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Ochiai A. Discovery of new functions of food proteins and their structural development for multifunctional applications. Biosci Biotechnol Biochem 2023; 87:1102-1110. [PMID: 37480241 DOI: 10.1093/bbb/zbad098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2023] [Accepted: 07/11/2023] [Indexed: 07/23/2023]
Abstract
Proteins and peptides derived from various food sources are used in a variety of applications, including functional foods, pharmaceuticals, and cosmetics. The three-dimensional structure of proteins provides useful insights into their functions and essential information for the creation of proteins with new functions. In this review, a series of functional conversion technologies based on protein structural information derived from foods traditionally consumed in Japan, such as natto (fermented soybeans) and rice, are introduced. For natto, we first identified 2 types of Bacillus subtilis-derived endolytic and exolytic enzymes with different modes of action on soybean cell wall polysaccharides and then focused on the technology used to create an endolytic enzyme from an exolytic enzyme. By applying this technology, a method for creating novel bioactive peptides from rice seed proteins was established. The modified peptides created could provide diverse options for the production of substances such as pharmaceuticals and cosmetic materials.
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Affiliation(s)
- Akihito Ochiai
- Department of Materials Science and Technology, Faculty of Engineering, Niigata University, Niigata, Japan
- Graduate School of Science and Technology, Niigata University, Niigata, Japan
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Acharya Y, Taneja KK, Haldar J. Dual functional therapeutics: mitigating bacterial infection and associated inflammation. RSC Med Chem 2023; 14:1410-1428. [PMID: 37593575 PMCID: PMC10429821 DOI: 10.1039/d3md00166k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2023] [Accepted: 05/21/2023] [Indexed: 08/19/2023] Open
Abstract
The emergence of antimicrobial resistance, coupled with the occurrence of persistent systemic infections, has already complicated clinical therapy efforts. Moreover, infections are also accompanied by strong inflammatory responses, generated by the host's innate and adaptive immune systems. The closely intertwined relationship between bacterial infection and inflammation has multiple implications on the ability of antibacterial therapeutics to tackle infection and inflammation. Particularly, uncontrolled inflammatory responses to infection can lead to sepsis, a life-threatening physiological condition. In this review, we discuss dual-functional antibacterial therapeutics that have potential to be developed for treating inflammation associated with bacterial infections. Immense research is underway that aims to develop new therapeutic agents that, when administered, regulate the excess inflammatory response, i.e. they have immunomodulatory properties along with the desired antibacterial activity. The classes of antibiotics that have immunomodulatory function in addition to antibacterial activity have been reviewed. Host defense peptides and their synthetic mimics are amongst the most sought-after solutions to develop such dual-functional therapeutics. This review also highlights the important classes of peptidomimetics that exhibit both antibacterial and immunomodulatory properties.
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Affiliation(s)
- Yash Acharya
- Antimicrobial Research Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur Bengaluru 560064 Karnataka India
| | - Kashish Kumar Taneja
- Antimicrobial Research Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur Bengaluru 560064 Karnataka India
| | - Jayanta Haldar
- Antimicrobial Research Laboratory, New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur Bengaluru 560064 Karnataka India
- School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research (JNCASR) Jakkur Bengaluru 560064 Karnataka India
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Peptide Designs for Use in Caries Management: A Systematic Review. Int J Mol Sci 2023; 24:ijms24044247. [PMID: 36835657 PMCID: PMC9961499 DOI: 10.3390/ijms24044247] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 02/03/2023] [Accepted: 02/13/2023] [Indexed: 02/23/2023] Open
Abstract
The objective of this study was to review the design methods that have been used to create peptides for use in caries management. Two independent researchers systematically reviewed many in vitro studies in which peptides were designed for use in caries management. They assessed the risk of bias in the included studies. This review identified 3592 publications, of which 62 were selected. Forty-seven studies reported 57 antimicrobial peptides. Among them, 31 studies (66%, 31/47) used the template-based design method; 9 studies (19%, 9/47) used the conjugation method; and 7 studies (15%, 7/47) used other methods, such as the synthetic combinatorial technology method, the de novo design method and cyclisation. Ten studies reported mineralising peptides. Seven of these (70%, 7/10) used the template-based design method, two (20%, 2/10) used the de novo design method, and one study (10%, 1/10) used the conjugation method. In addition, five studies developed their own peptides with antimicrobial and mineralising properties. These studies used the conjugation method. Our assessment for the risk of bias in the 62 reviewed studies showed that 44 publications (71%, 44/62) had a medium risk and that 3 publications had a low risk (5%, 3/62). The two most common methods for developing peptides for use in caries management that were used in these studies were the template-based design method and the conjugation method.
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Hagawa H, Imai K, Gao Z, Taniguchi M, Shimizu K, Honda H. Selective concentration of antimicrobial peptides to heat-treated porous silica gel using adsorption/desorption. J Biosci Bioeng 2021; 133:161-167. [PMID: 34848124 DOI: 10.1016/j.jbiosc.2021.11.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/19/2021] [Accepted: 11/05/2021] [Indexed: 11/16/2022]
Abstract
Heat-treated porous silica gel (HT silica gel) previously developed by our group has selectively adsorbed cationic peptides at a pH of 7. Therefore, we focused on the use of antimicrobial peptides (AMPs) as bioactive peptides (BPs). First, 32 AMPs and 32 randomly designed peptides were generated using Fmoc solid synthesis, and their adsorption ratio to HT-silica gel was investigated. Thirty two AMPs showed a relatively higher adsorption ratio of 58.8% compared to that of randomly designed peptides, which was 35.3%. Desorption conditions were investigated using Amyl-1-18 antimicrobial peptides. Next, pepsin hydrolysate from rice endosperm protein (REP) powder was prepared by ourselves. The REP hydrolysate containing dry matter (7.5 mg) was applied to the adsorption/desorption (AD) procedure using HT silica gel to obtain 1.6 mg of AD hydrolysate. When the two hydrolysates were subjected to mass spectrometry, 305 concentrated peptides were obtained. In total, 26 peptides with high content and high enrichment ratios were listed and synthesized. When the antimicrobial activity of these 26 peptides was evaluated using Cutibacterium acnes, five peptides consisting of 12-27 amino acids were identified as novel AMPs. Two of these peptides, which were derived from rice glutelin, showed antimicrobial activity against all four microbes, including Porphyromonas gingivalis, Escherichia coli, and Streptococcus mutans. In the present study, we showed that AMPs could be easily enriched from protein hydrolysate using HT silica gel. The adsorption/desorption procedure using HT silica gel was confirmed to be a useful tool for convenient BP separation.
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Affiliation(s)
- Hitomi Hagawa
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Kento Imai
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Ziwei Gao
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Masayuki Taniguchi
- Department of Liberal Studies, Niigata Seiryo University Junior College, 1-5939 Suido-cho, Chuo-ku, Niigata 951-8121, Japan
| | - Kazunori Shimizu
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan
| | - Hiroyuki Honda
- Department of Biomolecular Engineering, Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
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Niu JY, Yin IX, Wu WKK, Li QL, Mei ML, Chu CH. Antimicrobial peptides for the prevention and treatment of dental caries: A concise review. Arch Oral Biol 2020; 122:105022. [PMID: 33418434 DOI: 10.1016/j.archoralbio.2020.105022] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 12/04/2020] [Accepted: 12/05/2020] [Indexed: 10/22/2022]
Abstract
The objective of this study was to perform a comprehensive review of the use of antimicrobial peptides for the prevention and treatment of dental caries. The study included publications in the English language that addressed the use of antimicrobial peptides in the prevention and treatment of caries. These publications were also searchable on PubMed, Web of Science, Embase, Scopus, the Collection of Anti-Microbial Peptides and the Antimicrobial Peptide Database. A total of 3,436 publications were identified, and 67 publications were included. Eight publications reported seven natural human antimicrobial peptides as bactericidal to Streptococcus mutans. Fifty-nine publications reported 43 synthetic antimicrobial peptides developed to mimic natural antimicrobial peptides, fusing peptides with functional sequences and implementing new designs. The 43 synthetic antimicrobial peptides were effective against Streptococcus mutans, and nine peptides specifically targeted Streptococcus mutans. Ten antimicrobial peptides had an affinity for hydroxyapatite to prevent bacterial adhesion. Six antimicrobial peptides were also antifungal. Four antimicrobial peptides promoted remineralisation or prevented the demineralisation of teeth by binding calcium to hydroxyapatite. In conclusion, this study identified 67 works in the literature that reported seven natural and 43 synthetic antimicrobial peptides for the prevention and treatment of caries. Most of the antimicrobial peptides were bactericidal, and some prevented bacterial adhesion. A few antimicrobial peptides displayed remineralising properties with hydroxyapatite.
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Affiliation(s)
- John Yun Niu
- Faculty of Dentistry, The University of Hong Kong, Hong Kong, China.
| | - Iris Xiaoxue Yin
- Faculty of Dentistry, The University of Hong Kong, Hong Kong, China.
| | - William Ka Kei Wu
- Department of Anaesthesia & Intensive Care, The Chinese University of Hong Kong, Hong Kong, China.
| | - Quan-Li Li
- School of Stomatology, Anhui Medical University, Hefei, China.
| | - May Lei Mei
- Faculty of Dentistry, The University of Hong Kong, Hong Kong, China; Faculty of Dentistry, University of Otago, Dunedin, New Zealand.
| | - Chun Hung Chu
- Faculty of Dentistry, The University of Hong Kong, Hong Kong, China.
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Matsugishi A, Aoki-Nonaka Y, Yokoji-Takeuchi M, Yamada-Hara M, Mikami Y, Hayatsu M, Terao Y, Domon H, Taniguchi M, Takahashi N, Yamazaki K, Tabeta K. Rice peptide with amino acid substitution inhibits biofilm formation by Porphyromonas gingivalis and Fusobacterium nucleatum. Arch Oral Biol 2020; 121:104956. [PMID: 33157493 DOI: 10.1016/j.archoralbio.2020.104956] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 09/12/2020] [Accepted: 10/11/2020] [Indexed: 11/19/2022]
Abstract
OBJECTIVE Rice peptide has antibacterial properties that have been tested in planktonic bacterial culture. However, bacteria form biofilm at disease sites and are resistant to antibacterial agents. The aim of this study was to clarify the mechanisms of action of rice peptide and its amino acid substitution against periodontopathic bacteria and their antibiofilm effects. DESIGN Porphyromonas gingivalis and Fusobacterium nucleatum were treated with AmyI-1-18 rice peptide or its arginine-substituted analog, G12R, under anaerobic conditions. The amount of biofilm was evaluated by crystal violet staining. The integrity of the bacteria cytoplasmic membrane was studied in a propidium iodide (PI) stain assay and transmission electron microscopy (TEM). RESULTS Both AmyI-1-18 and G12R inhibited biofilm formation of P. gingivalis and F. nucleatum; in particular, G12R inhibited F. nucleatum at lower concentrations. However, neither peptide eradicated established biofilms significantly. According to the minimum inhibitory concentration and minimum bactericidal concentration against P. gingivalis, AmyI-1-18 has bacteriostatic properties and G12R has bactericidal activity, and both peptides showed bactericidal activity against F. nucleatum. PI staining and TEM analysis indicated that membrane disruption by G12R was enhanced, which suggests that the replacement amino acid reinforced the electostatic interaction between the peptide and bacteria by increase of cationic charge and α-helix content. CONCLUSIONS Rice peptide inhibited biofilm formation of P. gingivalis and F. nucleatum, and bactericidal activity via membrane destruction was enhanced by amino acid substitution.
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Affiliation(s)
- Aoi Matsugishi
- Division of Periodontology, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, 2-5274 Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan; Research Unit for Oral-Systemic Connection, Division of Oral Science for Health Promotion, Niigata University Graduate School of Medical and Dental Sciences, 2-5274 Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan
| | - Yukari Aoki-Nonaka
- Division of Periodontology, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, 2-5274 Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan.
| | - Mai Yokoji-Takeuchi
- Division of Periodontology, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, 2-5274 Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan
| | - Miki Yamada-Hara
- Division of Periodontology, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, 2-5274 Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan
| | - Yoshikazu Mikami
- Division of Microscopic Anatomy, Niigata University Graduate School of Medical and Dental Sciences, 757 Asahimachi-dori 1, Chuo-ku, Niigata City, 951-9510, Japan
| | - Manabu Hayatsu
- Division of Microscopic Anatomy, Niigata University Graduate School of Medical and Dental Sciences, 757 Asahimachi-dori 1, Chuo-ku, Niigata City, 951-9510, Japan
| | - Yutaka Terao
- Division of Microbiology and Infectious Diseases, Niigata University Graduate School of Medical and Dental Sciences, 2-5274 Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan
| | - Hisanori Domon
- Division of Microbiology and Infectious Diseases, Niigata University Graduate School of Medical and Dental Sciences, 2-5274 Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan
| | - Masayuki Taniguchi
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, 8050 Ikarashi 2-no-cho, Nishi-ku, Niigata, 950-2181, Japan
| | - Naoki Takahashi
- Division of Periodontology, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, 2-5274 Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan
| | - Kazuhisa Yamazaki
- Research Unit for Oral-Systemic Connection, Division of Oral Science for Health Promotion, Niigata University Graduate School of Medical and Dental Sciences, 2-5274 Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan
| | - Koichi Tabeta
- Division of Periodontology, Faculty of Dentistry & Graduate School of Medical and Dental Sciences, Niigata University, 2-5274 Gakkocho-dori, Chuo-ku, Niigata, 951-8514, Japan.
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Antimicrobial Effect of a Peptide Containing Novel Oral Spray on Streptococcus mutans. BIOMED RESEARCH INTERNATIONAL 2020; 2020:6853652. [PMID: 32258136 PMCID: PMC7086434 DOI: 10.1155/2020/6853652] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 01/17/2020] [Accepted: 02/04/2020] [Indexed: 02/05/2023]
Abstract
Objective To investigate the antibacterial effect of a novel antimicrobial peptide containing oral spray GERM CLEAN on Streptococcus mutans (S. mutans) in vitro and further explore the related mechanisms at phenotypic and transcriptional levels. Methods The disk diffusion method was used to preliminarily appraise the antimicrobial effect of GERM CLEAN. The minimal inhibitory concentration (MIC) of GREM CLEAN towards S. mutans was determined by the broth dilution method. S. mutans was determined by the broth dilution method. Results The diameter (10.18 ± 1.744 mm) of inhibition zones formed by GERM CLEAN preliminarily indicated its inhibitory effect on the major cariogenic bacteria S. mutans was determined by the broth dilution method. S. mutans was determined by the broth dilution method. S. mutans was determined by the broth dilution method. S. mutans was determined by the broth dilution method. gtfB, gtfC, gtfD, and ldh were significantly repressed by treating with GERM CLEAN, and this was consistent with our phenotypic results. Conclusion The novel antimicrobial peptide containing oral spray GERM CLEAN has an anti-Streptococcus mutans effect and the inhibitory property may be due to suppression of the virulence factors of S. mutans including adhesive, acidogenicity, EPS, and biofilm formation.Streptococcus mutans effect and the inhibitory property may be due to suppression of the virulence factors of S. mutans including adhesive, acidogenicity, EPS, and biofilm formation.S. mutans was determined by the broth dilution method.
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Taniguchi M, Aida R, Saito K, Kikura T, Ochiai A, Saitoh E, Tanaka T. Identification and characterization of multifunctional cationic peptides from enzymatic hydrolysates of soybean proteins. J Biosci Bioeng 2020; 129:59-66. [PMID: 31324383 DOI: 10.1016/j.jbiosc.2019.06.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2019] [Revised: 06/17/2019] [Accepted: 06/26/2019] [Indexed: 12/30/2022]
Abstract
In this study, we used the commercial soybean protein hydrolysate Hinute-DC6 as a novel starting material from which to purify and identify multifunctional cationic peptides. After fractionation, Hinute-DC6 was separated into 20 fractions with varying isoelectric points (pI) by ampholyte-free isoelectric focusing (autofocusing). Subsequently, we purified and identified the cationic peptides from fractions 19 and 20, which had pI values greater than 12, using reversed-phase high-performance liquid chromatography and matrix-assisted laser/desorption ionization-time-of-flight mass spectrometry. Of the 83 cationic peptides identified, 14 had high pI values and net charges greater than +2, and were chemically synthesized and assayed for various bioactivities, including hemolytic, antimicrobial, lipopolysaccharide (LPS)-neutralizing, and angiogenic activities. None of the 14 cationic peptides tested exhibited hemolytic activity toward mammalian red blood cells at concentrations up to 1000 μM. Five of the cationic peptides exhibited antimicrobial activities against at least one of four human-pathogenic microorganisms tested. In addition, in chromogenic LPS-neutralizing assays using Limulus amebocyte lysates, the 50% effective concentrations of these 14 peptides were between 0.069 and 5.2 μM. Tube-formation assays in human umbilical vein endothelial cells showed that each of the 14 cationic peptides exhibited significant angiogenic activities at 10 μM, with values similar to those of the positive control LL-37. Our results demonstrate that the 14 identified cationic peptides have multiple functions with negligible hemolytic activity. These data indicate that the cationic peptides isolated from Hinute-DC6 and fractions containing these cationic peptides have the potential to be used as multifunctional ingredients for healthcare applications.
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Affiliation(s)
- Masayuki Taniguchi
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan.
| | - Ryousuke Aida
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
| | - Kazuki Saito
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
| | - Toyotaka Kikura
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
| | - Akihito Ochiai
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
| | - Eiichi Saitoh
- Graduate School of Technology, Niigata Institute of Technology, Niigata 945-1195, Japan
| | - Takaaki Tanaka
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
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Dong N, Wang C, Li X, Guo Y, Li X. Simplified Head-to-Tail Cyclic Polypeptides as Biomaterial-Associated Antimicrobials with Endotoxin Neutralizing and Anti-Inflammatory Capabilities. Int J Mol Sci 2019; 20:ijms20235904. [PMID: 31775224 PMCID: PMC6928678 DOI: 10.3390/ijms20235904] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 11/15/2019] [Accepted: 11/20/2019] [Indexed: 12/21/2022] Open
Abstract
The therapeutic application of antimicrobial peptides (AMPs), a potential type of peptide-based biomaterial, is impeded by their poor antimicrobial activity and potential cytotoxicity as a lack of understanding of their structure–activity relationships. In order to comprehensively enhance the antibacterial and clinical application potency of AMPs, a rational approach was applied to design amphiphilic peptides, including head-to-tail cyclic, linear and D-proline antimicrobial peptides using the template (IR)nP(IR)nP (n = 1, 2 and 3). Results showed that these amphiphilic peptides demonstrated antimicrobial activity in a size-dependent manner and that cyclic peptide OIR3, which contained three repeating units (IR)3, had greater antimicrobial potency and cell selectivity than liner peptide IR3, DIR3 with D-Pro and gramicidin S (GS). Surface plasmon resonance and endotoxin neutralization assays indicated that OIR3 had significant endotoxin neutralization capabilities, which suggested that the effects of OIR3 were mediated by binding to lipopolysaccharides (LPS). Using fluorescence spectrometry and electron microscopy, we found that OIR3 strongly promoted membrane disruption and thereby induced cell lysis. In addition, an LPS-induced inflammation assay showed that OIR3 inhibited the pro-inflammatory factor TNF-α in RAW264.7 cells. OIR3 was able to reduce oxazolone-induced skin inflammation in allergic dermatitis mouse model via the inhibition of TNF-α, IL-1β and IL-6 mRNA expression. Collectively, the engineered head-to-tail cyclic peptide OIR3 was considerable potential candidate for use as a clinical therapeutic for the treatment of bacterial infections and skin inflammation.
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Affiliation(s)
- Na Dong
- The Laboratory of Molecular Nutrition and Immunity, Institute of Animal Nutrition, Northeast Agricultural University, Harbin 150030, China; (N.D.); (C.W.); (X.L.)
| | - Chensi Wang
- The Laboratory of Molecular Nutrition and Immunity, Institute of Animal Nutrition, Northeast Agricultural University, Harbin 150030, China; (N.D.); (C.W.); (X.L.)
| | - Xinran Li
- The Laboratory of Molecular Nutrition and Immunity, Institute of Animal Nutrition, Northeast Agricultural University, Harbin 150030, China; (N.D.); (C.W.); (X.L.)
| | - Yuming Guo
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
- Correspondence: ; Tel.: +(86-010)-6273-3900
| | - Xiaoli Li
- Heilongjiang Key Laboratory of Molecular Design and Preparation of Flame Retarded Materials, College of Science, Northeast Forestry University, Harbin 150040, China;
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Aoki-Nonaka Y, Tabeta K, Yokoji M, Matsugishi A, Matsuda Y, Takahashi N, Sulijaya B, Domon H, Terao Y, Taniguchi M, Yamazaki K. A peptide derived from rice inhibits alveolar bone resorption via suppression of inflammatory cytokine production. J Periodontol 2019; 90:1160-1169. [PMID: 31032912 DOI: 10.1002/jper.18-0630] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2018] [Revised: 02/01/2019] [Accepted: 02/02/2019] [Indexed: 12/15/2022]
Abstract
BACKGROUND Periodontitis is an inflammatory disease that results in alveolar bone resorption due to inflammatory cytokine production induced by bacterial antigens such as lipopolysaccharides (LPS). Here, the preventive effect of the Amyl-1-18 peptide derived from rice in an experimental model of periodontitis and the effect on the anti-inflammatory response were assessed. METHODS Alveolar bone resorption, gene transcription of proinflammatory cytokines in the gingiva, and the endotoxin level in the oral cavity were evaluated after oral administration of the Amyl-1-18 peptide for 14 days using a ligature-induced periodontitis model in mice. Additionally, murine macrophages were incubated with LPS of Escherichia coli or Porphyromonas gingivalis in the presence of Amyl-1-18 to analyze the suppressive effects of Amyl-1-18 on the cell signaling pathways associated with proinflammatory cytokine production, including inflammasome activities. RESULTS Oral administration of Amyl-1-18 suppressed alveolar bone resorption and gene transcription of interleukin (il)6 in the gingiva of the periodontitis model, and decreased endotoxin levels in the oral cavity, suggesting modulation of periodontal inflammation by inhibition of endotoxin activities in vivo. Also, Amyl-1-18 suppressed IL-6 production induced by LPS and recombinant IL-1β in macrophages in vitro but had no effect on inflammasome activity. CONCLUSIONS The Amyl-1-18 peptide from rice inhibited alveolar bone destruction in mouse periodontitis model via suppressing inflammatory cytokine production induced by LPS. It was suggested that Amyl-1-18 peptide has anti-inflammatory property against LPS, not only by neutralization of LPS and subsequent inhibition of nuclear factor-κB signaling but also by inhibition of the IL-1R-related signaling cascade.
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Affiliation(s)
- Yukari Aoki-Nonaka
- Division of Periodontology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Koichi Tabeta
- Division of Periodontology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Mai Yokoji
- Division of Periodontology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Research Unit for Oral-Systemic Connection, Division of Oral Science for Health Promotion, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Aoi Matsugishi
- Division of Periodontology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Research Unit for Oral-Systemic Connection, Division of Oral Science for Health Promotion, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yumi Matsuda
- Division of Periodontology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Naoki Takahashi
- Division of Periodontology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Research Center for Advanced Oral Science, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Benso Sulijaya
- Division of Periodontology, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Research Unit for Oral-Systemic Connection, Division of Oral Science for Health Promotion, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan.,Department of Periodontology, Faculty of Dentistry, Universitas Indonesia, Jakarta, Indonesia
| | - Hisanori Domon
- Division of Microbiology and Infectious Diseases, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Yutaka Terao
- Division of Microbiology and Infectious Diseases, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
| | - Masayuki Taniguchi
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata, Japan
| | - Kazuhisa Yamazaki
- Research Unit for Oral-Systemic Connection, Division of Oral Science for Health Promotion, Niigata University Graduate School of Medical and Dental Sciences, Niigata, Japan
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Taniguchi M, Noda Y, Aida R, Saito K, Ochiai A, Saitoh E, Tanaka T. Cationic peptides from enzymatic hydrolysates of soybean proteins exhibit LPS-neutralizing and angiogenic activities. J Biosci Bioeng 2019; 127:176-182. [PMID: 30075939 DOI: 10.1016/j.jbiosc.2018.07.013] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 07/05/2018] [Accepted: 07/16/2018] [Indexed: 10/28/2022]
Abstract
In this study, we prepared fractions containing multifunctional cationic peptides by separating the commercial soybean protein hydrolysate Hinute-AM into 20 fractions. These fractions contained peptides with various isoelectric points (pI), as indicated by ampholyte-free isoelectric focusing (autofocusing). Thus, we purified and identified the cationic peptides from fractions 19 and 20, which had pH values greater than 10, using reversed-phase high-performance liquid chromatography and matrix-assisted laser/desorption ionization-time-of-flight mass spectroscopy. Among 19 identified cationic peptides, NKNAKPPSPR, PGKKNAIV, KSGPGMSPR, NVSKPPRVV, RKVGAGGRKPLG, and LPCVIGGVPKRV had high pI values and were included as chemically synthesized peptides in assays of various functions, including lipopolysaccharide (LPS)-neutralizing and angiogenic activities. Chromogenic LPS-neutralizing assays using Limulus amebocyte lysates showed that 50% effective concentrations of these six peptides were between 1.63 and 2.65 μM, and were higher than that (0.12 μM) of polymyxin B. Moreover, in tube-formation assays in human umbilical vein endothelial cells, all of the six cationic peptides except LPCVIGGVPKRV exhibited angiogenic activities similar to those of the positive control LL-37. In addition, the six identified cationic peptides had no hemolytic activity at concentrations up to 500 μM in mammalian red blood cells. Our results demonstrate that five of the identified cationic peptides, excluding LPCVIGGVPKRV, have multiple functions and little or no hemolytic activity. These data indicate that fractions containing cationic peptides from Hinute-AM have the potential to be used as dietary supplements and functional ingredients in food products.
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Affiliation(s)
- Masayuki Taniguchi
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan.
| | - Yusuke Noda
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
| | - Ryousuke Aida
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
| | - Kazuki Saito
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
| | - Akihito Ochiai
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
| | - Eiichi Saitoh
- Graduate School of Technology, Niigata Institute of Technology, Niigata 945-1195, Japan
| | - Takaaki Tanaka
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
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12
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Wang Y, Zeng Y, Wang Y, Li H, Yu S, Jiang W, Li Y, Zhang L. Antimicrobial peptide GH12 targets Streptococcus mutans to arrest caries development in rats. J Oral Microbiol 2018. [DOI: 10.1080/20002297.2018.1549921] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Affiliation(s)
- Yufei Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Centre for Oral Disease, Sichuan University, Chengdu, China
- Department of Cariology and Endodontics West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yuhao Zeng
- State Key Laboratory of Oral Diseases & National Clinical Research Centre for Oral Disease, Sichuan University, Chengdu, China
| | - Yuanjing Wang
- State Key Laboratory of Oral Diseases & National Clinical Research Centre for Oral Disease, Sichuan University, Chengdu, China
| | - Haoran Li
- State Key Laboratory of Oral Diseases & National Clinical Research Centre for Oral Disease, Sichuan University, Chengdu, China
- Department of Cariology and Endodontics West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Sihan Yu
- State Key Laboratory of Oral Diseases & National Clinical Research Centre for Oral Disease, Sichuan University, Chengdu, China
| | - Wentao Jiang
- State Key Laboratory of Oral Diseases & National Clinical Research Centre for Oral Disease, Sichuan University, Chengdu, China
- Department of Cariology and Endodontics West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yingxue Li
- State Key Laboratory of Oral Diseases & National Clinical Research Centre for Oral Disease, Sichuan University, Chengdu, China
- Department of Cariology and Endodontics West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Linglin Zhang
- State Key Laboratory of Oral Diseases & National Clinical Research Centre for Oral Disease, Sichuan University, Chengdu, China
- Department of Cariology and Endodontics West China Hospital of Stomatology, Sichuan University, Chengdu, China
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13
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Taniguchi M, Ochiai A, Namae T, Saito K, Kato T, Saitoh E, Tanaka T. The antimicrobial and anti-endotoxic peptide AmyI-1-18 from rice α-amylase and its [N3L] analog promote angiogenesis and cell migration. Peptides 2018; 104:78-84. [PMID: 29709624 DOI: 10.1016/j.peptides.2018.04.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 04/23/2018] [Accepted: 04/26/2018] [Indexed: 01/18/2023]
Abstract
In our previous studies, we showed that AmyI-1-18 and its single amino acid-substituted analogs have antimicrobial, anti-inflammatory, and anti-endotoxic activities and cause little or no hemolysis or cytotoxicity. In this study, we investigated the potential of these peptides to promote proliferation, angiogenesis (tube formation), and migration in human umbilical vein endothelial cells (HUVECs). Among five single amino acid-substituted analogs, [N3L]AmyI-1-18 induced cell proliferation in a concentration-dependent manner with similar efficacy to AmyI-1-18. In tube formation assays, AmyI-1-18 and [N3L]AmyI-1-18 had angiogenic activities at 1 μM and their effects were similar to those of LL-37. Moreover, scratch migration assays showed that AmyI-1-18, [N3L]AmyI-1-18, and LL-37 promote cell migration with optimum concentrations of 10, 1, and 0.1 μM, respectively. Subsequently, we performed tube formation assays using HUVECs pretreated with SU5416, which is an inhibitor of vascular endothelial growth factor (VEGF) receptors, and revealed that AmyI-1-18 and [N3L]AmyI-1-18 induce angiogenesis by activating VEGF receptors. Similarly, after pretreating HUVECs with mitomycin C, which inhibits cell proliferation, [N3L]AmyI-1-18 significantly contributed to wound closure in scratch migration assays. Moreover, enhancements of hydrophobicity following substitution of AmyI-1-18 asparagine with leucine led to greater increases in cell migration. The present data indicate that both peptides, particularly [N3L]AmyI-1-18, are candidates for use as wound healing agents.
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Affiliation(s)
- Masayuki Taniguchi
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan.
| | - Akihito Ochiai
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
| | - Toshiki Namae
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
| | - Kazuki Saito
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
| | - Tetsuo Kato
- Department of Chemistry, Tokyo Dental College, Tokyo 101-0062, Japan
| | - Eiichi Saitoh
- Graduate School of Technology, Niigata Institute of Technology, Niigata 945-1195, Japan
| | - Takaaki Tanaka
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
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14
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Taniguchi M, Kawabe J, Toyoda R, Namae T, Ochiai A, Saitoh E, Tanaka T. Cationic peptides from peptic hydrolysates of rice endosperm protein exhibit antimicrobial, LPS-neutralizing, and angiogenic activities. Peptides 2017; 97:70-78. [PMID: 28987278 DOI: 10.1016/j.peptides.2017.09.019] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 09/26/2017] [Accepted: 09/28/2017] [Indexed: 12/23/2022]
Abstract
In this study, we hydrolyzed rice endosperm protein (REP) with pepsin and generated 20 fractions containing multifunctional cationic peptides with varying isoelectric point (pI) values using ampholyte-free isoelectric focusing (autofocusing). Subsequently, we determined antimicrobial activities of each fraction against the pathogens Prophyromonas gingivalis, Propionibacterium acnes, Streptocossus mutans, and Candida albicans. Fractions 18, 19, and 20 had pI values greater than 12 and exhibited antimicrobial activity against P. gingivalis, P. acnes, and C. albicans, but not against S. mutans. In further experiments, we purified and identified cationic peptides from fractions 18, 19, and 20 using reversed-phase high-performance liquid chromatography and matrix-assisted laser/desorption ionization-time-of-flight mass spectroscopy. We also chemically synthesized five identified peptides (RSVSKSR, RRVIEPR, ERFQPMFRRPG, RVRQNIDNPNRADTYNPRAG, and VVRRVIEPRGLL) with pI values greater than 10.5 and evaluated antimicrobial, lipopolysaccharide (LPS)-neutralizing, and angiogenic activities. Among these synthetic peptides, only VVRRVIEPRGLL exhibited antimicrobial activity against P. gingivalis, with an IC50 value of 87μM. However, all five cationic peptides exhibited LPS-neutralizing and angiogenic activities with little or no hemolytic activity against mammalian red blood cells at functional concentrations. These present data show dual or multiple functions of the five identified cationic peptides with little or no hemolytic activity. Therefore, fractions containing cationic peptides from REP hydrolysates have the potential to be used as dietary supplements and functional ingredients in food products.
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Affiliation(s)
- Masayuki Taniguchi
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan.
| | - Junya Kawabe
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
| | - Ryu Toyoda
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
| | - Toshiki Namae
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
| | - Akihito Ochiai
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
| | - Eiichi Saitoh
- Graduate School of Technology, Niigata Institute of Technology, Niigata 945-1195, Japan
| | - Takaaki Tanaka
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
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15
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Wang Y, Fan Y, Zhou Z, Tu H, Ren Q, Wang X, Ding L, Zhou X, Zhang L. De novo synthetic short antimicrobial peptides against cariogenic bacteria. Arch Oral Biol 2017; 80:41-50. [DOI: 10.1016/j.archoralbio.2017.03.017] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 02/17/2017] [Accepted: 03/23/2017] [Indexed: 01/10/2023]
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16
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Taniguchi M, Saito K, Nomoto T, Namae T, Ochiai A, Saitoh E, Tanaka T. Identification and characterization of multifunctional cationic and amphipathic peptides from soybean proteins. Biopolymers 2017; 108. [PMID: 28459130 DOI: 10.1002/bip.23023] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2016] [Revised: 04/12/2017] [Accepted: 04/13/2017] [Indexed: 11/08/2022]
Abstract
In this study, we identified and chemically synthesized three cationic and amphipathic peptides (Glycinin-17, BCAS-16, and BCBS-11) from soybean proteins. These peptides had high isoelectric points, high positive net charges, and included multiple hydrophobic amino acids. Subsequently, we identified multiple functions of these peptides, including antimicrobial, lipopolysaccharide-neutralizing, and angiogenic activities, and examined their cytotoxic activities against mammalian red blood cells. Glycinin-17, BCAS-16, and BCBS-11 exhibited antimicrobial activity against Porphyromonas gingivalis and Candida albicans whereas Glycinin-17 did not possess antimicrobial effects on Propionibacterium acnes and Streptococcus mutans. Membrane-depolarization assays and flow cytometric analyses showed that the antimicrobial properties of Glycinin-17, BCAS-16, and BCBS-11 against P. gingivalis, P. acnes, and S. mutans were dependent on membrane-disrupting potential. In contrast, major antimicrobial activities of these peptides against C. albicans were dependent on interactions with targets other than cell membranes. Furthermore, chromogenic Limulus amebocyte lysate assays showed that 50% effective concentrations (EC50 , 0.12-0.31 μM) of these three peptides neutralize LPS with similar potency (EC50 : 0.11 μM) to that of polymyxin B. Moreover, tube-formation assays in human umbilical vein endothelial cells showed similar angiogenic activities of the three peptides as that following treatment with LL-37. Although BCAS-16 exhibited hemolytic activity, the rate of hemolysis for Glycinin-17 and BCBS-11 in the presence of 500-μM Glycinin-17 and BCBS-11 was less than 2%. These results demonstrate that cationic and amphipathic peptides from soybean proteins, particularly Glycinin-17 and BCBS-11, have potential as multifunctional ingredients for healthcare applications.
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Affiliation(s)
- Masayuki Taniguchi
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata, 950-2181, Japan
- Center for Transdisciplinary Research, Niigata University, Niigata, 950-2181, Japan
| | - Kengo Saito
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata, 950-2181, Japan
| | - Takafumi Nomoto
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata, 950-2181, Japan
| | - Toshiki Namae
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata, 950-2181, Japan
| | - Akihito Ochiai
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata, 950-2181, Japan
| | - Eiichi Saitoh
- Graduate School of Technology, Niigata Institute of Technology, Niigata, 945-1195, Japan
| | - Takaaki Tanaka
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata, 950-2181, Japan
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17
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Taniguchi M, Kameda M, Namae T, Ochiai A, Saitoh E, Tanaka T. Identification and characterization of multifunctional cationic peptides derived from peptic hydrolysates of rice bran protein. J Funct Foods 2017. [DOI: 10.1016/j.jff.2017.04.046] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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18
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Park HJ, Salem M, Semlali A, Leung KP, Rouabhia M. Antimicrobial peptide KSL-W promotes gingival fibroblast healing properties in vitro. Peptides 2017; 93:33-43. [PMID: 28499840 DOI: 10.1016/j.peptides.2017.05.003] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 05/01/2017] [Accepted: 05/06/2017] [Indexed: 12/14/2022]
Abstract
We investigated the effect of synthetic antimicrobial decapeptide KSL-W (KKVVFWVKFK) on normal human gingival fibroblast growth, migration, collagen gel contraction, and α-smooth muscle actin protein expression. Results show that in addition to promoting fibroblast adhesion by increasing F-actin production, peptide KSL-W promoted cell growth by increasing the S and G2/M cell cycle phases, and enhanced the secretion of metalloproteinase (MMP)-1 and MMP-2 by upregulating MMP inhibitors, such as tissue inhibitors of metalloproteinase (TIMP)-1 and TIMP-2 in fibroblasts. An in vitro wound healing assay confirmed that peptide KSL-W promoted fibroblast migration and contraction of a collagen gel matrix. We also demonstrated a high expression of α-smooth muscle actin by gingival fibroblasts being exposed to KSL-W. This work shows that peptide KSL-W enhances gingival fibroblast growth, migration, and metalloproteinase secretion, and the expression of α-smooth muscle actin, thus promoting wound healing.
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Affiliation(s)
- Hyun-Jin Park
- Groupe de Recherche en Écologie Buccale, Faculté de Médecine Dentaire, Université Laval, Québec, QC, Canada
| | - Mabrouka Salem
- Groupe de Recherche en Écologie Buccale, Faculté de Médecine Dentaire, Université Laval, Québec, QC, Canada
| | - Abdelhabib Semlali
- Department of Biochemistry, College of Science, King Saud University, Riyadh, Saudi Arabia
| | - Kai P Leung
- Dental and Craniofacial Trauma Research and Tissue Regeneration Directorate, US Army Institute of Surgical Research, Joint Base Fort Sam Houston, TX 78234-6315, USA
| | - Mahmoud Rouabhia
- Groupe de Recherche en Écologie Buccale, Faculté de Médecine Dentaire, Université Laval, Québec, QC, Canada.
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19
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Antibacterial Activity and Toxicity of Analogs of Scorpion Venom IsCT Peptides. Antibiotics (Basel) 2017; 6:antibiotics6030013. [PMID: 28657596 PMCID: PMC5617977 DOI: 10.3390/antibiotics6030013] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Revised: 06/19/2017] [Accepted: 06/26/2017] [Indexed: 02/08/2023] Open
Abstract
Seven analogs of the natural, α-helix peptides IsCT1 and IsCT2-found in the venom of scorpion Opithancatus Madagascariensis-have been synthesized and tested to compare their antibacterial and hemolytic activity against natural peptides. In general, results show that increasing hydrophobicity by substituting positions 5 and 9 of the sequences with alanine, valine, and leucine, enhances antibacterial activity. However, this also increases hemolytic activity. The analog with an increased net positive charge from +1 to +3 produces moderate bacterial growth inhibition but also has high hemolytic activity. On the other hand, the analog with a negative net charge (-1) has low antibacterial properties but also no cytotoxicity under the tested conditions, a similar result was found for five of the seven studied analogs.
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20
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Taniguchi M, Ochiai A, Toyoda R, Sato T, Saitoh E, Kato T, Tanaka T. Effects of arginine and leucine substitutions on anti-endotoxic activities and mechanisms of action of cationic and amphipathic antimicrobial octadecapeptide from rice α
-amylase. J Pept Sci 2017; 23:252-260. [DOI: 10.1002/psc.2983] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2016] [Revised: 01/11/2017] [Accepted: 01/29/2017] [Indexed: 12/18/2022]
Affiliation(s)
- Masayuki Taniguchi
- Department of Materials Science and Technology, Graduate School of Science and Technology; Niigata University; Niigata 950-2181 Japan
- Center for Transdisciplinary Research; Niigata University; Niigata 950-2181 Japan
| | - Akihito Ochiai
- Department of Materials Science and Technology, Graduate School of Science and Technology; Niigata University; Niigata 950-2181 Japan
| | - Ryu Toyoda
- Department of Materials Science and Technology, Graduate School of Science and Technology; Niigata University; Niigata 950-2181 Japan
| | - Teppei Sato
- Department of Materials Science and Technology, Graduate School of Science and Technology; Niigata University; Niigata 950-2181 Japan
| | - Eiichi Saitoh
- Graduate School of Technology; Niigata Institute of Technology; Niigata 945-1195 Japan
| | - Tetsuo Kato
- Department of Chemistry; Tokyo Dental College; Tokyo 101-0062 Japan
| | - Takaaki Tanaka
- Department of Materials Science and Technology, Graduate School of Science and Technology; Niigata University; Niigata 950-2181 Japan
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21
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Taniguchi M, Ochiai A, Takahashi K, Nakamichi SI, Nomoto T, Saitoh E, Kato T, Tanaka T. Antimicrobial activity against Porphyromonas gingivalis and mechanism of action of the cationic octadecapeptide AmyI-1-18 and its amino acid-substituted analogs. J Biosci Bioeng 2016; 122:652-659. [DOI: 10.1016/j.jbiosc.2016.05.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2016] [Revised: 05/27/2016] [Accepted: 05/27/2016] [Indexed: 10/21/2022]
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22
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AmyI-1–18, a cationic α-helical antimicrobial octadecapeptide derived from α-amylase in rice, inhibits the translation and folding processes in a protein synthesis system. J Biosci Bioeng 2016; 122:385-92. [DOI: 10.1016/j.jbiosc.2016.03.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Revised: 03/07/2016] [Accepted: 03/08/2016] [Indexed: 01/10/2023]
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23
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Taniguchi M, Ochiai A, Takahashi K, Nakamichi SI, Nomoto T, Saitoh E, Kato T, Tanaka T. Effect of alanine, leucine, and arginine substitution on antimicrobial activity against candida albicans and action mechanism of a cationic octadecapeptide derived from α-amylase of rice. Biopolymers 2016; 106:219-229. [DOI: 10.1002/bip.22817] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2015] [Revised: 01/19/2016] [Accepted: 01/27/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Masayuki Taniguchi
- Department of Materials Science and Technology; Graduate School of Science and Technology, Niigata University; Niigata 950-2181 Japan
- Center for Transdisciplinary Research, Niigata University; Niigata 950-2181 Japan
| | - Akihito Ochiai
- Department of Materials Science and Technology; Graduate School of Science and Technology, Niigata University; Niigata 950-2181 Japan
| | - Kiyoshi Takahashi
- Department of Materials Science and Technology; Graduate School of Science and Technology, Niigata University; Niigata 950-2181 Japan
| | - Shun-ichi Nakamichi
- Department of Materials Science and Technology; Graduate School of Science and Technology, Niigata University; Niigata 950-2181 Japan
| | - Takafumi Nomoto
- Department of Materials Science and Technology; Graduate School of Science and Technology, Niigata University; Niigata 950-2181 Japan
| | - Eiichi Saitoh
- Graduate School of Technology; Niigata Institute of Technology; Niigata 945-1195 Japan
| | - Tetsuo Kato
- Department of Chemistry; Tokyo Dental College; Tokyo 101-0062 Japan
| | - Takaaki Tanaka
- Department of Materials Science and Technology; Graduate School of Science and Technology, Niigata University; Niigata 950-2181 Japan
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24
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Taniguchi M, Ochiai A, Matsushima K, Tajima K, Kato T, Saitoh E, Tanaka T. Endotoxin-neutralizing activity and mechanism of action of a cationic α-helical antimicrobial octadecapeptide derived from α-amylase of rice. Peptides 2016; 75:101-8. [PMID: 26643956 DOI: 10.1016/j.peptides.2015.11.006] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2015] [Revised: 11/09/2015] [Accepted: 11/24/2015] [Indexed: 01/07/2023]
Abstract
We have previously reported that AmyI-1-18, an octadecapeptide derived from α-amylase (AmyI-1) of rice, is a novel cationic α-helical peptide that exhibited antimicrobial activity against human pathogens, including Porphyromonas gingivalis, Pseudomonas aeruginosa, Propionibacterium acnes, Streptococcus mutans, and Candida albicans. In this study, to further investigate the potential functions of AmyI-1-18, we examined its inhibitory ability against the endotoxic activities of lipopolysaccharides (LPSs, smooth and Rc types) and lipid A from Escherichia coli. AmyI-1-18 inhibited the production of endotoxin-induced nitric oxide (NO), an inflammatory mediator, in mouse macrophages (RAW264) in a concentration-dependent manner. The results of a chromogenic Limulus amebocyte lysate assay illustrated that the ability [50% effective concentration (EC50): 0.17 μM] of AmyI-1-18 to neutralize lipid A was similar to its ability (EC50: 0.26 μM) to neutralize LPS, suggesting that AmyI-1-18 specifically binds to the lipid A moiety of LPS. Surface plasmon resonance analysis of the interaction between AmyI-1-18 and LPS or lipid A also suggested that AmyI-1-18 directly binds to the lipid A moiety of LPS because the dissociation constant (KD) of AmyI-1-18 with lipid A is 5.6×10(-10) M, which is similar to that (4.3×10(-10) M) of AmyI-1-18 with LPS. In addition, AmyI-1-18 could block the binding of LPS-binding protein to LPS, although its ability was less than that of polymyxin B. These results suggest that AmyI-1-18 expressing antimicrobial and endotoxin-neutralizing activities is useful as a safe and potent host defense peptide against pathogenic Gram-negative bacteria in many fields of healthcare.
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Affiliation(s)
- Masayuki Taniguchi
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan; Center for Transdisciplinary Research, Niigata University, Niigata 950-2181, Japan.
| | - Akihito Ochiai
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
| | - Kenta Matsushima
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
| | - Koji Tajima
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
| | - Tetsuo Kato
- Department of Chemistry, Tokyo Dental College, Tokyo 101-0062, Japan
| | - Eiichi Saitoh
- Graduate School of Technology, Niigata Institute of Technology, Niigata 945-1195, Japan
| | - Takaaki Tanaka
- Department of Materials Science and Technology, Graduate School of Science and Technology, Niigata University, Niigata 950-2181, Japan
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