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Pipaliya R, Basaiawmoit B, Sakure AA, Maurya R, Bishnoi M, Kondepudi KK, Padhi S, Rai AK, Liu Z, Sarkar P, Hati S. Production and characterization of anti-hypertensive and anti-diabetic peptides from fermented sheep milk with anti-inflammatory activity: in vitro and molecular docking studies. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024. [PMID: 38855927 DOI: 10.1002/jsfa.13617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2024] [Revised: 05/09/2024] [Accepted: 05/18/2024] [Indexed: 06/11/2024]
Abstract
BACKGROUND The present study aimed to evaluate the anti-hypertensive and anti-diabetic activities from biologically active peptides produced by fermented sheep milk with Lacticaseibacillus paracasei M11 (MG027695), as well as to purify and characterize the angiotensin-converting enzyme (ACE) inhibitory and anti-diabetic peptides produced from fermented sheep milk. RESULTS After 48 h of fermentation at 37 °C, sheep milk demonstrated significant changes in anti-diabetic effects and ACE-I effects, with inhibition percentages observed for ACE inhibition (76.32%), α-amylase (70.13%), α-glucosidase (70.11%) and lipase inhibition (68.22%). The highest level of peptides (9.77 mg mL-1) was produced by optimizing the growth conditions, which included an inoculation rate of 2.5% and a 48 h of incubation period. The comparison of molecular weight distributions among protein fractions was conducted through sodium dodecyl-sulfate polyacrylamide gel electrophoresis analysis, whereas spots were separated using 2D gel electrophoresis according to both the molecular weight and pH. Peptide characterization with ultra-filtration membranes at 3 and 10 kDa allowed the study to assess molecular weight-based separation. Nitric oxide generated by lipopolysaccharide and the secretion of pro-inflammatory cytokines in RAW 264.7 immune cells were both inhibited by sheep milk fermented with M11. Fourier-transform infrared spectroscopy was employed to assess changes in functional groups after fermentation, providing insights into the structural changes occurring during fermentation. CONCLUSION The present study demonstrates that fermentation with L. paracasei (M11) led to significant changes in fermented sheep milk, enhancing its bioactive properties, notably in terms of ACE inhibition and anti-diabetic activities, and the generation of peptides with bioactive properties has potential health benefits. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Rinkal Pipaliya
- Department of Dairy Microbiology, SMC College of Dairy Science, Kamdhenu University, Anand, India
| | - Bethsheba Basaiawmoit
- Department of Rural Development and Agricultural Production, North-Eastern Hill University, Tura Campus, Chasingre, India
| | - Amar A Sakure
- Department of Agriculture Biotechnology, Anand Agricultural University, Anand, India
| | - Ruchika Maurya
- Regional Center for Biotechnology, Faridabad, India
- Healthy Gut Research Group, Food & Nutritional Biotechnology Division, National Agri-Food Biotechnology Institute, SAS Nagar, India
| | - Mahendra Bishnoi
- Healthy Gut Research Group, Food & Nutritional Biotechnology Division, National Agri-Food Biotechnology Institute, SAS Nagar, India
| | - Kanthi Kiran Kondepudi
- Healthy Gut Research Group, Food & Nutritional Biotechnology Division, National Agri-Food Biotechnology Institute, SAS Nagar, India
| | - Srichandan Padhi
- Food & Nutritional Biotechnology Division, National Agri-Food Biotechnology Institute, SAS Nagar, India
| | - Amit Kumar Rai
- Food & Nutritional Biotechnology Division, National Agri-Food Biotechnology Institute, SAS Nagar, India
| | - Zhenbin Liu
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an, China
| | - Preetam Sarkar
- Department of Food Process Engineering, National Institute of Technology, Rourkela, India
| | - Subrota Hati
- Department of Dairy Microbiology, SMC College of Dairy Science, Kamdhenu University, Anand, India
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Pipaliya R, Basaiawmoit B, Sakure AA, Maurya R, Bishnoi M, Kondepudi KK, Singh BP, Paul S, Liu Z, Sarkar P, Patel A, Hati S. Peptidomics-based identification of antihypertensive and antidiabetic peptides from sheep milk fermented using Limosilactobacillus fermentum KGL4 MTCC 25515 with anti-inflammatory activity: in silico, in vitro, and molecular docking studies. Front Chem 2024; 12:1389846. [PMID: 38746020 PMCID: PMC11091447 DOI: 10.3389/fchem.2024.1389846] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Accepted: 04/01/2024] [Indexed: 05/16/2024] Open
Abstract
This study investigated the synthesis of bioactive peptides from sheep milk through fermentation with Limosilactobacillus fermentum KGL4 MTCC 25515 strain and assessed lipase inhibition, ACE inhibition, α-glucosidase inhibition, and α-amylase inhibition activities during the fermentation process. The study observed the highest activities, reaching 74.82%, 70.02%, 72.19%, and 67.08% (lipase inhibition, ACE inhibition, α-glucosidase inhibition, and α-amylase inhibition) after 48 h at 37°C, respectively. Growth optimization experiments revealed that a 2.5% inoculation rate after 48 h of fermentation time resulted in the highest proteolytic activity at 9.88 mg/mL. Additionally, fractions with less than 3 kDa of molecular weight exhibited superior ACE-inhibition and anti-diabetic activities compared to other fractions. Fermentation of sheep milk with KGL4 led to a significant reduction in the excessive production of NO, TNF-α, IL-6, and IL-1β produced in RAW 267.4 cells upon treatment with LPS. Peptides were purified utilizing SDS-PAGE and electrophoresis on 2D gels, identifying a maximum number of proteins bands ranging 10-70 kDa. Peptide sequences were cross-referenced with AHTPDB and BIOPEP databases, confirming potential antihypertensive and antidiabetic properties. Notably, the peptide (GPFPILV) exhibited the highest HPEPDOCK score against both α-amylase and ACE.
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Affiliation(s)
- Rinkal Pipaliya
- Department of Dairy Microbiology, SMC College of Dairy Science, Kamdhenu University, Anand, Gujarat, India
| | - Bethsheba Basaiawmoit
- Department of Rural Development and Agricultural Production, North-Eastern Hill University, Tura Campus, Chasingre, Meghalaya, India
| | - Amar A. Sakure
- Departmentof Agriculture Biotechnology, Anand Agricultural University, Anand, Gujarat, India
| | - Ruchika Maurya
- Regional Center for Biotechnology, Faridabad, Haryana, India
- Healthy Gut Research Group, Food and Nutritional Biotechnology Division, National Agri-Food Biotechnology Institute, SAS Nagar, Punjab, India
| | - Mahendra Bishnoi
- Healthy Gut Research Group, Food and Nutritional Biotechnology Division, National Agri-Food Biotechnology Institute, SAS Nagar, Punjab, India
| | - Kanthi Kiran Kondepudi
- Healthy Gut Research Group, Food and Nutritional Biotechnology Division, National Agri-Food Biotechnology Institute, SAS Nagar, Punjab, India
| | - Brij Pal Singh
- Department of Microbiology, School of Interdisciplinary and Applied Sciences, Central University of Haryana, Mahendergarh, India
| | - Souparno Paul
- Department of Microbiology, School of Interdisciplinary and Applied Sciences, Central University of Haryana, Mahendergarh, India
| | - Zhenbin Liu
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi’an, China
| | - Preetam Sarkar
- Department of Food Process Engineering, National Institute of Technology, Rourkela, India
| | - Ashish Patel
- Department of Animal Genetics and Breeding, College of Veterinary Science, Kamdhenu University, Anand, Gujarat, India
| | - Subrota Hati
- Department of Dairy Microbiology, SMC College of Dairy Science, Kamdhenu University, Anand, Gujarat, India
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Manoharan S. Is It Still Relevant to Discover New ACE Inhibitors from Natural Products? YES, but Only with Comprehensive Approaches to Address the Patients' Real Problems: Chronic Dry Cough and Angioedema. Molecules 2023; 28:molecules28114532. [PMID: 37299008 DOI: 10.3390/molecules28114532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2023] [Revised: 03/24/2023] [Accepted: 04/03/2023] [Indexed: 06/12/2023] Open
Abstract
Despite many publications related to the identification of new angiotensin-I-converting enzyme (ACE) inhibitors, especially peptides from natural products, the actual reason/s for why new ACE inhibitors need to be discovered are yet to be fully understood. New ACE inhibitors are pivotal to address serious side effects caused by commercially available ACE inhibitors in hypertensive patients. Despite the effectiveness of commercial ACE inhibitors, due to these side effects, doctors often prescribe angiotensin receptor blockers (ARBs). Recent evidence has shown the benefits of ACE inhibitors over ARBs in hypertensive patients and hypertensive-diabetes mellitus patients. In order to address these side effects, the somatic ACE's enzyme structures need to be revisited. The peptides isolated from the natural products need to be verified for their stability against ACE and several important gastrointestinal enzymes. The stable peptides sequence with the presence of favourable ACE inhibitory-related amino-acids, such as tryptophan (W), at the C-terminal need to be subjected to molecular docking and dynamics analyses for selecting ACE inhibitory peptide/s with C-domain-specific inhibition instead of both C- and N-domains' inhibition. This strategy will help to reduce the accumulation of bradykinin, the driving factor behind the formation of the side effects.
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Affiliation(s)
- Sivananthan Manoharan
- Molecular Pathology Unit, Cancer Research Centre, Institute for Medical Research, National Institutes of Health, Ministry of Health Malaysia, Setia Alam, Shah Alam 40170, Malaysia
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Wu N, Zhang F, Shuang Q. Peptidomic analysis of the angiotensin-converting-enzyme inhibitory peptides in milk fermented with Lactobacillus delbrueckii QS306 after ultrahigh pressure treatment. Food Res Int 2023; 164:112406. [PMID: 36737987 DOI: 10.1016/j.foodres.2022.112406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 12/20/2022] [Accepted: 12/24/2022] [Indexed: 12/29/2022]
Abstract
In this study, we assessed the effect of ultrahigh pressure (UHP) treatment on the concentration of peptides and angiotensin-converting enzyme (ACE) inhibitory activity in milk fermented with Lactobacillus delbrueckii QS306. The peptides were identified using peptidomic analysis, and 313 unique peptides were identified. These peptides were derived from 53 precursor proteins. Before and after UHP treatment, 361 (22.2%) peptide sequences exhibited difference, and 53 peptide segments were significantly different. Among them, small peptides (amino acid residues ≤6) isoelectric were point at pH 5-6, and the net charge was mainly positive or neutral. With hydrophobicity and ACE inhibitory activity as screening indicators, 214 small peptides with potential ACE inhibitory activity were identified, and 130 new peptides had potential ACE inhibitory activity. A novel ACE inhibitory peptide VAPFP was synthesized, whose in vitro inhibition rate was 10.56 μmol\/L. Therefore, using peptidomics, the changes in peptide sequences and enhancement in ACE inhibitory activity before and after UHP treatment could be effectively identified in milk fermented with Lactobacillus delbrueckii QS306. This study provided a convenient method for the discovery and identification of new ACE inhibitory peptides.
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Affiliation(s)
- Nan Wu
- Department of College of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, People's Republic of China
| | - Fengmei Zhang
- Department of College of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, People's Republic of China.
| | - Quan Shuang
- Department of College of Food Science and Engineering, Inner Mongolia Agricultural University, Hohhot 010018, People's Republic of China.
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A comparative study of fermented buffalo and camel milk with anti-inflammatory, ACE-inhibitory and anti-diabetic properties and release of bio active peptides with molecular interactions: In vitro, in silico and molecular study. FOOD BIOSCI 2023. [DOI: 10.1016/j.fbio.2023.102373] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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6
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Renjuan L, Xiuli Z, Liping S, Yongliang Z. Identification, in silico screening, and molecular docking of novel ACE inhibitory peptides isolated from the edible symbiot Boletus griseus-Hypomyces chrysospermus. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.114008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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7
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Exploring the potential of Lactobacillus and Saccharomyces for biofunctionalities and the release of bioactive peptides from whey protein fermentate. FOOD BIOSCI 2022. [DOI: 10.1016/j.fbio.2022.101758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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8
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Ishara J, Buzera A, Mushagalusa GN, Hammam ARA, Munga J, Karanja P, Kinyuru J. Nutraceutical potential of mushroom bioactive metabolites and their food functionality. J Food Biochem 2021; 46:e14025. [PMID: 34888869 DOI: 10.1111/jfbc.14025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 10/08/2021] [Accepted: 11/15/2021] [Indexed: 12/14/2022]
Abstract
Numerous mushroom bioactive metabolites, including polysaccharides, eritadenine, lignin, chitosan, mevinolin, and astrakurkurone have been studied in life-threatening conditions and diseases such as diabetes, cardiovascular, hypertension, cancer, DNA damage, hypercholesterolemia, and obesity attempting to identify natural therapies. These bioactive metabolites have shown potential as antiviral and immune system strengthener natural agents through diverse cellular and physiological pathways modulation with no toxicity evidence, widely available, and inexpensive. In light of the emerging literature, this paper compiles the most recent information describing the molecular mechanisms that underlie the nutraceutical potentials of these mushroom metabolites suggesting their effectiveness if combined with existing drug therapies while discussing the food functionality of mushrooms. The findings raise hope that these mushroom bioactive metabolites may be utilized as natural therapies considering their therapeutic potential while anticipating further research designing clinical trials and developing new drug therapies while encouraging their consumption as a natural adjuvant in preventing and controlling life-threatening conditions and diseases. PRACTICAL APPLICATIONS: Diabetes, cardiovascular, hypertension, cancer, DNA damage, hypercholesterolemia, and obesity are among the world's largest life-threatening conditions and diseases. Several mushroom bioactive compounds, including polysaccharides, eritadenine, lignin, chitosan, mevinolin, and astrakurkurone have been found potential in tackling these diseases through diverse cellular and physiological pathways modulation with no toxicity evidence, suggesting their use as nutraceutical foods in preventing and controlling these life-threatening conditions and diseases.
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Affiliation(s)
- Jackson Ishara
- Department of Food Science and Technology, Université Evangélique en Afrique, Bukavu, D.R. Congo.,Department of Food Science and Technology, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya
| | - Ariel Buzera
- Department of Food Science and Technology, Université Evangélique en Afrique, Bukavu, D.R. Congo.,Department of Food Science and Technology, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya
| | - Gustave N Mushagalusa
- Department of Food Science and Technology, Université Evangélique en Afrique, Bukavu, D.R. Congo
| | - Ahmed R A Hammam
- Dairy and Food Science Department, South Dakota State University, Brookings, South Dakota, USA
| | - Judith Munga
- Department Food Nutrition and Dietetics, Kenyatta University, Nairobi, Kenya
| | - Paul Karanja
- Department of Food Science and Technology, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya
| | - John Kinyuru
- Department of Food Science and Technology, Jomo Kenyatta University of Agriculture and Technology, Nairobi, Kenya
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Production of the Antihypertensive Peptide Tyr-Pro from Milk Using the White-Rot Fungus Peniophora sp. in Submerged Fermentation and a Jar Fermentor. DAIRY 2021. [DOI: 10.3390/dairy2030036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
In order to evaluate the blood pressure-lowering peptide Tyr-Pro (YP) derived from casein, we wanted to develop an efficient fermentation method. Therefore, we chose to use a jar fermentor for this purpose. Strains with an excellent antihypertensive peptide-releasing ability from casein were selected from basidiomycete fungi that grow well in milk under shaking conditions accompanied by physical stimulation. Among them, the white-rot fungus Peniophora sp., which is suited for growth only in cow’s milk or low-fat milk under vigorous shaking conditions, was found to release peptides and amino acids from milk. When comparing the growth in cow’s milk and low-fat milk, there was no particular difference in the growth of mycelia between the two, but this fungus tended to preferentially consume lactose under low-fat conditions. The fermented milk exhibited good production of the target peptide YP. The expression of many genes encoding proteolytic enzymes, such as aminopeptidases and carboxypeptidases, was observed during the milk fermentation. Furthermore, this fungus showed good growth in a jar fermentor culture using only cow’s milk or low-fat milk, which enabled the efficient production of YP and ACE-inhibitory activity. At this time, it was more effective to use cow’s milk than low-fat milk. These results suggest that Peniophora sp. could be potentially useful in the production of the functional YP peptide from milk.
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10
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A review on mushroom-derived bioactive peptides: Preparation and biological activities. Food Res Int 2020; 134:109230. [DOI: 10.1016/j.foodres.2020.109230] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 03/20/2020] [Accepted: 04/09/2020] [Indexed: 01/06/2023]
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11
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Suwannapan O, Wachirattanapongmetee K, Thawornchinsombut S, Katekaew S. Angiotensin‐I‐converting enzyme (ACE)‐inhibitory peptides from Thai jasmine rice bran protein hydrolysates. Int J Food Sci Technol 2020. [DOI: 10.1111/ijfs.14495] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Orapa Suwannapan
- Department of Biochemistry Faculty of Science Khon Kaen University Khon Kaen40002Thailand
| | | | - Supawan Thawornchinsombut
- Department of Food Technology Faculty of Technology Khon Kaen University Khon Kaen 40002Thailand
- Cardiovascular Research Group Khon Kaen University Khon Kaen40002Thailand
| | - Somporn Katekaew
- Department of Biochemistry Faculty of Science Khon Kaen University Khon Kaen40002Thailand
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Wu Q, Li Y, Peng K, Wang XL, Ding Z, Liu L, Xu P, Liu GQ. Isolation and Characterization of Three Antihypertension Peptides from the Mycelia of Ganoderma Lucidum (Agaricomycetes). JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:8149-8159. [PMID: 31246442 DOI: 10.1021/acs.jafc.9b02276] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Ganoderma lucidum (G. lucidum) has been widely used in Asia to treat hypertension, but the active substances responsible for its antihypertensive effects remain unclear. Using the well-established angiotensin I-converting enzyme (ACE) as a target, we identified three ACE inhibitory peptides (ACEIPs), Gln-Leu-Val-Pro (QLVP), Gln-Asp-Val-Leu (QDVL), and Gln-Leu-Asp-Leu (QLDL), which account for the antihypertensive activity of G. lucidum. Notably, QLVP worked in a mixed-type manner against ACE with an IC50 value of 127.9 μmol/L. Molecular dynamics simulation suggested that the potent charge energy of QLVP, which interacted with Gln242 and Lys472 of ACE via a hydrogen bond and a salt bridge, potentially contributed to ACE inhibitory activity. Moreover, QLVP markedly activated angiotensin I-mediated phosphorylation of endothelial nitric oxide synthase in human umbilical vein endothelial cells and partly reduced mRNA and protein expression of the vasoconstrictor factor endothelin-1. This is the first report of the antihypertensive activity of small ACEIPs originating from G. lucidum mycelia, paving the way for the possible application of these peptides as potent drug candidates for treating hypertension.
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Affiliation(s)
- Qiang Wu
- Hunan Provincial Key Laboratory for Forestry Biotechnology & International Cooperation Base of Science and Technology Innovation on Forest Resource Biotechnology , Central South University of Forestry and Technology , Changsha , 410004 , China
- College of Food and Chemical Engineering , Shaoyang University , Shaoyang , 422000 , China
| | - Yong Li
- Hunan Provincial Key Laboratory for Forestry Biotechnology & International Cooperation Base of Science and Technology Innovation on Forest Resource Biotechnology , Central South University of Forestry and Technology , Changsha , 410004 , China
| | - Kuan Peng
- Hunan Provincial Key Laboratory for Forestry Biotechnology & International Cooperation Base of Science and Technology Innovation on Forest Resource Biotechnology , Central South University of Forestry and Technology , Changsha , 410004 , China
| | - Xiao-Ling Wang
- Hunan Provincial Key Laboratory for Forestry Biotechnology & International Cooperation Base of Science and Technology Innovation on Forest Resource Biotechnology , Central South University of Forestry and Technology , Changsha , 410004 , China
| | - Zhongyang Ding
- National Engineering Laboratory for Cereal Fermentation Technology , Jiangnan University , Wuxi , 214122 , China
| | - Liming Liu
- National Engineering Laboratory for Cereal Fermentation Technology , Jiangnan University , Wuxi , 214122 , China
| | - Peng Xu
- College of Chemical, Biochemical and Environmental Engineering , University of Maryland Baltimore County , Baltimore , Maryland 21201 , United States
| | - Gao-Qiang Liu
- Hunan Provincial Key Laboratory for Forestry Biotechnology & International Cooperation Base of Science and Technology Innovation on Forest Resource Biotechnology , Central South University of Forestry and Technology , Changsha , 410004 , China
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Kumakura K, Hori C, Matsuoka H, Igarashi K, Samejima M. Protein components of water extracts from fruiting bodies of the reishi mushroom Ganoderma lucidum contribute to the production of functional molecules. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2019; 99:529-535. [PMID: 29931755 DOI: 10.1002/jsfa.9211] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 05/30/2018] [Accepted: 06/16/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Mushrooms have been widely considered as health foods as their extracts have anti-hypertensive and anti-tumor activities. After a thorough literature survey, we hypothesized that enzymes in mushroom extracts play an important role in synthesizing functional molecules. Therefore, in this study, proteins extracted from reishi mushroom (Ganoderma lucidum), which is used in oriental medicine, were identified by the proteomic approach, and appropriate extraction methods for improving angiotensin-converting enzyme (ACE) inhibitory activities were investigated. RESULTS Various glycoside hydrolases (GHs), such as β-N-acetylhexosaminidase (GH family 20), α-1,2-mannosidase (GH family 47), endo-β-1,3-glucanase (GH family 128), and β-1,3-glucanase (GH152), that degrade glycans in the fruiting body were identified. The residual glucanase activities generated β-oligosaccharides. Additionally, the glutamic acid protease of the peptidase G1 family was determined as the major protein in the extract, and the residual peptidase activity of the extracts was found to improve ACE inhibitory activities. Finally, it was observed that extraction at 50 °C is suitable for yielding functional molecules with high ACE inhibitory activities. CONCLUSION Water extraction is generally believed to extract only functional macromolecules that exist in mushroom fruiting bodies. This study proposed a new concept that describes how functional molecules are produced by enzymes, including proteases and GHs, during extraction. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Kei Kumakura
- Department of Health and Nutrition, Takasaki University of Health and Welfare, Takasaki-shi, Japan
| | - Chiaki Hori
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo-shi, Japan
| | - Hiroki Matsuoka
- Department of Health and Nutrition, Takasaki University of Health and Welfare, Takasaki-shi, Japan
| | - Kiyohiko Igarashi
- Department of Biomaterials Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
- VTT Technical Research Centre of Finland, Espoo, Finland
| | - Masahiro Samejima
- Department of Biomaterials Sciences, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
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14
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Anti-Obesity Effects of Medicinal and Edible Mushrooms. Molecules 2018; 23:molecules23112880. [PMID: 30400600 PMCID: PMC6278646 DOI: 10.3390/molecules23112880] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 10/29/2018] [Accepted: 11/02/2018] [Indexed: 01/01/2023] Open
Abstract
Obesity is a group of metabolic disorders caused by multiple factors, including heredity, diet, lifestyle, societal determinants, environment, and infectious agents, which can all lead to the enhancement of storage body fat. Excess visceral fat mass in adipose tissue generate several metabolic disorders, including cardiovascular diseases with chronic inflammation based pathophysiology. The objective of the current review is to summarize the cellular mechanisms of obesity that attenuate by antioxidant potentials of medicinal and edible mushrooms. Studies have showed that mushrooms potentially have antioxidant capacities, which increase the antioxidant defense systems in cells. They boost anti-inflammatory actions and thereby protect against obesity-related hypertension and dyslipidemia. The practice of regular consumption of mushrooms is effective in the treatment of metabolic syndrome, including obesity, and thus could be a good candidate for use in future pharmaceutical or nutraceutical applications.
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Shu G, Huang J, Bao C, Meng J, Chen H, Cao J. Effect of Different Proteases on the Degree of Hydrolysis and Angiotensin I-Converting Enzyme-Inhibitory Activity in Goat and Cow Milk. Biomolecules 2018; 8:E101. [PMID: 30262795 PMCID: PMC6316464 DOI: 10.3390/biom8040101] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 09/21/2018] [Accepted: 09/21/2018] [Indexed: 11/16/2022] Open
Abstract
Angiotensin I-converting enzyme (ACE) peptides are bioactive peptides that have important value in terms of research and application in the prevention and treatment of hypertension. While widespread literature is concentrated on casein or whey protein for production of ACE-inhibitory peptides, relatively little information is available on selecting the proper proteases to hydrolyze the protein. In this study, skimmed cow and goat milk were hydrolyzed by four commercial proteases, including alkaline protease, trypsin, bromelain, and papain. Angiotensin I-converting enzyme-inhibitory peptides and degree of hydrolysis (DH) of hydrolysates were measured. Moreover, we compared the difference in ACE-inhibitory activity between cow and goat milk. The results indicated that the DH increased with the increase in hydrolysis time. The alkaline protease-treated hydrolysates exhibited the highest DH value and ACE-inhibitory activity. Additionally, the ACE-inhibitory activity of hydrolysates from goat milk was higher than that of cow milk-derived hydrolysates. Therefore, goat milk is a good source to obtain bioactive peptides with ACE-inhibitory activity, as compared with cow milk. A proper enzyme to produce ACE-inhibitory peptides is important for the development of functional milk products and will provide the theoretical basis for industrial production.
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Affiliation(s)
- Guowei Shu
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China.
| | - Jie Huang
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China.
| | - Chunju Bao
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China.
| | - Jiangpeng Meng
- Department of Research and Development, Xi'an Baiyue Gaot Milk Corp., Ltd., Xi'an 710089, China.
| | - He Chen
- School of Food and Biological Engineering, Shaanxi University of Science and Technology, Xi'an 710021, China.
| | - Jili Cao
- Department of Research and Development, Xi'an Oriental Dairy Co., Ltd., Xi'an 710027, China.
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Characterisation of novel angiotensin-I-converting enzyme inhibitory tripeptide, Gly-Val-Arg derived from mycelium of Pleurotus pulmonarius. Process Biochem 2017. [DOI: 10.1016/j.procbio.2017.07.020] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Zhang P, Roytrakul S, Sutheerawattananonda M. Production and purification of glucosamine and angiotensin-I converting enzyme (ACE) inhibitory peptides from mushroom hydrolysates. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.06.049] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
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18
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Carrasco-González JA, Serna-Saldívar SO, Gutiérrez-Uribe JA. Nutritional composition and nutraceutical properties of the Pleurotus fruiting bodies: Potential use as food ingredient. J Food Compost Anal 2017. [DOI: 10.1016/j.jfca.2017.01.016] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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19
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Manoharan S, Shuib AS, Abdullah N. STRUCTURAL CHARACTERISTICS AND ANTIHYPERTENSIVE EFFECTS OF ANGIOTENSIN-I-CONVERTING ENZYME INHIBITORY PEPTIDES IN THE RENIN-ANGIOTENSIN AND KALLIKREIN KININ SYSTEMS. AFRICAN JOURNAL OF TRADITIONAL, COMPLEMENTARY, AND ALTERNATIVE MEDICINES : AJTCAM 2017; 14:383-406. [PMID: 28573254 PMCID: PMC5446464 DOI: 10.21010/ajtcam.v14i2.39] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
BACKGROUND The commercially available synthetic angiotensin-I-converting enzyme (ACE) inhibitors are known to exert negative side effects which have driven many research groups globally to discover the novel ACE inhibitors. METHOD Literature search was performed within the PubMed, ScienceDirect.com and Google Scholar. RESULTS The presence of proline at the C-terminal tripeptide of ACE inhibitor can competitively inhibit the ACE activity. The effects of other amino acids are less studied leading to difficulties in predicting potent peptide sequences. The broad specificity of the enzyme may be due to the dual active sites observed on the somatic ACE. The inhibitors may not necessarily competitively inhibit the enzyme which explains why some reported inhibitors do not have the common ACE inhibitor characteristics. Finally, the in vivo assay has to be carried out before the peptides as the antihypertensive agents can be claimed. The peptides must be absorbed into circulation without being degraded, which will affect their bioavailability and potency. Thus, peptides with strong in vitro IC50 values do not necessarily have the same effect in vivo and vice versa. CONCLUSION The relationship between peptide amino acid sequence and inhibitory activity, in vivo studies of the active peptides and bioavailability must be studied before the peptides as antihypertensive agents can be claimed.
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Affiliation(s)
- Sivananthan Manoharan
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur
| | - Adawiyah Suriza Shuib
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur
- University of Malaya Centre for Proteomic Research, Faculty of Medicine, University of Malaya, 50603 Kuala Lumpur
| | - Noorlidah Abdullah
- Institute of Biological Sciences, Faculty of Science, University of Malaya, 50603 Kuala Lumpur
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20
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Charoenphun N, Youravong W. Influence of gas-liquid two-phase flow on angiotensin-I converting enzyme inhibitory peptides separation by ultra-filtration. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2017; 97:309-316. [PMID: 27012308 DOI: 10.1002/jsfa.7732] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/09/2016] [Revised: 03/11/2016] [Accepted: 03/21/2016] [Indexed: 06/05/2023]
Abstract
BACKGROUND Membrane fouling is a major problem in ultra-filtration systems and two-phase flow is a promising technique for permeate flux enhancement. The objective of this research was to study the use of an ultra-filtration (UF) system to enrich angiotensin-I converting enzyme (ACE) inhibitory peptides from tilapia protein hydrolysate. To select the most appropriate membrane and operating condition, the effects of membrane molecular weight cut-off (MWCO), transmembrane pressure (TMP) and cross-flow velocity (CFV) on permeate flux and ACE inhibitory peptide separation were studied. Additionally, the gas-liquid two-phase flow technique was applied to investigate its effect on the process capability. RESULTS The results showed that the highest ACE inhibitory activity was obtained from permeate of the 1 kDa membrane. In terms of TMP and CFV, the permeate flux tended to increase with TMP and CFV. The use of gas-liquid two-phase flow as indicated by shear stress number could reduce membrane fouling and increase the permeate flux up to 42%, depending on shear stress number. Moreover, the use of a shear stress number of 0.039 led to an augmentation in ACE inhibitory activity of permeates. CONCLUSIONS Operating conditions using a shear stress number of 0.039 were recommended for enrichment of ACE inhibitory peptides. © 2016 Society of Chemical Industry.
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Affiliation(s)
- Narin Charoenphun
- Department of Natural Product Technology, Faculty of Agricultural Technology, Burapha University Sakaeo Campus, Sakaeo, 27160, Thailand
| | - Wirote Youravong
- Department of Food Technology, Faculty of Agro-Industry, Prince of Songkla University, Hat Yai, 90112, Thailand
- Membrane Science and Technology Research Center, Prince of Songkla University, Hat Yai, 90112, Thailand
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21
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Qiao L, Li B, Chen Y, Li L, Chen X, Wang L, Lu F, Luo G, Li G, Zhang Y. Discovery of Anti-Hypertensive Oligopeptides from Adlay Based on In Silico Proteolysis and Virtual Screening. Int J Mol Sci 2016; 17:E2099. [PMID: 27983650 PMCID: PMC5187899 DOI: 10.3390/ijms17122099] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2016] [Revised: 12/04/2016] [Accepted: 12/07/2016] [Indexed: 12/30/2022] Open
Abstract
Adlay (Coix larchryma-jobi L.) was the commonly used Traditional Chinese Medicine (TCM) with high content of seed storage protein. The hydrolyzed bioactive oligopeptides of adlay have been proven to be anti-hypertensive effective components. However, the structures and anti-hypertensive mechanism of bioactive oligopeptides from adlay were not clear. To discover the definite anti-hypertensive oligopeptides from adlay, in silico proteolysis and virtual screening were implemented to obtain potential oligopeptides, which were further identified by biochemistry assay and molecular dynamics simulation. In this paper, ten sequences of adlay prolamins were collected and in silico hydrolyzed to construct the oligopeptide library with 134 oligopeptides. This library was reverse screened by anti-hypertensive pharmacophore database, which was constructed by our research team and contained ten anti-hypertensive targets. Angiotensin-I converting enzyme (ACE) was identified as the main potential target for the anti-hypertensive activity of adlay oligopeptides. Three crystal structures of ACE were utilized for docking studies and 19 oligopeptides were finally identified with potential ACE inhibitory activity. According to mapping features and evaluation indexes of pharmacophore and docking, three oligopeptides were selected for biochemistry assay. An oligopeptide sequence, NPATY (IC50 = 61.88 ± 2.77 µM), was identified as the ACE inhibitor by reverse-phase high performance liquid chromatography (RP-HPLC) assay. Molecular dynamics simulation of NPATY was further utilized to analyze interactive bonds and key residues. ALA354 was identified as a key residue of ACE inhibitors. Hydrophobic effect of VAL518 and electrostatic effects of HIS383, HIS387, HIS513 and Zn2+ were also regarded as playing a key role in inhibiting ACE activities. This study provides a research strategy to explore the pharmacological mechanism of Traditional Chinese Medicine (TCM) proteins based on in silico proteolysis and virtual screening, which could be beneficial to reveal the pharmacological action of TCM proteins and provide new lead compounds for peptides-based drug design.
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Affiliation(s)
- Liansheng Qiao
- Key Laboratory of TCM Foundation and New Drug Research, School of Chinese Material Medica, University of Chinese Medicine, Beijing 100102, China.
| | - Bin Li
- Key Laboratory of TCM Foundation and New Drug Research, School of Chinese Material Medica, University of Chinese Medicine, Beijing 100102, China.
| | - Yankun Chen
- Key Laboratory of TCM Foundation and New Drug Research, School of Chinese Material Medica, University of Chinese Medicine, Beijing 100102, China.
| | - Lingling Li
- Key Laboratory of TCM Foundation and New Drug Research, School of Chinese Material Medica, University of Chinese Medicine, Beijing 100102, China.
| | - Xi Chen
- Key Laboratory of TCM Foundation and New Drug Research, School of Chinese Material Medica, University of Chinese Medicine, Beijing 100102, China.
| | - Lingzhi Wang
- Key Laboratory of TCM Foundation and New Drug Research, School of Chinese Material Medica, University of Chinese Medicine, Beijing 100102, China.
| | - Fang Lu
- Key Laboratory of TCM Foundation and New Drug Research, School of Chinese Material Medica, University of Chinese Medicine, Beijing 100102, China.
| | - Ganggang Luo
- Key Laboratory of TCM Foundation and New Drug Research, School of Chinese Material Medica, University of Chinese Medicine, Beijing 100102, China.
| | - Gongyu Li
- Key Laboratory of TCM Foundation and New Drug Research, School of Chinese Material Medica, University of Chinese Medicine, Beijing 100102, China.
| | - Yanling Zhang
- Key Laboratory of TCM Foundation and New Drug Research, School of Chinese Material Medica, University of Chinese Medicine, Beijing 100102, China.
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22
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Fu Y, Young JF, Løkke MM, Lametsch R, Aluko RE, Therkildsen M. Revalorisation of bovine collagen as a potential precursor of angiotensin I-converting enzyme (ACE) inhibitory peptides based on in silico and in vitro protein digestions. J Funct Foods 2016. [DOI: 10.1016/j.jff.2016.03.026] [Citation(s) in RCA: 74] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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In vitro angiotensin I converting enzyme inhibition by a peptide isolated from Chiropsalmus quadrigatus Haeckel (box jellyfish) venom hydrolysate. Toxicon 2016; 119:77-83. [PMID: 27163886 DOI: 10.1016/j.toxicon.2016.04.050] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 04/26/2016] [Accepted: 04/28/2016] [Indexed: 11/21/2022]
Abstract
The anti-angiotensin I converting enzyme activity of box jellyfish, Chiropsalmus quadrigatus Haeckel venom hydrolysate was studied. The venom extract was obtained by centrifugation and ultrasonication. Protein concentration of 12.99 μg/mL was determined using Bradford assay. The pepsin and papain hydrolysate was tested for its toxicity by Limit test following the OECD Guideline 425 using 5 female Sprague-Dawley rats. Results showed that the hydrolysate is nontoxic with an LD50 above 2000 mg/kg. In vitro angiotensin I converting enzyme (ACE) inhibitory activity was determined using ACE kit-WST. Isolation of ACE inhibitory peptides using column chromatography with SP-Sephadex G-25 yielded 8 pooled fractions with fraction 3 (86.5%) exhibiting the highest activity. This was followed by reverse phase - high performance liquid chromatography (RP-HPLC) with an octadecyl silica column (Inertsil ODS-3) using methanol:water 15:85 at a flow rate of 1.0 mL/min. Among the 13 fractions separated with the RP-HPLC, fraction 3.5 exhibited the highest ACE inhibitory activity (84.1%). The peptide sequence ACPGPNPGRP (IC50 2.03 μM) from fraction 3.5 was identified using Matrix-assisted laser desorption/ionization with time-of-flight tandem mass spectroscopy analysis (MALDI-TOF/MS).
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24
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A Tricholoma matsutake Peptide with Angiotensin Converting Enzyme Inhibitory and Antioxidative Activities and Antihypertensive Effects in Spontaneously Hypertensive Rats. Sci Rep 2016; 6:24130. [PMID: 27052674 PMCID: PMC4823785 DOI: 10.1038/srep24130] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Accepted: 03/21/2016] [Indexed: 12/11/2022] Open
Abstract
Hypertension is a major risk factor for cardiovascular disease. A crude water extract of the fruiting bodies of a highly prized mushroom Tricholoma matsutakei exerted an antihypertensive action on spontaneously hypertensive rats (SHRs) at a dosage of 400 mg/kg. An angiotensin converting enzyme (ACE) inhibitory peptide with an IC50 of 0.40 μM was purified from the extract and designated as TMP. Its amino acid sequence was elucidated to be WALKGYK through LC-MS/MS analysis. The Lineweaver-Burk plot suggested that TMP was a non-competitive inhibitor of ACE. A short-term assay of antihypertensive activity demonstrated that TMP at the dosage of 25 mg/kg could significantly lower the systolic blood pressure (SBP) of SHRs. TMP exhibited remarkable stability over a wide range of temperatures and pH values. It also demonstrated 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging activity. The aforementioned activities of TMP were corroborated by utilizing the synthetic peptide. Hence T. matsutake can be used as a functional food to help prevent hypertension- associated diseases.
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25
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Al-Obaidi JR. Proteomics of edible mushrooms: A mini-review. Electrophoresis 2016; 37:1257-63. [PMID: 26891916 DOI: 10.1002/elps.201600031] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Revised: 01/22/2016] [Accepted: 02/14/2016] [Indexed: 12/12/2022]
Abstract
Mushrooms are considered an important food for their traditionally famous nutritional and medicinal values, although much information about their potential at the molecular level is unfortunately unknown. Edible mushrooms include fungi that are either collected wild or cultivated. Many important species are difficult to cultivate but attempts have been made with varying degrees of success, with the results showing unsatisfactory economical cultivation methods. Recently, proteomic analysis has been developed as a powerful tool to study the protein content of fungi, particularly basidiomycetes. This mini-review article highlights the contribution of proteomics platforms to the study of edible mushrooms, focusing on the molecular mechanisms involved in developmental stages. This includes extracellular and cytoplasmic effector proteins that have potential or are involved in the synthesis of anticancer, antidiabetic, antioxidant, and antibiotic, in blood pressure control, in the supply of vitamins and minerals, and in other responses to environmental changes. The contribution of different proteomics techniques including classical and more advanced techniques is also highlighted.
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Affiliation(s)
- Jameel R Al-Obaidi
- Agro-biotechnology Institute Malaysia (ABI), c/o MARDI Headquarters, 43400 Serdang, Selangor, Malaysia
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26
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Hayes M, Tiwari BK. Bioactive Carbohydrates and Peptides in Foods: An Overview of Sources, Downstream Processing Steps and Associated Bioactivities. Int J Mol Sci 2015; 16:22485-508. [PMID: 26393573 PMCID: PMC4613320 DOI: 10.3390/ijms160922485] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2015] [Revised: 08/24/2015] [Accepted: 09/01/2015] [Indexed: 12/21/2022] Open
Abstract
Bioactive peptides and carbohydrates are sourced from a myriad of plant, animal and insects and have huge potential for use as food ingredients and pharmaceuticals. However, downstream processing bottlenecks hinder the potential use of these natural bioactive compounds and add cost to production processes. This review discusses the health benefits and bioactivities associated with peptides and carbohydrates of natural origin and downstream processing methodologies and novel processes which may be used to overcome these.
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Affiliation(s)
- Maria Hayes
- The Food BioSciences Department, Teagasc Food Research Centre, Ashtown, Dublin 15, Ireland.
| | - Brijesh K Tiwari
- The Food BioSciences Department, Teagasc Food Research Centre, Ashtown, Dublin 15, Ireland.
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27
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Isolation of an Angiotensin I-Converting Enzyme Inhibitory Protein with Antihypertensive Effect in Spontaneously Hypertensive Rats from the Edible Wild Mushroom Leucopaxillus tricolor. Molecules 2015; 20:10141-53. [PMID: 26039337 PMCID: PMC6272794 DOI: 10.3390/molecules200610141] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Accepted: 05/28/2015] [Indexed: 11/24/2022] Open
Abstract
An 86-kDa homodimeric angiotensin I-converting enzyme (ACE) inhibitory protein designated as LTP was isolated from fruit bodies of the mushroom Leucopaxillus tricolor. The isolation procedure involved ultrafiltration through a membrane with a molecular weight cutoff of 10-kDa, ion exchange chromatography on Q-Sepharose, and finally fast protein liquid chromatography-gel filtration on Superdex 75. LTP exhibited an IC50 value of 1.64 mg∙mL−1 for its ACE inhibitory activity. The unique N-terminal amino acid sequence of LTP was disclosed by Edman degradation to be DGPTMHRQAVADFKQ. In addition, seven internal sequences of LTP were elucidated by liquid chromatography-tandem mass spectrometry (LC-MS/MS) analysis. Results of the Lineweaver-Burk plot suggested that LTP competitively inhibited ACE. Both LTP and the water extract of L. tricolor exhibited a clear antihypertensive effect on spontaneously hypertensive rats.
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28
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Tran HB, Yamamoto A, Matsumoto S, Ito H, Igami K, Miyazaki T, Kondo R, Shimizu K. Hypotensive effects and angiotensin-converting enzyme inhibitory peptides of reishi (Ganoderma lingzhi) auto-digested extract. Molecules 2014; 19:13473-85. [PMID: 25178067 PMCID: PMC6271714 DOI: 10.3390/molecules190913473] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Revised: 07/14/2014] [Accepted: 08/25/2014] [Indexed: 11/23/2022] Open
Abstract
Reishi (Ganoderma lingzhi) has been used as a traditional medicine for millennia. However, relatively little is known about this mushroom’s proteins and their bioactivities. In this study, we used reishi’s own proteases to hydrolyze its protein and obtained auto-digested reishi (ADR) extract. The extract was subjected to in vitro assays and administered to spontaneous hypertensive rats (SHRs) to determine its potential for use as a hypotensive medication. Bioassay-guided fractionation and de novo sequencing were used for identifying the active compounds. After 4 h administration of ADR, the systolic pressure of SHRs significantly decreased to 34.3 mmHg (19.5% change) and the effect was maintained up to 8 h of administration, with the decrease reaching as low as 26.8 mmHg (15% reduction–compare to base line a decrease of 26.8 mmHg is less than a decrease of 34.3 mmHg so it should give a smaller % reduction). Eleven peptides were identified and four of them showed potent inhibition against ACE with IC50 values ranging from 73.1 μM to 162.7 μM. The results showed that ADR could be a good source of hypotensive peptides that could be used for antihypertensive medication or incorporation into functional foods.
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Affiliation(s)
- Hai-Bang Tran
- Faculty of Agriculture, Kyushu University, Fukuoka 812-8581, Japan.
| | - Atsushi Yamamoto
- Faculty of Agriculture, Kyushu University, Fukuoka 812-8581, Japan.
| | - Sayaka Matsumoto
- Faculty of Agriculture, Kyushu University, Fukuoka 812-8581, Japan.
| | - Hisatomi Ito
- Beauty Care Products Division, Nagase & Co. Ltd., Nishi-ku, Kobe, 651-2241, Japan.
| | - Kentaro Igami
- Beauty Care Products Division, Nagase & Co. Ltd., Nishi-ku, Kobe, 651-2241, Japan.
| | - Toshitsugu Miyazaki
- Beauty Care Products Division, Nagase & Co. Ltd., Nishi-ku, Kobe, 651-2241, Japan.
| | - Ryuichiro Kondo
- Faculty of Agriculture, Kyushu University, Fukuoka 812-8581, Japan.
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Angiotensin I-converting enzyme inhibitor derived from cross-linked oyster protein. BIOMED RESEARCH INTERNATIONAL 2014; 2014:379234. [PMID: 25140307 PMCID: PMC4130196 DOI: 10.1155/2014/379234] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/11/2014] [Revised: 06/07/2014] [Accepted: 06/24/2014] [Indexed: 11/23/2022]
Abstract
Following cross-linking by microbial transglutaminase, modified oyster proteins were hydrolyzed to improve inhibitory activity against angiotensin-converting enzyme (ACE) inhibitory activity with the use of a single protease, or a combination of six proteases. The oyster hydrolysate with the lowest 50% ACE inhibitory concentration (IC50) of 0.40 mg/mL was obtained by two-step hydrolysis of the cross-linked oyster protein using Protamex and Neutrase. Five ACE inhibitory peptides were purified from the oyster hydrolysate using a multistep chromatographic procedure comprised of ion-exchange, size exclusion, and reversed-phase liquid chromatography. Their sequences were identified as TAY, VK, KY, FYN, and YA, using automated Edman degradation and mass spectrometry. These peptides were synthesized, and their IC50 values were measured to be 16.7, 29.0, 51.5, 68.2, and 93.9 μM, respectively. Toxicity of the peptides on the HepG2 cell line was not detected. The oyster hydrolysate also significantly decreased the systolic blood pressure of spontaneously hypertensive rats (SHR). The antihypertensive effect of the oyster hydrolysate on SHR was rapid and long-lasting, compared to commercially obtained sardine hydrolysate. These results suggest that the oyster hydrolysate could be a source of effective nutraceuticals against hypertension.
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