1
|
Golda A, Kosikowska-Adamus P, Wadowska M, Dobosz E, Potempa J, Koziel J. Antiviral activity of temporin-1CEb analogues against gingival infection with herpes simplex virus type 1. FRONTIERS IN ORAL HEALTH 2024; 5:1430077. [PMID: 38953010 PMCID: PMC11215077 DOI: 10.3389/froh.2024.1430077] [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: 05/09/2024] [Accepted: 05/30/2024] [Indexed: 07/03/2024] Open
Abstract
Introduction Oral herpes infections caused by herpes simplex virus type 1 (HSV-1) are one of the most common in the human population. Recently, they have been classified as an increasing problem in immunocompromised patients and those suffering from chronic inflammation of the oral mucosa and gums. Treatment mainly involves nucleoside analogues, such as acyclovir and its derivatives, which reduce virus replication and shedding. As drug-resistant strains of herpes emerge rapidly, there is a need for the development of novel anti-herpes agents. The aim of the study was to design an antiviral peptide, based on natural compounds, non-toxic to the host, and efficient against drug-resistant HSV-1. Here, we designed a lysine-rich derivative of amphibian temporin-1CEb conjugated to peptides penetrating the host cell membrane and examined their activity against HSV-1 infection of oral mucosa. Methods We assessed the antiviral efficiency of the tested compound in simple 2D cell models (VeroE6 and TIGKs cells) and a 3D organotypic model of human gingiva (OTG) using titration assay, qPCR, and confocal imaging. To identify the molecular mechanism of antiviral activity, we applied the Azure A metachromatic test, and attachment assays techniques. Toxicity of the conjugates was examined using XTT and LDH assays. Results Our results showed that temporin-1CEb analogues significantly reduce viral replication in oral mucosa. The mechanism of peptide analogues is based on the interaction with heparan sulfate, leading to the reduce attachment of HSV-1 to the cell membrane. Moreover, temporin-1CEb conjugates effectively penetrate the gingival tissue being effective against acyclovir-resistant strains. Collectively, we showed that temporin-1CEb can be regarded as a novel, naturally derived antiviral compound for HSV-1 treatment.
Collapse
Affiliation(s)
- Anna Golda
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | | | - Marta Wadowska
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Ewelina Dobosz
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| | - Jan Potempa
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
- Department of Oral Immunology and Infectious Diseases, University of Louisville School of Dentistry, University of Louisville, Louisville, KY, United States
| | - Joanna Koziel
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Krakow, Poland
| |
Collapse
|
2
|
Kosikowska-Adamus P, Golda A, Ryl J, Pilarczyk-Zurek M, Bereta G, Ossowski T, Lesner A, Koziel J, Prahl A, Niedziałkowski P. Electrochemical detection of bacterial endotoxin lipopolysaccharide (LPS) on gold electrode modified with DAL-PEG-DK5-PEG-OH - Antimicrobial peptide conjugate. Talanta 2024; 273:125881. [PMID: 38492283 DOI: 10.1016/j.talanta.2024.125881] [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: 04/19/2023] [Revised: 02/28/2024] [Accepted: 03/04/2024] [Indexed: 03/18/2024]
Abstract
This work describes fabrication of gold electrodes modified with peptide conjugate DAL-PEG-DK5-PEG-OH that enables ultra-sensitive detection of lipopolysaccharide (LPS) isolated from the reference strain of Escherichia coli O26:B6. The initial step of the established procedure implies immobilization of the fully protected DAL-PEG-DK5-PEG-OH peptide on the surface of the gold electrode previously modified by cysteamine. Then side chain- and Fmoc-deprotection was performed in situ on the electrode surface, followed by its incubation in 1 % of BSA solution to block non-specific bindings sites before LPS detection. The efficiency of the modification was confirmed by X-ray Photoelectron Spectroscopy (XPS) measurements. Additionally, the cyclic voltammetry (CV) and electrochemical impendance spectroscopy (EIS) were employed to monitor the effectiveness of each step of the modification. The obtained results confirmed that the presence of the surface-attached covalently bound peptide DAL-PEG-DK5-PEG-OH enables LPS detection by means of CV technique within the range from 5 × 10-13 to 5 × 10-4 g/mL in PBS solution. The established limit of detection (LOD) for EIS measurements was 4.93 × 10-21 g/mL with wide linear detection range from 5 × 10-21 to 5 × 10-14 g/mL in PBS solution. Furthermore, we confirmed the ability of the electrode to detect LPS in a complex biological samples, like mouse urine and human serum. The effectiveness of the electrodes in identifying LPS in both urine and serum matrices was confirmed for samples containing LPS at both 2.5 × 10-15 g/mL and 2.5 × 10-9 g/mL.
Collapse
Affiliation(s)
- Paulina Kosikowska-Adamus
- Department of Organic Chemistry, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Anna Golda
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland
| | - Jacek Ryl
- Institute of Nanotechnology and Materials Engineering, Gdańsk University of Technology, Narutowicza 11/12, 80-233 Gdańsk, Poland
| | - Magdalena Pilarczyk-Zurek
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland
| | - Grzegorz Bereta
- Malopolska Centre of Biotechnology, Jagiellonian University, Gronostajowa 7A, 30-387 Krakow, Poland
| | - Tadeusz Ossowski
- Department of Analytical Chemistry, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Adam Lesner
- Department of Environmental Technology, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Joanna Koziel
- Department of Microbiology, Faculty of Biochemistry, Biophysics and Biotechnology, Jagiellonian University, Gronostajowa 7, 30-387 Krakow, Poland
| | - Adam Prahl
- Department of Organic Chemistry, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland
| | - Paweł Niedziałkowski
- Department of Analytical Chemistry, Faculty of Chemistry, University of Gdańsk, Wita Stwosza 63, 80-308 Gdańsk, Poland.
| |
Collapse
|
3
|
Chen X, Yang J, Qu C, Zhang Q, Sun S, Liu L. Anti- Staphylococcus aureus effects of natural antimicrobial peptides and the underlying mechanisms. Future Microbiol 2024; 19:355-372. [PMID: 38440873 DOI: 10.2217/fmb-2023-0168] [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: 07/28/2023] [Accepted: 10/13/2023] [Indexed: 03/06/2024] Open
Abstract
Staphylococcus aureus can cause localized infections such as abscesses and pneumonia, as well as systemic infections such as bacteremia and sepsis. Especially, methicillin-resistant S. aureus often presents multidrug resistance, which becomes a major clinical challenge. One of the most common reasons for methicillin-resistant S. aureus antibiotic resistance is the presence of biofilms. Natural antimicrobial peptides derived from different species have shown effectiveness in combating S. aureus biofilms. In this review, we summarize the inhibitory activity of antimicrobial peptides against S. aureus planktonic cells and biofilms. We also summarize the possible inhibitory mechanisms, involving cell adhesion inhibition, membrane fracture, biofilm disruption and DNA disruption. We believe this can provide the basis for further research against S. aureus biofilm-associated infections.
Collapse
Affiliation(s)
- Xueqi Chen
- Department of Pharmacy, China-Japan Friendship Hospital, Beijing, 100029, People's Republic of China
| | - Jiuli Yang
- Department of Clinical Pharmacy, Shandong Provincial Qianfoshan Hospital, Shandong University, Shandong Engineering & Technology Research Center for Pediatric Drug Development, Shandong Medicine & Health Key Laboratory of Clinical Pharmacy, Jinan, 250014, People's Republic of China
| | - Chang Qu
- Department of Pharmacy, Beijing Daxing District Hospital of Integrated Chinese & Western Medicine. Beijing, 102600, People's Republic of China
| | - Qian Zhang
- Department of Pharmacy, China-Japan Friendship Hospital, Beijing, 100029, People's Republic of China
| | - Shujuan Sun
- Department of Pharmacy, Shandong Second Provincial General Hospital. Jinan, 250022, People's Republic of China
| | - Lihong Liu
- Department of Pharmacy, China-Japan Friendship Hospital, Beijing, 100029, People's Republic of China
| |
Collapse
|
4
|
Ye Z, Pan J, Yin Z, Wang S, Li Y, Cai X, Zheng H, Cao Z. Dendritic cells infected with recombinant adenoviral vector encoding mouse fibroblast activation protein-α and human livin α exert an antitumor effect against Lewis lung carcinoma in mice. Immun Inflamm Dis 2023; 11:e1011. [PMID: 37773704 PMCID: PMC10523997 DOI: 10.1002/iid3.1011] [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: 04/07/2023] [Revised: 08/23/2023] [Accepted: 08/30/2023] [Indexed: 10/01/2023] Open
Abstract
BACKGROUND Fibroblast activation protein-α (FAP) and livin α are considered as cancer-associated fibroblasts (CAFs) and tumor-specific targets, respectively, for immunogenic tumor vaccines. This study is designed to decipher the antitumor effect of double-gene modified dendritic cells (DCs) on Lewis lung carcinoma (LLC). METHODS By encoding mouse FAP cDNA and human livin α (i.e., hlivin α) cDNA into recombinant adenoviral vector (rAd), rAd-FAP, rAd-hlivin α, and rAd-FAP/hlivin α were constructed, which were then transduced into mouse DCs. LLC-bearinig mice were immunized with the infected DCs (5 × 105 cells/mouse), followed by calculation of tumor volume and survival rate. The identification of CAFs from mouse LLC as well as the determination on expressions of FAP and livin α, was accomplished by western blot. Cytotoxic T lymphocyte assay was harnessed to assess the effect of the infected DCs on inducing splenic lymphocytes to lyse CAFs. RESULTS DCs were successfully transduced with rAd-FAP/hlivin α in vitro. FAP was highly expressed in CAFs. CAFs were positive for α-SMA and negative for CD45 and CD31. Livin α level was upregulated in mouse LLC. Immunization with rAd-FAP/hlivin α-transduced DCs suppressed LLC volume and improved the survival of tumor-bearing mice. Immunization with rAd-FAP/hlivin α-transduced DCs enhanced the cytotoxic effect of splenic lymphocytes on LLC tumor-derived CAFs. CONCLUSION Injection with rAd-FAP/hlivin α-transduced DCs promotes immune-enhanced tumor microenvironment by decreasing CAFs and suppresses tumor growth in LLC mouse models.
Collapse
Affiliation(s)
- Zaiting Ye
- Department of RadiologyThe Sixth Affiliated Hospital of Wenzhou Medical UniversityLishuiZhejiangChina
| | - Jiongwei Pan
- Department of RespiratoryThe Sixth Affiliated Hospital of Wenzhou Medical UniversityLishuiZhejiangChina
| | - Zhangyong Yin
- Department of RespiratoryThe Sixth Affiliated Hospital of Wenzhou Medical UniversityLishuiZhejiangChina
| | - Shuanghu Wang
- Department of MedicineLishui People's HospitalLishuiZhejiangChina
| | - Yuling Li
- Department of RespiratoryThe Sixth Affiliated Hospital of Wenzhou Medical UniversityLishuiZhejiangChina
| | - Xiaoping Cai
- Department of RespiratoryThe Sixth Affiliated Hospital of Wenzhou Medical UniversityLishuiZhejiangChina
| | - Hao Zheng
- Department of RespiratoryThe Sixth Affiliated Hospital of Wenzhou Medical UniversityLishuiZhejiangChina
| | - Zhuo Cao
- Department of RespiratoryThe Sixth Affiliated Hospital of Wenzhou Medical UniversityLishuiZhejiangChina
| |
Collapse
|
5
|
Temporins: Multifunctional Peptides from Frog Skin. Int J Mol Sci 2023; 24:ijms24065426. [PMID: 36982501 PMCID: PMC10049141 DOI: 10.3390/ijms24065426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 03/03/2023] [Accepted: 03/08/2023] [Indexed: 03/14/2023] Open
Abstract
Temporins are short peptides secreted by frogs from all over the world. They exert antimicrobial activity, mainly against Gram-positive bacteria, including resistant pathogens; recent studies highlight other possible applications of these peptides as anticancer or antiviral agents. This review is meant to describe the main features of temporins produced by different ranid genera. Due to the abundance of published papers, we focus on the most widely investigated peptides. We report studies on their mechanism of action and three-dimensional structure in model systems mimicking bacterial membranes or in the presence of cells. The design and the antimicrobial activity of peptide analogues is also described, with the aim of highlighting elements that are crucial to improve the bioactivity of peptides while reducing their toxicity. Finally, a short section is dedicated to the studies aimed at applying these peptides as drugs, to produce new antimicrobial materials or in other technological uses.
Collapse
|
6
|
Xiao L, Yang X, Li J, Zhang P, Tang S, Cao D, Chen S, Li H, Zhang W, Chen G, Ni G, Wang T, Liu X. Caerin 1 Peptides, the Potential Jack-of-All-Trades for the Multiple Antibiotic-Resistant Bacterial Infection Treatment and Cancer Immunotherapy. BIOMED RESEARCH INTERNATIONAL 2022; 2022:7841219. [PMID: 35445137 PMCID: PMC9015854 DOI: 10.1155/2022/7841219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 03/17/2022] [Accepted: 03/24/2022] [Indexed: 12/24/2022]
Abstract
Antibiotic resistance-related bacterial infections and cancers become huge challenges in human health in the 21st century. A number of naturally derived antimicrobial peptides possess multiple functions in host defense, including anti-infective and anticancer activities. One of which is known as the caerin 1 family peptides. The microbicidal properties of these peptides have been long discussed. The recent studies also established the usage of two members in this family, caerin 1.1 and caerin 1.9, in antimultiple antibiotic-resistant bacteria species. It is increasingly evident that caerin 1.1 and caerin 1.9 also contain additional activities in the suppression of tumor. In this review, we briefly outline the therapeutic potentials and possible mechanism of action of caerin 1.1 and 1.9 in the treatment of multiple antibiotic-resistant bacterial infection and cancer immunotherapy.
Collapse
Affiliation(s)
- Liyin Xiao
- The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, Guangdong 510080, China
- Zhongao Biomedical Co. Ltd, Guangzhou, Guangdong 510080, China
| | - Xiaodan Yang
- The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, Guangdong 510080, China
| | - Junjie Li
- The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, Guangdong 510080, China
| | - Pingping Zhang
- Cancer Research Institute, First People's Hospital of Foshan, Foshan, Guangdong 528000, China
| | - Shuxian Tang
- Cancer Research Institute, First People's Hospital of Foshan, Foshan, Guangdong 528000, China
| | - Dongmin Cao
- Cancer Research Institute, First People's Hospital of Foshan, Foshan, Guangdong 528000, China
| | - Shu Chen
- Cancer Research Institute, First People's Hospital of Foshan, Foshan, Guangdong 528000, China
| | - Hejie Li
- Genecology Research Centre, University of the Sunshine Coast, Maroochydore DC, QLD 4558, Australia
| | - Wei Zhang
- The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, Guangdong 510080, China
| | - Guoqiang Chen
- Cancer Research Institute, First People's Hospital of Foshan, Foshan, Guangdong 528000, China
| | - Guoying Ni
- The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, Guangdong 510080, China
- Cancer Research Institute, First People's Hospital of Foshan, Foshan, Guangdong 528000, China
- Genecology Research Centre, University of the Sunshine Coast, Maroochydore DC, QLD 4558, Australia
| | - Tianfang Wang
- Genecology Research Centre, University of the Sunshine Coast, Maroochydore DC, QLD 4558, Australia
| | - Xiaosong Liu
- The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, Guangdong 510080, China
- Zhongao Biomedical Co. Ltd, Guangzhou, Guangdong 510080, China
- Cancer Research Institute, First People's Hospital of Foshan, Foshan, Guangdong 528000, China
| |
Collapse
|
7
|
Simonetti O, Rizzetto G, Radi G, Molinelli E, Cirioni O, Giacometti A, Offidani A. New Perspectives on Old and New Therapies of Staphylococcal Skin Infections: The Role of Biofilm Targeting in Wound Healing. Antibiotics (Basel) 2021; 10:antibiotics10111377. [PMID: 34827315 PMCID: PMC8615132 DOI: 10.3390/antibiotics10111377] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Revised: 11/06/2021] [Accepted: 11/07/2021] [Indexed: 12/31/2022] Open
Abstract
Among the most common complications of both chronic wound and surgical sites are staphylococcal skin infections, which slow down the wound healing process due to various virulence factors, including the ability to produce biofilms. Furthermore, staphylococcal skin infections are often caused by methicillin-resistant Staphylococcus aureus (MRSA) and become a therapeutic challenge. The aim of this narrative review is to collect the latest evidence on old and new anti-staphylococcal therapies, assessing their anti-biofilm properties and their effect on skin wound healing. We considered antibiotics, quorum sensing inhibitors, antimicrobial peptides, topical dressings, and antimicrobial photo-dynamic therapy. According to our review of the literature, targeting of biofilm is an important therapeutic choice in acute and chronic infected skin wounds both to overcome antibiotic resistance and to achieve better wound healing.
Collapse
Affiliation(s)
- Oriana Simonetti
- Department of Clinical and Molecular Sciences Clinic of Dermatology, Polytechnic University of Marche, 60020 Ancona, Italy; (G.R.); (G.R.); (E.M.); (A.O.)
- Correspondence: ; Tel.: +39-0-715-963-494
| | - Giulio Rizzetto
- Department of Clinical and Molecular Sciences Clinic of Dermatology, Polytechnic University of Marche, 60020 Ancona, Italy; (G.R.); (G.R.); (E.M.); (A.O.)
| | - Giulia Radi
- Department of Clinical and Molecular Sciences Clinic of Dermatology, Polytechnic University of Marche, 60020 Ancona, Italy; (G.R.); (G.R.); (E.M.); (A.O.)
| | - Elisa Molinelli
- Department of Clinical and Molecular Sciences Clinic of Dermatology, Polytechnic University of Marche, 60020 Ancona, Italy; (G.R.); (G.R.); (E.M.); (A.O.)
| | - Oscar Cirioni
- Department of Biomedical Sciences and Public Health Clinic of Infectious Diseases, Polytechnic University of Marche, 60020 Ancona, Italy; (O.C.); (A.G.)
| | - Andrea Giacometti
- Department of Biomedical Sciences and Public Health Clinic of Infectious Diseases, Polytechnic University of Marche, 60020 Ancona, Italy; (O.C.); (A.G.)
| | - Annamaria Offidani
- Department of Clinical and Molecular Sciences Clinic of Dermatology, Polytechnic University of Marche, 60020 Ancona, Italy; (G.R.); (G.R.); (E.M.); (A.O.)
| |
Collapse
|
8
|
Casciaro B, Loffredo MR, Cappiello F, Fabiano G, Torrini L, Mangoni ML. The Antimicrobial Peptide Temporin G: Anti-Biofilm, Anti-Persister Activities, and Potentiator Effect of Tobramycin Efficacy Against Staphylococcus aureus. Int J Mol Sci 2020; 21:ijms21249410. [PMID: 33321906 PMCID: PMC7764207 DOI: 10.3390/ijms21249410] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 12/05/2020] [Accepted: 12/08/2020] [Indexed: 01/10/2023] Open
Abstract
Bacterial biofilms are a serious threat for human health, and the Gram-positive bacterium Staphylococcus aureus is one of the microorganisms that can easily switch from a planktonic to a sessile lifestyle, providing protection from a large variety of adverse environmental conditions. Dormant non-dividing cells with low metabolic activity, named persisters, are tolerant to antibiotic treatment and are the principal cause of recalcitrant and resistant infections, including skin infections. Antimicrobial peptides (AMPs) hold promise as new anti-infective agents to treat such infections. Here for the first time, we investigated the activity of the frog-skin AMP temporin G (TG) against preformed S. aureus biofilm including persisters, as well as its efficacy in combination with tobramycin, in inhibiting S. aureus growth. TG was found to provoke ~50 to 100% reduction of biofilm viability in the concentration range from 12.5 to 100 µM vs ATCC and clinical isolates and to be active against persister cells (about 70–80% killing at 50–100 µM). Notably, sub-inhibitory concentrations of TG in combination with tobramycin were able to significantly reduce S. aureus growth, potentiating the antibiotic power. No critical cytotoxicity was detected when TG was tested in vitro up to 100 µM against human keratinocytes, confirming its safety profile for the development of a new potential anti-infective drug, especially for treatment of bacterial skin infections.
Collapse
Affiliation(s)
- Bruno Casciaro
- Center For Life Nano Science@Sapienza, Istituto Italiano di Tecnologia, Viale Regina Elena 291, 00161 Rome, Italy
- Correspondence: (B.C.); (M.L.M.); Tel.: +39-0649910838 (M.L.M.)
| | - Maria Rosa Loffredo
- Laboratory Affiliated to Pasteur Italia-Fondazione Cenci Bolognetti, Department of Biochemical Sciences, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy; (M.R.L.); (F.C.); (G.F.); (L.T.)
| | - Floriana Cappiello
- Laboratory Affiliated to Pasteur Italia-Fondazione Cenci Bolognetti, Department of Biochemical Sciences, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy; (M.R.L.); (F.C.); (G.F.); (L.T.)
| | - Guendalina Fabiano
- Laboratory Affiliated to Pasteur Italia-Fondazione Cenci Bolognetti, Department of Biochemical Sciences, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy; (M.R.L.); (F.C.); (G.F.); (L.T.)
| | - Luisa Torrini
- Laboratory Affiliated to Pasteur Italia-Fondazione Cenci Bolognetti, Department of Biochemical Sciences, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy; (M.R.L.); (F.C.); (G.F.); (L.T.)
| | - Maria Luisa Mangoni
- Laboratory Affiliated to Pasteur Italia-Fondazione Cenci Bolognetti, Department of Biochemical Sciences, Sapienza University of Rome, P.le Aldo Moro 5, 00185 Rome, Italy; (M.R.L.); (F.C.); (G.F.); (L.T.)
- Correspondence: (B.C.); (M.L.M.); Tel.: +39-0649910838 (M.L.M.)
| |
Collapse
|
9
|
Functional Characterization of Temporin-SHe, a New Broad-Spectrum Antibacterial and Leishmanicidal Temporin-SH Paralog from the Sahara Frog ( Pelophylax saharicus). Int J Mol Sci 2020; 21:ijms21186713. [PMID: 32933215 PMCID: PMC7555312 DOI: 10.3390/ijms21186713] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2020] [Revised: 09/08/2020] [Accepted: 09/10/2020] [Indexed: 02/06/2023] Open
Abstract
Amphibian skin is a promising natural resource for antimicrobial peptides (AMPs), key effectors of innate immunity with attractive therapeutic potential to fight antibiotic-resistant pathogens. Our previous studies showed that the skin of the Sahara Frog (Pelophylax saharicus) contains broad-spectrum AMPs of the temporin family, named temporins-SH. Here, we focused our study on temporin-SHe, a temporin-SHd paralog that we have previously identified in this frog but was never structurally and functionally characterized. We synthesized and determined the structure of temporin-SHe. This non-amphipathic α-helical peptide was demonstrated to strongly destabilize the lipid chain packing of anionic multilamellar vesicles mimicking bacterial membranes. Investigation of the antimicrobial activity revealed that temporin-SHe targets Gram-negative and Gram-positive bacteria, including clinical isolates of multi-resistant Staphylococcus aureus strains. Temporin-SHe exhibited also antiparasitic activity toward different Leishmania species responsible for visceral leishmaniasis, as well as cutaneous and mucocutaneous forms. Functional assays revealed that temporin-SHe exerts bactericidal effects with membrane depolarization and permeabilization, via a membranolytic mechanism observed by scanning electron microscopy. Temporin-SHe represents a new member of the very limited group of antiparasitic temporins/AMPs. Despite its cytotoxicity, it is nevertheless an interesting tool to study the AMP antiparasitic mechanism and design new antibacterial/antiparasitic agents.
Collapse
|
10
|
Abstract
In recent years, peptides have received increased interest in pharmaceutical, food, cosmetics and various other fields [...].
Collapse
|