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Bermúdez-Puga S, Dias M, Freire de Oliveira T, Mendonça CMN, Yokomizo de Almeida SR, Rozas EE, do Nascimento CAO, Mendes MA, Oliveira De Souza de Azevedo P, Almeida JR, Proaño-Bolaños C, Oliveira RPDS. Dual antibacterial mechanism of [K4K15]CZS-1 against Salmonella Typhimurium: a membrane active and intracellular-targeting antimicrobial peptide. Front Microbiol 2023; 14:1320154. [PMID: 38156004 PMCID: PMC10752938 DOI: 10.3389/fmicb.2023.1320154] [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: 10/11/2023] [Accepted: 11/17/2023] [Indexed: 12/30/2023] Open
Abstract
Salmonella genus is a leading cause of food-borne infections with strong public health impact and economic ramifications. The development of antimicrobial resistance added complexity to this scenario and turned the antibiotic drug discovery into a highly important challenge. The screening of peptides has served as a successful discovery platform to design new antibiotic candidates. Motivated by this, the antimicrobial and cytotoxic properties of three cruzioseptins against Salmonella Typhimurium and RAW 264.7 murine macrophage cells, respectively, were investigated. [K4K15]CZS-1 was the most potent antimicrobial peptide identified in the screening step with a minimum inhibitory concentration (MIC) of 16 μg/mL (7.26 μM) and moderate cytotoxicity. From a structural point of view, in vitro and in silico techniques evidenced that [K4K15]CZS-1 is a α-helical cationic antimicrobial peptide. In order to capture mechanistic details and fully decipher their antibacterial action, we adopted a multidimensional approach, including spectroscopy, electron microscopy and omics analysis. In general lines, [K4K15]CZS-1 caused membrane damage, intracellular alterations in Salmonella and modulated metabolic pathways, such as the tricarboxylic acid (TCA) cycle, fatty acid biosynthesis, and lipid metabolism. Overall, these findings provide deeper insights into the antibacterial properties and multidimensional mode of action of [K4K15]CZS-1 against Salmonella Typhimurium. In summary, this study represents a first step toward the screening of membrane-acting and intracellular-targeting peptides as potential bio-preservatives to prevent foodborne outbreaks caused by Salmonella.
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Affiliation(s)
- Sebastián Bermúdez-Puga
- Microbial Biomolecules Laboratory, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Meriellen Dias
- Microbial Biomolecules Laboratory, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | - Taciana Freire de Oliveira
- Microbial Biomolecules Laboratory, Faculty of Pharmaceutical Sciences, University of São Paulo, São Paulo, Brazil
| | | | | | - Enrique Eduardo Rozas
- Dempster MS Lab, Chemical Engineering Department of Polytechnic School of University of São Paulo, São Paulo, Brazil
| | | | - Maria Anita Mendes
- Dempster MS Lab, Chemical Engineering Department of Polytechnic School of University of São Paulo, São Paulo, Brazil
| | | | - José R. Almeida
- Biomolecules Discovery Group, Universidad Regional Amazónica Ikiam, Tena, Napo, Ecuador
- School of Pharmacy, University of Reading, Reading, United Kingdom
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2
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Past, Present, and Future of Naturally Occurring Antimicrobials Related to Snake Venoms. Animals (Basel) 2023; 13:ani13040744. [PMID: 36830531 PMCID: PMC9952678 DOI: 10.3390/ani13040744] [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: 12/15/2022] [Revised: 02/10/2023] [Accepted: 02/11/2023] [Indexed: 02/22/2023] Open
Abstract
This review focuses on proteins and peptides with antimicrobial activity because these biopolymers can be useful in the fight against infectious diseases and to overcome the critical problem of microbial resistance to antibiotics. In fact, snakes show the highest diversification among reptiles, surviving in various environments; their innate immunity is similar to mammals and the response of their plasma to bacteria and fungi has been explored mainly in ecological studies. Snake venoms are a rich source of components that have a variety of biological functions. Among them are proteins like lectins, metalloproteinases, serine proteinases, L-amino acid oxidases, phospholipases type A2, cysteine-rich secretory proteins, as well as many oligopeptides, such as waprins, cardiotoxins, cathelicidins, and β-defensins. In vitro, these biomolecules were shown to be active against bacteria, fungi, parasites, and viruses that are pathogenic to humans. Not only cathelicidins, but all other proteins and oligopeptides from snake venom have been proteolyzed to provide short antimicrobial peptides, or for use as templates for developing a variety of short unnatural sequences based on their structures. In addition to organizing and discussing an expressive amount of information, this review also describes new β-defensin sequences of Sistrurus miliarius that can lead to novel peptide-based antimicrobial agents, using a multidisciplinary approach that includes sequence phylogeny.
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3
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Gourkhede DP, Dani Nishanth MA, Ram VP, Abishad P, Yasur J, Pollumahanti N, Vergis J, Singh Malik SV, Barbuddhe SB, Rawool DB. Antimicrobial efficacy of chitosan encapsulated Cecropin- A (1–7)- melittin-cell-penetrating peptide against multi-drug-resistant Salmonella Enteritidis. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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4
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de Moura GA, de Oliveira JR, Rocha YM, de Oliveira Freitas J, Rodrigues JPV, Ferreira VPG, Nicolete R. Antitumor and antiparasitic activity of antimicrobial peptides derived from snake venom: a systematic review approach. Curr Med Chem 2022; 29:5358-5368. [PMID: 35524668 DOI: 10.2174/0929867329666220507011719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Revised: 02/07/2022] [Accepted: 03/03/2022] [Indexed: 11/22/2022]
Abstract
BACKGROUND In a scenario of increased pathogens with multidrug resistance phenotypes, it is necessary to seek new pharmacological options. This fact is responsible for an increase in neoplasms and multiresistant parasitic diseases. In turn, snake venom-derived peptides exhibited cytotoxic action on fungal and bacterial strains, possibly presenting activities in resistant tumor cells and parasites. Therefore, the aim of this work is to verify an antitumor and antiparasitic activity of antimicrobial peptides derived from snake venom. METHODS For this purpose, searches were performed in the Pubmed, Embase and Virtual Health Library databases by combining the descriptors peptides, venom and snake with antitumor/ antiparasitic agent and in silico. The inclusion criteria: in vitro and in vivo experimental articles in addition to in silico studies. The exclusion criteria: articles that were out of scope, review articles, abstracts, and letters to the reader. Data extracted: peptide name, peptide sequence, semi-maximal inhibitory concentration, snake species, tumor lineage or parasitic strain, cytotoxicity, in vitro and in vivo activity. RESULTS In total 164 articles were found, of which 14 were used. A total of ten peptides with antiproliferative activity on tumor cells were identified. Among the articles, seven peptides addressed the antiparasitic activity. CONCLUSION In conclusion, snake venom-derived peptides can be considered as potential pharmacological options for parasites and tumors, however more studies are needed to prove their specific activity.
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Affiliation(s)
| | - Juliana R de Oliveira
- Cruz Foundation (Fiocruz Ceará), Eusébio-CE, Brazil.,Northeast Network of Biotechnology (RENORBIO), State University of Ceará (UECE), Fortaleza-CE, Brazil
| | - Yasmim M Rocha
- Cruz Foundation (Fiocruz Ceará), Eusébio-CE, Brazil.,Program in Pharmaceutical Sciences, Federal University of Ceará (UFC), Fortaleza-CE, Brazil
| | | | - João Pedro V Rodrigues
- Cruz Foundation (Fiocruz Ceará), Eusébio-CE, Brazil.,Program in Pharmaceutical Sciences, Federal University of Ceará (UFC), Fortaleza-CE, Brazil
| | - Vanessa P G Ferreira
- Cruz Foundation (Fiocruz Ceará), Eusébio-CE, Brazil.,Northeast Network of Biotechnology (RENORBIO), State University of Ceará (UECE), Fortaleza-CE, Brazil
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5
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Roque-Borda CA, Souza Saraiva MDM, Monte DFM, Rodrigues Alves LB, de Almeida AM, Ferreira TS, de Lima TS, Benevides VP, Cabrera JM, Claire S, Meneguin AB, Chorilli M, Pavan FR, Junior AB, Vicente EF. HPMCAS-Coated Alginate Microparticles Loaded with Ctx(Ile 21)-Ha as a Promising Antimicrobial Agent against Salmonella Enteritidis in a Chicken Infection Model. ACS Infect Dis 2022; 8:472-481. [PMID: 35230825 DOI: 10.1021/acsinfecdis.1c00264] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Salmonella enterica subsp. enterica serovar Enteritidis (S. Enteritidis) in poultry is most often transmitted by the fecal-oral route, which can be attributed to high population density. Upon encountering the innate immune response in a host, the pathogen triggers a stress response and virulence factors to help it survive in the host. The aim of this study was to evaluate the effect of hypromellose acetate/succinate (HPMCAS)-coated alginate microparticles containing the Ctx(Ile21)-Ha antimicrobial peptide (AMP) on both intestinal colonization and systemic infection of laying hens challenged with S. Enteritidis. The applied AMP microsystem reduced the bacterial load of S. Enteritidis in the liver, with a statistical significance between groups A (control, no Ctx(Ile21)-Ha peptide) and B (2.5 mg of Ctx(Ile21)-Ha/kg) at 2 days postinfection (dpi), potentially indicating the effectiveness of Ctx(Ile21)-Ha in the first stage of infection by S. Enteritidis. In addition, the results showed a significant decrease in the S. Enteritidis counts in the spleen and cecal content at 5 dpi; remarkably, no S. Enteritidis counts were observed in livers at 5, 7, and 14 dpi, regardless of the Ctx(Ile21)-Ha dosage (p-value <0.0001). Using the Chi-square test, the effect of AMP microparticles on S. Enteritidis fecal excretion was also evaluated, and a significantly lower bacterial excretion was observed over 21 days in groups B and C, in comparison with the untreated control (p-value <0.05). In summary, the use of HPMCAS-Ctx(Ile21)-Ha peptide microcapsules in laying hens drastically reduced the systemic infection of S. Enteritidis, mainly in the liver, indicating a potential for application as a feed additive against this pathogen.
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Affiliation(s)
- Cesar Augusto Roque-Borda
- São Paulo State University (UNESP), School of Agricultural and Veterinarian Sciences, Jaboticabal, São Paulo, Brazil 14884-900
- Universidad Católica de Santa María, Vicerrectorado de Investigación, Arequipa, Peru 04013
| | - Mauro de Mesquita Souza Saraiva
- São Paulo State University (UNESP), School of Agricultural and Veterinarian Sciences, Jaboticabal, São Paulo, Brazil 14884-900
| | - Daniel F. M. Monte
- São Paulo State University (UNESP), School of Agricultural and Veterinarian Sciences, Jaboticabal, São Paulo, Brazil 14884-900
| | - Lucas Bocchini Rodrigues Alves
- São Paulo State University (UNESP), School of Agricultural and Veterinarian Sciences, Jaboticabal, São Paulo, Brazil 14884-900
| | - Adriana Maria de Almeida
- São Paulo State University (UNESP), School of Agricultural and Veterinarian Sciences, Jaboticabal, São Paulo, Brazil 14884-900
| | - Taísa Santiago Ferreira
- São Paulo State University (UNESP), School of Agricultural and Veterinarian Sciences, Jaboticabal, São Paulo, Brazil 14884-900
| | - Túlio Spina de Lima
- São Paulo State University (UNESP), School of Agricultural and Veterinarian Sciences, Jaboticabal, São Paulo, Brazil 14884-900
| | - Valdinete Pereira Benevides
- São Paulo State University (UNESP), School of Agricultural and Veterinarian Sciences, Jaboticabal, São Paulo, Brazil 14884-900
| | - Julia Memrava Cabrera
- São Paulo State University (UNESP), School of Agricultural and Veterinarian Sciences, Jaboticabal, São Paulo, Brazil 14884-900
| | - Sunil Claire
- School of Chemistry, The University of Birmingham, Edgbaston, Birmingham, United Kingdom B15 2TT
| | - Andréia Bagliotti Meneguin
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara, São Paulo, Brazil 14801-902
| | - Marlus Chorilli
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara, São Paulo, Brazil 14801-902
| | - Fernando Rogério Pavan
- São Paulo State University (UNESP), School of Pharmaceutical Sciences, Araraquara, São Paulo, Brazil 14801-902
| | - Angelo Berchieri Junior
- São Paulo State University (UNESP), School of Agricultural and Veterinarian Sciences, Jaboticabal, São Paulo, Brazil 14884-900
| | - Eduardo Festozo Vicente
- São Paulo State University (UNESP), School of Sciences and Engineering, Tupã, São Paulo, Brazil 17602-496
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Yu H, Shang L, Yang G, Dai Z, Zeng X, Qiao S. Biosynthetic Microcin J25 Exerts Strong Antibacterial, Anti-Inflammatory Activities, Low Cytotoxicity Without Increasing Drug-Resistance to Bacteria Target. Front Immunol 2022; 13:811378. [PMID: 35250983 PMCID: PMC8894198 DOI: 10.3389/fimmu.2022.811378] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2021] [Accepted: 01/27/2022] [Indexed: 12/15/2022] Open
Abstract
Multidrug resistant (MDR) bacterial infection has emerged, raising concerns about untreatable infections, and posing the highest health risks. Antimicrobial peptides (AMPs) are thought to be the best remedy for this problem. Here, we showed biosynthetic microcin J25 (MccJ25) exhibited excellent bactericidal activity against standard and clinically relevant veterinary MDR strains with high stability, no cytotoxicity, and no increase in drug resistance. Analysis of antimicrobial mechanism possessed by sensitive enterotoxigenic Escherichia coli (ETEC) based on electron microscopy and Sytox Green methods was carried out. Results showed excellent activity against ETEC was due to permeabilizing bacterial membranes and strong affinity. MccJ25 exhibited high endotoxin-neutralizing activity in both in vivo and in vitro environments, and mice exposed to lipopolysaccharide (LPS) showed decreased plasma LPS levels and improved survival after administration of MccJ25. In an LPS-treated mouse septicemia model, MccJ25 treatment significantly alleviated inflammatory responses by inhibiting proinflammatory factor secretion and expression. In a mouse E. coli infection model, administration of MccJ25 effectively improved host defense against clinically source cocktail of multidrug-resistant E. coli strains induced intestinal inflammation and bacteria dissemination. Results of studies on anti-inflammatory mechanisms showed that MccJ25 downregulated nuclear factor kappa B kinase and mitogen-activated protein kinase, thereby reducing the production of toll-like receptor 4, myeloid differentiation factor 88 and decreasing the key proinflammatory cytokines. These findings clarify MccJ25 may be an ideal antibacterial/antiendotoxic drug candidate that has the potential to further guide the development of anti-inflammatory and/or antimicrobial agents in the war against MDR bacterial infection.
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Affiliation(s)
- Haitao Yu
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture and Rural Affairs Feed Industry Center, China Agricultural University, Beijing, China
- Department of Immunology, Beijing Key Laboratory of Tumor Systems Biology, Institute of Systems Biomedicine, School of Basic Medical Sciences, Peking University Health Science Center, Beijing, China
| | - Lijun Shang
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture and Rural Affairs Feed Industry Center, China Agricultural University, Beijing, China
- Beijing Key Laboratory of Biofeed Additives, China Agricultural University, Beijing, China
| | - Guangxin Yang
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture and Rural Affairs Feed Industry Center, China Agricultural University, Beijing, China
- Beijing Key Laboratory of Biofeed Additives, China Agricultural University, Beijing, China
| | - Ziqi Dai
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture and Rural Affairs Feed Industry Center, China Agricultural University, Beijing, China
- Beijing Key Laboratory of Biofeed Additives, China Agricultural University, Beijing, China
| | - Xiangfang Zeng
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture and Rural Affairs Feed Industry Center, China Agricultural University, Beijing, China
- Beijing Key Laboratory of Biofeed Additives, China Agricultural University, Beijing, China
| | - Shiyan Qiao
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture and Rural Affairs Feed Industry Center, China Agricultural University, Beijing, China
- Beijing Key Laboratory of Biofeed Additives, China Agricultural University, Beijing, China
- *Correspondence: Shiyan Qiao,
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7
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Gut AM, Vasiljevic T, Yeager T, Donkor ON. Anti-salmonella properties of kefir yeast isolates : An in vitro screening for potential infection control. Saudi J Biol Sci 2022; 29:550-563. [PMID: 35002451 PMCID: PMC8717153 DOI: 10.1016/j.sjbs.2021.09.025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Revised: 09/08/2021] [Accepted: 09/09/2021] [Indexed: 11/26/2022] Open
Abstract
The rise of antibiotic resistance has increased the need for alternative ways of preventing and treating enteropathogenic bacterial infection. Various probiotic bacteria have been used in animal and human. However, Saccharomyces boulardii is the only yeast currently used in humans as probiotic. There is scarce research conducted on yeast species commonly found in kefir despite its claimed potential preventative and curative effects. This work focused on adhesion properties, and antibacterial metabolites produced by Kluyveromyces lactis and Saccharomyces unisporus isolated from traditional kefir grains compared to Saccharomyces boulardii strains. Adhesion and sedimentation assay, slide agglutination, microscopy and turbidimetry assay were used to analyze adhesion of Salmonella Arizonae and Salmonella Typhimurium onto yeast cells. Salmonella growth inhibition due to the antimicrobial metabolites produced by yeasts in killer toxin medium was analyzed by slab on the lawn, turbidimetry, tube dilution and solid agar plating assays. Alcohol and antimicrobial proteins production by yeasts in killer toxin medium were analyzed using gas chromatography and shotgun proteomics, respectively. Salmonella adhered onto viable and non-viable yeast isolates cell wall. Adhesion was visualized using scanning electron microscope. Yeasts-fermented killer toxin medium showed Salmonella growth inhibition. The highest alcohol concentration detected was 1.55%, and proteins with known antimicrobial properties including cathelicidin, xanthine dehydrogenase, mucin-1, lactadherin, lactoperoxidase, serum amyloid A protein and lactotransferrin were detected in yeasts fermented killer medium. These proteins are suggested to be responsible for the observed growth inhibition effect of yeasts-fermented killer toxin medium. Kluyveromyces lactis and Saccharomyces unisporus have anti-salmonella effect comparable to Saccharomyces boulardii strains, and therefore have potential to control Salmonella infection.
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Key Words
- AGC, Automatic Gain Control
- ATCC, American type Culture Collection
- ATP, Adenosine triphosphate
- CFS, Cell Free Supernatant
- CFU, Colony Forming Unit
- DNA, Deoxyribonucleic Acid
- DSR, Desk Sputter Coater
- DTT, Dithiothreitol
- FAO, Food Agriculture Organization
- GIT, The gastrointestinal tract
- HCL, Hydrochloric Acid
- HPLC, High-performance liquid chromatography
- IBM, International Business Machines
- KTM, Killer Toxin Cedium
- Kefir
- Kluyveromyces lactis
- LC-MS/MS, Liquid Chromatography with tandem mass spectrometry/Liquid Chromatography with tandem mass spectrometry
- LFQ, Label Free Quantitation
- Min, Minute
- NaOH, Sodium hydroxide
- PBS, Phosphate buffered saline
- Probiotics
- RNA, Ribonucleic Acid
- RSLC, Rapid Separation Liquid Chromatography
- SD, Standard Deviation
- SPSS, Statistical Package for the Social Sciences
- Saccharomyces boulardii
- Saccharomyces unisporus
- Salmonella
- Shotgun proteomics
- WHO, World Health Organization
- YEPDA, Yeast Extract Peptone Dextrose Agar
- YEPDB, Yeast Extract Peptone Dextrose Broth
- Yeasts
- h, Hour
- mL, Milliliter
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Affiliation(s)
- Abraham Majak Gut
- Institute for Sustainable Industries and Liveable Cities, Victoria University, Werribee Campus, PO Box 14428, Melbourne, Victoria 8001, Australia.,College of Health and Biomedicine, Victoria University, Werribee Campus, PO Box 14428, Melbourne, Victoria 8001, Australia
| | - Todor Vasiljevic
- Institute for Sustainable Industries and Liveable Cities, Victoria University, Werribee Campus, PO Box 14428, Melbourne, Victoria 8001, Australia.,College of Health and Biomedicine, Victoria University, Werribee Campus, PO Box 14428, Melbourne, Victoria 8001, Australia
| | - Thomas Yeager
- Institute for Sustainable Industries and Liveable Cities, Victoria University, Werribee Campus, PO Box 14428, Melbourne, Victoria 8001, Australia.,First YearCollege, Victoria University, Werribee Campus, PO Box 14428, Melbourne, Victoria 8001, Australia
| | - Osaana N Donkor
- Institute for Sustainable Industries and Liveable Cities, Victoria University, Werribee Campus, PO Box 14428, Melbourne, Victoria 8001, Australia.,College of Health and Biomedicine, Victoria University, Werribee Campus, PO Box 14428, Melbourne, Victoria 8001, Australia
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8
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Gut AM, Vasiljevic T, Yeager T, Donkor ON. Antimicrobial properties of traditional kefir: An in vitro screening for antagonistic effect on Salmonella Typhimurium and Salmonella Arizonae. Int Dairy J 2022. [DOI: 10.1016/j.idairyj.2021.105180] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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9
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Paudel S, Peña-Bahamonde J, Shakiba S, Astete CE, Louie SM, Sabliov CM, Rodrigues DF. Prevention of infection caused by enteropathogenic E. coli O157:H7 in intestinal cells using enrofloxacin entrapped in polymer based nanocarriers. JOURNAL OF HAZARDOUS MATERIALS 2021; 414:125454. [PMID: 33677317 DOI: 10.1016/j.jhazmat.2021.125454] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/09/2020] [Revised: 01/27/2021] [Accepted: 02/15/2021] [Indexed: 06/12/2023]
Abstract
Poor bioavailability of antibiotics, toxicity, and development of antibiotic-resistant bacteria jeopardize antibiotic treatments. To circumvent these issues, drug delivery using nanocarriers are highlighted to secure the future of antibiotic treatments. This work investigated application of nanocarriers, to prevent and treat bacterial infection, presenting minimal toxicity to the IPEC-J2 cell line. To accomplish this, polymer-based nanoparticles (NPs) of poly(lactide-co-glycolide) (PLGA) and lignin-graft-PLGA (LNP) loaded with enrofloxacin (ENFLX) were synthesized, yielding spherical particles with average sizes of 111.8 ± 0.6 nm (PLGA) and 117.4 ± 0.9 nm (LNP). The releases of ENFLX from PLGA and LNP were modeled by a theoretical diffusion model considering both the NP and dialysis diffusion barriers for drug release. Biocompatible concentrations of ENFLX, enrofloxacin loaded PLGA(Enflx) and LNP(Enflx) were determined based on examination of bacterial inhibition, toxicity, and ROS generation. Biocompatible concentrations were used for treatment of higher- and lower-level infections in IPEC-J2 cells. Prevention of bacterial infection by LNP(Enflx) was enhanced more than 50% compared to ENFLX at lower-level infection. At higher-level infection, PLGA(Enflx) and LNP(Enflx) demonstrated 25% higher prevention of bacteria growth compared to ENFLX alone. The superior treatment achieved by the nanocarried drug is accredited to particle uptake by endocytosis and slow release of the drug intracellularly, preventing rapid bacterial growth inside the cells.
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Affiliation(s)
- Sachin Paudel
- Department of Civil and Environmental Engineering, University of Houston, Houston, TX 77204-4003, USA
| | - Janire Peña-Bahamonde
- Department of Civil and Environmental Engineering, University of Houston, Houston, TX 77204-4003, USA
| | - Sheyda Shakiba
- Department of Civil and Environmental Engineering, University of Houston, Houston, TX 77204-4003, USA
| | - Carlos E Astete
- Department of Biological and Agricultural Engineering, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Stacey M Louie
- Department of Civil and Environmental Engineering, University of Houston, Houston, TX 77204-4003, USA
| | - Cristina M Sabliov
- Department of Biological and Agricultural Engineering, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Debora F Rodrigues
- Department of Civil and Environmental Engineering, University of Houston, Houston, TX 77204-4003, USA.
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10
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Nazeer N, Uribe-Diaz S, Rodriguez-Lecompte JC, Ahmed M. Antimicrobial peptides as an alternative to relieve antimicrobial growth promoters in poultry. Br Poult Sci 2021; 62:672-685. [PMID: 33908289 DOI: 10.1080/00071668.2021.1919993] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
1. This review describes different classes of antimicrobial peptides (AMP) found in the gastrointestinal (GI) tract of avian species, and their antimicrobial and immunomodulatory activities. The potential benefits of synthetic AMP in poultry production are examined, in the context of the use of AMP as alternatives to antimicrobial growth promoters (AGP).2. Since the mid-1950s, antibiotic growth promoters (AGP) have been used in feed at low prophylactic doses to modulate the homoeostasis of intestinal microbiota, decreasing the risk of intestinal dysbacteriosis and the growth of pathogens within the avian gut. Over the last three decades, AGP have faced major regulatory restrictions due to concerns of generating antimicrobial resistance (AMR). It is now well documented that the rate of infectious disease outbreaks is higher in flocks that are not fed prophylactic antibiotics, resulting in a compensatory increase in antimicrobial use for therapeutic purposes.3. Endogenous natural AMP production is associated with the presence of microbiota and their interaction with the intestinal epithelial and lamina propria lymphoid cells. Their antimicrobial activity shapes the beneficial microbiota population and controls intestinal pathogens such Clostridium and Salmonella spp., and stimulates the development and maturation of the local immune system.4. Similar to AGP, AMP can establish a well-balanced gut beneficial microbiota for adequate immune-competence, animal health and high growth performance parameters such as feed intake, daily weight, feed conversion and accumulated mortality.5. Antimicrobial proteins and peptides constitute an essential part of the innate immune system of all organisms and protect the host from invading pathogenic bacteria, viruses, fungi, and parasites by interacting with the negatively charged pathogen membranes.
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Affiliation(s)
- N Nazeer
- Department of Chemistry, University of Prince Edward Island, Charlottetown, Canada
| | - S Uribe-Diaz
- Department of Chemistry, University of Prince Edward Island, Charlottetown, Canada.,Atlantic Veterinary College, University of Prince Edward Island, Charlottetown, Canada
| | | | - M Ahmed
- Department of Chemistry, University of Prince Edward Island, Charlottetown, Canada
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11
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Han S, Wen Y, Yang F, He P. Chicken Egg Yolk Antibody (IgY) Protects Mice Against Enterotoxigenic Escherichia coli Infection Through Improving Intestinal Health and Immune Response. Front Cell Infect Microbiol 2021; 11:662710. [PMID: 33928047 PMCID: PMC8076637 DOI: 10.3389/fcimb.2021.662710] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 03/25/2021] [Indexed: 11/13/2022] Open
Abstract
Chicken egg yolk antibody (IgY), considered as a potential substitute for antibiotics, has been used for preventing pathogens infection in food, human and animals. This study investigated effects of IgY on growth, adhesion inhibitory and morphology of enterotoxigenic Escherichia coli (ETEC) K88 in vitro, and evaluated the protective effects of IgY on intestinal health and immune response of mice infected with ETEC in vivo. Sixty pathogen-free C57BL/6J (4-6 weeks of age) mice were divided into six treatments: control (neither IgY nor ETEC infection), ETEC infection, ETEC-infected mice treated with 250 μL of high-dose (32 mg/mL), medium-dose (16 mg/mL) or low-dose (8 mg/mL) anti-ETEC IgY, or ETEC-infected mice treated with 250 μL of non-specific IgY (16 mg/mL). Anti-ETEC IgY inhibited ETEC growth, reduced adherence of ETEC to intestinal epithelial cells J2 and damaged the morphology and integrity of ETEC cell. Oral administration of anti-ETEC IgY effectively ameliorated ETEC-induced clinical signs, reduced ETEC colonization and intestinal permeability, alleviated inflammatory response through reducing the production and expression of proinflammatory cytokines, improved intestinal morphology, and inhibited excessive activation of the mucosal immune response of challenged mice. The overall protective effects of high-dose and medium-dose anti-ETEC IgY against ETEC infection were more effective. These results suggest that anti-ETEC IgY may function as a promising novel prophylactic agent against enteric pathogens infection.
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Affiliation(s)
- Shuaijuan Han
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China.,College of Animal Science and Technology, Hebei Agricultural University, Baoding, China
| | - Yang Wen
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Fengfan Yang
- Hubei Shendi Biological Technology Co., LTD, Jingmen, China
| | - Pingli He
- State Key Laboratory of Animal Nutrition, College of Animal Science and Technology, China Agricultural University, Beijing, China
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12
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Role of OB-Fold Protein YdeI in Stress Response and Virulence of Salmonella enterica Serovar Enteritidis. J Bacteriol 2020; 203:JB.00237-20. [PMID: 33106344 DOI: 10.1128/jb.00237-20] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Accepted: 10/01/2020] [Indexed: 01/11/2023] Open
Abstract
An essential feature of the pathogenesis of the Salmonella enterica serovar Enteritidis wild type (WT) is its ability to survive under diverse microenvironmental stress conditions, such as encountering antimicrobial peptides (AMPs) or glucose and micronutrient starvation. These stress factors trigger virulence genes carried on Salmonella pathogenicity islands (SPIs) and determine the efficiency of enteric infection. Although the oligosaccharide/oligonucleotide binding-fold (OB-fold) family of proteins has been identified as an important stress response and virulence determinant, functional information on members of this family is currently limited. In this study, we decipher the role of YdeI, which belongs to OB-fold family of proteins, in stress response and virulence of S Enteritidis. When ydeI was deleted, the ΔydeI mutant showed reduced survival during exposure to AMPs or glucose and Mg2+ starvation stress compared to the WT. Green fluorescent protein (GFP) reporter and quantitative real-time PCR (qRT-PCR) assays showed ydeI was transcriptionally regulated by PhoP, which is a major regulator of stress and virulence. Furthermore, the ΔydeI mutant displayed ∼89% reduced invasion into HCT116 cells, ∼15-fold-reduced intramacrophage survival, and downregulation of several SPI-1 and SPI-2 genes encoding the type 3 secretion system apparatus and effector proteins. The mutant showed attenuated virulence compared to the WT, confirmed by its reduced bacterial counts in feces, mesenteric lymph node (mLN), spleen, and liver of C57BL/6 mice. qRT-PCR analyses of the ΔydeI mutant displayed differential expression of 45 PhoP-regulated genes, which were majorly involved in metabolism, transport, membrane remodeling, and drug resistance under different stress conditions. YdeI is, therefore, an important protein that modulates S Enteritidis virulence and adaptation to stress during infection.IMPORTANCE S Enteritidis during its life cycle encounters diverse stress factors inside the host. These intracellular conditions allow activation of specialized secretion systems to cause infection. We report a conserved membrane protein, YdeI, and elucidate its role in protection against various intracellular stress conditions. A key aspect of the study of a pathogen's stress response mechanism is its clinical relevance during host-pathogen interaction. Bacterial adaptation to stress plays a vital role in evolution of a pathogen's resistance to therapeutic agents. Therefore, investigation of the role of YdeI is vital for understanding the molecular basis of regulation of Salmonella pathogenesis. In conclusion, our findings may contribute to finding potential targets to develop new intervention strategies for treatment and prevention of enteric diseases.
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13
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Arunima A, Swain SK, Ray S, Prusty BK, Suar M. RpoS-regulated SEN1538 gene promotes resistance to stress and influences Salmonella enterica serovar enteritidis virulence. Virulence 2020; 11:295-314. [PMID: 32193977 PMCID: PMC7161692 DOI: 10.1080/21505594.2020.1743540] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
Abstract
Salmonella enterica serovar Enteritidis (S. Enteritidis; wild type (WT)) is a major cause of foodborne illness globally. The ability of this pathogen to survive stress inside and outside the host, such as encountering antimicrobial peptides and heat stress, determines the efficiency of enteric infection. These stressors concertedly trigger virulence factors encoded on Salmonella pathogenicity islands (SPIs). Although RpoS is a well-known central transcriptional stress and virulence regulator, functional information regarding the genes of the regulon is currently limited. Here, we identified SEN1538 as a conserved RpoS-regulated gene belonging to the KGG protein superfamily. We further assessed its role in pathogenic stress responses and virulence. When SEN1538 was deleted (Δ1538), the pathogen showed reduced survival during antimicrobial peptide introduction and heat stress at 55°C compared to WT. The mutant displayed 70% reduced invasion in the HCT116 colon epithelial cell line, 5-fold attenuated phagocytic survival in RAW264.7 cells, and downregulation of several SPI-1 and SPI-2 genes encoding the three secretion system apparatus and effector proteins. Δ1538 also showed decreased virulence compared to WT, demonstrated by its reduced bacterial counts in the feces, mLN, spleen, and cecum of C57BL/6 mice. Comparative transcriptomic analysis of Δ1538 against WT revealed 111 differentially regulated genes, 103 of which were downregulated (fold change ≤ -1.5, P < 0.05). The majority of these genes were in clusters for metabolism, transporters, and pathogenesis, driving pathogenic stress responses and virulence. SEN1538 is, therefore, an important virulence determinant contributing to the resilience of S. Enteritidis to stress factors during infection.
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Affiliation(s)
- Aryashree Arunima
- School of Biotechnology, Kalinga Institute of Industrial Technology, Bhubaneswar, India
| | - Sunil Kumar Swain
- School of Biotechnology, Kalinga Institute of Industrial Technology, Bhubaneswar, India
| | - Shilpa Ray
- School of Biotechnology, Kalinga Institute of Industrial Technology, Bhubaneswar, India
| | | | - Mrutyunjay Suar
- School of Biotechnology, Kalinga Institute of Industrial Technology, Bhubaneswar, India
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14
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Lasso Peptide Microcin J25 Effectively Enhances Gut Barrier Function and Modulates Inflammatory Response in an Enterotoxigenic Escherichia coli-Challenged Mouse Model. Int J Mol Sci 2020; 21:ijms21186500. [PMID: 32899529 PMCID: PMC7555725 DOI: 10.3390/ijms21186500] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 08/26/2020] [Accepted: 08/28/2020] [Indexed: 02/07/2023] Open
Abstract
Bacterial resistance leads to severe public health and safety issues worldwide. Alternatives to antibiotics are currently needed. A promising lasso peptide, microcin J25 (MccJ25), is considered to be the best potential substitute for antibiotics to treat pathogen infection, including enterotoxigenic Escherichia coli (ETEC). This study evaluated the efficacy of MccJ25 in the prevention of ETEC infection. Forty-five female BALB/c mice of clean grade (aged seven weeks, approximately 16.15 g) were randomly divided into three experimental groups as follows: (i) control group (uninfected); (ii) ETEC infection group; (iii) MccJ25 + ETEC group. Fifteen mice per group in five cages, three mice/cage. MccJ25 conferred effective protection against ETEC-induced body weight loss, decrease in rectal temperature and increase in diarrhea scores in mice. Moreover, in ETEC-challenged mice model, MccJ25 significantly improved intestinal morphology, decreased intestinal histopathological scores and attenuated intestinal inflammation by decreasing proinflammatory cytokines and intestinal permeability, including reducing serum diamine oxidase and D-lactate levels. MccJ25 enhanced epithelial barrier function by increasing occludin expression in the colon and claudin-1 expression in the jejunum, ultimately improving intestinal health of host. MccJ25 was further found to alleviate gut inflammatory responses by decreasing inflammatory cytokine production and expression via the activation of the mitogen-activated protein kinase and nuclear factor κB signaling pathways. Taken together, the results indicated that MccJ25 protects against ETEC-induced intestinal injury and intestinal inflammatory responses, suggesting the potential application of MccJ25 as an excellent antimicrobial or anti-inflammation agent against pathogen infections.
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15
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Blyth GAD, Connors L, Fodor C, Cobo ER. The Network of Colonic Host Defense Peptides as an Innate Immune Defense Against Enteropathogenic Bacteria. Front Immunol 2020; 11:965. [PMID: 32508838 PMCID: PMC7251035 DOI: 10.3389/fimmu.2020.00965] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Accepted: 04/24/2020] [Indexed: 12/11/2022] Open
Abstract
Host defense peptides, abundantly secreted by colonic epithelial cells and leukocytes, are proposed to be critical components of an innate immune response in the colon against enteropathogenic bacteria, including Shigella spp., Salmonella spp., Clostridium difficile, and attaching and effacing Escherichia coli and Citrobacter rodentium. These short cationic peptides are bactericidal against both Gram-positive and -negative enteric pathogens, but may also exert killing effects on intestinal luminal microbiota. Simultaneously, these peptides modulate numerous cellular responses crucial for gut defenses, including leukocyte chemotaxis and migration, wound healing, cytokine production, cell proliferation, and pathogen sensing. This review discusses recent advances in our understanding of expression, mechanisms of action and microbicidal and immunomodulatory functions of major colonic host defense peptides, namely cathelicidins, β-defensins, and members of the Regenerating islet-derived protein III (RegIII) and Resistin-like molecule (RELM) families. In a theoretical framework where these peptides work synergistically, aspects of pathogenesis of infectious colitis reviewed herein uncover roles of host defense peptides aimed to promote epithelial defenses and prevent pathogen colonization, mediated through a combination of direct antimicrobial function and fine-tuning of host immune response and inflammation. This interactive host defense peptide network may decode how the intestinal immune system functions to quickly clear infections, restore homeostasis and avoid damaging inflammation associated with pathogen persistence during infectious colitis. This information is of interest in development of host defense peptides (either alone or in combination with reduced doses of antibiotics) as antimicrobial and immunomodulatory therapeutics for controlling infectious colitis.
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Affiliation(s)
- Graham A D Blyth
- Department of Microbiology, Immunology and Infectious Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Liam Connors
- Bachelor of Health Sciences, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Cristina Fodor
- Department of Microbiology, Immunology and Infectious Diseases, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Eduardo R Cobo
- Department of Production Animal Health, Faculty of Veterinary Medicine, University of Calgary, Calgary, AB, Canada
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16
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Antibacterial and antibiofilm activities of diphyllin against fish pathogens. Microb Pathog 2020; 145:104232. [PMID: 32353578 DOI: 10.1016/j.micpath.2020.104232] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 03/02/2020] [Accepted: 04/23/2020] [Indexed: 11/24/2022]
Abstract
Annihilation of biofilm forming bacterial pathogens is a challenging aspect in seafood and aquaculture industries. Microbes growing as biofilms cause deleterious effects on food products leading to food spoilage or loss of shelf life. As a measure to fight biofilms, agents that prevent/disrupt biofilms are recurrently screened. The study exemplifies the bactericidal and biofilm disruption potentials of a plant derived compound, diphyllin, against fish pathogens that colonizes Oreochromis mossambicus and Oreochromis niloticus. Precisely, diphyllin disrupted Salmonella typhi biofilms by triggering reactive oxidative species (ROS). Diphyllin-induced ROS had satisfactory correlation with S. typhi cell membrane damage and intracellular DNA degradation profiles providing a putative mechanistic model. In conclusion, the study identifies diphyllin as a therapeutic and dispersal agent aimed at biofilms formed by food-borne pathogens that persistently plague food processing and aquaculture settings.
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17
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Hitchhiking with Nature: Snake Venom Peptides to Fight Cancer and Superbugs. Toxins (Basel) 2020; 12:toxins12040255. [PMID: 32326531 PMCID: PMC7232197 DOI: 10.3390/toxins12040255] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 03/25/2020] [Accepted: 04/09/2020] [Indexed: 12/24/2022] Open
Abstract
Abstract For decades, natural products in general and snake venoms (SV) in particular have been a rich source of bioactive compounds for drug discovery, and they remain a promising substrate for therapeutic development. Currently, a handful of SV-based drugs for diagnosis and treatment of various cardiovascular disorders and blood abnormalities are on the market. Likewise, far more SV compounds and their mimetics are under investigation today for diverse therapeutic applications, including antibiotic-resistant bacteria and cancer. In this review, we analyze the state of the art regarding SV-derived compounds with therapeutic potential, focusing on the development of antimicrobial and anticancer drugs. Specifically, information about SV peptides experimentally validated or predicted to act as antimicrobial and anticancer peptides (AMPs and ACPs, respectively) has been collected and analyzed. Their principal activities both in vitro and in vivo, structures, mechanisms of action, and attempts at sequence optimization are discussed in order to highlight their potential as drug leads. Key Contribution This review describes the state of the art in snake venom-derived peptides and their therapeutic applications. This work reinforces the potential of snake venom components as therapeutic agents, particularly in the quest for new antimicrobial and anticancer drugs.
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18
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Munusamy S, Conde R, Bertrand B, Munoz-Garay C. Biophysical approaches for exploring lipopeptide-lipid interactions. Biochimie 2020; 170:173-202. [PMID: 31978418 PMCID: PMC7116911 DOI: 10.1016/j.biochi.2020.01.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Accepted: 01/19/2020] [Indexed: 02/07/2023]
Abstract
In recent years, lipopeptides (LPs) have attracted a lot of attention in the pharmaceutical industry due to their broad-spectrum of antimicrobial activity against a variety of pathogens and their unique mode of action. This class of compounds has enormous potential for application as an alternative to conventional antibiotics and for pest control. Understanding how LPs work from a structural and biophysical standpoint through investigating their interaction with cell membranes is crucial for the rational design of these biomolecules. Various analytical techniques have been developed for studying intramolecular interactions with high resolution. However, these tools have been barely exploited in lipopeptide-lipid interactions studies. These biophysical approaches would give precise insight on these interactions. Here, we reviewed these state-of-the-art analytical techniques. Knowledge at this level is indispensable for understanding LPs activity and particularly their potential specificity, which is relevant information for safe application. Additionally, the principle of each analytical technique is presented and the information acquired is discussed. The key challenges, such as the selection of the membrane model are also been briefly reviewed.
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Affiliation(s)
- Sathishkumar Munusamy
- Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Av. Universidad 2001, Col. Chamilpa, 62210, Cuernavaca, Mexico
| | - Renaud Conde
- Centro de Investigación Sobre Enfermedades Infecciosas, Instituto Nacional de Salud Pública, Cuernavaca, Morelos, Mexico
| | - Brandt Bertrand
- Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Av. Universidad 2001, Col. Chamilpa, 62210, Cuernavaca, Mexico
| | - Carlos Munoz-Garay
- Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Av. Universidad 2001, Col. Chamilpa, 62210, Cuernavaca, Mexico.
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19
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Yu H, Wang Y, Zeng X, Cai S, Wang G, Liu L, Huang S, Li N, Liu H, Ding X, Song Q, Qiao S. Therapeutic administration of the recombinant antimicrobial peptide microcin J25 effectively enhances host defenses against gut inflammation and epithelial barrier injury induced by enterotoxigenic
Escherichia coli
infection. FASEB J 2019; 34:1018-1037. [DOI: 10.1096/fj.201901717r] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 10/29/2019] [Accepted: 10/30/2019] [Indexed: 12/14/2022]
Affiliation(s)
- Haitao Yu
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture and Rural Affairs Feed Industry CenterChina Agricultural University Beijing P.R. China
- Beijing Key Laboratory of Biofeed Additives Beijing P.R. China
| | - Yuming Wang
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture and Rural Affairs Feed Industry CenterChina Agricultural University Beijing P.R. China
- Beijing Key Laboratory of Biofeed Additives Beijing P.R. China
| | - Xiangfang Zeng
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture and Rural Affairs Feed Industry CenterChina Agricultural University Beijing P.R. China
- Beijing Key Laboratory of Biofeed Additives Beijing P.R. China
| | - Shuang Cai
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture and Rural Affairs Feed Industry CenterChina Agricultural University Beijing P.R. China
- Beijing Key Laboratory of Biofeed Additives Beijing P.R. China
| | - Gang Wang
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture and Rural Affairs Feed Industry CenterChina Agricultural University Beijing P.R. China
- Beijing Key Laboratory of Biofeed Additives Beijing P.R. China
| | - Lu Liu
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture and Rural Affairs Feed Industry CenterChina Agricultural University Beijing P.R. China
- Beijing Key Laboratory of Biofeed Additives Beijing P.R. China
| | - Shuo Huang
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture and Rural Affairs Feed Industry CenterChina Agricultural University Beijing P.R. China
- Beijing Key Laboratory of Biofeed Additives Beijing P.R. China
| | - Ning Li
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture and Rural Affairs Feed Industry CenterChina Agricultural University Beijing P.R. China
- Beijing Key Laboratory of Biofeed Additives Beijing P.R. China
| | - Hongbin Liu
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture and Rural Affairs Feed Industry CenterChina Agricultural University Beijing P.R. China
- Beijing Key Laboratory of Biofeed Additives Beijing P.R. China
| | - Xiuliang Ding
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture and Rural Affairs Feed Industry CenterChina Agricultural University Beijing P.R. China
- Beijing Key Laboratory of Biofeed Additives Beijing P.R. China
| | - Qinglong Song
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture and Rural Affairs Feed Industry CenterChina Agricultural University Beijing P.R. China
- Beijing Key Laboratory of Biofeed Additives Beijing P.R. China
| | - Shiyan Qiao
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture and Rural Affairs Feed Industry CenterChina Agricultural University Beijing P.R. China
- Beijing Key Laboratory of Biofeed Additives Beijing P.R. China
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20
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Liu H, Cao X, Wang H, Zhao J, Wang X, Wang Y. Antimicrobial peptide KR-32 alleviates Escherichia coli K88-induced fatty acid malabsorption by improving expression of fatty acid transporter protein 4 (FATP4)1. J Anim Sci 2019; 97:2342-2356. [PMID: 30958881 DOI: 10.1093/jas/skz110] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Accepted: 04/04/2019] [Indexed: 01/02/2023] Open
Abstract
Bacterial infection causes nutrient malabsorption in small intestine. KR-32, a kind of synthetic antimicrobial peptide, has the bacteriostatic effect. In the present study, 2 experiments were designed to analyze the effects of KR-32 on fat absorption of piglets with or without Escherichia coli infection. In Exp. 1, 12 weaning piglets (21 d old) were allocated to 2 groups: piglets with an intraperitoneal (i.p.) injection of antimicrobial peptide KR-32 (APK) and piglets with an i.p. injection of an equivalent volume (1 mL) of phosphate-buffered saline (PBS) (CON-1). Results showed that after 7 d of growth, KR-32 did not significantly change growth performance and apparent total tract digestibility (ATTD) of feed nutrients of normal pigs. To confirm whether KR-32 affects those of enterotoxigenic Escherichia coli (ETEC) K88-challenged pigs, we performed Exp. 2, in which 18 piglets (28 d old) were divided into the following 3 groups: 1) piglets orally challenged with 1 × 1010 cfu ETEC K88 on day 1 followed by an i.p. injection of 0.6 mg/kg KR-32 (K88 + APK); 2) piglets orally challenged with 1 × 1010 cfu ETEC K88 on day 1 followed by an i.p. injection of an equivalent volume (1 mL) of PBS (K88); and 3) piglets with an oral administration of fresh Luria-Bertani broth (50 mL) followed by an i.p. injection of an equivalent volume of PBS (CON-2). Results showed that ETEC K88 challenge led to poor ADFI, ADG, and G:F in piglets; decreased ATTD of feed nutrients, especially CP and ether extract (EE); and intestinal morphology disorder. After i.p. injection of KR-32, ADG and ATTD of CP and EE were greatly increased, G:F was significantly reduced (P < 0.05), and, especially, ATTD of EE returned to a normal level compared with group CON-2. Fatty acid absorption also highly increased after KR-32 injection. Then we focused on fat digestion and fatty acid uptake. The pH in the intestine and pancreas lipase showed no difference among the 3 treatment groups, whereas fatty acid transporter protein 4 (FATP4) expression was remarkably improved (P < 0.05) and the epithelial barrier was recovered after i.p. injection of KR-32. In conclusion, KR-32, given to ETEC K88-challenged piglets, improved growth performance, ATTD of EE, fatty acid absorption, and intestinal morphology, which indicated that KR-32 was likely to improve the expression of FATP4 and by repairing the epithelial barrier, thereby alleviating fatty acid malabsorption.
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Affiliation(s)
- Heyuan Liu
- National Engineering Laboratory of Biological Feed Safety and Pollution Prevention and Control, Key Laboratory of Animal Nutrition and Feed, Ministry of Agriculture, Key Laboratory of Animal Nutrition and Feed Science of Zhejiang Province, Zhejiang University, Hangzhou, Zhejiang, P.R. China
| | - Xiaoxuan Cao
- National Engineering Laboratory of Biological Feed Safety and Pollution Prevention and Control, Key Laboratory of Animal Nutrition and Feed, Ministry of Agriculture, Key Laboratory of Animal Nutrition and Feed Science of Zhejiang Province, Zhejiang University, Hangzhou, Zhejiang, P.R. China
| | - Hong Wang
- National Engineering Laboratory of Biological Feed Safety and Pollution Prevention and Control, Key Laboratory of Animal Nutrition and Feed, Ministry of Agriculture, Key Laboratory of Animal Nutrition and Feed Science of Zhejiang Province, Zhejiang University, Hangzhou, Zhejiang, P.R. China
| | - Jian Zhao
- National Engineering Laboratory of Biological Feed Safety and Pollution Prevention and Control, Key Laboratory of Animal Nutrition and Feed, Ministry of Agriculture, Key Laboratory of Animal Nutrition and Feed Science of Zhejiang Province, Zhejiang University, Hangzhou, Zhejiang, P.R. China
| | - Xinxia Wang
- National Engineering Laboratory of Biological Feed Safety and Pollution Prevention and Control, Key Laboratory of Animal Nutrition and Feed, Ministry of Agriculture, Key Laboratory of Animal Nutrition and Feed Science of Zhejiang Province, Zhejiang University, Hangzhou, Zhejiang, P.R. China
| | - Yizhen Wang
- National Engineering Laboratory of Biological Feed Safety and Pollution Prevention and Control, Key Laboratory of Animal Nutrition and Feed, Ministry of Agriculture, Key Laboratory of Animal Nutrition and Feed Science of Zhejiang Province, Zhejiang University, Hangzhou, Zhejiang, P.R. China
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21
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Yu H, Li N, Zeng X, Liu L, Wang Y, Wang G, Cai S, Huang S, Ding X, Song Q, Qiao S. A Comprehensive Antimicrobial Activity Evaluation of the Recombinant Microcin J25 Against the Foodborne Pathogens Salmonella and E. coli O157:H7 by Using a Matrix of Conditions. Front Microbiol 2019; 10:1954. [PMID: 31507565 PMCID: PMC6718478 DOI: 10.3389/fmicb.2019.01954] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2019] [Accepted: 08/08/2019] [Indexed: 12/31/2022] Open
Abstract
Natural microcin J25 (MccJ25) represent promising alternatives to traditional antibiotics for the treatment of drug-resistant infections. However, little is known about the antibacterial activity of recombinant MccJ25 against foodborne pathogens. Here, the activity of recombinant MccJ25 was examined using a matrix of conditions in order to assess the efficacy of recombinant MccJ25 as a mitigation against foodborne pathogens, such as Salmonella species and Escherichia coli (E. coli) O157:H7. Results showed that recombinant MccJ25 displayed excellent antimicrobial activity against these foodborne pathogens, including clinical isolates of Salmonella and E. coli, as well as clinical antibiotic-resistant Salmonella and E. coli isolates with different minimal inhibitory concentrations. In addition, antimicrobial activity curves and Live/Dead assay evidenced that recombinant MccJ25 harbors strong bactericidal activity against Salmonella and E. coli O157:H7. Notably, recombinant MccJ25 also had great potency and induced fast mortality against different growth phase of Salmonella and E. coli. The stability analysis results showed that the activity of recombinant MccJ25 was not influenced by temperatures as high as 121°C. Varying the pH from 2.0 to 9.0 did not appear to affect the activity of recombinant MccJ25. Under the challenge of several proteases, simulated gastrointestinal fluids and serum, recombinant MccJ25 still maintained exceptionally strong antimicrobial activity. Significant reductions in Salmonella Pullorum levels were also achieved in food biological environments, such as milk, egg and meat. Moreover, we demonstrated that recombinant MccJ25 appeared to act by inducing membrane breaks, thinning, and disintegration in the Salmonella Pullorum cytoplasmic membrane. Taken together, these results indicated that recombinant MccJ25 could be an effective alternative for mitigating and prevention of Salmonella and E. coli infection in food, animal and agriculture applications.
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Affiliation(s)
- Haitao Yu
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China.,Ministry of Agriculture and Rural Affairs Feed Industry Centre, China Agricultural University, Beijing, China.,Beijing Key Laboratory of Bio-Feed Additives, Beijing, China
| | - Ning Li
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China.,Ministry of Agriculture and Rural Affairs Feed Industry Centre, China Agricultural University, Beijing, China.,Beijing Key Laboratory of Bio-Feed Additives, Beijing, China
| | - Xiangfang Zeng
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China.,Ministry of Agriculture and Rural Affairs Feed Industry Centre, China Agricultural University, Beijing, China.,Beijing Key Laboratory of Bio-Feed Additives, Beijing, China
| | - Lu Liu
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China.,Ministry of Agriculture and Rural Affairs Feed Industry Centre, China Agricultural University, Beijing, China.,Beijing Key Laboratory of Bio-Feed Additives, Beijing, China
| | - Yuming Wang
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China.,Ministry of Agriculture and Rural Affairs Feed Industry Centre, China Agricultural University, Beijing, China.,Beijing Key Laboratory of Bio-Feed Additives, Beijing, China
| | - Gang Wang
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China.,Ministry of Agriculture and Rural Affairs Feed Industry Centre, China Agricultural University, Beijing, China.,Beijing Key Laboratory of Bio-Feed Additives, Beijing, China
| | - Shuang Cai
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China.,Ministry of Agriculture and Rural Affairs Feed Industry Centre, China Agricultural University, Beijing, China.,Beijing Key Laboratory of Bio-Feed Additives, Beijing, China
| | - Shuo Huang
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China.,Ministry of Agriculture and Rural Affairs Feed Industry Centre, China Agricultural University, Beijing, China.,Beijing Key Laboratory of Bio-Feed Additives, Beijing, China
| | - Xiuliang Ding
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China.,Ministry of Agriculture and Rural Affairs Feed Industry Centre, China Agricultural University, Beijing, China.,Beijing Key Laboratory of Bio-Feed Additives, Beijing, China
| | - Qinglong Song
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China.,Ministry of Agriculture and Rural Affairs Feed Industry Centre, China Agricultural University, Beijing, China.,Beijing Key Laboratory of Bio-Feed Additives, Beijing, China
| | - Shiyan Qiao
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China.,Ministry of Agriculture and Rural Affairs Feed Industry Centre, China Agricultural University, Beijing, China.,Beijing Key Laboratory of Bio-Feed Additives, Beijing, China
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22
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Pérez‐Peinado C, Dias SA, Mendonça DA, Castanho MA, Veiga AS, Andreu D. Structural determinants conferring unusual long life in human serum to rattlesnake‐derived antimicrobial peptide Ctn[15‐34]. J Pept Sci 2019; 25:e3195. [DOI: 10.1002/psc.3195] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 05/07/2019] [Accepted: 05/13/2019] [Indexed: 12/31/2022]
Affiliation(s)
- Clara Pérez‐Peinado
- Department of Experimental and Health ScienceUniversitat Pompeu Fabra, Barcelona Biomedical Research Park Barcelona 08003 Spain
| | - Susana A. Dias
- Instituto de Medicina Molecular, Faculdade de MedicinaUniversidade de Lisboa Lisbon 1649‐028 Portugal
| | - Diogo A. Mendonça
- Instituto de Medicina Molecular, Faculdade de MedicinaUniversidade de Lisboa Lisbon 1649‐028 Portugal
| | - Miguel A.R.B. Castanho
- Instituto de Medicina Molecular, Faculdade de MedicinaUniversidade de Lisboa Lisbon 1649‐028 Portugal
| | - Ana S. Veiga
- Instituto de Medicina Molecular, Faculdade de MedicinaUniversidade de Lisboa Lisbon 1649‐028 Portugal
| | - David Andreu
- Department of Experimental and Health ScienceUniversitat Pompeu Fabra, Barcelona Biomedical Research Park Barcelona 08003 Spain
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23
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Rodríguez-Carlos A, Martinez-Gutierrez F, Torres-Juarez F, Rivas-Santiago B. Antimicrobial Peptides-based Nanostructured Delivery Systems: An Approach for Leishmaniasis Treatment. Curr Pharm Des 2019; 25:1593-1603. [PMID: 31264542 DOI: 10.2174/1381612825666190628152842] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Accepted: 06/19/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Leishmaniasis is a major health problem mainly in tropical and subtropical areas worldwide, although in the last decades it has been treated with the use of conventional drugs such as amphotericin, the emergence of multidrug-resistant strains has raised a warning signal to the public health systems thus a new call for the creation of new leishmanicidal drugs is needed. METHODS The goal of this review was to explore the potential use of antimicrobial peptides-based nanostructured delivery systems as an approach for leishmaniasis treatment. RESULTS Within these new potential drugs, human host defense peptides (HDP) can be included given their remarkable antimicrobial activity and their outstanding immunomodulatory functions for the therapy of leishmaniasis. CONCLUSION Though several approaches have been done using these peptides, new ways for delivering HDPs need to be analyzed, such is the case for nanotechnology.
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Affiliation(s)
- Adrian Rodríguez-Carlos
- Medical Research Unit- Zacatecas-IMSS, Zacatecas, Mexico.,División de Medicina Molecular y Traslacional, Centro de Investigación en Ciencias de la Salud y Biomedicina, Universidad Autónoma de San Luis Potosí. Mexico
| | - Fidel Martinez-Gutierrez
- Microbiology Laboratory, Facultad de Ciencias Quimicas, Universidad Autonoma de San Luis Potosi, Alvaro Obregon 64, Centro 78300, San Luis, S.L.P, Mexico
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24
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Zhang L, Gui S, Liang Z, Liu A, Chen Z, Tang Y, Xiao M, Chu F, Liu W, Jin X, Zhu J, Lu X. Musca domestica Cecropin (Mdc) Alleviates Salmonella typhimurium-Induced Colonic Mucosal Barrier Impairment: Associating With Inflammatory and Oxidative Stress Response, Tight Junction as Well as Intestinal Flora. Front Microbiol 2019; 10:522. [PMID: 30930887 PMCID: PMC6428779 DOI: 10.3389/fmicb.2019.00522] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2018] [Accepted: 02/28/2019] [Indexed: 12/18/2022] Open
Abstract
Salmonella typhimurium, a Gram-negative food-borne pathogen, induces impairment in intestinal mucosal barrier function frequently. The injury is related to many factors such as inflammation, oxidative stress, tight junctions and flora changes in the host intestine. Musca domestica cecropin (Mdc), a novel antimicrobial peptide containing 40 amino acids, has potential antibacterial, anti-inflammatory, and immunological functions. It remains unclear exactly whether and how Mdc reduces colonic mucosal barrier damage caused by S. typhimurium. Twenty four 6-week-old male mice were divided into four groups: normal group, control group (S. typhimurium-challenged), Mdc group, and ceftriaxone sodium group (Cs group). HE staining and transmission electron microscopy (TEM) were performed to observe the morphology of the colon tissues. Bacterial load of S. typhimurium in colon, liver and spleen were determined by bacterial plate counting. Inflammatory factors were detected by enzyme linked immunosorbent assay (ELISA). Oxidative stress levels in the colon tissues were also analyzed. Immunofluorescence analysis, RT-PCR, and Western blot were carried out to examine the levels of tight junction and inflammatory proteins. The intestinal microbiota composition was assessed via 16s rDNA sequencing. We successfully built and evaluated an S. typhimurium-infection model in mice. Morphology and microcosmic change of the colon tissues confirmed the protective qualities of Mdc. Mdc could inhibit colonic inflammation and oxidative stress. Tight junctions were improved significantly after Mdc administration. Interestingly, Mdc ameliorated intestinal flora imbalance, which may be related to the improvement of tight junction. Our results shed a new light on protective effects and mechanism of the antimicrobial peptide Mdc on colonic mucosal barrier damage caused by S. typhimurium infection. Mdc is expected to be an important candidate for S. typhimurium infection treatment.
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Affiliation(s)
- Lun Zhang
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, China
| | - Shuiqing Gui
- Intensive Care Unit, Shenzhen Second People's Hospital, The First Affiliated Hospital of Shenzhen University, Shenzhen, China
| | - Zhaobo Liang
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, China
| | - Along Liu
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, China
| | - Zhaoxia Chen
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, China
| | - Yanan Tang
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, China
| | - Mingzhu Xiao
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, China
| | - Fujiang Chu
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, China
| | - Wenbin Liu
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, China
| | - Xiaobao Jin
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, China
| | - Jiayong Zhu
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, China
| | - Xuemei Lu
- Guangdong Provincial Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou, China
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25
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Shu G, Chen Y, Liu T, Ren S, Kong Y. Antimicrobial Peptide Cathelicidin-BF Inhibits Platelet Aggregation by Blocking Protease-Activated Receptor 4. Int J Pept Res Ther 2019. [DOI: 10.1007/s10989-018-9677-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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26
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Human cathelicidin improves colonic epithelial defenses against Salmonella typhimurium by modulating bacterial invasion, TLR4 and pro-inflammatory cytokines. Cell Tissue Res 2019; 376:433-442. [PMID: 30788579 DOI: 10.1007/s00441-018-02984-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2018] [Accepted: 12/06/2018] [Indexed: 01/08/2023]
Abstract
The intestinal mucosa contributes to frontline gut defenses by forming a barrier (physical and biochemical) and preventing the entry of pathogenic microbes. One innate role of the human colonic epithelium is to secrete cathelicidin, a peptide with broad antimicrobial and immunomodulatory functions. In this study, the effect of cathelicidin in the maintenance of epithelial integrity, Toll-like receptor recognition, bacterial invasion and initiation of inflammatory response against Salmonella typhimurium is investigated in cultured human colonic epithelium. We found exogenous human cathelicidin restores the epithelial integrity in S. typhimurium-infected colonic epithelial (T84) cells by mostly post-translational effects associated with reorganization of zonula occludens (ZO)-1 tight junction proteins. Endogenous cathelicidin prevents S. typhimurium internalization as shown in colonic epithelial cells genetically deficient in the only human cathelicidin, LL-37 (shLL-37). Moreover, supplementation of shLL-37 cells with synthetic LL-37 reduces the grade of S. typhimurium internalization in a dose-dependent manner. Mechanistically, shLL-37 cells have lower gene expression of TLR4 and pro-inflammatory cytokine IL-1β in response to S. typhimurium. Thus, human cathelicidin aids in the early colonic epithelial defenses against enteric S. typhimurium by preventing bacterial invasion and maintaining epithelial barrier integrity, likely to occur due to the production of sensing TLR4 and pro-inflammatory cytokines.
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27
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Yu H, Shang L, Zeng X, Li N, Liu H, Cai S, Huang S, Wang G, Wang Y, Song Q, Qiao S. Risks Related to High-Dosage Recombinant Antimicrobial Peptide Microcin J25 in Mice Model: Intestinal Microbiota, Intestinal Barrier Function, and Immune Regulation. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2018; 66:11301-11310. [PMID: 30298738 DOI: 10.1021/acs.jafc.8b03405] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Antimicrobial peptide (AMP) can be a promising alternative in various domains. However, further risk information is required. In this study, mice were orally administrated different dosages of recombinant AMP microcin J25 (4.55, 9.1, and 18.2 mg/kg; MccJ25) for 1 week, and the toxicity risk impacts were examined. We evidenced that middle-dosage administration mice had a lower inflammation, better body weight, and ameliorated mucosal morphology, accompanied by reduced intestinal permeability and tighter intestinal barrier. Fecal microbiota composition analysis in middle- or low-dosage mice revealed the Bifidobacterium count was increased and the coliform bacteria count was decreased, and increased in short-chain fatty acid levels. Unexpectedly, there was a risk that high-dosage mice increased intestinal permeability and imbalance of intestinal bacteria. Taken together, these data indicated a safe threshold for usage of MccJ25 in clinical practice. Such studies can effectively enhance the safety of various aspects such as food preservative and drug.
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Affiliation(s)
- Haitao Yu
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Centre , China Agricultural University , Beijing 100193 , People's Republic of China
- Beijing Bio-feed Additives Key Laboratory , Beijing 100193 , People's Republic of China
| | - Lijun Shang
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Centre , China Agricultural University , Beijing 100193 , People's Republic of China
- Beijing Bio-feed Additives Key Laboratory , Beijing 100193 , People's Republic of China
| | - Xiangfang Zeng
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Centre , China Agricultural University , Beijing 100193 , People's Republic of China
- Beijing Bio-feed Additives Key Laboratory , Beijing 100193 , People's Republic of China
| | - Ning Li
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Centre , China Agricultural University , Beijing 100193 , People's Republic of China
- Beijing Bio-feed Additives Key Laboratory , Beijing 100193 , People's Republic of China
| | - Hongbin Liu
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Centre , China Agricultural University , Beijing 100193 , People's Republic of China
- Beijing Bio-feed Additives Key Laboratory , Beijing 100193 , People's Republic of China
| | - Shuang Cai
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Centre , China Agricultural University , Beijing 100193 , People's Republic of China
- Beijing Bio-feed Additives Key Laboratory , Beijing 100193 , People's Republic of China
| | - Shuo Huang
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Centre , China Agricultural University , Beijing 100193 , People's Republic of China
- Beijing Bio-feed Additives Key Laboratory , Beijing 100193 , People's Republic of China
| | - Gang Wang
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Centre , China Agricultural University , Beijing 100193 , People's Republic of China
- Beijing Bio-feed Additives Key Laboratory , Beijing 100193 , People's Republic of China
| | - Yuming Wang
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Centre , China Agricultural University , Beijing 100193 , People's Republic of China
- Beijing Bio-feed Additives Key Laboratory , Beijing 100193 , People's Republic of China
| | - Qinglong Song
- Beijing Bio-feed Additives Key Laboratory , Beijing 100193 , People's Republic of China
- Beijing Longkefangzhou Bio-Engineering Technology Co., Ltd. , Beijing 100193 , People's Republic of China
| | - Shiyan Qiao
- State Key Laboratory of Animal Nutrition, Ministry of Agriculture Feed Industry Centre , China Agricultural University , Beijing 100193 , People's Republic of China
- Beijing Bio-feed Additives Key Laboratory , Beijing 100193 , People's Republic of China
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28
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Liu C, Qi J, Shan B, Gao R, Gao F, Xie H, Yuan M, Liu H, Jin S, Wu F, Ma Y. Pretreatment with cathelicidin-BF ameliorates Pseudomonas aeruginosa pneumonia in mice by enhancing NETosis and the autophagy of recruited neutrophils and macrophages. Int Immunopharmacol 2018; 65:382-391. [PMID: 30380513 DOI: 10.1016/j.intimp.2018.10.030] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 10/19/2018] [Accepted: 10/19/2018] [Indexed: 12/23/2022]
Abstract
Although the antimicrobial peptide cathelicidin-BF shows minimal cytotoxicity in mammalian cells and has excellent direct killing effects on multidrug-resistant clinical pathogens such as Pseudomonas aeruginosa, its clinical application is precluded by its high sensitivity to serum proteases. Here, we demonstrate that intravenous administration of cathelicidin-BF after P. aeruginosa infection did not increase the survival rate of mice with acute pneumonia but that pretreatment with cathelicidin-BF ameliorated pneumonia by effectively activating innate immunity. Enhanced neutrophil extracellular trap (NET) activation and release (NETosis) are key processes for capturing and killing bacteria, concomitantly enhanced macrophage clearance activity, including phagocytosis and autophagy, may eliminate NETs early enough to prevent severe tissue damage. Our study not only suggests a possible approach for applying cathelicidin-BF in vivo but also provides a possible defense strategy against multidrug-resistant pathogens, i.e., efficiently activation of innate immunity.
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Affiliation(s)
- Cunbao Liu
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, China
| | - Jialong Qi
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, China
| | - Bin Shan
- Department of Clinical Lab, The First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Ruiyu Gao
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, China
| | - Fulan Gao
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, China
| | - Hanghang Xie
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, China
| | - Mingcui Yuan
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, China
| | - Hongxian Liu
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, China
| | - Shumei Jin
- Yunnan Institute of Materia Medica, Kunming, China
| | - Fei Wu
- Department of Occupational Disease, The Third People's Hospital of Yunnan Province, Kunming, China
| | - Yanbing Ma
- Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, China.
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29
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Xu X, Gong L, Wang B, Wu Y, Wang Y, Mei X, Xu H, Tang L, Liu R, Zeng Z, Mao Y, Li W. Glycyrrhizin Attenuates Salmonella enterica Serovar Typhimurium Infection: New Insights Into Its Protective Mechanism. Front Immunol 2018; 9:2321. [PMID: 30459751 PMCID: PMC6232675 DOI: 10.3389/fimmu.2018.02321] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 09/18/2018] [Indexed: 12/23/2022] Open
Abstract
Glycyrrhizin (GL), a triterpenoid glycoside, serves important functions in various biological activities, including antiviral and antitumor immune responses. However, the anti-inflammatory effects of GL on Salmonella enterica serovar Typhimurium (ST)-induced injury in mice and the mechanisms underlying the protection of GL are poorly understood. Here, we investigated the effects of GL on host immune responses against ST infection in mice. A phenotypic analysis using hematoxylin and eosin (H&E) staining and transmission electron microscopy showed that GL relieved ST-induced weight loss and intestinal mucosal injury. A colonization assay showed that GL significantly reduced ST colonization in the ileum and colon and translocation to the liver and spleen. An antibacterial activity assay and real-time PCR revealed that GL had no direct inhibitory impact on ST growth or virulence gene expression. ELISA showed that GL pretreatment significantly decreased proinflammatory cytokine (IFN-γ, TNF-α, IL-6) secretion and increased anti-inflammatory cytokine (IL-10) secretion in the ileum, colon and serum of ST-infected mice. Moreover, flora analysis showed that GL reduced Akkermansia, Sutterella, Prevotella and Coprococcus but enriched Parabacteroides and Anaerotruncus in the cecum of ST-infected mice. These results suggest that GL promotes the secretion of immune factors and modulates intestinal flora to prevent further ST infection. We also analyzed the effect of GL on immunocytes and found that GL promoted the phenotypic and functional maturation of murine bone marrow-derived dendritic cells (BMDCs). Flow cytometry and western blotting demonstrated that NF-κB, ERK, and p38 MAPK were required for GL-induced BMDC maturation. The above findings indicate that GL attenuates ST infection by modulating immune function and intestinal flora. This study enriches our current knowledge of GL-mediated immunological function and provides a new perspective on the prevention of Salmonella infection in animals and humans.
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Affiliation(s)
- Xiaogang Xu
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University, Hangzhou, China.,Zhejiang Hospital & Zhejiang Provincial Key Lab of Geriatrics, Hangzhou, China
| | - Li Gong
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Baikui Wang
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Yanping Wu
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Yang Wang
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Xiaoqiang Mei
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Han Xu
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Li Tang
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Rongrong Liu
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Zhonghua Zeng
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Yulong Mao
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Weifen Li
- Key Laboratory of Molecular Animal Nutrition of the Ministry of Education, Institute of Feed Science, College of Animal Sciences, Zhejiang University, Hangzhou, China
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30
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Chen Q, Dai W, Sun Y, Zhao F, Liu J, Liu H. Methionine Partially Replaced by Methionyl-Methionine Dipeptide Improves Reproductive Performance over Methionine Alone in Methionine-Deficient Mice. Nutrients 2018; 10:nu10091190. [PMID: 30200399 PMCID: PMC6165284 DOI: 10.3390/nu10091190] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Revised: 08/13/2018] [Accepted: 08/27/2018] [Indexed: 11/23/2022] Open
Abstract
Decreased protein breakdown in pregnant women results in lower concentration of methionine (Met) in plasma, causing pregnancy-related metabolic disturbance. Its dipeptide methionyl-methionine (Met-Met) may exert positive influence in fetal development. This study mainly investigated whether Met-Met can be used as part of free Met to promote reproductive outcomes in mice and the underlying mechanisms. Met-deficient pregnant mice were treated with Met alone or with Met-Met during pregnancy. Daily intraperitoneal injection of 35% dietary Met in pregnant mice was the best dose among the 15–45% doses. Embryo development and newborn birth weight were enhanced when 25% of the Met in the 35% Met group was replaced with Met-Met. Met-Met replacement had higher plasma insulin, glucose, and free amino acids (AA) concentrations. Besides, in the placenta, the AA transporter mRNA abundances and peptide transporters (PhT1 and PepT1) protein levels were higher in Met-Met treatment group. Moreover, Met-Met increased 4E-BP1, S6K1 and AKT/mTOR phosphorylation. These results suggest that Met-Met could be used as a partial source of Met to promote reproductive outcomes in Met-restricted pregnant mice, which might be mediated by promoting nutrient availability and activating AKT/mTOR-mediated signaling pathway.
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Affiliation(s)
- Qiong Chen
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China.
| | - Wenting Dai
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China.
| | - Yalu Sun
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China.
| | - Fengqi Zhao
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China.
- Department of Animal and Veterinary Sciences, University of Vermont, Burlington, VT 05405, USA.
| | - Jianxin Liu
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China.
| | - Hongyun Liu
- College of Animal Sciences, Zhejiang University, Hangzhou 310058, China.
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31
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Yu H, Ding X, Shang L, Zeng X, Liu H, Li N, Huang S, Wang Y, Wang G, Cai S, Chen M, Levesque CL, Johnston LJ, Qiao S. Protective Ability of Biogenic Antimicrobial Peptide Microcin J25 Against Enterotoxigenic Escherichia Coli-Induced Intestinal Epithelial Dysfunction and Inflammatory Responses IPEC-J2 Cells. Front Cell Infect Microbiol 2018; 8:242. [PMID: 30057893 PMCID: PMC6053529 DOI: 10.3389/fcimb.2018.00242] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2018] [Accepted: 06/22/2018] [Indexed: 12/28/2022] Open
Abstract
Poison of intestinal induce severe health problems in human infants and young animals due to contaminating foods and feedstuffs. With the emergence of public health concerns and high-speed diffuse of drug-opposition of bacteria, the adoption of antimicrobial peptides as potential candidates in treating pathogen infections raised up. Nature Microcin J25 (MccJ25), a class of lasso peptides separated from a fecal strain of E. coli, has been replied to display powerful antimicrobial behavior. Herein, the study was to assess the usefulness of biogenic MccJ25 in the prophylaxis of ETEC K88 infection in IPEC-J2 cells. In vitro antimicrobial activity against ETEC K88 and cytotoxicity of biogenic MccJ25 were determined first. To further understand how biogenic MccJ25 mediates its impact, ETEC K88 adhesion in cells, membrane permeability [as indicated by reduced release of lactate dehydrogenase (LDH)], transepithelial electrical resistance (TEER), barrier function, and proinflammatory cytokines levels were determined in IPEC-J2 cells after treatment with biogenic MccJ25 and challenge with ETEC K88. Biogenic MccJ25 had a minimum inhibitory concentration of 0.25 μg/mL against ETEC K88, decreased ETEC K88 adhesion in cells and did not cause cytotoxicity toward cells. Furthermore, biogenic MccJ25 protects against ETEC-induced barrier dysfunction by increasing the TEER, decreasing the LDH and promoting tight junction proteins (TJPs) by promoting the assembly of occludin and claudin-1 in the tight junction complex. Biogenic MccJ25 was further found to relieve inflammation responses through modulation of interleukine-6, IL-8 and tumor necrosis factor-α levels via inhibition of mitogen-activated protein kinase (MAPK) and nuclear factor κB activation. In summary, biogenic MccJ25 can protects against ETEC K88-induced intestinal damage and inflammatory response, recommend the hidden adoption of biogenic MccJ25 as a novel prophylactic agent to reduce pathogen infection in animals, food or humans.
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Affiliation(s)
- Haitao Yu
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China.,Beijing Key Laboratory of Bio-feed Additives, China Agricultural University, Beijing, China
| | - Xiuliang Ding
- National Feed Engineering Technology Research Center, Beijing, China
| | - Lijun Shang
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China.,Beijing Key Laboratory of Bio-feed Additives, China Agricultural University, Beijing, China
| | - Xiangfang Zeng
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China.,Beijing Key Laboratory of Bio-feed Additives, China Agricultural University, Beijing, China
| | - Hongbin Liu
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China.,Beijing Key Laboratory of Bio-feed Additives, China Agricultural University, Beijing, China
| | - Ning Li
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China.,Beijing Key Laboratory of Bio-feed Additives, China Agricultural University, Beijing, China
| | - Shuo Huang
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China.,Beijing Key Laboratory of Bio-feed Additives, China Agricultural University, Beijing, China
| | - Yuming Wang
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China.,Beijing Key Laboratory of Bio-feed Additives, China Agricultural University, Beijing, China
| | - Gang Wang
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China.,Beijing Key Laboratory of Bio-feed Additives, China Agricultural University, Beijing, China
| | - Shuang Cai
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China.,Beijing Key Laboratory of Bio-feed Additives, China Agricultural University, Beijing, China
| | - Meixia Chen
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China.,Beijing Key Laboratory of Bio-feed Additives, China Agricultural University, Beijing, China
| | - Crystal L Levesque
- Department of Animal Sciences, South Dakota State University, Brookings, SD, United States
| | - Lee J Johnston
- Swine Nutrition and Production, West Central Research and Outreach Center, University of Minnesota, Morris, MN, United States
| | - Shiyan Qiao
- State Key Laboratory of Animal Nutrition, China Agricultural University, Beijing, China.,Beijing Key Laboratory of Bio-feed Additives, China Agricultural University, Beijing, China
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32
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Anti-Salmonella Activity Modulation of Mastoparan V1-A Wasp Venom Toxin-Using Protease Inhibitors, and Its Efficient Production via an Escherichia coli Secretion System. Toxins (Basel) 2017; 9:toxins9100321. [PMID: 29027924 PMCID: PMC5666368 DOI: 10.3390/toxins9100321] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 10/10/2017] [Accepted: 10/11/2017] [Indexed: 12/27/2022] Open
Abstract
A previous study highlighted that mastoparan V1 (MP-V1), a mastoparan from the venom of the social wasp Vespula vulgaris, is a potent antimicrobial peptide against Salmonella infection, which causes enteric diseases. However, there exist some limits for its practical application due to the loss of its activity in an increased bacterial density and the difficulty of its efficient production. In this study, we first modulated successfully the antimicrobial activity of synthetic MP-V1 against an increased Salmonella population using protease inhibitors, and developed an Escherichia coli secretion system efficiently producing active MP-V1. The protease inhibitors used, except pepstatin A, significantly increased the antimicrobial activity of the synthetic MP-V1 at minimum inhibitory concentrations (determined against 10⁶ cfu/mL of population) against an increased population (10⁸ cfu/mL) of three different Salmonella serotypes, Gallinarum, Typhimurium and Enteritidis. Meanwhile, the E. coli strain harboring OmpA SS::MP-V1 was identified to successfully secrete active MP-V1 into cell-free supernatant, whose antimicrobial activity disappeared in the increased population (10⁸ cfu/mL) of Salmonella Typhimurium recovered by adding a protease inhibitor cocktail. Therefore, it has been concluded that our challenge using the E. coli secretion system with the protease inhibitors is an attractive strategy for practical application of peptide toxins, such as MP-V1.
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33
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Zhang H, Zhang B, Zhang X, Wang X, Wu K, Guan Q. Effects of cathelicidin-derived peptide from reptiles on lipopolysaccharide-induced intestinal inflammation in weaned piglets. Vet Immunol Immunopathol 2017; 192:41-53. [PMID: 29042014 DOI: 10.1016/j.vetimm.2017.09.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Revised: 09/16/2017] [Accepted: 09/20/2017] [Indexed: 12/15/2022]
Abstract
Cathelicidins are the largest family of antimicrobial peptides. C-BF, which is short for Cathelicidin-Bungarus Fasciatus, was isolated from snake venom. C-BF was found to be the most potential substitutes for antibiotics. In this study, we analyzed the effects of cathelicidin-derived peptide C-BF, on lipopolysaccharide (LPS)-induced intestinal damage in weaned piglets, to evaluate the therapeutic effect of C-BF on infectious disease of piglets. Twenty-four piglets were randomly assigned into four groups: control, C-BF, LPS, and C-BF+LPS. The LPS and C-BF+LPS groups were intraperitoneally injected with LPS at fixed timepoints, while the control and C-BF groups were injected with equal volumes of saline. The C-BF and C-BF+LPS groups were then intraperitoneally injected with antimicrobial peptide C-BF, while the control and LPS groups were injected with equal volumes of saline. All piglets were observed for 15days and then sacrificed for analysis. The results showed that C-BF significantly improved the growth performance of weaned piglets compared with LPS-treated animals (P<0.05), and that C-BF could ameliorate the structural and developmental damage to the small intestine caused by LPS treatment. Further, the level of apoptosis in the LPS group was significantly higher than in the other three groups (P<0.05), as was the invasion of inflammatory cells into the intestinal mucosa of the jejunum (P<0.05), leading to increased secretion of pro-inflammatory cytokines. In conclusion, the study indicates that C-BF treatment may be a potential therapy for LPS/pathogen-induced intestinal injury in piglets.
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Affiliation(s)
- Haiwen Zhang
- Key Laboratory of Tropical Animal Breeding and Epidemic Disease Research of Hainan Province, Hainan University, Haikou, Hainan, 570228, People's Republic of China; Laboratory of Tropical Animal Breeding, Reproduction and Nutrition, Hainan University, Haikou, Hainan, 570228, People's Republic of China.
| | - Bingxi Zhang
- Key Laboratory of Tropical Animal Breeding and Epidemic Disease Research of Hainan Province, Hainan University, Haikou, Hainan, 570228, People's Republic of China.
| | - Xiaomeng Zhang
- Key Laboratory of Tropical Animal Breeding and Epidemic Disease Research of Hainan Province, Hainan University, Haikou, Hainan, 570228, People's Republic of China.
| | - Xuemei Wang
- Key Laboratory of Tropical Animal Breeding and Epidemic Disease Research of Hainan Province, Hainan University, Haikou, Hainan, 570228, People's Republic of China; Laboratory of Tropical Animal Breeding, Reproduction and Nutrition, Hainan University, Haikou, Hainan, 570228, People's Republic of China.
| | - Kebang Wu
- Key Laboratory of Tropical Animal Breeding and Epidemic Disease Research of Hainan Province, Hainan University, Haikou, Hainan, 570228, People's Republic of China; Laboratory of Tropical Animal Breeding, Reproduction and Nutrition, Hainan University, Haikou, Hainan, 570228, People's Republic of China.
| | - Qingfeng Guan
- Key Laboratory of Tropical Animal Breeding and Epidemic Disease Research of Hainan Province, Hainan University, Haikou, Hainan, 570228, People's Republic of China; Laboratory of Tropical Animal Breeding, Reproduction and Nutrition, Hainan University, Haikou, Hainan, 570228, People's Republic of China.
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Endogenous antimicrobial factors in the treatment of infectious diseases. Cent Eur J Immunol 2017; 41:419-425. [PMID: 28450805 PMCID: PMC5382887 DOI: 10.5114/ceji.2016.65141] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2016] [Accepted: 06/27/2016] [Indexed: 11/17/2022] Open
Abstract
Nowadays, a number of antibiotic-resistant bacteria strains is increasing. It is a serious clinical problem and poses a threat to the effectiveness of conventional antibiotic therapy. Thus, scientists are constantly seeking new alternatives for treatment of infectious diseases. There are some natural endogenous factors, which possess antimicrobial activities against a large number of microorganisms, including both Gram-positive and Gram-negative bacteria, viruses and fungi. These factors are present in all eukaryotic organisms and constitute an essential element of their immune system. A large number of in vitro and in vivo models have been used to show the activity of antimicrobial factors, and only few studies have been conducted on people. Results indicate that administration of these molecules is therapeutically beneficial. This review summarizes knowledge of selected endogenous antimicrobial agents, such as cathelicidins, defensins, histatins, lysozyme and lactoferrin. We also discuss potential uses of these factors in the treatment of infectious diseases.
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Gomes A, Ghosh S, Ghosh S, Saha K, Saha PP, Dasgupta SC, Gomes A. Anti-osteoarthritic activity of Bungarus fasciatus venom fraction BF-F47 involving molecular markers in the rats. Toxicon 2016; 118:43-6. [PMID: 27108237 DOI: 10.1016/j.toxicon.2016.04.039] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2016] [Revised: 03/31/2016] [Accepted: 04/18/2016] [Indexed: 01/28/2023]
Abstract
A heat stable protein BF-F47 was purified from the crude venom of Bungarus fasciatus by CM cellulose ion exchange chromatography and HPLC. Osteoarthritis (OA) was developed in male albino Wistar rats by collagenase injection. BF-F47 treatment significantly restored urinary hydroxyproline and glucosamine in OA rats. Serum acid phosphatase, alkaline phosphatase, creatinine and serum molecular markers TNF-α, IL-1β, IL-17, cytokine induced neutrophil chemoattractant-1, matrix metalloproteinase-1, cathepsin-K, osteocalcin and PGE2 were also significantly altered. BF-F47 showed partial restoration of osteoarthritis joints. Thus, BF-F47 induced anti-osteoarthritic activity in Wistar rats acted through molecular markers of arthritis and inflammation.
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Affiliation(s)
- Antony Gomes
- Laboratory of Toxinology & Experimental Pharmacodynamics, Department of Physiology, University of Calcutta, 92, A.P.C Road, Kolkata, 700009, India.
| | - Susmita Ghosh
- Laboratory of Toxinology & Experimental Pharmacodynamics, Department of Physiology, University of Calcutta, 92, A.P.C Road, Kolkata, 700009, India
| | - Sourav Ghosh
- Laboratory of Toxinology & Experimental Pharmacodynamics, Department of Physiology, University of Calcutta, 92, A.P.C Road, Kolkata, 700009, India
| | - Kalyani Saha
- Laboratory of Toxinology & Experimental Pharmacodynamics, Department of Physiology, University of Calcutta, 92, A.P.C Road, Kolkata, 700009, India
| | | | | | - Aparna Gomes
- Former Chief Scientist, CSIR-Indian Institute of Chemical Biology, Kolkata, West Bengal, India
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