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Mangoni ML, Loffredo MR, Casciaro B, Ferrera L, Cappiello F. An Overview of Frog Skin-Derived Esc Peptides: Promising Multifunctional Weapons against Pseudomonas aeruginosa-Induced Pulmonary and Ocular Surface Infections. Int J Mol Sci 2024; 25:4400. [PMID: 38673985 PMCID: PMC11049899 DOI: 10.3390/ijms25084400] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2024] [Revised: 04/08/2024] [Accepted: 04/13/2024] [Indexed: 04/28/2024] Open
Abstract
Antimicrobial resistance is a silent pandemic harming human health, and Pseudomonas aeruginosa is the most common bacterium responsible for chronic pulmonary and eye infections. Antimicrobial peptides (AMPs) represent promising alternatives to conventional antibiotics. In this review, the in vitro/in vivo activities of the frog skin-derived AMP Esc(1-21) are shown. Esc(1-21) rapidly kills both the planktonic and sessile forms of P. aeruginosa and stimulates migration of epithelial cells, likely favoring repair of damaged tissue. However, to undertake preclinical studies, some drawbacks of AMPs (cytotoxicity, poor biostability, and limited delivery to the target site) must be overcome. For this purpose, the stereochemistry of two amino acids of Esc(1-21) was changed to obtain the diastereomer Esc(1-21)-1c, which is more stable, less cytotoxic, and more efficient in treating P. aeruginosa-induced lung and cornea infections in mouse models. Incorporation of these peptides (Esc peptides) into nanoparticles or immobilization to a medical device (contact lens) was revealed to be an effective strategy to ameliorate and/or to prolong the peptides' antimicrobial efficacy. Overall, these data make Esc peptides encouraging candidates for novel multifunctional drugs to treat lung pathology especially in patients with cystic fibrosis and eye dysfunctions, characterized by both tissue injury and bacterial infection.
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Affiliation(s)
- Maria Luisa Mangoni
- Laboratory Affiliated to Pasteur Italia-Fondazione Cenci Bolognetti, Department of Biochemical Sciences, Sapienza University of Rome, 00185 Rome, Italy
| | - Maria Rosa Loffredo
- Laboratory Affiliated to Pasteur Italia-Fondazione Cenci Bolognetti, Department of Biochemical Sciences, Sapienza University of Rome, 00185 Rome, Italy
| | - Bruno Casciaro
- Laboratory Affiliated to Pasteur Italia-Fondazione Cenci Bolognetti, Department of Biochemical Sciences, Sapienza University of Rome, 00185 Rome, Italy
| | - Loretta Ferrera
- UOC Genetica Medica, IRCCS Istituto Giannina Gaslini, 16147 Genoa, Italy
| | - Floriana Cappiello
- Laboratory Affiliated to Pasteur Italia-Fondazione Cenci Bolognetti, Department of Biochemical Sciences, Sapienza University of Rome, 00185 Rome, Italy
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2
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Spinelli R, Rietmann Á, Sanchis I, Goicoechea H, Siano Á. Toxicity Evaluation of Anti-cholinesterasic Amphibian Extracts by MTT and an Optimized Artemia salina Test. Chem Biodivers 2024; 21:e202301367. [PMID: 38151826 DOI: 10.1002/cbdv.202301367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2023] [Revised: 12/19/2023] [Accepted: 12/21/2023] [Indexed: 12/29/2023]
Abstract
The amphibian skin is an important source of bioactive compounds. Recently, our workgroup reported the bioactivity of new extracts from the Hylidae, Microhylidae and Leptodactylidae families against several pathways involved in Alzheimer's disease. However, since cytotoxicity can be a limiting factor for their applicability, we evaluated the toxicity of nine amphibian skin extracts with reported anticholinesterase activity, using the traditional MTT assay and an optimized Artemia salina test. The proposed improvement, guided by experimental design, aims to reduce the amount of biological sample needed. Overall, we proved that the active extracts were non-toxic at effective concentration against cholinesterases (AChE/BChE), positioning the amphibian skin as a promising and preliminary safe source of bioactive compounds in the anti-Alzheimer's treatment. Interestingly, we demonstrated that both toxicity assays can discriminate between toxic and non-toxic samples. We propose the A. salina bioassay as a reliable and cost-effective alternative for early toxicity screening.
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Affiliation(s)
- Roque Spinelli
- Laboratorio de Péptidos Bioactivos (LPB), Departamento de Química Orgánica, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral (UNL), Santa Fe
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| | - Álvaro Rietmann
- Laboratorio de Péptidos Bioactivos (LPB), Departamento de Química Orgánica, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral (UNL), Santa Fe
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| | - Iván Sanchis
- Laboratorio de Péptidos Bioactivos (LPB), Departamento de Química Orgánica, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral (UNL), Santa Fe
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| | - Héctor Goicoechea
- Laboratorio de Desarrollo Analítico y Quimiometría (LADAQ), Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral (UNL), Santa Fe, Argentina
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
| | - Álvaro Siano
- Laboratorio de Péptidos Bioactivos (LPB), Departamento de Química Orgánica, Facultad de Bioquímica y Ciencias Biológicas, Universidad Nacional del Litoral (UNL), Santa Fe
- Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Argentina
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3
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Conlon JM, Guilhaudis L, Attoub S, Coquet L, Leprince J, Jouenne T, Mechkarska M. Purification, Conformational Analysis and Cytotoxic Activities of Host-Defense Peptides from the Giant Gladiator Treefrog Boana boans (Hylidae: Hylinae). Antibiotics (Basel) 2023; 12:1102. [PMID: 37508198 PMCID: PMC10376367 DOI: 10.3390/antibiotics12071102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2023] [Revised: 06/16/2023] [Accepted: 06/22/2023] [Indexed: 07/30/2023] Open
Abstract
Frogs from the extensive amphibian family Hylidae are a rich source of peptides with therapeutic potential. Peptidomic analysis of norepinephrine-stimulated skin secretions from the Giant Gladiator Treefrog Boana boans (Hylidae: Hylinae) collected in Trinidad led to the isolation and structural characterization of five host-defense peptides with limited structural similarity to figainin 2 and picturin peptides from other frog species belonging to the genus Boana. In addition, the skin secretions contained high concentrations of tryptophyllin-BN (WRPFPFL) in both C-terminally α-amidated and non-amidated forms. Figainin 2BN (FLGVALKLGKVLG KALLPLASSLLHSQ) and picturin 1BN (GIFKDTLKKVVAAVLTTVADNIHPK) adopt α-helical conformations in trifluroethanol-water mixtures and in the presence of cell membrane models (sodium dodecylsulfate and dodecylphosphocholine micelles). The CD data also indicate contributions from turn structures. Both peptides and picturin 2BN (GLMDMLKKVGKVALT VAKSALLP) inhibited the growth of clinically relevant Gram-negative and Gram-positive bacteria with MIC values in the range 7.8-62.5 µM. Figainin 2BN was potently cytotoxic to A549, MDA-MB-231 and HT-29 human tumor-derived cells (LC50 = 7-14 µM) but displayed comparable potency against non-neoplastic HUVEC cells (LC50 = 15 µM) indicative of lack of selectivity for cancer cells.
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Affiliation(s)
- J Michael Conlon
- Diabetes Research Centre, School of Biomedical Sciences, University of Ulster, Coleraine BT52 1SA, UK
| | - Laure Guilhaudis
- Laboratoire COBRA (UMR 6014 & FR 3038), UNIROUEN, INSA de Rouen, CNRS, Université Rouen Normandie, 76000 Rouen, France
| | - Samir Attoub
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain 17666, United Arab Emirates
| | - Laurent Coquet
- CNRS UAR2026 HeRacLeS-PISSARO, CNRS UMR 6270 PBS, Université Rouen Normandie, 76821 Mont-Saint-Aignan, France
| | - Jérôme Leprince
- Inserm U1239, PRIMACEN, Institute for Research and Innovation in Biomedicine (IRIB), Université Rouen Normandie, 76000 Rouen, France
| | - Thierry Jouenne
- CNRS UAR2026 HeRacLeS-PISSARO, CNRS UMR 6270 PBS, Université Rouen Normandie, 76821 Mont-Saint-Aignan, France
| | - Milena Mechkarska
- Department of Life Sciences, Faculty of Science and Technology, St. Augustine Campus, The University of The West Indies, St. Augustine, Trinidad and Tobago
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Conlon JM, Hunter L, Attoub S, Casciaro B, Mechkarska M, Abdel-Wahab YHA. Antimicrobial, cytotoxic, and insulin-releasing activities of the amphibian host-defense peptide ocellatin-3N and its L-lysine-substituted analogs. J Pept Sci 2023; 29:e3463. [PMID: 36426386 DOI: 10.1002/psc.3463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2022] [Revised: 11/12/2022] [Accepted: 11/22/2022] [Indexed: 11/26/2022]
Abstract
The host-defense peptide ocellatin-3N (GIFDVLKNLAKGVITSLAS.NH2 ), first isolated from the Caribbean frog Leptodactylus nesiotus, inhibited growth of clinically relevant Gram-positive and Gram-negative bacteria as well as a strain of the major emerging yeast pathogen Candida parapsilosis. Increasing cationicity while maintaining amphipathicity by the substitution Asp4 →Lys increased potency against the microorganisms by between 4- and 16-fold (MIC ≤3 μM) compared with the naturally occurring peptide. The substitution Ala18 →Lys and the double substitution Asp4 →Lys and Ala18 →Lys had less effects on potency. The [D4K] analog also showed 2.5- to 4-fold greater cytotoxic potency against non-small-cell lung adenocarcinoma A549 cells, breast adenocarcinoma MDA-MB-231 cells, and colorectal adenocarcinoma HT-29 cells (LC50 values in the range of 12-20 μM) compared with ocellatin-3N but was less hemolytic to mouse erythrocytes. However, the peptide showed no selectivity for tumor-derived cells [LC50 = 20 μM for human umbilical vein endothelial cells (HUVECs)]. Ocellatin-3N and [D4K]ocellatin-3N stimulated the release of insulin from BRIN-BD11 clonal β-cells at concentrations ≥1 nM, and [A18K]ocellatin-3N, at concentrations ≥0.1 nM. No peptide stimulated the release of lactate dehydrogenase at concentrations up to 3 μM, indicating that plasma membrane integrity had been preserved. The three peptides produced an increase in intracellular [Ca2+ ] in BRIN-BD11 cells when incubated at a concentration of 1 μM. In view of its high insulinotropic potency and relatively low hemolytic activity, the [A18K] ocellatin analog may represent a template for the design of agents with therapeutic potential for the treatment of patients with type 2 diabetes.
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Affiliation(s)
- J Michael Conlon
- Diabetes Research Group, School of Biomedical Sciences, Ulster University, Coleraine, UK
| | - Lauren Hunter
- Diabetes Research Group, School of Biomedical Sciences, Ulster University, Coleraine, UK
| | - Samir Attoub
- Department of Pharmacology and Therapeutics, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Bruno Casciaro
- Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Department of Biochemical Sciences, Sapienza University of Rome, Rome, Italy
| | - Milena Mechkarska
- Department of Life Sciences, The University of the West Indies, St Augustine, Trinidad and Tobago
| | - Yasser H A Abdel-Wahab
- Diabetes Research Group, School of Biomedical Sciences, Ulster University, Coleraine, UK
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Ogawa D, Suzuki M, Inamura Y, Saito K, Hasunuma I, Kobayashi T, Kikuyama S, Iwamuro S. Antimicrobial Property and Mode of Action of the Skin Peptides of the Sado Wrinkled Frog, Glandirana susurra, against Animal and Plant Pathogens. Antibiotics (Basel) 2020; 9:antibiotics9080457. [PMID: 32751229 PMCID: PMC7460468 DOI: 10.3390/antibiotics9080457] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 07/24/2020] [Accepted: 07/27/2020] [Indexed: 11/16/2022] Open
Abstract
The Sado wrinkled frog Glandirana susurra has recently been classified as a new frog species endemic to Sado Island, Japan. In this study, we cloned 12 cDNAs encoding the biosynthetic precursors for brevinin-2SSa–2SSd, esculentin-2SSa, ranatuerin-2SSa, brevinin-1SSa–1SSd, granuliberin-SSa, and bradykinin-SSa from the skin of G. susurra. Among these antimicrobial peptides, we focused on brevinin-2SSb, ranatuerin-2SSa, and granuliberin-SSa, using their synthetic replicates to examine their activities against different reference strains of pathogenic microorganisms that infect animals and plants. In broth microdilution assays, brevinin-2SSb displayed antimicrobial activities against animal pathogens Escherichia coli, Salmonella enterica, Pseudomonas aeruginosa, and Candida albicans and plant pathogens Xanthomonas oryzae pv. oryzae, Clavibacter michiganensis subsp. michiganensis, and Pyricularia oryzae. Ranatuerin-2SSa and granuliberin-SSa were active against C. albicans and C. michiganensis subsp. michiganensis, and granuliberin-SSa also was active against the other plant pathogenic microbes. Scanning electron microscopic observations demonstrated that brevinin-2SSb, ranatuerin-2SSa, and granuliberin-SSa induced morphological abnormalities on the cell surface in a wide range of the reference pathogens. To assess the bacterial-endotoxin-binding ability of the peptides, we developed an enzyme-linked endotoxin-binding assay system and demonstrated that brevinin-2SSb and ranatuerin-2SSa both exhibited high affinity to lipopolysaccharide and moderate affinity to lipoteichoic acid.
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Affiliation(s)
- Daisuke Ogawa
- Department of Biology, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan; (D.O.); (M.S.); (Y.I.); (K.S.); (I.H.)
| | - Manami Suzuki
- Department of Biology, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan; (D.O.); (M.S.); (Y.I.); (K.S.); (I.H.)
| | - Yuriko Inamura
- Department of Biology, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan; (D.O.); (M.S.); (Y.I.); (K.S.); (I.H.)
| | - Kaito Saito
- Department of Biology, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan; (D.O.); (M.S.); (Y.I.); (K.S.); (I.H.)
| | - Itaru Hasunuma
- Department of Biology, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan; (D.O.); (M.S.); (Y.I.); (K.S.); (I.H.)
| | - Tetsuya Kobayashi
- Department of Regulatory Biology, Faculty of Sciences, Saitama University, 255 Shimo-okubo, Sakura-ku, Saitama 338-8570, Japan;
| | - Sakae Kikuyama
- Department of Biology, Faculty of Education and Integrated Arts and Sciences, Center for Advanced Biomedical Sciences, Waseda University, 2-2 Wakamatsu-cho, Shinjuku-ku, Tokyo 162-8480, Japan;
| | - Shawichi Iwamuro
- Department of Biology, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan; (D.O.); (M.S.); (Y.I.); (K.S.); (I.H.)
- Correspondence: ; Tel.: +81-47-472-5206
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Stürmer R, Reising J, Hoffmann W. Trefoil Factor Family (TFF) Modules Are Characteristic Constituents of Separate Mucin Complexes in the Xenopus laevis Integumentary Mucus: In Vitro Binding Studies with FIM-A.1. Int J Mol Sci 2020; 21:E2400. [PMID: 32244312 DOI: 10.3390/ijms21072400] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 03/20/2020] [Accepted: 03/26/2020] [Indexed: 02/06/2023] Open
Abstract
The skin of the frog Xenopus laeevis is protected from microbial infections by a mucus barrier that contains frog integumentary mucins (FIM)-A.1, FIM-B.1, and FIM-C.1. These gel-forming mucins are synthesized in mucous glands consisting of ordinary mucous cells and one or more cone cells at the gland base. FIM-A.1 and FIM-C.1 are unique because their cysteine-rich domains belong to the trefoil factor family (TFF). Furthermore, FIM-A.1 is unusually short (about 400 amino acid residues). In contrast, FIM-B.1 contains cysteine-rich von Willebrand D (vWD) domains. Here, we separate skin extracts by the use of size exclusion chromatography and analyze the distribution of FIM-A.1 and FIM-C.1. Two mucin complexes were detected, i.e., a high-molecular-mass Complex I, which contains FIM-C.1 and little FIM-A.1, whereas Complex II is of lower molecular mass and contains the bulk of FIM-A.1. We purified FIM-A.1 by a combination of size-exclusion chromatography (SEC) and anion-exchange chromatography and performed first in vitro binding studies with radioactively labeled FIM-A.1. Binding of 125I-labeled FIM-A.1 to the high-molecular-mass Complex I was observed. We hypothesize that the presence of FIM-A.1 in Complex I is likely due to lectin interactions, e.g., with FIM-C.1, creating a complex mucus network.
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Christian K, Weitzman C, Rose A, Kaestli M, Gibb K. Ecological patterns in the skin microbiota of frogs from tropical Australia. Ecol Evol 2018; 8:10510-10519. [PMID: 30464823 PMCID: PMC6238143 DOI: 10.1002/ece3.4518] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 08/14/2018] [Accepted: 08/17/2018] [Indexed: 12/20/2022] Open
Abstract
The microbiota of frog skin can play an important role in protecting against diseases and parasites. The frog skin microbial community represents a complex mix of microbes that are promoted by the chemical environment of the frog skin and influenced by the animal's immediate past environment. The microbial communities of six species of frogs sampled from the campus of Charles Darwin University (CDU) were more similar within species than between species. The microbiota of the introduced cane toad (Rhinella marina) was most dissimilar among the species. Pairwise comparisons showed that the microbial communities of each species were different, except for the terrestrial Litoria nasuta and the arboreal L. rothii. The microbial communities of the six species were not related to ecological habit (arboreal or terrestrial), and neither was the alpha diversity of the microbes. The core microbes (defined as being on ≥90% of individuals of a species or group) were significantly different among all species, although 89 microbial operational taxonomic units (OTUs) were core microbes for all six species at CDU. Two species, Rhinella marina and Litoria rothii, were sampled at additional sites approximately 10 and 30 km from CDU. The microbial communities and the core OTU composition were different among the sites, but there were nevertheless 194 (R. marina) and 181 (L. rothii) core OTUs present at all three sites. Thus, the core microbiota varied with respect to geographic range and sample size.
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Affiliation(s)
- Keith Christian
- Research Institute for the Environment and LivelihoodsCharles Darwin UniversityDarwinNorthern TerritoryAustralia
| | | | - Alea Rose
- Research Institute for the Environment and LivelihoodsCharles Darwin UniversityDarwinNorthern TerritoryAustralia
| | - Mirjam Kaestli
- Research Institute for the Environment and LivelihoodsCharles Darwin UniversityDarwinNorthern TerritoryAustralia
| | - Karen Gibb
- Research Institute for the Environment and LivelihoodsCharles Darwin UniversityDarwinNorthern TerritoryAustralia
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Conlon JM, Musale V, Attoub S, Mangoni ML, Leprince J, Coquet L, Jouenne T, Abdel-Wahab YHA, Flatt PR, Rinaldi AC. Cytotoxic peptides with insulin-releasing activities from skin secretions of the Italian stream frog Rana italica (Ranidae). J Pept Sci 2017; 23:769-776. [PMID: 28699258 DOI: 10.1002/psc.3025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 06/14/2017] [Indexed: 12/14/2022]
Abstract
Peptidomic analysis of norepinephrine-stimulated skin secretions from Italian stream frog Rana italica led to the purification and characterization of two host-defense peptides differing by a single amino acid residue belonging to the brevinin-1 family (brevinin-1ITa and -1ITb), a peptide belonging to the temporin family (temporin-ITa) and a component identified as prokineticin Bv8. The secretions contained relatively high concentrations of the methionine-sulphoxide forms of brevinin-1ITa and -1ITb suggesting that these peptides may have a role as antioxidants in the skin of this montane frog. Brevinin-1ITa (IVPFLLGMVPKLVCLITKKC) displayed potent cytotoxicity against non-small cell lung adenocarcinoma A549 cells (LC50 = 18 μM), breast adenocarcinoma MDA-MB-231 cells (LC50 = 8 μM) and colorectal adenocarcinoma HT-29 cells (LC50 = 18 μM), but the peptide was also strongly hemolytic against mouse erythrocytes (LC50 = 7 μM). Temporin-ITa (VFLGAIAQALTSLLGKL.NH2 ) was between three and fivefold less potent against these cells. Brevinin-1ITa inhibited growth of both Gram-positive Staphylococcus epidermidis and Gram-negative Escherichia coli as well as a strain of the opportunist yeast pathogen Candida parapsilosis, whereas temporin-ITa was active only against S. epidermidis and C. parapsilosis. Both peptides stimulated the release of insulin from BRIN-BD11 clonal β-cells at concentrations ≥1 nM, but brevinin-1ITa was cytotoxic to the cells at concentrations ≥3 μM. Copyright © 2017 European Peptide Society and John Wiley & Sons, Ltd.
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Affiliation(s)
- J Michael Conlon
- SAAD Centre for Pharmacy and Diabetes, School of Biomedical Sciences, University of Ulster, Coleraine, BT52 1SA, UK
| | - Vishal Musale
- SAAD Centre for Pharmacy and Diabetes, School of Biomedical Sciences, University of Ulster, Coleraine, BT52 1SA, UK
| | - Samir Attoub
- Department of Pharmacology, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Maria Luisa Mangoni
- Laboratory Affiliated to Istituto Pasteur Italia-Fondazione Cenci Bolognetti, Department of Biochemical Sciences, Sapienza University of Rome, Rome, Italy
| | - Jérôme Leprince
- Inserm U982, PRIMACEN, Institute for Research and Innovation in Biomedicine (IRIB), Normandy University, 76000, Mont-Saint-Aignan, France
| | - Laurent Coquet
- CNRS UMR 6270, PISSARO, Institute for Research and Innovation in Biomedicine (IRIB), Normandy University, 76000, Mont-Saint-Aignan, France
| | - Thierry Jouenne
- CNRS UMR 6270, PISSARO, Institute for Research and Innovation in Biomedicine (IRIB), Normandy University, 76000, Mont-Saint-Aignan, France
| | - Yasser H A Abdel-Wahab
- SAAD Centre for Pharmacy and Diabetes, School of Biomedical Sciences, University of Ulster, Coleraine, BT52 1SA, UK
| | - Peter R Flatt
- SAAD Centre for Pharmacy and Diabetes, School of Biomedical Sciences, University of Ulster, Coleraine, BT52 1SA, UK
| | - Andrea C Rinaldi
- Department of Biomedical Sciences, University of Cagliari, Monserrato, (CA), Italy
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Dong Z, Luo W, Zhong H, Wang M, Song Y, Deng S, Zhang Y. Molecular cloning and characterization of antimicrobial peptides from skin of Hylarana guentheri. Acta Biochim Biophys Sin (Shanghai) 2017; 49:450-457. [PMID: 28338958 DOI: 10.1093/abbs/gmx023] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2017] [Indexed: 11/14/2022] Open
Abstract
The cDNAs encoding antimicrobial peptides (AMPs) in the skin of Hylarana guentheri were identified, namely temporin (five peptides, termed temporin-GHa-GHd and temporin-GUa), brevinin-1 (one peptide, brevinin-1GUb), and brevinin-2 (eight peptides, brevinin-2GHd-2GHj, and brevinin-2GHb). Eleven of the 14 peptides have novel primary structures. Synthesized temporin GHa-GHd have broad-spectrum antimicrobial activities against Gram-positive bacteria (Staphylococcus aureus and Bacillus subtilis), Gram-negative bacteria (Escherichia coli, Vibrio alginolyticus, and Pseudomonas aeruginosa), as well as fungus (Candida albicans). Among these tested strains, S. aureus was the most sensitive to temporin-GHa-GHd with minimum inhibitory concentration (MIC) values between 6.8 and 12.9 μM. They also exhibited antimicrobial activities against Methicillin-resistant S. aureus with the MIC ranging from 12.7 to 51.7 μM. Interestingly, secondary structure prediction shows that there is no α-helix in temporin-GHb, which illustrates that α-helix is not required for the antimicrobial activity of temporin-GHb. NaCl (at final concentrations of 0.15-2 M) decreased the antimicrobial activity of temporin-GHa-GHd slightly, while human serum and S. aureus V8 proteinase had no effect on the antimicrobial activity. Scanning electron microscopy images of E. coli and S. aureus showed that the surface of microbial cells was considerably rough and shrived after 1 h of treatment with temporin-GHa-GHd at 37°C. The stabilities of temporin-GHa-GHd in human serum or in S. aureus V8 proteinase make them to be promising candidates of novel antimicrobial agents or models for the development of novel AMPs.
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Affiliation(s)
- Zhu Dong
- Key Laboratory of Tropical Biological Resources, Ministry of Education, College of Marine Science, Hainan University, Haikou 570228, China
| | - Wenjie Luo
- Key Laboratory of Tropical Biological Resources, Ministry of Education, College of Marine Science, Hainan University, Haikou 570228, China
| | - Hengren Zhong
- Key Laboratory of Tropical Biological Resources, Ministry of Education, College of Marine Science, Hainan University, Haikou 570228, China
| | - Manchuriga Wang
- Hainan Key Laboratory of Tropical Animal Reproduction & Breeding and Epidemic Disease Research, Hainan University, Haikou 570228, China
| | - Yanting Song
- Key Laboratory of Tropical Biological Resources, Ministry of Education, College of Marine Science, Hainan University, Haikou 570228, China
| | - Shiming Deng
- Key Laboratory of Tropical Biological Resources, Ministry of Education, College of Marine Science, Hainan University, Haikou 570228, China
| | - Yingxia Zhang
- Key Laboratory of Tropical Biological Resources, Ministry of Education, College of Marine Science, Hainan University, Haikou 570228, China
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Abstract
Repair of tissue wounds is a fundamental process to re-establish tissue integrity and regular function. Importantly, infection is a major factor that hinders wound healing. Multicellular organisms have evolved an arsenal of host-defense molecules, including antimicrobial peptides (AMPs), aimed at controlling microbial proliferation and at modulating the host's immune response to a variety of biological or physical insults. In this brief review, we provide the evidence for a role of AMPs as endogenous mediators of wound healing and their promising therapeutic potential for the treatment of non-life-threatening skin and other epithelial injuries.
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Affiliation(s)
- Maria Luisa Mangoni
- Istituto Pasteur-Fondazione Cenci Bolognetti, Department of Biochemical Sciences “A. Rossi Fanelli”, Sapienza University of Rome, Rome, IT
| | - Alison M. McDermott
- The Ocular Surface Institute, College of Optometry, University of Houston, Houston, TX, USA
| | - Michael Zasloff
- MedStar Georgetown Transplant Institute, Georgetown University Hospital, Washington DC, USA
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