreement with molecular modeling studies, a steric constraint as weak as a methyl group hinders optimal ACE active site recognition. Among these compounds, the dual inhibitor 26 (RB 106) (Ki, ACE = 0.35 nM; NEP = 1.6 nM) showed excellent pharmacokinetic properties with an almost complete in vivo inhibition of NEP and ACE for more than 4 h after oral administration in mice of a low dose (2.6 x 10(-5) mol/kg) of the inhibitor. Moreover, RB 106 remained active 12 h after oral administration. In spontaneous hypertensive rats, a chronic treatment of orally administered RB 106 (25 mg/kg/day) induced a prolonged hypotensive effect (-28 mmHg) still significant 2 days after the end of the treatment. In DOCA salt rats, a hypotensive response and a significant natriuresis were observed after i.v. administration. RB 106, which is one of the most potent dual inhibitors described to date, could have interesting clinical applications in long term treatment of congestive heart failure and myocardial ischemia.
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Affiliation(s)
- M C Fournie-Zaluski
- Département de Pharmacochimie Moléculaire et Structurale, U266 INSERM-URA D 1500 CNRS, Paris, France
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Luke BT. A quantum mechanical conformational search of 1-(3-mercaptopropionyl)-l-proline; the demethylated analogue of the potent angiotensin-converting enzyme inhibitor captopril. ACTA ACUST UNITED AC 1995. [DOI: 10.1016/0166-1280(94)03894-q] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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35
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Luke BT. A quantum mechanical conformational search of captopril, a potent inhibitor of the angiotensin-converting enzyme. ACTA ACUST UNITED AC 1994. [DOI: 10.1016/0166-1280(94)80055-3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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36
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Qin XZ, Ip DP, Tsai EW. Determination and rotamer separation of enalapril maleate by capillary electrophoresis. J Chromatogr A 1992. [DOI: 10.1016/0021-9673(92)85417-r] [Citation(s) in RCA: 52] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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37
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Green DV, Hillier IH, Morris GA, Gensmantel N, Payling DW, Robinson DH. A semiempirical molecular orbital and dynamic NMR study of conformational isomerism in angiotensin-converting enzyme inhibitors. ACTA ACUST UNITED AC 1991. [DOI: 10.1016/0166-1280(91)85142-t] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Sakamoto Y, Sakamoto Y, Ishii T, Ohmoto T. The binding of metal ions and angiotensin converting enzyme (ACE) inhibitor by 13C NMR. J Mol Struct 1991. [DOI: 10.1016/0022-2860(91)80015-v] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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39
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Skoglöf A, Nilsson I, Gustafsson S, Deinum J, Göthe PO. Cis-trans isomerization of an angiotensin I-converting enzyme inhibitor. An enzyme kinetic and nuclear magnetic resonance study. BIOCHIMICA ET BIOPHYSICA ACTA 1990; 1041:22-30. [PMID: 2171661 DOI: 10.1016/0167-4838(90)90117-x] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The angiotensin I-converting enzyme (peptidyl-dipeptide hydrolase, EC 3.4.15.1) inhibitor, ramiprilat (2-[N-[(S)-1-ethoxycarbonyl-3-phenylpropyl]-L-Ala]-(1S,3S,5S)-2- azabicyclo[3.3.0]octane-3-carboxylic acid), is shown to exist in tow conformational isomers, cis and trans, which interconvert around the amide bond. The two conformers were separated by reversed-phase high-performance liquid chromatography. The conformers were identified by nuclear Overhauser effect measurements. From line shape analysis the isomerization rate constants were determined to be kcis----trans = 15 s-1 and ktrans----cis = 5 s-1 at 368 K in [2H]phosphate buffer (p2H 7.5). By enzyme kinetic studies using 3-(2-furylacryloyl)-L-Phe-Gly-Gly as substrate, the trans conformer was found to be the most potent enzyme inhibitor, whereas the cis conformer had a very low inhibitory effect. A new inhibition mechanism is presented for this type of slow, tight-binding inhibitors that contain an amide bond. This mechanism involves an equilibrium between the two conformers and the enzyme-bound inhibitor complex.
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Affiliation(s)
- A Skoglöf
- Department of Biochemistry and Biophysics, Chalmers University of Technology, Göteborg, Sweden
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Manallack DT, Beart PM. A three dimensional receptor model of the dopamine D2 receptor from computer graphic analyses of D2 agonists. J Pharm Pharmacol 1988; 40:422-8. [PMID: 2901474 DOI: 10.1111/j.2042-7158.1988.tb06307.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Four potent D2 agonists were employed to define a primary pharmacophore for the D2 receptor. Hypothetical receptor points, representing interaction points on a receptor were built on to each molecule. These points and the nitrogen atom were averaged to give the coordinates (A) of the primary pharmacophore: R1 (0.00, 3.50, 0.00), R2 (0.00, -3.50, 0.00), R3 (5.79, 2.06, 0.00), and nitrogen (5.13, -0.63, 0.37). Eight structural classes of D2 agonists were then superimposed on to the primary pharmacophore to aid in the location of secondary binding sites. The secondary sites include two lipophilic clefts, an area of steric bulk, a region to hydrogen bond 'meta' hydroxy groups and a 'critical region' accepting methoxy and halogen substituents but not hydroxy substituents. The model has the potential to design and predict activity of novel D2 agonist compounds.
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Affiliation(s)
- D T Manallack
- University of Melbourne, Austin Hospital, Heidelberg, Victoria Australia
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Andrews PR, Iskander MN, Issa J, Reiss JA. Molecular Modelling of the Active Site of Enkephalin-Degrading Neutral Endopeptidase-24.11 (Enkephalinase) An Active Site Model for Neutral Endopeptidase-24.11. ACTA ACUST UNITED AC 1988. [DOI: 10.1002/qsar.19880070102] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Mayer D, Naylor CB, Motoc I, Marshall GR. A unique geometry of the active site of angiotensin-converting enzyme consistent with structure-activity studies. J Comput Aided Mol Des 1987; 1:3-16. [PMID: 2851035 DOI: 10.1007/bf01680553] [Citation(s) in RCA: 104] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Previous structure-activity studies of captopril and related active angiotensin-converting enzyme (ACE) inhibitors have led to the conclusion that the basic structural requirements for inhibition of ACE involve (a) a terminal carboxyl group; (b) an amido carbonyl group; and (c) different types of effective zinc (Zn) ligand functional groups. Such structural requirements common to a set of compounds acting at the same receptor have been used to define a pharmacophoric pattern of atoms or groups of atoms mutually oriented in space that is necessary for ACE inhibition from a stereochemical point of view. A unique pharmacophore model (within the resolution of approximately 0.15 A) was observed using a method for systematic search of the conformational hyperspace available to the 28 structurally different molecules under study. The method does not assume a common molecular framework, and, therefore, allows comparison of different compounds that is independent of their absolute orientation. Consequently, by placing the carboxyl binding group, the binding site for amido carbonyl, and the Zn atom site in positions determined by ideal binding geometry with the inhibitors' functional groups, it was possible to clearly specify a geometry for the active site of ACE.
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Affiliation(s)
- D Mayer
- Department of Pharmacology, Washington University School of Medicine, St. Louis, MO 63110
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Yakhontov LN, Liberman SS. Agents for the treatment of cardiovascular diseases. Pharm Chem J 1987. [DOI: 10.1007/bf01146176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Bashiardes G, Davies SG. The asymmetric synthesis of (−)-captopril utilising the iron chiral auxiliary [(η5-C5H5)Fe(CO)(PPh3)]. Tetrahedron Lett 1987. [DOI: 10.1016/s0040-4039(00)96782-0] [Citation(s) in RCA: 35] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Chapter 27 Molecular Modeling as an Aid to Drug Design and Discovery. ANNUAL REPORTS IN MEDICINAL CHEMISTRY 1987. [DOI: 10.1016/s0065-7743(08)61175-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
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Labanowski J, Motoc I, Naylor CB, Mayer D, Dammkoehler RA. Three-Dimensional Quantitative Structure-Activity Relationships. 2. Conformational Mimicry and Topographical Similarity of Flexible Molecules. ACTA ACUST UNITED AC 1986. [DOI: 10.1002/qsar.19860050403] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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48
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Motoc I, Dammkoehler RA, Mayer D, Labanowski J. Three-Dimensional Quantitative Structure-Activity Relationships I. General Approach to the Pharmacophore Model Validation. ACTA ACUST UNITED AC 1986. [DOI: 10.1002/qsar.19860050305] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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