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Deng S, Li Z, Yuan L, Zeng H. An Exceptionally Active and Highly Selective Perchlorate Transporter Containing a Trimesic Amide Scaffold. Molecules 2024; 29:1118. [PMID: 38474632 DOI: 10.3390/molecules29051118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2024] [Revised: 02/27/2024] [Accepted: 02/29/2024] [Indexed: 03/14/2024] Open
Abstract
We report here a series of alkyl group-modified trimesic amide molecules (TAs) with excellent anion transport activities. Among them, TA6, with the highest ion transport activity and excellent selectivity, efficiently transports anions across the membrane in the order of ClO4- > I- > NO3- > Br- > Cl-, with an EC50 value as low as 17.6 nM (0.022 mol% relative to lipid molecules) for ClO4-, which outperforms other anions by 5- to 22-folds and manifests as the best perchlorate transporter ever reported.
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Affiliation(s)
- Shaowen Deng
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425100, China
| | - Zhongyan Li
- College of Chemistry, Fuzhou University, Fuzhou 350116, China
| | - Lin Yuan
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou 425100, China
| | - Huaqiang Zeng
- College of Chemistry, Fuzhou University, Fuzhou 350116, China
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2
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Yaraguppi DA, Bagewadi ZK, Patil NR, Mantri N. Iturin: A Promising Cyclic Lipopeptide with Diverse Applications. Biomolecules 2023; 13:1515. [PMID: 37892197 PMCID: PMC10604914 DOI: 10.3390/biom13101515] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 10/10/2023] [Accepted: 10/11/2023] [Indexed: 10/29/2023] Open
Abstract
This comprehensive review examines iturin, a cyclic lipopeptide originating from Bacillus subtilis and related bacteria. These compounds are structurally diverse and possess potent inhibitory effects against plant disease-causing bacteria and fungi. Notably, Iturin A exhibits strong antifungal properties and low toxicity, making it valuable for bio-pesticides and mycosis treatment. Emerging research reveals additional capabilities, including anticancer and hemolytic features. Iturin finds applications across industries. In food, iturin as a biosurfactant serves beyond surface tension reduction, enhancing emulsions and texture. Biosurfactants are significant in soil remediation, agriculture, wound healing, and sustainability. They also show promise in Microbial Enhanced Oil Recovery (MEOR) in the petroleum industry. The pharmaceutical and cosmetic industries recognize iturin's diverse properties, such as antibacterial, antifungal, antiviral, anticancer, and anti-obesity effects. Cosmetic applications span emulsification, anti-wrinkle, and antibacterial use. Understanding iturin's structure, synthesis, and applications gains importance as biosurfactant and lipopeptide research advances. This review focuses on emphasizing iturin's structural characteristics, production methods, biological effects, and applications across industries. It probes iturin's antibacterial, antifungal potential, antiviral efficacy, and cancer treatment capabilities. It explores diverse applications in food, petroleum, pharmaceuticals, and cosmetics, considering recent developments, challenges, and prospects.
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Affiliation(s)
- Deepak A. Yaraguppi
- Department of Biotechnology, KLE Technological University, Hubballi 580031, Karnataka, India;
| | - Zabin K. Bagewadi
- Department of Biotechnology, KLE Technological University, Hubballi 580031, Karnataka, India;
| | - Ninganagouda R. Patil
- Department of Physics, B. V Bhoomaraddi College of Engineering and Technology, Hubballi 580031, Karnataka, India;
| | - Nitin Mantri
- The Pangenomics Lab, School of Science, RMIT University, Bundoora, VIC 3083, Australia
- The UWA Institute of Agriculture, The University of Western Australia, Perth, WA 6009, Australia
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3
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Sinha T, Malakar C, Talukdar NC. Mustard seed–associated endophytes suppress Sclerotinia sclerotiorum causing Sclerotinia rot in mustard crop. Int Microbiol 2022:10.1007/s10123-022-00314-0. [PMID: 36542232 DOI: 10.1007/s10123-022-00314-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2022] [Revised: 12/08/2022] [Accepted: 12/11/2022] [Indexed: 12/24/2022]
Abstract
Mustard-rapeseed cultivation is affected by Sclerotinia sclerotiorum resulting in loss of oil yield and degradation of crop quality. This study adopted an environment friendly biocontrol approach of screening mustard endophytes against the pathogen. Two bacterial isolates, Bacillus safensis (TS46 bac4) and Bacillus australimaris (SM2) showed potential biocontrol activity under both in vitro and in vivo conditions. Dual culture assay reported 90% inhibition of fungal growth. The bacterial cell free supernatant of isolate SM2 showed 52.89% inhibition and the other isolate TS46 bac4 showed 57.97% inhibition. The crude (10 mg/ml) and purified (10 mg/ml) metabolite extract of SM2 showed 100% and 97% inhibition respectively. Both crude (10 mg/ml) and purified (7.5 mg/ml) metabolite extract of TS46 bac4 exhibited 99% inhibition of the pathogen. Antifungal lipopeptides: surfactin, iturin and fengycin were identified in bacterial metabolite extract of the isolates. Both strains promoted healthy germination and prevented the formation of any disease symptoms in seedling. The selected Bacillus strains applied by spray method showed better results against fungal infection on mustard leaf and stem. Microscopic studies revealed degradation of fungal mycelial growth by both isolates. These findings support the employment of the bacterial strains as potential biocontrol agents to reduce the effects of S. sclerotiorum in mustard-rapeseed.
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4
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Bunker ME, Arnold AE, Weiss SL. Wild microbiomes of striped plateau lizards vary with reproductive season, sex, and body size. Sci Rep 2022; 12:20643. [PMID: 36450782 PMCID: PMC9712514 DOI: 10.1038/s41598-022-24518-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Accepted: 11/16/2022] [Indexed: 12/05/2022] Open
Abstract
Long-term studies of animal microbiomes under natural conditions are valuable for understanding the effects of host demographics and environmental factors on host-associated microbial communities, and how those effects interact and shift over time. We examined how the cloacal microbiome of wild Sceloporus virgatus (the striped plateau lizard) varies under natural conditions in a multi-year study. Cloacal swabs were collected from wild-caught lizards across their entire active season and over three years in southeastern Arizona, USA. Analyses of 16S rRNA data generated on the Illumina platform revealed that cloacal microbiomes of S. virgatus vary as a function of season, sex, body size, and reproductive state, and do so independently of one another. Briefly, microbial diversity was lowest in both sexes during the reproductive season, was higher in females than in males, and was lowest in females when they were vitellogenic, and microbiome composition varied across seasons, sexes, and sizes. The pattern of decreased diversity during reproductive periods with increased sociality is surprising, as studies in other systems often suggest that microbial diversity generally increases with sociality. The cloacal microbiome was not affected significantly by hibernation and was relatively stable from year to year. This study highlights the importance of long term, wide-scale microbiome studies for capturing accurate perspectives on microbiome diversity and composition in animals. It also serves as a warning for comparisons of microbiomes across species, as each may be under a different suite of selective pressures or exhibit short-term variation from external or innate factors, which may differ in a species-specific manner.
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Affiliation(s)
- Marie E. Bunker
- grid.267047.00000 0001 2105 7936Department of Biology, University of Puget Sound, Tacoma, WA USA
| | - A. Elizabeth Arnold
- grid.134563.60000 0001 2168 186XSchool of Plant Sciences and Department of Ecology and Evolutionary Biology, The University of Arizona, Tucson, AZ USA
| | - Stacey L. Weiss
- grid.267047.00000 0001 2105 7936Department of Biology, University of Puget Sound, Tacoma, WA USA
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5
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McMahon TC, Kingombe CB, Mathews A, Seyer K, Wong A, Blais BW, Carrillo CD. Microbial Antagonism in Food-Enrichment Culture: Inhibition of Shiga Toxin-Producing Escherichia coli and Shigella Species. Front Microbiol 2022; 13:880043. [PMID: 35814680 PMCID: PMC9259949 DOI: 10.3389/fmicb.2022.880043] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Accepted: 05/18/2022] [Indexed: 11/13/2022] Open
Abstract
Bacterial pathogens, such as Shiga toxin-producing Escherichia coli (STEC) and Shigella spp., are important causes of foodborne illness internationally. Recovery of these organisms from foods is critical for food safety investigations to support attribution of illnesses to specific food commodities; however, isolation of bacterial cultures can be challenging. Methods for the isolation of STEC and Shigella spp. from foods typically require enrichment to amplify target organisms to detectable levels. Yet, during enrichment, target organisms can be outcompeted by other bacteria in food matrices due to faster growth rates, or through production of antimicrobial agents such as bacteriocins or bacteriophages. The purpose of this study was to evaluate the occurrence of Shigella and STEC inhibitors produced by food microbiota. The production of antimicrobial compounds in cell-free extracts from 200 bacterial strains and 332 food-enrichment broths was assessed. Cell-free extracts produced by 23 (11.5%) of the strains tested inhibited growth of at least one of the five Shigella and seven STEC indicator strains used in this study. Of the 332 enrichment broths tested, cell-free extracts from 25 (7.5%) samples inhibited growth of at least one of the indicator strains tested. Inhibition was most commonly associated with E. coli recovered from meat products. Most of the inhibiting compounds were determined to be proteinaceous (34 of the 48 positive samples, 71%; including 17 strains, 17 foods) based on inactivation by proteolytic enzymes, indicating presence of bacteriocins. The cell-free extracts from 13 samples (27%, eight strains, five foods) were determined to contain bacteriophages based on the observation of plaques in diluted extracts and/or resistance to proteolytic enzymes. These results indicate that the production of inhibitors by food microbiota may be an important challenge for the recovery of foodborne pathogens, particularly for Shigella sonnei. The performance of enrichment media for recovery of Shigella and STEC could be improved by mitigating the impact of inhibitors produced by food microbiota during the enrichment process.
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Affiliation(s)
- Tanis C. McMahon
- Research and Development, Ottawa Laboratory (Carling), Ontario Laboratory Network, Canadian Food Inspection Agency, Ottawa, ON, Canada
- Department of Biology, Carleton University, Ottawa, ON, Canada
| | | | - Amit Mathews
- Microbiology, Greater Toronto Area Laboratory, Ontario Laboratory Network, Canadian Food Inspection Agency, Toronto, ON, Canada
| | - Karine Seyer
- Microbiology (Food), St-Hyacinthe Laboratory, Eastern Laboratories Network, Canadian Food Inspection Agency, St-Hyacinthe, QC, Canada
| | - Alex Wong
- Department of Biology, Carleton University, Ottawa, ON, Canada
| | - Burton W. Blais
- Research and Development, Ottawa Laboratory (Carling), Ontario Laboratory Network, Canadian Food Inspection Agency, Ottawa, ON, Canada
| | - Catherine D. Carrillo
- Research and Development, Ottawa Laboratory (Carling), Ontario Laboratory Network, Canadian Food Inspection Agency, Ottawa, ON, Canada
- *Correspondence: Catherine D. Carrillo,
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Skowronek M, Sajnaga E, Kazimierczak W, Lis M, Wiater A. Screening and Molecular Identification of Bacteria from the Midgut of Amphimallon solstitiale Larvae Exhibiting Antagonistic Activity against Bacterial Symbionts of Entomopathogenic Nematodes. Int J Mol Sci 2021; 22:ijms222112005. [PMID: 34769435 PMCID: PMC8584744 DOI: 10.3390/ijms222112005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Revised: 10/29/2021] [Accepted: 11/02/2021] [Indexed: 12/31/2022] Open
Abstract
Entomopathogenic nematodes (Rhabditida: Steinernematidae and Heterorhabditidae) are a group of organisms capable of infecting larvae of insects living in soil, including representatives of the family Scarabaeidae. Their insecticidal activity is related to the presence of symbiotic bacteria Xenorhabdus spp. or Photorhabdus spp. in the alimentary tract, which are released into the insect body, leading to its death caused by bacterial toxins and septicemia. Although the antibacterial activities of symbionts of entomopathogenic nematodes have been well described, there is insufficient knowledge of the interactions between these bacteria and microorganisms that naturally inhabit the alimentary tract of insects infested by nematodes. In this study, 900 bacterial strains isolated from midgut samples of Amphimallon solstitiale larvae were tested for their antagonistic activity against the selected five Xenorhabdus and Photorhabdus species. Cross-streak tests showed significant antibacterial activity of 20 isolates. These bacteria were identified as Bacillus [Brevibacterium] frigoritolerans, Bacillus toyonensis, Bacillus wiedmannii, Chryseobacterium lathyri, Chryseobacterium sp., Citrobacter murliniae, Enterococcus malodoratus, Paenibacillus sp., Serratia marcescens and Serratia sp. Since some representatives of the intestinal microbiota of A. solstitiale are able to inhibit the growth of Xenorhabdus and Photorhrhabdus bacteria in vitro, it can be assumed that this type of bacterial interaction may occur at certain stages of insect infection by Steinernema or Heterorhabditis nematodes.
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Affiliation(s)
- Marcin Skowronek
- Laboratory of Biocontrol, Production and Application of EPN, Centre for Interdisciplinary Research, The John Paul II Catholic University of Lublin, 20-708 Lublin, Poland; (E.S.); (W.K.); (M.L.)
- Correspondence: (M.S.); (A.W.)
| | - Ewa Sajnaga
- Laboratory of Biocontrol, Production and Application of EPN, Centre for Interdisciplinary Research, The John Paul II Catholic University of Lublin, 20-708 Lublin, Poland; (E.S.); (W.K.); (M.L.)
| | - Waldemar Kazimierczak
- Laboratory of Biocontrol, Production and Application of EPN, Centre for Interdisciplinary Research, The John Paul II Catholic University of Lublin, 20-708 Lublin, Poland; (E.S.); (W.K.); (M.L.)
| | - Magdalena Lis
- Laboratory of Biocontrol, Production and Application of EPN, Centre for Interdisciplinary Research, The John Paul II Catholic University of Lublin, 20-708 Lublin, Poland; (E.S.); (W.K.); (M.L.)
| | - Adrian Wiater
- Department of Industrial and Environmental Microbiology, Institute of Biological Sciences, Maria Curie-Sklodowska University, 20-033 Lublin, Poland
- Correspondence: (M.S.); (A.W.)
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7
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Microbial Lipopeptide-Producing Strains and Their Metabolic Roles under Anaerobic Conditions. Microorganisms 2021; 9:microorganisms9102030. [PMID: 34683351 PMCID: PMC8540375 DOI: 10.3390/microorganisms9102030] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2021] [Revised: 09/09/2021] [Accepted: 09/10/2021] [Indexed: 01/17/2023] Open
Abstract
The lipopeptide produced by microorganisms is one of the representative biosurfactants and is characterized as a series of structural analogues of different families. Thirty-four families covering about 300 lipopeptide compounds have been reported in the last decades, and most of the reported lipopeptides produced by microorganisms were under aerobic conditions. The lipopeptide-producing strains under anaerobic conditions have attracted much attention from both the academic and industrial communities, due to the needs and the challenge of their applications in anaerobic environments, such as in oil reservoirs and in microbial enhanced oil recovery (MEOR). In this review, the fifty-eight reported bacterial strains, mostly isolated from oil reservoirs and dominated by the species Bacillus subtilis, producing lipopeptide biosurfactants, and the species Pseudomonas aeruginosa, producing glycolipid biosurfactants under anaerobic conditions were summarized. The metabolic pathway and the non-ribosomal peptide synthetases (NRPSs) of the strain Bacillus subtilis under anaerobic conditions were analyzed, which is expected to better understand the key mechanisms of the growth and production of lipopeptide biosurfactants of such kind of bacteria under anaerobic conditions, and to expand the industrial application of anaerobic biosurfactant-producing bacteria.
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Van Moll L, De Smet J, Cos P, Van Campenhout L. Microbial symbionts of insects as a source of new antimicrobials: a review. Crit Rev Microbiol 2021; 47:562-579. [PMID: 34032192 DOI: 10.1080/1040841x.2021.1907302] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
To stop the antimicrobial resistance crisis, there is an urgent need for increased investment in antimicrobial research and development. Currently, many researchers are focussing on insects and their microbiota in the search for new antimicrobials. This review summarizes recent literature dedicated to the antimicrobial screening of insect symbionts and/or their metabolites to uncover their value in early drug discovery. We summarize the main steps in the methodology used to isolate and identify active insect symbionts and have noted substantial variation among these studies. There is a clear trend in isolating insect Streptomyces bacteria, but a broad range of other symbionts has been found to be active as well. The microbiota of many insect genera and orders remains untargeted so far, which leaves much room for future research. The antimicrobial screening of insect symbionts has led to the discovery of a diverse array of new active biomolecules, mainly peptides, and polyketides. Here, we discuss 15 of these symbiont-produced compounds and their antimicrobial profile. Cyphomycin, isolated from a Streptomyces symbiont of a Cyphomyrmex fungus-growing ant, seems to be the most promising insect symbiont-derived antimicrobial so far. Overall, insect microbiota appears to be a promising search area to discover new antimicrobial drug candidates.
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Affiliation(s)
- Laurence Van Moll
- Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory for Microbiology, Parasitology and Hygiene (LMPH), University of Antwerp, Antwerp, Belgium.,Department of Microbial and Molecular Systems (M2S), KU Leuven, Geel, Belgium.,Leuven Food Science and Nutrition Research Centre (LFoRCe), KU Leuven, Leuven, Belgium
| | - Jeroen De Smet
- Department of Microbial and Molecular Systems (M2S), KU Leuven, Geel, Belgium.,Leuven Food Science and Nutrition Research Centre (LFoRCe), KU Leuven, Leuven, Belgium
| | - Paul Cos
- Faculty of Pharmaceutical, Biomedical and Veterinary Sciences, Laboratory for Microbiology, Parasitology and Hygiene (LMPH), University of Antwerp, Antwerp, Belgium
| | - Leen Van Campenhout
- Department of Microbial and Molecular Systems (M2S), KU Leuven, Geel, Belgium.,Leuven Food Science and Nutrition Research Centre (LFoRCe), KU Leuven, Leuven, Belgium
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Akbar N, Siddiqui R, Iqbal M, Sagathevan K, Kim KS, Habib F, Khan NA. Gut Bacteria of Rattus rattus (Rat) Produce Broad-Spectrum Antibacterial Lipopeptides. ACS OMEGA 2021; 6:12261-12273. [PMID: 34056379 PMCID: PMC8154139 DOI: 10.1021/acsomega.1c01137] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Accepted: 04/14/2021] [Indexed: 05/14/2023]
Abstract
Among several animals, Rattus rattus (rat) lives in polluted environments and feeds on organic waste/small invertebrates, suggesting the presence of inherent mechanisms to thwart infections. In this study, we isolated gut bacteria of rats for their antibacterial activities. Using antibacterial assays, the findings showed that the conditioned media from selected bacteria exhibited bactericidal activities against Gram-negative (Escherichia coli K1, Klebsiella pneumoniae, Pseudomonas aeruginosa, Serratia marcescens, and Salmonella enterica) and Gram-positive (Bacillus cereus, methicillin-resistant Staphylococcus aureus, and Streptococcus pyogenes) pathogenic bacteria. The conditioned media retained their antibacterial properties upon heat treatment at boiling temperature for 10 min. Using MTT assays, the conditioned media showed minimal cytotoxic effects against human keratinocyte cells. Active conditioned media were subjected to tandem mass spectrometry, and the results showed that conditioned media from Bacillus subtilis produced a large repertoire of surfactin and iturin A (lipopeptides) molecules. To our knowledge, this is the first report of isolation of lipopeptides from bacteria isolated from the rat gut. In short, these findings are important and provide a platform to develop effective antibacterial drugs.
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Affiliation(s)
- Noor Akbar
- Department of Biological Sciences, School of Science and Technology, Sunway University, Bandar Sunway 47500, Malaysia
- College of Arts and Sciences, American University of Sharjah, University City, Sharjah 26666, United Arab Emirates
| | - Ruqaiyyah Siddiqui
- College of Arts and Sciences, American University of Sharjah, University City, Sharjah 26666, United Arab Emirates
| | - Mazhar Iqbal
- Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering, Faisalabad 44000, Pakistan
| | - Kuppusamy Sagathevan
- Department of Biological Sciences, School of Science and Technology, Sunway University, Bandar Sunway 47500, Malaysia
| | - Kwang Sik Kim
- Division of Pediatrics Infectious Diseases, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, United States
| | - Fazal Habib
- Health Biotechnology Division, National Institute for Biotechnology and Genetic Engineering, Faisalabad 44000, Pakistan
| | - Naveed Ahmed Khan
- Department of Clinical Sciences, College of Medicine, University of Sharjah, University City, Sharjah 27272, Unites Arab Emirates
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Meena KR, Dhiman R, Singh K, Kumar S, Sharma A, Kanwar SS, Mondal R, Das S, Franco OL, Mandal AK. Purification and identification of a surfactin biosurfactant and engine oil degradation by Bacillus velezensis KLP2016. Microb Cell Fact 2021; 20:26. [PMID: 33509221 PMCID: PMC7844888 DOI: 10.1186/s12934-021-01519-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2020] [Accepted: 01/16/2021] [Indexed: 11/24/2022] Open
Abstract
Engine oil used in automobiles is a threat to soil and water due to the recalcitrant properties of its hydrocarbons. It pollutes surrounding environment which affects both flora and fauna. Microbes can degrade hydrocarbons containing engine oil and utilize it as a substrate for their growth. Our results demonstrated that cell-free broth of Bacillus velezensis KLP2016 (Gram + ve, endospore forming; Accession number KY214239) recorded an emulsification index (E24%) from 52.3% to 65.7% against different organic solvents, such as benzene, pentane, cyclohexane, xylene, n-hexane, toluene and engine oil. The surface tension of the cell-free broth of B. velezensis grown in Luria–Bertani broth at 35 °C decreased from 55 to 40 mN m−1at critical micelle concentration 17.2 µg/mL. The active biosurfactant molecule of cell-free broth of Bacillus velezensis KLP2016 was purified by Dietheylaminoethyl-cellulose and size exclusion chromatography, followed by HPLC (RT = 1.130), UV–vis spectrophotometry (210 nm) and thin layer chromatography (Rf = 0.90). The molecular weight of purified biosurfactant was found to be ~ 1.0 kDa, based on Electron Spray Ionization-MS. A concentration of 1980 × 10–2 parts per million of CO2 was trapped in a KOH solution after 15 days of incubation in Luria–Bertani broth containing 1% engine oil. Our results suggest that bacterium Bacillus velezensis KLP2016 may promise a new dimension to solving the engine oil pollution problem in near future.
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Affiliation(s)
- Khem Raj Meena
- Department of Microbiology, CBS&H, Dr. Rajendra Prasad Central Agricultural University, Pusa, Samastipur, 848125, Bihar, India. .,Department of Biotechnology, Himachal Pradesh University, Shimla, 171 005, India.
| | - Rajni Dhiman
- Forest Research Institute, Dehradun, 248006, India.,Department of Biotechnology, Himachal Pradesh University, Shimla, 171 005, India
| | - Kailash Singh
- Department of Chemistry, Himachal Pradesh University, Shimla, 171 005, India
| | - Sachin Kumar
- Department of Zoology, University of Rajasthan, Jaipur, 302 004, India
| | - Abhishek Sharma
- Department of Biotechnology, Himachal Pradesh University, Shimla, 171 005, India
| | - Shamsher S Kanwar
- Department of Biotechnology, Himachal Pradesh University, Shimla, 171 005, India
| | - Rittick Mondal
- Chemical Biology Laboratory, Department of Sericulture, North Dinajpur, Raiganj, 733134, West Bengal, India
| | - Sandip Das
- School of Sciences, Netaji Open University, Durgapur, West Bengal, India
| | - Octavio L Franco
- Post-Graduate Program in Biotechnology, Catholic University Dom Bosco, Campo Grande, Mato Grosso do Sul, Brazil. .,Centro de Análises Proteômicas E Bioquímicas, Programa de Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília, Brasília, Distrito Federal, Brazil.
| | - Amit Kumar Mandal
- Chemical Biology Laboratory, Department of Sericulture, North Dinajpur, Raiganj, 733134, West Bengal, India. .,Centre for Nanotechnology Sciences, Raiganj University, North Dinajpur, Raiganj, 733134, West Bengal, India.
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Sebola TE, Uche-Okereafor NC, Mekuto L, Makatini MM, Green E, Mavumengwana V. Antibacterial and Anticancer Activity and Untargeted Secondary Metabolite Profiling of Crude Bacterial Endophyte Extracts from Crinum macowanii Baker Leaves. Int J Microbiol 2020; 2020:8839490. [PMID: 33488726 PMCID: PMC7803143 DOI: 10.1155/2020/8839490] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2020] [Revised: 09/29/2020] [Accepted: 11/26/2020] [Indexed: 01/08/2023] Open
Abstract
This study isolated and identified endophytic bacteria from the leaves of Crinum macowanii and investigated the potential of the bacterial endophyte extracts as antibacterial and anticancer agents and their subsequent secondary metabolites. Ethyl acetate extracts from the endophytes and the leaves (methanol: dichloromethane (1 : 1)) were used for antibacterial activity against selected pathogenic bacterial strains by using the broth microdilution method. The anticancer activity against the U87MG glioblastoma and A549 lung carcinoma cells was determined by the MTS (3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxy-phenyl)-2-(4-sulfophenyl)-2H-tetrazolium) assay. Bacterial endophytes that were successfully isolated from C. macowanii leaves include Raoultella ornithinolytica, Acinetobacter guillouiae, Pseudomonas sp., Pseudomonas palleroniana, Pseudomonas putida, Bacillus safensis, Enterobacter asburiae, Pseudomonas cichorii, and Arthrobacter pascens. Pseudomonas cichorii exhibited broad antibacterial activity against both Gram-negative and Gram-positive pathogenic bacteria while Arthrobacter pascens displayed the least MIC of 0.0625 mg/mL. Bacillus safensis crude extracts were the only sample that showed notable cell reduction of 50% against A549 lung carcinoma cells at a concentration of 100 μg/mL. Metabolite profiling of Bacillus safensis, Pseudomonas cichorii, and Arthrobacter pascens crude extracts revealed the presence of known antibacterial and/or anticancer agents such as lycorine (1), angustine (2), crinamidine (3), vasicinol (4), and powelline. It can be concluded that the crude bacterial endophyte extracts obtained from C. macowanii leaves can biosynthesize bioactive compounds and can be bioprospected for medical application into antibacterial and anticancer agents.
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Affiliation(s)
- Tendani E. Sebola
- Department of Biotechnology and Food Technology, Faculty of Science, University of Johannesburg, Doornfontein Campus, Johannesburg, South Africa
| | - Nkemdinma C. Uche-Okereafor
- Department of Biotechnology and Food Technology, Faculty of Science, University of Johannesburg, Doornfontein Campus, Johannesburg, South Africa
| | - Lukhanyo Mekuto
- Department of Chemical Engineering, Faculty of Engineering and the Built Environment, University of Johannesburg, Doornfontein Campus, Johannesburg, South Africa
| | - Maya Mellisa Makatini
- Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Johannesburg, South Africa
| | - Ezekiel Green
- Department of Biotechnology and Food Technology, Faculty of Science, University of Johannesburg, Doornfontein Campus, Johannesburg, South Africa
| | - Vuyo Mavumengwana
- DST-NRF Centre of Excellence for Biomedical Tuberculosis Research, South African Medical Research Council Centre for Tuberculosis Research, Division of Molecular Biology and Human Genetics, Faculty of Medicine and Health Sciences, Stellenbosch University, Tygerberg Campus, Cape Town, South Africa
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12
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Chowdhury T, Baindara P, Mandal SM. LPD-12: a promising lipopeptide to control COVID-19. Int J Antimicrob Agents 2020; 57:106218. [PMID: 33166692 PMCID: PMC7647407 DOI: 10.1016/j.ijantimicag.2020.106218] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 08/01/2020] [Accepted: 10/31/2020] [Indexed: 12/31/2022]
Abstract
Introduction : The recent pandemic outbreak of SARS-CoV-2 has been associated with a lethal atypical pneumonia, making COVID-19 an urgent public health issue with an increasing rate of mortality and morbidity. There are currently no vaccines or therapeutics available for COVID-19, which is causing an urgent search for a new drug to combat the COVID-19 pandemic. The lipid membrane alternation efficiency of small antimicrobial lipopeptides enables them to block viral membrane fusion to the host cell. Lipopeptides could serve as potential antiviral agents, by interacting or competing with viral fusion proteins. Methods : This study screened seven different lipopeptides (tsushimycin, daptomycin, surfactin, bacillomycin, iturin, srfTE, and LPD-12) and docked them individually against the spike (S)-glycoprotein of SARS-CoV-2. Results : Based on the maximum docked score and minimum atomic contact energy, LPD-12 (–1137.38 kcal) was the appropriate molecule for proper binding with the S-glycoprotein of SARS-CoV-2 and thus significantly interrupted its affinity of binding with angiotensin-converting enzyme-2 (ACE2), which is the only receptor molecule found to be facilitating disease development. The results confirmed a strong binding affinity of LPD-12 with ACE2, with a binding free energy of –1621.62 kcal, which could also reciprocally prevent the binding of S-protein. Conclustion : It can be concluded that LPD-12 may act as a potential therapeutic drug, by reducing the entry of SARS-CoV-2 to the human cells via the ACE2 receptor and related infections.
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Affiliation(s)
- Trinath Chowdhury
- Central Research Facility, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Piyush Baindara
- Department of Molecular Microbiology and Immunology, University of Missouri, Columbia, USA
| | - Santi M Mandal
- Central Research Facility, Indian Institute of Technology Kharagpur, Kharagpur, India.
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Sharma D, Singh SS, Baindara P, Sharma S, Khatri N, Grover V, Patil PB, Korpole S. Surfactin Like Broad Spectrum Antimicrobial Lipopeptide Co-produced With Sublancin From Bacillus subtilis Strain A52: Dual Reservoir of Bioactives. Front Microbiol 2020; 11:1167. [PMID: 32595619 PMCID: PMC7300217 DOI: 10.3389/fmicb.2020.01167] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Accepted: 05/07/2020] [Indexed: 01/31/2023] Open
Abstract
An antimicrobial substance producing strain designated as A52 was isolated from a marine sediment sample and identified as Bacillus sp., based on 16S rRNA gene sequence analysis. The ANI and dDDH analysis of the genome sequence displayed high identity with two strains of B. subtilis sub sp. subtilis. Strain A52 yielded two antimicrobial peptides (AMPs) that differed in activity spectrum. MALDI mass spectrometry analysis of HPLC purified fractions revealed mass of peptides as 3881.6 and 1061.9 Da. The antiSMASH analysis of genome sequence unraveled presence of identical biosynthetic cluster involved in production of sublancin from B. subtilis sub sp. subtilis strain 168, which yielded peptide with identical mass. The low molecular weight peptide is found to be a cyclic lipopeptide containing C16 β-hydroxy fatty acid that resembled surfactin-like group of biosurfactants. However, it differed in fatty acid composition and antimicrobial spectrum in comparison to other surfactins produced by strains of B. subtilis. It exhibited broad spectrum antibacterial activity, inhibited growth of pathogenic strains of Candida and filamentous fungi. Further, it exhibited hemolytic activity, but did not show phytotoxic effect in seed germination experiment. The emulgel formulation of surfactin-like lipopeptide showed antimicrobial activity in vitro and did not show any irritation effects in animal studies using BALB/c mice. Moreover, surfactin-like lipopeptide displayed synergistic activity with fluconazole against Candida, indicating its potential for external therapeutic applications.
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Affiliation(s)
- Deepika Sharma
- Council of Scientific and Industrial Research (CSIR) - Institute of Microbial Technology, Chandigarh, India
| | - Shelley Sardul Singh
- Council of Scientific and Industrial Research (CSIR) - Institute of Microbial Technology, Chandigarh, India
| | - Piyush Baindara
- Council of Scientific and Industrial Research (CSIR) - Institute of Microbial Technology, Chandigarh, India
| | - Shikha Sharma
- Council of Scientific and Industrial Research (CSIR) - Institute of Microbial Technology, Chandigarh, India
| | - Neeraj Khatri
- Council of Scientific and Industrial Research (CSIR) - Institute of Microbial Technology, Chandigarh, India
| | - Vishakha Grover
- Dr. Harvansh Singh Judge Institute of Dental Sciences & Hospital, Panjab University, Chandigarh, India
| | - Prabhu B Patil
- Council of Scientific and Industrial Research (CSIR) - Institute of Microbial Technology, Chandigarh, India
| | - Suresh Korpole
- Council of Scientific and Industrial Research (CSIR) - Institute of Microbial Technology, Chandigarh, India
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14
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Chowdhury T, Mandal SM, Kumari R, Ghosh AK. Purification and characterization of a novel antimicrobial peptide (QAK) from the hemolymph of Antheraea mylitta. Biochem Biophys Res Commun 2020; 527:411-417. [DOI: 10.1016/j.bbrc.2020.04.050] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Accepted: 04/11/2020] [Indexed: 12/11/2022]
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15
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Skowronek M, Sajnaga E, Pleszczyńska M, Kazimierczak W, Lis M, Wiater A. Bacteria from the Midgut of Common Cockchafer ( Melolontha melolontha L.) Larvae Exhibiting Antagonistic Activity Against Bacterial Symbionts of Entomopathogenic Nematodes: Isolation and Molecular Identification. Int J Mol Sci 2020; 21:ijms21020580. [PMID: 31963214 PMCID: PMC7013910 DOI: 10.3390/ijms21020580] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 01/13/2020] [Accepted: 01/14/2020] [Indexed: 12/27/2022] Open
Abstract
The mechanisms of action of the complex including entomopathogenic nematodes of the genera Steinernema and Heterorhabditis and their mutualistic partners, i.e., bacteria Xenorhabdus and Photorhabdus, have been well explained, and the nematodes have been commercialized as biological control agents against many soil insect pests. However, little is known regarding the nature of the relationships between these bacteria and the gut microbiota of infected insects. In the present study, 900 bacterial isolates that were obtained from the midgut samples of Melolontha melolontha larvae were screened for their antagonistic activity against the selected species of the genera Xenorhabdus and Photorhabdus. Twelve strains exhibited significant antibacterial activity in the applied tests. They were identified based on 16S rRNA and rpoB, rpoD, or recA gene sequences as Pseudomonas chlororaphis, Citrobacter murliniae, Acinetobacter calcoaceticus, Chryseobacterium lathyri, Chryseobacterium sp., Serratia liquefaciens, and Serratia sp. The culture filtrate of the isolate P. chlororaphis MMC3 L3 04 exerted the strongest inhibitory effect on the tested bacteria. The results of the preliminary study that are presented here, which focused on interactions between the insect gut microbiota and mutualistic bacteria of entomopathogenic nematodes, show that bacteria inhabiting the gut of insects might play a key role in insect resistance to entomopathogenic nematode pressure.
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Affiliation(s)
- Marcin Skowronek
- Laboratory of Biocontrol, Application and Production of EPN, Centre for Interdisciplinary Research, Faculty of Biotechnology and Environmental Sciences, John Paul II Catholic University of Lublin, ul. Konstantynów 1J, 20-708 Lublin, Poland; (E.S.); (W.K.); (M.L.)
- Correspondence: (M.S.); (A.W.)
| | - Ewa Sajnaga
- Laboratory of Biocontrol, Application and Production of EPN, Centre for Interdisciplinary Research, Faculty of Biotechnology and Environmental Sciences, John Paul II Catholic University of Lublin, ul. Konstantynów 1J, 20-708 Lublin, Poland; (E.S.); (W.K.); (M.L.)
| | - Małgorzata Pleszczyńska
- Department of Industrial and Environmental Microbiology, Faculty of Biology and Biotechnology, Maria Curie-Skłodowska University, ul. Akademicka 19, 20-033 Lublin, Poland;
| | - Waldemar Kazimierczak
- Laboratory of Biocontrol, Application and Production of EPN, Centre for Interdisciplinary Research, Faculty of Biotechnology and Environmental Sciences, John Paul II Catholic University of Lublin, ul. Konstantynów 1J, 20-708 Lublin, Poland; (E.S.); (W.K.); (M.L.)
| | - Magdalena Lis
- Laboratory of Biocontrol, Application and Production of EPN, Centre for Interdisciplinary Research, Faculty of Biotechnology and Environmental Sciences, John Paul II Catholic University of Lublin, ul. Konstantynów 1J, 20-708 Lublin, Poland; (E.S.); (W.K.); (M.L.)
| | - Adrian Wiater
- Department of Industrial and Environmental Microbiology, Faculty of Biology and Biotechnology, Maria Curie-Skłodowska University, ul. Akademicka 19, 20-033 Lublin, Poland;
- Correspondence: (M.S.); (A.W.)
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16
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Zeng F, Liu F, Yuan L, Zhou S, Shen J, Li N, Ren H, Zeng H. A Pore-Forming Tripeptide as an Extraordinarily Active Anion Channel. Org Lett 2019; 21:4826-4830. [DOI: 10.1021/acs.orglett.9b01723] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Fei Zeng
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou, Hunan, China 425100
| | - Fang Liu
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou, Hunan, China 425100
| | - Lin Yuan
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou, Hunan, China 425100
| | - Shaoyuan Zhou
- College of Chemical Engineering, Sichuan University, Chengdu, China 610065
| | - Jie Shen
- NanoBio Lab, 31 Biopolis Way, The Nanos, Singapore 138669
| | - Ning Li
- NanoBio Lab, 31 Biopolis Way, The Nanos, Singapore 138669
| | - Haisheng Ren
- College of Chemical Engineering, Sichuan University, Chengdu, China 610065
| | - Huaqiang Zeng
- NanoBio Lab, 31 Biopolis Way, The Nanos, Singapore 138669
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17
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Manna S, Ghosh AK, Mandal SM. Curd-Peptide Based Novel Hydrogel Inhibits Biofilm Formation, Quorum Sensing, Swimming Mortility of Multi-Antibiotic Resistant Clinical Isolates and Accelerates Wound Healing Activity. Front Microbiol 2019; 10:951. [PMID: 31139155 PMCID: PMC6527846 DOI: 10.3389/fmicb.2019.00951] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2019] [Accepted: 04/15/2019] [Indexed: 01/12/2023] Open
Abstract
The search for a bioactive natural antibacterial agent with wound healing properties is a common practice for the development of new-generation molecules. Antimicrobial peptides are a good alternative to antibiotics and easy-to-form hydrogels under self-assembled conditions without pH adjustment. With this in mind, the peptide pool was extracted from a formulated curd composed of a blend of probiotic bacteria such as Streptococcus thermophilus, Lactobacillus casei, and Bifidobacterium bifidum at an optimized ratio of 7:1:2. The water content of curd was collected by the drainage column, centrifuged, filtered through a 0.45-μM filter, and used for hydrogel preparation. Matrix-assisted laser desorption/ionization time of flight (MALDI-TOF) mass spectrometry (MS) analysis confirmed the presence of peptide pool in the extracted water. The prepared hydrogel was freeze dried, and its effect on biofilm formation, swarming mortality, antimicrobials, wound healing, and biocompatibility was subsequently verified. Transmission electron microscope (TEM) and scanning electron microscope (SEM) images revealed the fibrous network of peptides after self-assembly with non-polar n-hexane solvent and a porous structure after drying, respectively. The observed biocompatibility, antimicrobial activity, and strong wound healing activity of the developed curd-based hydrogel have opened a new platform for antibacterial ointment formulation.
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Affiliation(s)
- Sounik Manna
- Central Research Facility, Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Ananta K Ghosh
- Central Research Facility, Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, India
| | - Santi M Mandal
- Central Research Facility, Department of Biotechnology, Indian Institute of Technology Kharagpur, Kharagpur, India
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18
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Antitumoral and Antimicrobial Activity of Surfactin Extracted from Bacillus subtilis KLP2015. Int J Pept Res Ther 2019. [DOI: 10.1007/s10989-019-09848-w] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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19
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20
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Jemil N, Hmidet N, Manresa A, Rabanal F, Nasri M. Isolation and characterization of kurstakin and surfactin isoforms produced by Enterobacter cloacae C3 strain. JOURNAL OF MASS SPECTROMETRY : JMS 2019; 54:7-18. [PMID: 30324699 DOI: 10.1002/jms.4302] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2018] [Revised: 10/08/2018] [Accepted: 10/09/2018] [Indexed: 06/08/2023]
Abstract
In this work, the extraction, structural analysis, and identification as well as antimicrobial, anti-adhesive, and antibiofilm activities of lipopeptides produced by Enterobacter cloacae C3 strain were studied. A combination of chromatographic and spectroscopic techniques offers opportunities for a better characterization of the biosurfactant structure. Thin layer chromatography (TLC) and HPLC for amino acid composition determination are used. Efficient spectroscopic techniques have been utilized for investigations on the biochemical structure of biosurfactants, such as Fourier transform infrared (FT-IR) spectroscopy and mass spectrometry analysis. This is the first work describing the production of different isoforms belonging to kurstakin and surfactin families by E cloacae strain. Three kurstakin homologues differing by the fatty acid chain length from C10 to C12 were detected. The spectrum of lipopeptides belonging to surfactin family contains various isoforms differing by the fatty acid chain length as well as the amino acids at positions four and seven. Lipopeptide C3 extract exhibited important antibacterial activity against Gram-positive and Gram-negative bacteria, antifungal activity, and interesting anti-adhesive and disruptive properties against biofilm formation by human pathogenic bacterial strains: Salmonella typhimurium, Klebsiella pneumoniae, Staphylococcus aureus, Bacillus cereus, and Candida albicans.
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Affiliation(s)
- Nawel Jemil
- Laboratoire de Génie Enzymatique et de Microbiologie, Université de Sfax, Ecole Nationale d'Ingénieurs de Sfax, Sfax, Tunisia
| | - Noomen Hmidet
- Laboratoire de Génie Enzymatique et de Microbiologie, Université de Sfax, Ecole Nationale d'Ingénieurs de Sfax, Sfax, Tunisia
| | - Angeles Manresa
- Section of Microbiology, Department of Biology, Health and Environment, Faculty of Pharmacy, University of Barcelona, Barcelona, Spain
| | - Francesc Rabanal
- Section of Organic Chemistry, Department of Inorganic and Organic Chemistry, Faculty of Chemistry, University of Barcelona, Barcelona, Spain
| | - Moncef Nasri
- Laboratoire de Génie Enzymatique et de Microbiologie, Université de Sfax, Ecole Nationale d'Ingénieurs de Sfax, Sfax, Tunisia
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21
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Yuan L, Shen J, Ye R, Chen F, Zeng H. Structurally simple trimesic amides as highly selective anion channels. Chem Commun (Camb) 2019; 55:4797-4800. [PMID: 30945706 DOI: 10.1039/c9cc00248k] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Trimesic amide molecules, which contain simple alkyl chains in their periphery, exhibit interesting anion-transport functions. The most active and highly selective channel TA12 efficiently transports ClO4- anions across membranes, with other anions conducted in the order of I- > NO3- > Br- > Cl-.
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Affiliation(s)
- Lin Yuan
- College of Chemistry and Bioengineering, Hunan University of Science and Engineering, Yongzhou, Hunan 425100, China
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22
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de Almeida Lopes KB, Carpentieri-Pipolo V, Fira D, Balatti PA, López SMY, Oro TH, Stefani Pagliosa E, Degrassi G. Screening of bacterial endophytes as potential biocontrol agents against soybean diseases. J Appl Microbiol 2018; 125:1466-1481. [PMID: 29978936 DOI: 10.1111/jam.14041] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 05/28/2018] [Accepted: 06/08/2018] [Indexed: 12/23/2022]
Abstract
AIMS This research was aimed at identifying and characterizing endophytic micro-organisms associated with soybean that have antimicrobial activity towards soybean pathogens. METHODS AND RESULTS Soybean plants were collected from field trials in four locations of southern Brazil that were cultivated with conventional (C) and transgenic glyphosate-resistant (GR) soybeans. Endophytic bacteria isolated from roots, stems and leaves of soybeans were evaluated for their capacity to inhibit fungal and bacterial plant pathogens and 13 micro-organisms were identified with antagonistic activity. Approximately 230 bacteria were isolated and identified based on the 16S rRNA and rpoN gene sequences. Bacteria isolated from conventional and transgenic soybeans were significantly different not only in population diversity but also in their antagonistic capacity. Thirteen isolates showed in vitro antagonism against Sclerotinia sclerotiorum, Phomopsis sojae and Rhizoctonia solani. Bacillus sp. and Burkholderia sp. were the most effective isolates in controlling bacterial and fungal pathogens in vitro. Extracts and precipitates from culture supernatants of isolates showed different patterns of inhibitory activity on growth of fungal and bacterial pathogens. CONCLUSIONS Bacillus sp. and Burkholderia sp. were the most effective isolates in controlling fungal pathogens in vitro, and the activity is mainly due to peptides. However, most of the studied bacteria showed the presence of antimicrobial compounds in the culture supernatant, either peptides, bacteriocins or secondary metabolites. SIGNIFICANCE AND IMPACT OF THE STUDY These results could be significant to develop tools for the biological control of soybean diseases. The work brought to the identification of micro-organisms such as Bacillus sp. and Burkholderia sp. that have the potential to protect crops in order to enhance a sustainable management system of crops. Furthermore, the study provides the first evidences of the influence of management as well as the genetics of glyphosate-resistant soybean on the diversity of bacterial endophytes of soybean phytobiome.
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Affiliation(s)
| | | | - Djordje Fira
- Faculty of Biology, University of Belgrade, Belgrade, Serbia
| | - Pedro Alberto Balatti
- Centro de Investigaciones de Fitopatología, Fac. de Ciencias Agrarias y Forestales - UNLP, La Plata, Argentina
| | | | | | | | - Giuliano Degrassi
- International Center for Genetic Engineering and Biotechnology, Polo Cientifico Tecnologico, Buenos Aires, Argentina
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Isolation and structural elucidation of pelgipeptin E, a novel pore-forming pelgipeptin analog from Paenibacillus elgii with low hemolytic activity. J Antibiot (Tokyo) 2018; 71:1008-1017. [PMID: 30135470 DOI: 10.1038/s41429-018-0095-2] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 07/18/2018] [Accepted: 07/31/2018] [Indexed: 01/06/2023]
Abstract
Pelgipeptins are cyclic lipopeptides composed of nine amino acids and a short fatty acid chain. In the present study, we report a novel pelgipeptin peptide that was isolated from Paenibacillus elgii BC34-6 and named pelgipeptin E (PGP-E). The molecular mass of PGP-E was 1072 Da as determined by liquid chromatography-mass spectrometry and the amino acid sequence was elucidated by tandem mass spectrometry. The complete molecular structure of PGP-E was characterized using 2D NMR spectroscopy. PGP-E consisted of a cyclic peptide backbone of Dab1-Val2-Dab3-Phe4-Leu5-Dab6-Val7-Leu8-Ser9 and a lipid chain (-CH2CH2CH3). PGP-E had broad antimicrobial activity against gram-negative and -positive bacteria, including methicillin-resistant Staphylococcus aureus strains. Furthermore, the mode of action of PGP-E was investigated using calcein dye leakage and membrane depolarization assays, which suggest that PGP-E acts via a membrane-active mechanism. The hemolytic activity of PGP-E was significantly lower than that of melittin, a well-known membrane-active peptide derived from bee venom. These results suggest that PGP-E is a potential candidate in the development of new peptide antibiotics.
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Moravej H, Moravej Z, Yazdanparast M, Heiat M, Mirhosseini A, Moosazadeh Moghaddam M, Mirnejad R. Antimicrobial Peptides: Features, Action, and Their Resistance Mechanisms in Bacteria. Microb Drug Resist 2018; 24:747-767. [PMID: 29957118 DOI: 10.1089/mdr.2017.0392] [Citation(s) in RCA: 170] [Impact Index Per Article: 28.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
In recent years, because of increased resistance to conventional antimicrobials, many researchers have started to study the synthesis of new antibiotics to control the disease-causing effects of infectious pathogens. Antimicrobial peptides (AMPs) are among the newest antibiotics; these peptides are integral compounds in all kinds of organisms and play a significant role in microbial ecology, and critically contribute to the innate immunity of organisms by destroying invading microorganisms. Moreover, AMPs may encourage cells to produce chemokines, stimulate angiogenesis, accelerate wound healing, and influence programmed cell death in multicellular organisms. Bacteria differ in their inherent susceptibility and resistance mechanisms to these peptides when responding to the antimicrobial effects of AMPs. Generally, the development of AMP resistance mechanisms is driven by direct competition between bacterial species, and host and pathogen interactions. Several studies have shown diverse mechanisms of bacterial resistance to AMPs, for example, some bacteria produce proteases and trapping proteins; some modify cell surface charge, change membrane fluidity, and activate efflux pumps; and some species make use of biofilms and exopolymers, and develop sensing systems by selective gene expression. A closer understanding of bacterial resistance mechanisms may help in developing novel therapeutic approaches for the treatment of infections caused by pathogenic organisms that are successful in developing extensive resistance to AMPs. Based on these observations, this review discusses the properties of AMPs, their targeting mechanisms, and bacterial resistance mechanisms against AMPs.
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Affiliation(s)
- Hoda Moravej
- 1 Molecular Biology Research Center, Systems Biology and Poisoning Institute, Baqiyatallah University of Medical Sciences , Tehran, Iran
| | - Zahra Moravej
- 2 Department of Hepatitis and AIDS, Pasteur Institute of Iran , Tehran, Iran
| | - Maryam Yazdanparast
- 3 Department of Pharmacology, Experimental Medicine Research Center, School of Medicine, Tehran University of Medical Sciences , Tehran, Iran
| | - Mohammad Heiat
- 4 Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences , Tehran, Iran
| | - Ali Mirhosseini
- 5 Applied Microbiology Research Center, Systems Biology and Poisoning Institute, Baqiyatallah University of Medical Sciences , Tehran, Iran
| | | | - Reza Mirnejad
- 1 Molecular Biology Research Center, Systems Biology and Poisoning Institute, Baqiyatallah University of Medical Sciences , Tehran, Iran
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Ren C, Zeng F, Shen J, Chen F, Roy A, Zhou S, Ren H, Zeng H. Pore-Forming Monopeptides as Exceptionally Active Anion Channels. J Am Chem Soc 2018; 140:8817-8826. [DOI: 10.1021/jacs.8b04657] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Changliang Ren
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos 138669, Singapore
| | - Fei Zeng
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos 138669, Singapore
| | - Jie Shen
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos 138669, Singapore
| | - Feng Chen
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos 138669, Singapore
| | - Arundhati Roy
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos 138669, Singapore
| | - Shaoyuan Zhou
- College of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Haisheng Ren
- College of Chemical Engineering, Sichuan University, Chengdu 610065, China
| | - Huaqiang Zeng
- Institute of Bioengineering and Nanotechnology, 31 Biopolis Way, The Nanos 138669, Singapore
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Fungal Disease Prevention in Seedlings of Rice (Oryza sativa) and Other Grasses by Growth-Promoting Seed-Associated Endophytic Bacteria from Invasive Phragmites australis. Microorganisms 2018. [PMID: 29518024 PMCID: PMC5874635 DOI: 10.3390/microorganisms6010021] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023] Open
Abstract
Non-cultivated plants carry microbial endophytes that may be used to enhance development and disease resistance of crop species where growth-promoting and protective microbes may have been lost. During seedling establishment, seedlings may be infected by several fungal pathogens that are seed or soil borne. Several species of Fusarium, Pythium and other water moulds cause seed rots during germination. Fusarium blights of seedlings are also very common and significantly affect seedling development. In the present study we screened nine endophytic bacteria isolated from the seeds of invasive Phragmites australis by inoculating onto rice, Bermuda grass (Cynodon dactylon), or annual bluegrass (Poa annua) seeds to evaluate plant growth promotion and protection from disease caused by Fusarium oxysporum. We found that three bacteria belonging to genus Pseudomonas spp. (SLB4-P. fluorescens, SLB6-Pseudomonas sp. and SY1-Pseudomonas sp.) promoted seedling development, including enhancement of root and shoot growth, and stimulation of root hair formation. These bacteria were also found to increase phosphate solubilization in in vitro experiments. Pseudomonas sp. (SY1) significantly protected grass seedlings from Fusarium infection. In co-culture experiments, strain SY1 strongly inhibited fungal pathogens with 85.71% growth inhibition of F. oxysporum, 86.33% growth inhibition of Curvularia sp. and 82.14% growth inhibition of Alternaria sp. Seedlings previously treated with bacteria were found much less infected by F. oxysporum in comparison to non-treated controls. On microscopic observation we found that bacteria appeared to degrade fungal mycelia actively. Metabolite products of strain SY1 in agar were also found to inhibit fungal growth on nutrient media. Pseudomonas sp. (SY1) was found to produce antifungal volatiles. Polymerase chain reaction (PCR) amplification using specific primers for pyrrolnitirin synthesis and HCN (hydrogen cyanide) production suggested presence of genes for both compounds in the genome of SY1. HCN was detected in cultures of SY1. We conclude that microbes from non-cultivated plants may provide disease protection and promote growth of crop plants.
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Chin CFS, Furuya Y, Zainudin MHM, Ramli N, Hassan MA, Tashiro Y, Sakai K. Novel multifunctional plant growth–promoting bacteria in co-compost of palm oil industry waste. J Biosci Bioeng 2017; 124:506-513. [DOI: 10.1016/j.jbiosc.2017.05.016] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Revised: 05/24/2017] [Accepted: 05/26/2017] [Indexed: 01/04/2023]
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Nkhalambayausi Chirwa EM, Mampholo CT, Fayemiwo OM, Bezza FA. Biosurfactant assisted recovery of the C 5-C 11 hydrocarbon fraction from oily sludge using biosurfactant producing consortium culture of bacteria. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2017; 196:261-269. [PMID: 28288360 DOI: 10.1016/j.jenvman.2017.03.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2015] [Revised: 02/27/2017] [Accepted: 03/03/2017] [Indexed: 06/06/2023]
Abstract
A biosurfactant producing culture of bacteria was isolated from an automobile engine oil dump site which was later used as an inoculum in batch and continuous flow oil recovery from oily sludge. Initially, an emulsion of oily sludge was prepared by mixing 5% m/v solids: 21% v/v bituminous sludge: 77% v/v water. The isolated cultures were added to vessels with stable emulsions to facilitate the separation of oil droplets from the sludge matrix. In batches with live cultures, up to 35% oil recovery was achieved after incubation for 10 days. Further investigations were conducted in a semi-continuous feed, fed-batch plug flow reactor (FB-PFR) system. Up to 99.7% was achieved in the FB-PFR after operation for 10 days, much higher than the recovery achieved in the pure batch systems where only 35% oil was recovered after incubation for 10 days. The improved performance in the FB-PFR was attributed to differential separation of particles under variable velocity along the reactor. The culture in the reactor was predominated by Klebsiellae, Enterobacteriaceae and Bacilli throughout the experiment. A crude biosurfactant produced by the cultures was partially purified and analyzed using the liquid chromatograph coupled to a tandem mass spectrometer (LC-MS/MS) which showed that the molecular structure of the biosurfactant produced closely matched the structure of lipopeptides identified in earlier studies. This process is aimed at recovering useful oil from oily waste sludge with the added advantage of degrading aromatic organic impurities in the oil to produce a cleaner oil product. The further advantage of the FB-PFR system was that, the bacteria discharged together with effluent sludge residue further degraded chemical oxygen demand (COD) in the treated sludge thereby reducing the polluting potential of the final disposed sludge.
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Affiliation(s)
| | - Chidinyane T Mampholo
- Department of Chemical Engineering, University of Pretoria, Pretoria 0002, South Africa
| | | | - Fisseha A Bezza
- Department of Chemical Engineering, University of Pretoria, Pretoria 0002, South Africa
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Mamo G. Anaerobes as Sources of Bioactive Compounds and Health Promoting Tools. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2017; 156:433-464. [PMID: 27432247 DOI: 10.1007/10_2016_6] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Aerobic microorganisms have been sources of medicinal agents for several decades and an impressive variety of drugs have been isolated from their cultures, studied and formulated to treat or prevent diseases. On the other hand, anaerobes, which are believed to be the oldest life forms on earth and evolved remarkably diverse physiological functions, have largely been neglected as sources of bioactive compounds. However, results obtained from the limited research done so far show that anaerobes are capable of producing a range of interesting bioactive compounds that can promote human health. In fact, some of these bioactive compounds are found to be novel in their structure and/or mode of action.Anaerobes play health-promoting roles through their bioactive products as well as application of whole cells. The bioactive compounds produced by these microorganisms include antimicrobial agents and substances such as immunomodulators and vitamins. Bacteriocins produced by anaerobes have been in use as preservatives for about 40 years. Because these substances are effective at low concentrations, encounter relatively less resistance from bacteria and are safe to use, there is a growing interest in these antimicrobial agents. Moreover, several antibiotics have been reported from the cultures of anaerobes. Closthioamide and andrimid produced by Clostridium cellulolyticum and Pantoea agglomerans, respectively, are examples of novel antibiotics of anaerobe origin. The discovery of such novel bioactive compounds is expected to encourage further studies which can potentially lead to tapping of the antibiotic production potential of this fascinating group of microorganisms.Anaerobes are widely used in preparation of fermented foods and beverages. During the fermentation processes, these organisms produce a number of bioactive compounds including anticancer, antihypertensive and antioxidant substances. The well-known health promoting effect of fermented food is mostly due to these bioactive compounds. In addition to their products, whole cell anaerobes have very interesting applications for enhancing the quality of life. Probiotic anaerobes have been on the market for many years and are receiving growing acceptance as health promoters. Gut anaerobes have been used to treat patients suffering from severe Clostridium difficile infection syndromes including diarrhoea and colitis which cannot be treated by other means. Whole cell anaerobes are also studied to detect and cure cancer. In recent years, evidence is emerging that anaerobes constituting the microbiome are linked to our overall health. A dysfunctional microbiome is believed to be the cause of many diseases including cancer, allergy, infection, obesity, diabetes and several other disorders. Maintaining normal microflora is believed to alleviate some of these serious health problems. Indeed, the use of probiotics and prebiotics which favourably change the number and composition of the gut microflora is known to render a health promoting effect. Our interaction with the microbiome anaerobes is complex. In fact, not only our lives but also our identities are more closely linked to the anaerobic microbial world than we may possibly imagine. We are just at the beginning of unravelling the secret of association between the microbiome and human body, and a clear understanding of the association may bring a paradigm shift in the way we diagnose and treat diseases and disorders. This chapter highlights some of the work done on bioactive compounds and whole cell applications of the anaerobes that foster human health and improve the quality of life.
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Affiliation(s)
- Gashaw Mamo
- Biotechnology, Center for Chemistry & Chemical Engineering, Lund University, 221 00, Lund, Sweden.
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Silva M, Rosado T, Teixeira D, Candeias A, Caldeira AT. Green mitigation strategy for cultural heritage: bacterial potential for biocide production. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:4871-4881. [PMID: 27988897 DOI: 10.1007/s11356-016-8175-y] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/15/2016] [Accepted: 11/28/2016] [Indexed: 06/06/2023]
Abstract
Several biosurfactants with antagonistic activity are produced by a variety of microorganisms. Lipopeptides (LPPs) produced by some Bacillus strains, including surfactin, fengycin and iturin are synthesized nonribosomally by mega-peptide synthetase (NRPS) units and they are particularly relevant as antifungal agents. Characterisation, identification and evaluation of the potentials of several bacterial isolates were undertaken in order to establish the production of active lipopeptides against biodeteriogenic fungi from heritage assets. Analysis of the iturin operon revealed four open reading frames (ORFs) with the structural organisation of the peptide synthetases. Therefore, this work adopted a molecular procedure to access antifungal potential of LPP production by Bacillus strains in order to exploit the bioactive compounds synthesis as a green natural approach to be applied in biodegraded cultural heritage context. The results reveal that the bacterial strains with higher antifungal potential exhibit the same morphological and biochemical characteristics, belonging to the genera Bacillus. On the other hand, the higher iturinic genetic expression, for Bacillus sp. 3 and Bacillus sp. 4, is in accordance with the culture antifungal spectra. Accordingly, the adopted methodology combining antifungal screening and molecular data is represent a valuable tool for quick identification of iturin-producing strains, constituting an effective approach for confirming the selection of lipopeptides producer strains.
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Affiliation(s)
- Mara Silva
- Chemistry Department, School of Sciences and Technology, Évora University, Rua Romão Ramalho 59, 7000-671, Évora, Portugal
- HERCULES Laboratory, Évora University, Largo Marquês de Marialva 8, 7000-809, Évora, Portugal
| | - Tânia Rosado
- HERCULES Laboratory, Évora University, Largo Marquês de Marialva 8, 7000-809, Évora, Portugal
| | - Dora Teixeira
- Chemistry Department, School of Sciences and Technology, Évora University, Rua Romão Ramalho 59, 7000-671, Évora, Portugal
- HERCULES Laboratory, Évora University, Largo Marquês de Marialva 8, 7000-809, Évora, Portugal
| | - António Candeias
- Chemistry Department, School of Sciences and Technology, Évora University, Rua Romão Ramalho 59, 7000-671, Évora, Portugal
- HERCULES Laboratory, Évora University, Largo Marquês de Marialva 8, 7000-809, Évora, Portugal
| | - Ana Teresa Caldeira
- Chemistry Department, School of Sciences and Technology, Évora University, Rua Romão Ramalho 59, 7000-671, Évora, Portugal.
- HERCULES Laboratory, Évora University, Largo Marquês de Marialva 8, 7000-809, Évora, Portugal.
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Bhardwaj G, Cameotra SS, Chopra HK. Biosurfactant from Lysinibacillus chungkukjangi from Rice Bran Oil Sludge and Potential Applications. J SURFACTANTS DETERG 2016. [DOI: 10.1007/s11743-016-1857-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Alikkunju AP, Sainjan N, Silvester R, Joseph A, Rahiman M, Antony AC, Kumaran RC, Hatha M. Screening and Characterization of Cold-Active β-Galactosidase Producing Psychrotrophic Enterobacter ludwigii from the Sediments of Arctic Fjord. Appl Biochem Biotechnol 2016; 180:477-490. [PMID: 27188973 DOI: 10.1007/s12010-016-2111-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2015] [Accepted: 05/02/2016] [Indexed: 01/14/2023]
Abstract
Low-temperature-tolerant microorganisms and their cold-active enzymes could be an innovative and invaluable tool in various industrial applications. In the present study, bacterial isolates from the sediment samples of Kongsfjord, Norwegian Arctic, were screened for β-galactosidase production. Among the isolates, KS25, KS85, KS60, and KS92 have shown good potential in β-galactosidase production at 20 °C. 16SrRNA gene sequence analysis revealed the relatedness of the isolates to Enterobacter ludwigii. The optimum growth temperature of the isolate was 25 °C. The isolate exhibited good growth and enzyme production at a temperature range of 15-35 °C, pH 5-10. The isolate preferred yeast extract and lactose for the maximum growth and enzyme production at conditions of pH 7.0, temperature of 25 °C, and agitation speed of 100 rpm. The growth and enzyme production was stimulated by Mn2+ and Mg2+ and strongly inhibited by Zn2+, Ni2+, and Cu+. β-Galactosidases with high specific activity at low temperatures are very beneficial in food industry to compensate the nutritional problem associated with lactose intolerance. The isolate exhibited a remarkable capability to utilize clarified whey, an industrial pollutant, for good biomass and enzyme yield and hence could be well employed in whey bioremediation.
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Affiliation(s)
- Aneesa P Alikkunju
- Department of Marine Biology, Microbiology and Biochemistry, Cochin University of Science and Technology, Lakeside Campus, Cochin, 682016, Kerala, India.
| | - Neethu Sainjan
- Department of Marine Biology, Microbiology and Biochemistry, Cochin University of Science and Technology, Lakeside Campus, Cochin, 682016, Kerala, India
| | - Reshma Silvester
- Department of Marine Biology, Microbiology and Biochemistry, Cochin University of Science and Technology, Lakeside Campus, Cochin, 682016, Kerala, India
| | - Ajith Joseph
- Department of Marine Biology, Microbiology and Biochemistry, Cochin University of Science and Technology, Lakeside Campus, Cochin, 682016, Kerala, India
| | - Mujeeb Rahiman
- Department of Aquaculture and Fishery Microbiology, MES Ponnani College, Ponnani, 679586, Kerala, India
| | - Ally C Antony
- Department of Marine Biology, Microbiology and Biochemistry, Cochin University of Science and Technology, Lakeside Campus, Cochin, 682016, Kerala, India
| | - Radhakrishnan C Kumaran
- Department of Marine Biology, Microbiology and Biochemistry, Cochin University of Science and Technology, Lakeside Campus, Cochin, 682016, Kerala, India
| | - Mohamed Hatha
- Department of Marine Biology, Microbiology and Biochemistry, Cochin University of Science and Technology, Lakeside Campus, Cochin, 682016, Kerala, India
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Biniarz P, Łukaszewicz M, Janek T. Screening concepts, characterization and structural analysis of microbial-derived bioactive lipopeptides: a review. Crit Rev Biotechnol 2016; 37:393-410. [PMID: 27098391 DOI: 10.3109/07388551.2016.1163324] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Lipopeptide biosurfactants are surface active biomolecules that are produced by a variety of microorganisms. Microbial lipopeptides have gained the interest of microbiologists, chemists and biochemists for their high biodiversity as well as efficient action, low toxicity and good biodegradability in comparison to synthetic counterparts. In this report, we review methods for the production, isolation and screening, purification and structural characterization of microbial lipopeptides. Several techniques are currently available for each step, and we describe the most commonly utilized and recently developed techniques in this review. Investigations on lipopeptide biosurfactants in natural products require efficient isolation techniques for the characterization and evaluation of chemical and biological properties. A combination of chromatographic and spectroscopic techniques offer opportunities for a better characterization of lipopeptide structures, which in turn can lead to the application of lipopeptides in food, pharmaceutical, cosmetics, agricultural and bioremediation industries.
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Affiliation(s)
- Piotr Biniarz
- a Faculty of Biotechnology, University of Wroclaw , Wroclaw, Poland
| | | | - Tomasz Janek
- a Faculty of Biotechnology, University of Wroclaw , Wroclaw, Poland.,b Department of Inorganic Chemistry, Faculty of Pharmacy, Wroclaw Medical University , Wroclaw, Poland
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Medini K, Harris PWR, Menorca A, Hards K, Cook GM, Brimble MA. Synthesis and activity of a diselenide bond mimetic of the antimicrobial protein caenopore-5. Chem Sci 2016; 7:2005-2010. [PMID: 29899924 PMCID: PMC5968448 DOI: 10.1039/c5sc04187b] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2015] [Accepted: 12/06/2015] [Indexed: 12/13/2022] Open
Abstract
Antimicrobial proteins are a rich source of new lead compounds for the development of new drugs that will tackle global resistance towards existing antibiotics. Caenopore-5 (Cp-5) is an antimicrobial protein (AMP) expressed in the intestine of the nematode Caenorhabditis elegans and is a member of the lipid binding saposin-like-protein family, composed of 5 α-helices and 3 disulfide bonds. Substitution of the 7Cys and 81Cys by two selenocysteine 7U and 81U afforded a selenocysteine analogue [7Sec-81Sec]-Cp-5, which displayed a higher stability (using thermal circular dichroism) compared to the native protein Cp-5. [7Sec-81Sec]-Cp-5 and an N-terminal truncated peptide exhibited cell permeability similar to the wild type Cp-5.
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Affiliation(s)
- Karima Medini
- Maurice Wilkins Centre for Molecular Biodiscovery , School of Biological Sciences , The University of Auckland , 3A Symonds St , Auckland 1010 , New Zealand . ; ; Tel: +64 9 3737599
| | - Paul W R Harris
- Maurice Wilkins Centre for Molecular Biodiscovery , School of Biological Sciences , The University of Auckland , 3A Symonds St , Auckland 1010 , New Zealand . ; ; Tel: +64 9 3737599
- School of Chemical Sciences , The University of Auckland , 23 Symonds St. , Auckland 1010 , New Zealand
| | - Ayana Menorca
- Department of Microbiology and Immunology , School of Medical Sciences , University of Otago , 720 Cumberland Street , Dunedin 9054 , New Zealand
| | - Kiel Hards
- Department of Microbiology and Immunology , School of Medical Sciences , University of Otago , 720 Cumberland Street , Dunedin 9054 , New Zealand
| | - Gregory M Cook
- Department of Microbiology and Immunology , School of Medical Sciences , University of Otago , 720 Cumberland Street , Dunedin 9054 , New Zealand
| | - Margaret A Brimble
- Maurice Wilkins Centre for Molecular Biodiscovery , School of Biological Sciences , The University of Auckland , 3A Symonds St , Auckland 1010 , New Zealand . ; ; Tel: +64 9 3737599
- School of Chemical Sciences , The University of Auckland , 23 Symonds St. , Auckland 1010 , New Zealand
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35
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Lukic M, Pantelic I, Savic S. An Overview of Novel Surfactants for Formulation of Cosmetics with Certain Emphasis on Acidic Active Substances. TENSIDE SURFACT DET 2016. [DOI: 10.3139/113.110405] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Abstract
Novel surfactants which are nowadays available for incorporation into various formulations of personal care and cosmetic products are numerous, implying a permanent need for their classification. This overview provides essential information relating to synthesis, basic physicochemical characteristics, application and other relevant data on surfactants currently used in cosmetic products. In the second part of the paper an outline of acidic active substances with significant application in cosmetic products is given, as well as the problems that arise during preparation/manufacture of the containing formulations, accompanied with the review of scientific publications and other available reliable data dealing with the incorporation of these actives in the cosmetic formulations stabilized with novel (mainly natural) surfactants.
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Production and Biomedical Applications of Probiotic Biosurfactants. Curr Microbiol 2016; 72:489-95. [PMID: 26742771 DOI: 10.1007/s00284-015-0978-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2015] [Accepted: 11/24/2015] [Indexed: 01/23/2023]
Abstract
Biosurfactants have been widely used for environmental and industrial applications. However, their use in medical field is still limited. Probiotic biosurfactants possess an immense antimicrobial, anti-adhesive, antitumor, and antibiofilm potential. Moreover, they have an additional advantage over conventional microbial surfactants because probiotics are an integral part of normal human microflora and their biosurfactants are innocuous to human. So, they can be effectively exploited for medicinal use. Present review is aimed to discourse the production and biomedical applications of probiotic biosurfactants.
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Varvaresou A, Iakovou K. Biosurfactants in cosmetics and biopharmaceuticals. Lett Appl Microbiol 2015; 61:214-23. [PMID: 25970073 DOI: 10.1111/lam.12440] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 04/23/2015] [Accepted: 04/25/2015] [Indexed: 11/28/2022]
Abstract
Biosurfactants are surface-active biomolecules that are produced by various micro-organisms. They show unique properties i.e. lower toxicity, higher biodegradability and environmental compatibility compared to their chemical counterparts. Glycolipids and lipopeptides have prompted application in biotechnology and cosmetics due to their multi-functional profile i.e. detergency, emulsifying, foaming and skin hydrating properties. Additionally, some of them can be served as antimicrobials. In this study the current status of research and development on rhamnolipids, sophorolipids, mannosyloerythritol lipids, trehalipids, xylolipids and lipopeptides particularly their commercial application in cosmetics and biopharmaceuticals, is described.
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Affiliation(s)
- A Varvaresou
- Laboratory of Cosmetology, Department of Aesthetics and Cosmetology, Technological Educational Institution of Athens, Athens, Greece
| | - K Iakovou
- Department of Drugs, Ministry of Health, Athens, Greece
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Patel S, Ahmed S, Eswari JS. Therapeutic cyclic lipopeptides mining from microbes: latest strides and hurdles. World J Microbiol Biotechnol 2015; 31:1177-93. [PMID: 26041368 DOI: 10.1007/s11274-015-1880-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2015] [Accepted: 05/31/2015] [Indexed: 12/23/2022]
Abstract
Infectious diseases impose serious public health burdens and often have devastating consequences. The cyclic lipopeptides elaborated by bacteria Bacillus, Paenibacillus, Pseudomonas, Streptomyces, Serratia, Propionibacterium and fungus Fusarium are very crucial in restraining the pathogens. Composed of a peptide and a fatty acyl moiety these amphiphilic metabolites exhibit broad spectrum antimicrobial effects. Among the plethora of cyclic lipopeptides, only selective few have emerged as robust antibiotics. For their functional vigor, polymyxin, daptomycin, surfactin, iturin, fengysin, paenibacterin and pseudofactin have been integrated in mainstream healthcare. Daptomycin has been a significant part of antimicrobial arsenal since the past decade. As the magnitude of drug resistance rises in unprecedented manner, the urgency of prospecting novel cyclic lipopeptides is being perceived. Intense research has revealed the implication of these bioactive compounds stretching beyond antibacterial and antifungal. Anticancer, immunomodulatory, prosthetic parts disinfection and vaccine adjuvancy are some of the validated prospects. This review discusses the emerging applications, mechanisms governing the biological actions, role of genomics in refining structure and function, semi-synthetic analog discovery, novel strain isolation, setbacks etc. Though its beyond the scope of the current topic, for holistic purpose, the role of lipopeptides in bioremediation and crop biotechnology has been briefly outlined. This updated critique is expected to galvanize innovations and diversify therapeutic recruitment of microbial lipopeptides.
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Affiliation(s)
- Seema Patel
- Bioinformatics and Medical Informatics Research Center, San Diego State University, San Diego, CA, 92182, USA,
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39
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In vitro studies of antimicrobial activity of Gly-His-Lys conjugates as potential and promising candidates for therapeutics in skin and tissue infections. Bioorg Med Chem Lett 2015; 25:542-6. [DOI: 10.1016/j.bmcl.2014.12.029] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2014] [Revised: 12/09/2014] [Accepted: 12/09/2014] [Indexed: 12/12/2022]
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40
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You J, Yang SZ, Mu BZ. Structural characterization of lipopeptides fromEnterobactersp. strain N18 reveals production of surfactin homologues. EUR J LIPID SCI TECH 2015. [DOI: 10.1002/ejlt.201400386] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Jia You
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry; East China University of Science and Technology; Shanghai P. R. China
| | - Shi-Zhong Yang
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry; East China University of Science and Technology; Shanghai P. R. China
| | - Bo-Zhong Mu
- State Key Laboratory of Bioreactor Engineering and Institute of Applied Chemistry; East China University of Science and Technology; Shanghai P. R. China
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41
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Meena KR, Kanwar SS. Lipopeptides as the antifungal and antibacterial agents: applications in food safety and therapeutics. BIOMED RESEARCH INTERNATIONAL 2015; 2015:473050. [PMID: 25632392 PMCID: PMC4303012 DOI: 10.1155/2015/473050] [Citation(s) in RCA: 191] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2014] [Revised: 09/26/2014] [Accepted: 10/02/2014] [Indexed: 11/17/2022]
Abstract
A lot of crops are destroyed by the phytopathogens such as fungi, bacteria, and yeast leading to economic losses to the farmers. Members of the Bacillus genus are considered as the factories for the production of biologically active molecules that are potential inhibitors of growth of phytopathogens. Plant diseases constitute an emerging threat to global food security. Many of the currently available antimicrobial agents for agriculture are highly toxic and nonbiodegradable and thus cause extended environmental pollution. Moreover, an increasing number of phytopathogens have developed resistance to antimicrobial agents. The lipopeptides have been tried as potent versatile weapons to deal with a variety of phytopathogens. All the three families of Bacillus lipopeptides, namely, Surfactins, Iturins and Fengycins, have been explored for their antagonistic activities towards a wide range of phytopathogens including bacteria, fungi, and oomycetes. Iturin and Fengycin have antifungal activities, while Surfactin has broad range of potent antibacterial activities and this has also been used as larvicidal agent. Interestingly, lipopeptides being the molecules of biological origin are environmentally acceptable.
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Affiliation(s)
- Khem Raj Meena
- Department of Biotechnology, Himachal Pradesh University, Summer Hill, Shimla 171 005, India
| | - Shamsher S. Kanwar
- Department of Biotechnology, Himachal Pradesh University, Summer Hill, Shimla 171 005, India
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Lau YY, Yin WF, Chan KG. Enterobacter asburiae strain L1: complete genome and whole genome optical mapping analysis of a quorum sensing bacterium. SENSORS 2014; 14:13913-24. [PMID: 25196111 PMCID: PMC4178997 DOI: 10.3390/s140813913] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/26/2014] [Revised: 07/07/2014] [Accepted: 07/23/2014] [Indexed: 01/01/2023]
Abstract
Enterobacter asburiae L1 is a quorum sensing bacterium isolated from lettuce leaves. In this study, for the first time, the complete genome of E. asburiae L1 was sequenced using the single molecule real time sequencer (PacBio RSII) and the whole genome sequence was verified by using optical genome mapping (OpGen) technology. In our previous study, E. asburiae L1 has been reported to produce AHLs, suggesting the possibility of virulence factor regulation which is quorum sensing dependent. This evoked our interest to study the genome of this bacterium and here we present the complete genome of E. asburiae L1, which carries the virulence factor gene virK, the N-acyl homoserine lactone-based QS transcriptional regulator gene luxR and the N-acyl homoserine lactone synthase gene which we firstly named easI. The availability of the whole genome sequence of E. asburiae L1 will pave the way for the study of the QS-mediated gene expression in this bacterium. Hence, the importance and functions of these signaling molecules can be further studied in the hope of elucidating the mechanisms of QS-regulation in E. asburiae. To the best of our knowledge, this is the first documentation of both a complete genome sequence and the establishment of the molecular basis of QS properties of E. asburiae.
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Affiliation(s)
- Yin Yin Lau
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia.
| | - Wai-Fong Yin
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia.
| | - Kok-Gan Chan
- Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur 50603, Malaysia.
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Mandal SM, Roy A, Ghosh AK, Hazra TK, Basak A, Franco OL. Challenges and future prospects of antibiotic therapy: from peptides to phages utilization. Front Pharmacol 2014; 5:105. [PMID: 24860506 PMCID: PMC4027024 DOI: 10.3389/fphar.2014.00105] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2014] [Accepted: 04/22/2014] [Indexed: 12/30/2022] Open
Abstract
Bacterial infections are raising serious concern across the globe. The effectiveness of conventional antibiotics is decreasing due to global emergence of multi-drug-resistant (MDR) bacterial pathogens. This process seems to be primarily caused by an indiscriminate and inappropriate use of antibiotics in non-infected patients and in the food industry. New classes of antibiotics with different actions against MDR pathogens need to be developed urgently. In this context, this review focuses on several ways and future directions to search for the next generation of safe and effective antibiotics compounds including antimicrobial peptides, phage therapy, phytochemicals, metalloantibiotics, lipopolysaccharide, and efflux pump inhibitors to control the infections caused by MDR pathogens.
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Affiliation(s)
- Santi M Mandal
- Central Research Facility, Department of Chemistry and Department of Biotechnology, Indian Institute of Technology Kharagpur Kharagpur, India
| | - Anupam Roy
- Central Research Facility, Department of Chemistry and Department of Biotechnology, Indian Institute of Technology Kharagpur Kharagpur, India
| | - Ananta K Ghosh
- Central Research Facility, Department of Chemistry and Department of Biotechnology, Indian Institute of Technology Kharagpur Kharagpur, India
| | - Tapas K Hazra
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, University of Texas Medical Branch at Galveston Galveston, TX, USA
| | - Amit Basak
- Central Research Facility, Department of Chemistry and Department of Biotechnology, Indian Institute of Technology Kharagpur Kharagpur, India
| | - Octavio L Franco
- Centro de Análises Proteômicas e Bioquímicas, Pós-Graduação em Ciências Genômicas e Biotecnologia, Universidade Católica de Brasília Brasilia, Brazil
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Smyth TJ, Rudden M, Tsaousi K, Marchant R, Banat IM. Protocols for the Isolation and Analysis of Lipopeptides and Bioemulsifiers. SPRINGER PROTOCOLS HANDBOOKS 2014. [DOI: 10.1007/8623_2014_29] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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Roy A, Mahata D, Paul D, Korpole S, Franco OL, Mandal SM. Purification, biochemical characterization and self-assembled structure of a fengycin-like antifungal peptide from Bacillus thuringiensis strain SM1. Front Microbiol 2013; 4:332. [PMID: 24312083 PMCID: PMC3836021 DOI: 10.3389/fmicb.2013.00332] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
An antifungal lipopeptide fengycin, producing strain SM1 was isolated from farm land soil sample and identified as Bacillus thuringiensis strain SM1 by using 16S rDNA analysis. Fengycin detected in the culture extract was further purified using HPLC and showed a molecular mass of 1492.8 Da by MALDI-TOF-MS analysis. Purified fengycin was allowed to construct their self-assembled structure onto a hydrophobic surface showing a clear improvement of antibacterial activity. In self-assembly, fengycin adapts a spherical micelle core shell like structure. Self-assembled fengycin may be a successful antimicrobial compound modifying its action from confined antifungal function. Besides it can open up a new area of research in supramolecular lipopeptide based compound making. This can revealed the mode of action of this unique self-assembled structure to fully evaluate its potential for use as an antimicrobial drug to control the emergence of bacterial infection.
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Affiliation(s)
- Anupam Roy
- Central Research Facility, Indian Institute of Technology Kharagpur Kharagpur, India
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