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Quintana Soares Lopes L, Fortes Guerim PH, Maldonado ME, Wagner R, Hadlich Xavier AC, Gutknecht da Silva JL, Bittencourt da Rosa Leal D, de Freitas Daudt N, Christ Vianna Santos R, Kolling Marquezan P. Chemical composition, cytotoxicity, antimicrobial, antibiofilm, and anti-quorum sensing potential of Mentha Piperita essential oil against the oral pathogen Streptococcus mutans. JOURNAL OF TOXICOLOGY AND ENVIRONMENTAL HEALTH. PART A 2024; 87:824-835. [PMID: 38984907 DOI: 10.1080/15287394.2024.2375731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/11/2024]
Abstract
Dental caries is a highly prevalent oral disease affecting billions of individuals globally. The disease occurs chemically as a result of breakdown of the tooth surface attributed to metabolic activity in colonizing biofilm. Biofilms, composed of exopolysaccharides and proteins, protect bacteria like Streptococcus mutans, which is notable for its role in tooth decay due to its acid-producing abilities. While various antimicrobial agents may prevent biofilm formation, these drugs often produce side effects including enamel erosion and taste disturbances. This study aimed to examine utilization of the Mentha piperita essential oil as a potential antibiofilm activity agent against S. mutans. M. piperita oil significantly (1) reduced bacterial biofilm, (2) exhibited a synergistic effect when combined with chlorhexidine, and (3) did not induce cell toxicity. Chemical analysis identified the essential oil with 99.99% certainty, revealing menthol and menthone as the primary components, constituting approximately 42% and 26%, respectively. Further, M. piperita oil eradicated preformed biofilms and inhibited biofilm formation at sub-inhibitory concentrations. M. piperita oil also interfered with bacterial quorum sensing communication and did not produce any apparent cell toxicity in immortalized human keratinocytes (HaCaT). M. piperita represented an alternative substance for combating S. mutans and biofilm formation and a potential combination option with chlorhexidine to minimize side effects. An in-situ performance assessment requires further studies.
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Affiliation(s)
- Leonardo Quintana Soares Lopes
- Department of Microbiology and Parasitology, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
- Laboratory of Oral Microbiology Research, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Pedro Henrique Fortes Guerim
- Department of Microbiology and Parasitology, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
- Laboratory of Oral Microbiology Research, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Maria Eduarda Maldonado
- Department of Microbiology and Parasitology, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
- Laboratory of Oral Microbiology Research, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Roger Wagner
- Department of Food Science and Technology, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul State, Brazil
| | - Ana Carolina Hadlich Xavier
- Department of Food Science and Technology, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul State, Brazil
| | - Jean Lucas Gutknecht da Silva
- Laboratory of Experimental and Applied Immunobiology, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Daniella Bittencourt da Rosa Leal
- Department of Microbiology and Parasitology, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
- Laboratory of Experimental and Applied Immunobiology, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Natália de Freitas Daudt
- Department of Microbiology and Parasitology, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Roberto Christ Vianna Santos
- Department of Microbiology and Parasitology, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
| | - Patrícia Kolling Marquezan
- Department of Microbiology and Parasitology, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
- Laboratory of Oral Microbiology Research, Universidade Federal de Santa Maria, Santa Maria, Rio Grande do Sul, Brazil
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El-Zawawy NA, Kenawy ER, Ahmed S, El-Sapagh S. Bioproduction and optimization of newly characterized melanin pigment from Streptomyces djakartensis NSS-3 with its anticancer, antimicrobial, and radioprotective properties. Microb Cell Fact 2024; 23:23. [PMID: 38229042 DOI: 10.1186/s12934-023-02276-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2023] [Accepted: 12/15/2023] [Indexed: 01/18/2024] Open
Abstract
BACKGROUND Melanin is a natural pigment that is considered a promising biomaterial for numerous biotechnological applications across several industries. Melanin has biomedical applications as antimicrobial, anticancer, and antioxidant properties. Additionally, in the pharmaceutical and cosmetic industries, it is used in drug delivery and as a radioprotective agent. Also, melanin has environmental uses in the fields of bioremediation and the food industry. The biosynthesis of melanin pigment is an area of interest for researchers due to its multifunctionality, high compatibility, and biodegradability. Therefore, our present work is the first attempt to characterize and optimize the productivity of melanin pigment from Streptomyces djakartensis NSS-3 concerning its radioprotection and biological properties. RESULTS Forty isolates of soil actinobacteria were isolated from the Wadi Allaqui Biosphere Reserve, Egypt. Only one isolate, ACT3, produced a dark brown melanin pigment extracellularly. This isolate was identified according to phenotypic properties and molecular phylogenetic analysis as Streptomyces djakartensis NSS-3 with accession number OP912881. Plackett-Burman experimental design (PBD) and response surface methodology (RSM) using a Box-Behnken design (BBD) were performed for optimum medium and culturing conditions for maximum pigment production, resulting in a 4.19-fold improvement in melanin production (118.73 mg/10 mL). The extracted melanin pigment was purified and characterized as belonging to nitrogen-free pyomelanin based on ultraviolet-visible spectrophotometry (UV-VIS), Fourier transform infrared (FT-IR), Raman spectroscopy, scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX), and NMR studies. Purified melanin demonstrated potent scavenging activity with IC50 values of 18.03 µg/mL and revealed high potency as sunscreens (in vitro SPF = 18.5). Moreover, it showed a nontoxic effect on a normal cell line (WI38), while it had a concentration-dependent anticancer effect on HCT116, HEPG, and MCF7 cell lines with IC50 = 108.9, 43.83, and 81.99 µg/mL, respectively. Also, purified melanin had a detrimental effect on the tested MDR bacterial strains, of which PA-09 and SA-04 were clearly more susceptible to melanin compared with other strains with MICs of 6.25 and 25 µg/mL, respectively. CONCLUSION Our results demonstrated that the newly characterized pyomelanin from Streptomyces djakartensis NSS-3 has valuable biological properties due to its potential photoprotective, antioxidant, anticancer, antimicrobial, and lack of cytotoxic activities, which open up new prospects for using this natural melanin pigment in various biotechnological applications and avoiding chemical-based drugs.
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Affiliation(s)
- Nessma A El-Zawawy
- Department of Botany and Microbiology, Faculty of Science, Tanta University, Tanta, Egypt.
| | - El-Refaie Kenawy
- Chemistry Department, Polymer Research Unit, Faculty of Science, Tanta University, Tanta, Egypt
| | - Sara Ahmed
- Department of Botany and Microbiology, Faculty of Science, Tanta University, Tanta, Egypt
| | - Shimaa El-Sapagh
- Department of Botany and Microbiology, Faculty of Science, Tanta University, Tanta, Egypt
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Khan MA, Shahid M, Celik I, Khan HM, Shahzad A, Husain FM, Adil M. Attenuation of quorum sensing regulated virulence functions and biofilm of pathogenic bacteria by medicinal plant Artemisia annua and its phytoconstituent 1, 8-cineole. Microsc Res Tech 2024; 87:133-148. [PMID: 37728140 DOI: 10.1002/jemt.24418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2023] [Revised: 07/26/2023] [Accepted: 09/03/2023] [Indexed: 09/21/2023]
Abstract
The emergence of multidrug resistance (MDR) in bacterial pathogens is a serious public health concern. A significant therapeutic target for MDR infections is the quorum sensing-regulated bacterial pathogenicity. Determining the anti-quorum sensing abilities of certain medicinal plants against bacterial pathogens as well as the in-silico interactions of particular bioactive phytocompounds with QS and biofilm-associated proteins were the objectives of the present study. In this study, 6 medicinal plants were selected based on their ethnopharmacological usage, screened for Anti-QS activity and Artemisia annua leaf extract (AALE) demonstrated pigment inhibitory activity against Chromobacterium violaceum CV12472. Further, the methanol active fraction significantly inhibited the virulence factors (pyocyanin, pyoverdine, rhamnolipid and swarming motility) of Pseudomonas aeruginosa PAO1 and Serratia marcescens MTCC 97 at respective sub-MICs. The inhibition of biofilm was determined using a microtiter plate test and scanning electron microscopy. Biofilm formation was impaired by 70%, 72% and 74% in P. aeruginosa, C. violaceum and S. marcescens, respectively at 0.5xMIC of the extract. The phytochemical content of the extract was studied using GC-MS and 1, 8-cineole was identified as major bioactive compound. Furthermore, 1, 8-cineole was docked with quorum sensing (QS) proteins (LasI, LasR, CviR, and rhlR) and biofilm proteins (PilY1 and PilT). In silico docking and dynamics simulations studies suggested interactions with QS-receptors CviR', LasI, LasR, and biofilm proteins PilY1, PilT for anti-QS activity. Further, 1, 8-cineole demonstrated 66% and 51% reduction in violacein production and biofilm formation, respectively to validate the findings of computational analysis. Findings of the present investigation suggests that 1, 8-cineole plays a crucial role in the QS and biofilm inhibitory activity demonstrated by Artemisia annua extract. RESEARCH HIGHLIGHTS: Artemisia annua leaf extract (AALE) methanol fraction demonstrated broad-spectrum QS and biofilm inhibition Scanning electron microscopy (SEM) confirmed biofilm inhibition Molecular docking and simulation studies suggested positive interactions of 1,8-cineol with QS-receptors and biofilm proteins.
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Affiliation(s)
- Mo Ahamad Khan
- Department of Microbiology, Faculty of Medicine, Aligarh Muslim University, Aligarh, India
| | - Mohammad Shahid
- Department of Microbiology, Immunology and Infectious Diseases, College of Medicine and Medical Science, Arabian Gulf University, Manama, Bahrain
| | - Ismail Celik
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Erciyes University, Kayseri, Turkey
| | - Haris M Khan
- Department of Microbiology, Faculty of Medicine, Aligarh Muslim University, Aligarh, India
| | - Anwar Shahzad
- Department of Botany, Faculty of Life Science, Aligarh Muslim University, Aligarh, India
| | - Fohad Mabood Husain
- Department of Food Science and Nutrition, College of Food and Agriculture Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Mohd Adil
- Department of Environmental Sciences, Dalhousie University, Truro, Nova Scotia, Canada
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Padayao MHR, Padayao FRP, Patalinghug JM, Raña GS, Yee J, Geraldino PJ, Quilantang N. Antimicrobial and quorum sensing inhibitory activity of epiphytic bacteria isolated from the red alga Halymenia durvillei. Access Microbiol 2023; 5:000563.v4. [PMID: 38188234 PMCID: PMC10765052 DOI: 10.1099/acmi.0.000563.v4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2023] [Accepted: 11/10/2023] [Indexed: 01/09/2024] Open
Abstract
Halymenia durvillei is a red alga that is commonly utilized in the Philippines as food and as a source of high-value natural products for industrial applications. However, there are no studies regarding the microbial community associated with H. durvillei and its potential applications. This study aimed to isolate and identify the epiphytic bacteria of H. durvillei and determine their antimicrobial and quorum sensing inhibitory (QSI) effects. The thalli of H. durvillei were collected at the shores of Santa Fe, Bantayan, Cebu, Philippines. Bacterial isolates were identified using 16S rRNA, and their ethyl acetate (EtOAc) extracts were subjected to antimicrobial susceptibility tests against representative species of yeast and Gram-negative and Gram-positive bacteria. Their QSI activity against Chromobacterium violaceum was also determined. Fourteen distinct bacterial colonies belonging to four genera, namely Alteromonas (3), Bacillus (5), Oceanobacillus (1) and Vibrio (5), were successfully isolated and identified. All 14 bacterial isolates exhibited antibacterial effects. EPB9, identified as Bacillus safensis , consistently showed the strongest inhibition against Escherichia coli , Staphylococcus aureus and Staphylococcus epidermidis , with minimum inhibitory concentrations (MICs) ranging from 0.0625 to 1.0 mg ml-1. In contrast, all 14 isolates showed weak antifungal effects. Both B. safensis (EPB9) and Bacillus australimaris (EPB15) exhibited QSI effects at 100 mg ml-1, showing opaque zones of 3.1±0.9 and 3.8±0.4 mm, respectively. This study is the first to isolate and identify the distinct microbial epiphytic bacterial community of H. durvillei and its potential as an abundant resource for new antibacterial and QSI bioactives.
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Affiliation(s)
- Mary Hannah Rose Padayao
- Applied Microbiology and Molecular Biology Laboratory, Department of Biology, University of San Carlos, Cebu City 6000, Philippines
- Tuklas Lunas Development Center, University of San Carlos, Cebu City 6000, Philippines
| | - Francis Reuben Paul Padayao
- Applied Microbiology and Molecular Biology Laboratory, Department of Biology, University of San Carlos, Cebu City 6000, Philippines
| | - Jenny Marie Patalinghug
- Applied Microbiology and Molecular Biology Laboratory, Department of Biology, University of San Carlos, Cebu City 6000, Philippines
| | - Gem Stephen Raña
- Applied Microbiology and Molecular Biology Laboratory, Department of Biology, University of San Carlos, Cebu City 6000, Philippines
| | - Jonie Yee
- Applied Microbiology and Molecular Biology Laboratory, Department of Biology, University of San Carlos, Cebu City 6000, Philippines
- Tuklas Lunas Development Center, University of San Carlos, Cebu City 6000, Philippines
| | - Paul John Geraldino
- Applied Microbiology and Molecular Biology Laboratory, Department of Biology, University of San Carlos, Cebu City 6000, Philippines
- Tuklas Lunas Development Center, University of San Carlos, Cebu City 6000, Philippines
| | - Norman Quilantang
- Applied Microbiology and Molecular Biology Laboratory, Department of Biology, University of San Carlos, Cebu City 6000, Philippines
- Tuklas Lunas Development Center, University of San Carlos, Cebu City 6000, Philippines
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Zafar F, Shahid M, Fatima H, Riaz M, Anjum F, Mushtaq Z, Zia S, Jahangir MM, Aslam MA. Antibiofilm and Quorum Sensing Inhibition (QSI) Potential of Lagerstroemia speciosa Leaves Extract. Dose Response 2022; 20:15593258221132080. [PMID: 36262717 PMCID: PMC9575460 DOI: 10.1177/15593258221132080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 08/15/2022] [Accepted: 09/22/2022] [Indexed: 11/17/2022] Open
Abstract
Disruption of quorum sensing pathway of pathogenic microbes is considered as
novel approach to fight against infectious diseases. The current study was
planned to evaluate the antibiofilm and quorum sensing inhibitory potential of
Lagerstroemia speciosa. Antibacterial and antibiofilm
potential of L. speciosa extracts was determined through agar
well diffusion and crystal violet assay against sinusitis isolates, that is,
Staphylococcus aureus, Enterococcus faecalis, Proteus mirabilis, and
Klebsiella pneumoniae, while quorum sensing inhibition efficacy of
L. speciosa extracts was determined through violacein
inhibition assay using Chromobacterium pseudoviolaceum as
bacterial model. The methanolic extract of L.
speciosa presented the highest antimicrobial activity against
E. faecalis and antibiofilm activity against K.
pneumoniae (77.42 ± 1.51%), while
n-hexane extract was found to be least active against all
tested bacterial strains. Quorum sensing inhibition activity of
L. speciosa extracts against C.
pseudoviolaceum showed significant dose-dependent inhibition in
violacein production by different concentrations of methanolic extract.
Furthermore, none of the extracts of L. speciosa showed any
hemolytic activity against human RBCs and hold considerable thrombolytic
potential in comparison to streptokinase (75.9 ± .46%). In conclusion, findings
suggest that L. speciosa leaves are excellent source of
phytochemicals with potent antibiofilm and quorum sensing inhibition
potential.
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Affiliation(s)
- Farzana Zafar
- Department of Biochemistry,
University
of Agriculture, Faisalabad,
Pakistan
| | - Muhammad Shahid
- Department of Biochemistry,
University
of Agriculture, Faisalabad,
Pakistan,Muhammad Shahid, Department of
Biochemistry, University of Agriculture, Faisalabad 38000, Pakistan.
| | - Hina Fatima
- Department of Biochemistry,
University
of Agriculture, Faisalabad,
Pakistan,Faculty of Science and Technology,
Department of Basic and Applied Chemistry, University of Central
Punjab, Lahore, Pakistan
| | - Muhammad Riaz
- Department of Allied Health
Sciences, University
of Sargodha, Sargodha, Pakistan
| | - Fozia Anjum
- Government College University
Faisalabad, Faisalabad, Pakistan
| | - Zahid Mushtaq
- Department of Biochemistry,
University
of Agriculture, Faisalabad,
Pakistan
| | - Saadiya Zia
- Department of Biochemistry,
University
of Agriculture, Faisalabad,
Pakistan
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Islam T, Yao F, Kang W, Lu L, Xu B. A systematic study on mycochemical profiles, antioxidant, and anti-inflammatory activities of 30 varieties of Jew’s ear (Auricularia auricula-judae). FOOD SCIENCE AND HUMAN WELLNESS 2022. [DOI: 10.1016/j.fshw.2022.03.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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Xu KZ, Tan XJ, Chang ZY, Li JJ, Jia AQ. 2-tert-Butyl-1,4-benzoquinone, a food additive oxidant, reduces virulence factors of Chromobacterium violaceum. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113569] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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Mathew D, Bhat SG. Statistical design for biogenesis of melanin nanoparticles from producer strain pseudomonas stutzeri BTCZ 109 through taguchi DOE. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2022. [DOI: 10.1016/j.bcab.2022.102366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Improvement in Violacein Production by Utilizing Formic Acid to Induce Quorum Sensing in Chromobacterium violaceum. Antioxidants (Basel) 2022; 11:antiox11050849. [PMID: 35624712 PMCID: PMC9137503 DOI: 10.3390/antiox11050849] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 04/20/2022] [Accepted: 04/25/2022] [Indexed: 11/20/2022] Open
Abstract
Violacein has attracted increasing attention due to its various biological activities, such as antibacterial, antifungal, antioxidative, and antitumor effects. To improve violacein production, formic acid (FA) was added to a culture medium, which resulted in a 20% increase (1.02 g/L) compared to the no-FA-addition group (0.85 g/L). The use of a stirred-tank bioreactor system also improved violacein production (by 0.56 g/L). A quorum-sensing (QS)-related gene (cviI) was induced by FA treatment, which revealed that the mechanism induced by FA utilized regulation of the cviI gene to induce the vio gene cluster for violacein production. To analyze the antioxidative properties of the violacein produced, 2,2-diphenyl-1-picryl-hydrazyl-hydrate (DPPH) and 2,2′-azinobis-(3-ethylbenzthiazoline-6-sulphonic acid) (ABTS) scavenging tests were conducted, and results reveal that the values of the 50% inhibitory concentration (IC50) of DPPH and ABTS were 0.286 and 0.182 g/L, respectively. Violacein also showed strong inhibitory activity against Gram-positive bacteria (Staphylococcus aureus and Bacillus subtilis). In summary, this study found that the addition of formic acid can promote QS of Chromobacterium violaceum, thereby promoting the synthesis of violacein. Subsequently, the promoting effect was also evaluated in a bioreactor system. These findings will be helpful in establishing an economically beneficial production model for violacein in future work.
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Targeting Acyl Homoserine Lactones (AHLs) by the quorum quenching bacterial strains to control biofilm formation in Pseudomonas aeruginosa. Saudi J Biol Sci 2022; 29:1673-1682. [PMID: 35280554 PMCID: PMC8913397 DOI: 10.1016/j.sjbs.2021.10.064] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 10/19/2021] [Accepted: 10/25/2021] [Indexed: 01/12/2023] Open
Abstract
Navigating novel biological strategies to mitigate bacterial biofilms have great worth to combat bacterial infections. Bacterial infections caused by the biofilm forming bacteria are 1000 times more resistant to antibiotics than the planktonic bacteria. Among the known bacterial infections, more than 70% involve biofilms which severely complicates treatment options. Biofilm formation is mainly regulated by the Quorum sensing (QS) mechanism. Interference with the QS system by the quorum quenching (QQ) enzyme is a potent strategy to mitigate biofilm. In this study, bacterial strains with QQ activity were identified and their anti-biofilm potential was investigated against the Multidrug Resistant (MDR) Pseudomonas aeruginosa. A Chromobacterium violaceum CV026 and Agrobacterium tumefaciens A136-based bioassays were used to confirm the degradation of different Acyl Homoserine Lactones (AHLs) by QQ isolates. The 16S rRNA gene sequencing of the isolated strains identified them as Bacillus cereus strain QSP03, B. subtilis strain QSP10, Pseudomonas putida strain QQ3 and P. aeruginosa strain QSP01. Biofilm mitigation potential of QQ isolates was tested against MDR P. aeruginosa and the results suggested that 50% biofilm reduction was observed by QQ3 and QSP01 strains, and around 60% reduction by QSP10 and QSP03 bacterial isolates. The presence of AHL degrading enzymes, lactonases and acylases, was confirmed by PCR based screening and sequencing of the already annotated genes aiiA, pvdQ and quiP. Altogether, these results exhibit that QQ bacterial strains or their products could be useful to control biofilm formation in P.aeruginosa.
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Dai C, Lin J, Li H, Shen Z, Wang Y, Velkov T, Shen J. The Natural Product Curcumin as an Antibacterial Agent: Current Achievements and Problems. Antioxidants (Basel) 2022; 11:459. [PMID: 35326110 PMCID: PMC8944601 DOI: 10.3390/antiox11030459] [Citation(s) in RCA: 49] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2022] [Revised: 02/21/2022] [Accepted: 02/22/2022] [Indexed: 02/04/2023] Open
Abstract
The rapid spread of antibiotic resistance and lack of effective drugs for treating infections caused by multi-drug resistant bacteria in animal and human medicine have forced us to find new antibacterial strategies. Natural products have served as powerful therapeutics against bacterial infection and are still an important source for the discovery of novel antibacterial drugs. Curcumin, an important constituent of turmeric, is considered safe for oral consumption to treat bacterial infections. Many studies showed that curcumin exhibited antibacterial activities against Gram-negative and Gram-positive bacteria. The antibacterial action of curcumin involves the disruption of the bacterial membrane, inhibition of the production of bacterial virulence factors and biofilm formation, and the induction of oxidative stress. These characteristics also contribute to explain how curcumin acts a broad-spectrum antibacterial adjuvant, which was evidenced by the markedly additive or synergistical effects with various types of conventional antibiotics or non-antibiotic compounds. In this review, we summarize the antibacterial properties, underlying molecular mechanism of curcumin, and discuss its combination use, nano-formulations, safety, and current challenges towards development as an antibacterial agent. We hope that this review provides valuable insight, stimulates broader discussions, and spurs further developments around this promising natural product.
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Affiliation(s)
- Chongshan Dai
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China; (J.L.); (Z.S.); (Y.W.)
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Jiahao Lin
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China; (J.L.); (Z.S.); (Y.W.)
| | - Hui Li
- Beijing Key Laboratory of Diagnostic and Traceability Technologies for Food Poisoning, Beijing Center for Disease Prevention and Control, Beijing 100193, China;
| | - Zhangqi Shen
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China; (J.L.); (Z.S.); (Y.W.)
| | - Yang Wang
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China; (J.L.); (Z.S.); (Y.W.)
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Tony Velkov
- Department of Pharmacology & Therapeutics, School of Biomedical Sciences, Faculty of Medicine, Dentistry and Health Sciences, The University of Melbourne, Parkville, VIC 3010, Australia
| | - Jianzhong Shen
- Department of Veterinary Pharmacology and Toxicology, College of Veterinary Medicine, China Agricultural University, No. 2 Yuanmingyuan West Road, Beijing 100193, China; (J.L.); (Z.S.); (Y.W.)
- Beijing Key Laboratory of Detection Technology for Animal-Derived Food Safety, College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
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inPOSE: A Flexible Toolbox for Chromosomal Cloning and Amplification of Bacterial Transgenes. Microorganisms 2022; 10:microorganisms10020236. [PMID: 35208691 PMCID: PMC8875745 DOI: 10.3390/microorganisms10020236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 01/14/2022] [Accepted: 01/18/2022] [Indexed: 12/10/2022] Open
Abstract
Cloning the genes and operons encoding heterologous functions in bacterial hosts is now almost exclusively carried out using plasmid vectors. This has multiple drawbacks, including the need for constant selection and variation in copy numbers. The chromosomal integration of transgenes has always offered a viable alternative; however, to date, it has been of limited use due to its tedious nature and often being limited to a single copy. We introduce here a strategy that uses bacterial insertion sequences, which are the simplest autonomous transposable elements to insert and amplify genetic cargo into a bacterial chromosome. Transgene insertion can take place either as transposition or homologous recombination, and copy number amplification is achieved using controlled copy-paste transposition. We display the successful use of IS1 and IS3 for this purpose in Escherichia coli cells using various selection markers. We demonstrate the insertion of selectable genes, an unselectable gene and a five-gene operon in up to two copies in a single step. We continue with the amplification of the inserted cassette to double-digit copy numbers within two rounds of transposase induction and selection. Finally, we analyze the stability of the cloned genetic constructs in the lack of selection and find it to be superior to all investigated plasmid-based systems. Due to the ubiquitous nature of transposable elements, we believe that with proper design, this strategy can be adapted to numerous other bacterial species.
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Petrovic J, Fernandes Â, Stojković D, Soković M, Barros L, Ferreira I, Shekhar A, Glamočlija J. A Step Forward Towards Exploring Nutritional and Biological Potential of Mushrooms: A Case Study of Calocybe gambosa (Fr.) Donk Wild Growing in Serbia. POL J FOOD NUTR SCI 2022. [DOI: 10.31883/pjfns/144836] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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14
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Wang Y, Zheng Q, Li L, Pan L, Zhu H. Anti-Quorum-Sensing Activity of Tryptophan-Containing Cyclic Dipeptides. Mar Drugs 2022; 20:md20020085. [PMID: 35200615 PMCID: PMC8924889 DOI: 10.3390/md20020085] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/16/2022] [Accepted: 01/17/2022] [Indexed: 02/04/2023] Open
Abstract
Quorum sensing (QS) can regulate the pathogenicity of bacteria and the production of some virulence factors. It is a promising target for screening to find anti-virulence agents in the coming post-antibiotics era. Cyclo (L-Trp-L-Ser), one variety of cyclic dipeptides (CDPs), isolated from a marine bacterium Rheinheimera aquimaris, exhibited anti-QS activity against Chromobacterium violaceum CV026 and Pseudomonas aeruginosa PAO1. Unlike the CDPs composed of phenylalanine or tyrosine, the anti-QS activity has been widely studied; however, cyclo (L-Trp-L-Ser) and derivatives, containing one tryptophan unit and one non-aromatic amino acid, have not been systematically explored. Herein, the cyclo (L-Trp-L-Ser) and seven derivatives were synthesized and evaluated. All tryptophane-contained CDPs were able to decrease the production of violacein in C.violaceum CV026 and predicted as binding within the same pocket of receptor protein CviR, but in lower binding energy compared with the natural ligand C6HSL. As for P. aeruginosa PAO1, owning more complicated QS systems, these CDPs also exhibited inhibitory effects on pyocyanin production, swimming motility, biofilm formation, and adhesion. These investigations suggested a promising way to keep the tryptophan untouched and make modifications on the non-aromatic unit to increase the anti-QS activity and decrease the cytotoxicity, thus developing a novel CDP-based anti-virulence agent.
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15
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Yang J, Zhou T, Huang L, Chen B, Jiang Y. Anti-obesity effect of Auricularia heimuer fruiting body alcohol extraction on obese mice and crucial metabolite pathway analysis by liquid chromatography-tandem mass spectrometry. J Food Biochem 2021; 46:e14002. [PMID: 34850407 DOI: 10.1111/jfbc.14002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2021] [Revised: 10/23/2021] [Accepted: 10/29/2021] [Indexed: 01/04/2023]
Abstract
In recent years, the increasing obese and overweight population has become a worldwide public health problem, as there is no effective medication to control obesity. Auricularia heimuer is rich in active substances that have potential biologically active functions. The anti-obesity effect and mechanism of Auricularia heimuer fruiting body alcohol extraction (AHA, 150-600 mg/kg·bw) was investigated in obese mice by assessing changes in endogenous liver metabolites using a liquid chromatography-tandem mass spectrometry approach. The aim of this study was to identify an effective food to control human obesity. AHA of 600 mg/kg·bw (HC) significantly decreased body weight and improved serum biochemistry indices. Sixty-eight liver metabolites were identified and significantly separated among the normal, high-fat diet (HFD), and HC groups. Moreover, the metabolic analysis revealed that HC significantly regulated specific metabolites in mice including amino acids, lipids, and carbohydrate compounds. Kyoto Encyclopedia of Genes and Genomes enrichment analysis revealed that HC was significantly involved in different metabolite pathways including arachidonic acid metabolism, galactose metabolism, carbohydrate digestion and absorption, linoleic acid metabolism, and starch and sucrose metabolism. Eight weeks after supplementing with HC, major metabolites in related pathways that were disrupted by an HFD were restored to normal levels, suggesting that HC had anti-obesity activity.
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Affiliation(s)
- Juan Yang
- College of Food Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Tianfeng Zhou
- College of Food Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Linxiang Huang
- College of Food Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Bingzhi Chen
- College of Food Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
| | - Yuji Jiang
- College of Food Sciences, Fujian Agriculture and Forestry University, Fuzhou, China
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16
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Kamli MR, Malik MA, Srivastava V, Sabir JSM, Mattar EH, Ahmad A. Biogenic ZnO Nanoparticles Synthesized from Origanum vulgare Abrogates Quorum Sensing and Biofilm Formation in Opportunistic Pathogen Chromobacterium violaceum. Pharmaceutics 2021; 13:1743. [PMID: 34834158 PMCID: PMC8625425 DOI: 10.3390/pharmaceutics13111743] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 10/14/2021] [Accepted: 10/16/2021] [Indexed: 12/23/2022] Open
Abstract
This study presents an inexpensive, eco-friendly, and simple green synthesis of ZnO nanoparticles using Origanum vulgare extract. These nanoparticles are non-hazardous, environmentally friendly, and cheaper than other methods of biosynthesis. Ongoing research determines the role of phytochemicals in the fabrication and biosynthesis of ZnO NPs and their role in antibacterial activity and biomedical applications. Characterizations by fourier transform infrared spectroscopy (FTIR), diffuse reflectance UV-visible spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) determine the successful biosynthesis of ZnO NPs. Meanwhile, TEM and X-ray diffraction studies approximated the spherical morphology and crystalline nature of biosynthesized ZnO NPs of nano size in the range of 20-30 nm. The global increase in drug resistance necessitates the search for new drugs with different mechanisms of action. Quorum sensing (QS), a cell-to-cell communication, has gained attention as an emerging drug target. It controls numerous biochemical processes in bacteria, which are essential for their survival and pathogenicity. The potential of nanomedicines has also been tested to synthesize new antibiotics to tackle drug resistance. ZnO NPs were explored for their antibacterial, antiquorum sensing, and antibiofilm activities with a bioreporter strain of Chromobacterium violaceum. Susceptibility testing results indicated the potential antibacterial activity of ZnO NPs with a minimum inhibitory concentration (MIC) of 4 µg/mL and minimum bactericidal concentration (MBC) of 16 µg/mL. Antiquorum-sensing assays revealed that these nanoparticles inhibit quorum sensing with minimum antiquorum sensing activity (MQSIC) of 1 µg/mL, without causing any bacterial growth inhibition. In addition, ZnO NPs inhibit biofilm formation at inhibitory and higher concentrations. RT-qPCR results supported the downregulation of the quorum sensing genes when C. violaceum was treated with ZnO NPs. The outcomes of this study are promising with regard to the biofilm and quorum sensing, emphasizing the potential applications of ZnO NPs against bacterial communication and biofilm formation.
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Affiliation(s)
- Majid Rasool Kamli
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (J.S.M.S.); (E.H.M.)
- Center of Excellence in Bionanoscience Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Maqsood Ahmad Malik
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Vartika Srivastava
- Clinical Microbiology and Infectious Diseases, School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2193, South Africa; (V.S.); (A.A.)
| | - Jamal S. M. Sabir
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (J.S.M.S.); (E.H.M.)
- Center of Excellence in Bionanoscience Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia
| | - Ehab H. Mattar
- Department of Biological Sciences, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (J.S.M.S.); (E.H.M.)
| | - Aijaz Ahmad
- Clinical Microbiology and Infectious Diseases, School of Pathology, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg 2193, South Africa; (V.S.); (A.A.)
- Infection Control Unit, Charlotte Maxeke Johannesburg Academic Hospital, National Health Laboratory Service, Johannesburg 2193, South Africa
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17
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Shaheer P, Sreejith VN, Joseph TC, Murugadas V, Lalitha KV. Quorum quenching Bacillus spp.: an alternative biocontrol agent for Vibrio harveyi infection in aquaculture. DISEASES OF AQUATIC ORGANISMS 2021; 146:117-128. [PMID: 34617517 DOI: 10.3354/dao03619] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Quorum sensing (QS) is a type of cell to cell communication in bacteria that can also regulate the virulence potential in pathogenic strains. Hence, QS disruption, i.e. the quorum quenching (QQ) mechanism, is presently being explored as a novel bio-control strategy to counter bacterial infections. In the present study, we characterized the QQ ability of Bacillus spp. strains to reduce the expression of some virulence factors of a shrimp pathogen, Vibrio harveyi. We screened a total of 118 spore-forming bacterial isolates from aquaculture ponds and mangrove soil for their ability to degrade the synthetic N-acyl-homoserine lactones (AHLs) C4-HSL, C6-HSL, C8-HSL, and C10-HSL. We then selected the top 17 isolates with high AHL-degradation ability for further study. Among them, B. subtilis MFB10, B. lentus MFB2, and B. firmus MFB7 had the highest ability for degradation. These 3 isolates suppressed the expression of virulence genes encoding protease, lipase, phospholipase, caseinase, chitinase, and gelatinase, and potentially inhibited the biofilm formation of V. harveyi MFB32. The reduction in expression of virulence genes like those coding for metalloprotease, serine protease, and haemolysin were confirmed by real-time PCR analysis. Moreover, in an in vivo challenge experiment, these Bacillus spp. protected Penaeus monodon post-larvae against V. harveyi MFB3 infection. Our results demonstrate the potential application of AHL-degrading Bacillus spp. as an alternative to antibiotics in shrimp hatcheries to control luminescent vibriosis. This novel bio-therapeutic method is a promising approach towards disease control in shrimp aquaculture.
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Affiliation(s)
- P Shaheer
- Microbiology Fermentation and Biotechnology Division, Central Institute of Fisheries Technology (CIFT), Matsyapuri PO, Cochin 682029, Kerala, India
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18
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Singh S, Bhatia S. Quorum Sensing Inhibitors: Curbing Pathogenic Infections through Inhibition of Bacterial Communication. IRANIAN JOURNAL OF PHARMACEUTICAL RESEARCH : IJPR 2021; 20:486-514. [PMID: 34567177 PMCID: PMC8457738 DOI: 10.22037/ijpr.2020.113470.14318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Currently, most of the developed and developing countries are facing the problem of infectious diseases. The genius way of an exaggerated application of antibiotics led the infectious agents to respond by bringing a regime of persisters to resist antibiotics attacks prolonging their survival. Persisters have the dexterity to communicate among themself using signal molecules via the process of Quorum Sensing (QS), which regulates virulence gene expression and biofilms formation, making them more vulnerable to antibiotic attack. Our review aims at the different approaches applied in the ordeal to solve the riddle for QS inhibitors. QS inhibitors, their origin, structures and key interactions for QS inhibitory activity have been summarized. Solicitation of a potent QS inhibitor molecule would be beneficial, giving new life to the simplest antibiotics in adjuvant therapy.
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Affiliation(s)
- Shaminder Singh
- Regional Centre for Biotechnology, NCR Biotech Science Cluster, 3 Milestone, Faridabad-Gurugram Expressway, Faridabad - 121 001, Haryana, India
| | - Sonam Bhatia
- Department of Pharmaceutical Science, SHALOM Institute of Health and Allied Sciences, Sam Higginbottom University of Agriculture, Technology and Sciences (SHUATS), Naini-211007, Prayagraj, Uttar Pradesh, India
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19
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Exploring the quorum sensing inhibition of isolated chrysin from Penicillium chrysogenum DXY-1. Bioorg Chem 2021; 111:104894. [PMID: 33865054 DOI: 10.1016/j.bioorg.2021.104894] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 03/12/2021] [Accepted: 04/04/2021] [Indexed: 12/21/2022]
Abstract
We recently and for the first time reported that ethyl acetate extracts isolated from Penicillium chrysogenum DXY-1 exhibited anti-quorum sensing (anti-QS) activity. Herein, another active molecule in the extracts was identified as chrysin by NMR and MS. A 20 μg/mL dose of chrysin inhibited violacein production regulated by QS in C. violaceum CV026 by 31.6%. A 40 μg/mL dose of chrysin suppressed pyocyanin production, elastase activity, proteolytic activity, and biofilm formation regulated by QS in P. aeruginosa PA01 by 41.4%, 13.8%, 8.3%, and 42.4%, respectively. And chrysin could inhibit the swarming activity of P. aeruginosa PA01. Further, molecular docking and CD analysis were used to address the mechanism of chrysin's activity in C. violaceum. Molecular docking results revealed that chrysin suppresses QS system by competing with the natural signal molecule C6HSL for binding to the same pocket of CviR receptor. At the same time, CD results also showed that chrysin could change the secondary structure composition of CviR, which greatly prevented the binding of C6HSL/CviR, and further playing its role on inhibiting bacterial QS system. All these data demonstate that chrysin may be used as a potential QS inhibitor to tackle increasing drug resistance.
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20
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Anti-quorum sensing and antibiofilm potential of 1,8-cineole derived from Musa paradisiaca against Pseudomonas aeruginosa strain PAO1. World J Microbiol Biotechnol 2021; 37:66. [PMID: 33740144 DOI: 10.1007/s11274-021-03029-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2020] [Accepted: 03/08/2021] [Indexed: 10/21/2022]
Abstract
Pseudomonas aeruginosa is one of the vulnerable opportunistic pathogens associated with nosocomial infections, cystic fibrosis, burn wounds and surgical site infections. Several studies have reported that quorum sensing (QS) systems are controlled the P. aeruginosa pathogenicity. Hence, the targeting of QS considered as an alternative approach to control P. aeruginosa infections. This study aimed to evaluate the anti-quorum sensing and antibiofilm inhibitory potential of Musa paradisiaca against Chromobacterium violaceum (ATCC 12472) and Pseudomonas aeruginosa. The methanol extract of M. paradisiacsa exhibits that better antibiofilm potential against P. aeruginosa. Then, the crude methanol extract was subjected to purify by column chromatography and collected the fractions. The mass-spectrometric analysis of a methanol extract of M. paradisiaca revealed that 1,8-cineole is the major compounds. 1, 8-cineole significantly inhibited the QS regulated violacein production in C. violaceum. Moreover, 1,8-cineole significantly inhibited the QS mediated virulence production and biofilm formation of P. aeruginosa without affecting their growth. The real-time PCR analysis showed the downregulation of autoinducer synthase and transcriptional regulator genes upon 1,8-cineole treatment. The findings of the present study strongly suggested that metabolite of M. paradisiaca impedes P. aeruginosa QS system and associated virulence productions.
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21
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Khalid S, Keller NP. Chemical signals driving bacterial-fungal interactions. Environ Microbiol 2021; 23:1334-1347. [PMID: 33511714 DOI: 10.1111/1462-2920.15410] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 01/22/2021] [Accepted: 01/25/2021] [Indexed: 12/19/2022]
Abstract
Microorganisms reside in diverse environmental communities where interactions become indispensable due to close physical associations. These interactions are driven by chemical communication among different microbial kingdoms, particularly between fungi and bacteria. Knowledge about these communication signals provides useful information about the nature of microbial interactions and allows predictions of community development in diverse environments. Here, we provide an update on the role of small signalling molecules in fungal-bacterial interactions with focus on agricultural and medicinal environments. This review highlights the range of - and response to - diverse biochemicals produced by both kingdoms with view to harnessing their properties towards drug discovery applications.
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Affiliation(s)
- Saima Khalid
- Department of Microbiology, Women University Mardan, Mardan, Pakistan
| | - Nancy P Keller
- Department of Medical Microbiology and Immunology, University of Wisconsin, Madison, WI, USA.,Department of Bacteriology, University of Wisconsin, Madison, WI, USA
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22
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Roy S, Rhim JW. New insight into melanin for food packaging and biotechnology applications. Crit Rev Food Sci Nutr 2021; 62:4629-4655. [PMID: 33523716 DOI: 10.1080/10408398.2021.1878097] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Melanin is a dark brown to black biomacromolecule with biologically active multifunctional properties that do not have a precise chemical structure, but its structure mainly depends on the polymerization conditions during the synthesis process. Natural melanin can be isolated from various animal, plant, and microbial sources, while synthetic melanin-like compounds can be synthesized by simple polymerization of dopamine. Melanin is widely used in various areas due to its functional properties such as photosensitivity, light barrier property, free radical scavenging ability, antioxidant activity, etc. It also has an excellent ability to act as a reducing agent and capping agent to synthesize various metal nanoparticles. Melanin nanoparticles (MNP) or melanin-like nanoparticles (MLNP) have the unique potential to act as functional materials to improve nanocomposite films' physical and functional properties. Various food packaging and biomedical applications have been made alone or by mixing melanin or MLNP. In this review, the general aspects of melanin that highlight biological activity, along with a description of MNP and the use as nanofillers in packaging films as well as reducing and capping agents and biomedical applications, were comprehensively reviewed.
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Affiliation(s)
- Swarup Roy
- Department of Food and Nutrition, BioNanocomposite Research Center, Kyung Hee University, Seoul, Republic of Korea
| | - Jong-Whan Rhim
- Department of Food and Nutrition, BioNanocomposite Research Center, Kyung Hee University, Seoul, Republic of Korea
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23
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Quorum sensing modulatory and biofilm inhibitory activity of Plectranthus barbatus essential oil: a novel intervention strategy. Arch Microbiol 2021; 203:1767-1778. [PMID: 33474610 DOI: 10.1007/s00203-020-02171-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Revised: 11/07/2020] [Accepted: 12/27/2020] [Indexed: 01/05/2023]
Abstract
The essential oil (EO) from the roots of Plectranthus barbatus Andr. (Syn. Coleus forskohlii Briq.) was evaluated for quorum sensing (QS) inhibitory activity. P. barbatus EO was screened for inhibition of QS regulated violacein production in Chromobacterium violaceum (ATCC 12472) wild-type strain. At inhibitory (6.25% v/v) and sub-inhibitory concentrations (3.125% v/v) of the EO, dose-dependent response in the inhibition of violacein production was observed in C. violaceum. Similarly, sub-MIC (6.25% v/v) of P. barbatus EO disrupted QS regulated biofilm formation by 27.87% and inhibited swarming and twitching motility in Pseudomonas aeruginosa PA01 implying its anti-infective and QS modulatory activity. Fluorescence microscopy studies confirmed the disruption of biofilm formation by EO in P. aeruginosa PAO1. Promising antibacterial activity was recorded at concentrations as low as 3.12% v/v for Listeria monocytogenes (ATCC 13932) and at 6.25% v/v for both Salmonella enterica subsp. enterica serovar Typhimurium (ATCC 25241) and Escherichia coli (ATCC 11775). Furthermore, significant dose-dependent inhibition was observed for biofilm formation and motility in all the tested pathogens in different treated concentrations. GC-MS analysis revealed α-pinene, endo-borneol, bornyl acetate, 1-Hexyl-2-Nitrocyclohexane as the major phytoconstituents. P. barbatus EO or its constituent compounds with QS modulatory, antimicrobial and biofilm inhibitory property could be potential new-age dietary source based intervention and preservation technologies.
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24
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Batohi N, Lone SA, Marimani M, Wani MY, Al-Bogami AS, Ahmad A. Citral and its derivatives inhibit quorum sensing and biofilm formation in Chromobacterium violaceum. Arch Microbiol 2021; 203:1451-1459. [PMID: 33392626 DOI: 10.1007/s00203-020-02127-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 10/25/2020] [Accepted: 11/18/2020] [Indexed: 01/28/2023]
Abstract
With an upsurge in multidrug resistant bacteria backed by biofilm defence armours, there is a desperate need of new antibiotics with a non-traditional mechanism of action. Targeting bacteria by misguiding them or halting their communication is a new approach that could offer a new way to combat the multidrug resistance problem. Quorum sensing is considered to be the achilles heel of bacteria that has a lot to offer. Since, both quorum sensing and biofilm formation have been related to drug resistance and pathogenicity, in this study we synthesised new derivatives of citral with antiquorum sensing and biofilm disrupting properties. We previously reported antimicrobial and antiquorum sensing activity of citral and herein we report the synthesis and evaluation of citral and its derivatives (CD1-CD3) for antibacterial, antibiofilm and antiquorum sensing potential against Chromobacterium violaceum using standard methods. Preliminary results revealed that CD1 is the most active of all the derivatives. Qualitative and quantitative evaluation of antiquorum sensing activity at sub-inhibitory concentrations of these compounds also revealed high activity for CD1 followed by CD2, CD3 and citral. These compounds also inhibit biofilm formation at subinhibitory concentrations without causing any bacterial growth inhibition. These results were replicated by RT-qPCR with down regulation of the quorum sensing genes when C. violaceum was treated with these test compounds. Overall, the results are quite encouraging, revealing that biofilm and quorum sensing are interrelated processes and also indicating the potential of these derivatives to impede bacterial communication and biofilm formation.
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Affiliation(s)
- Nikayla Batohi
- Clinical Microbiology and Infectious Diseases, School of Pathology, Health Sciences, University of the Witwatersrand, Johannesburg, 2193, South Africa
| | - Shabir Ahmad Lone
- Clinical Microbiology and Infectious Diseases, School of Pathology, Health Sciences, University of the Witwatersrand, Johannesburg, 2193, South Africa
| | - Musa Marimani
- Anatomical Pathology, School of Pathology, Health Sciences, University of the Witwatersrand, Johannesburg, 2193, South Africa
| | - Mohmmad Younus Wani
- Department of Chemistry, College of Science, University of Jeddah, Jeddah, 21589, Kingdom of Saudi Arabia.
| | - Abdullah Saad Al-Bogami
- Department of Chemistry, College of Science, University of Jeddah, Jeddah, 21589, Kingdom of Saudi Arabia
| | - Aijaz Ahmad
- Clinical Microbiology and Infectious Diseases, School of Pathology, Health Sciences, University of the Witwatersrand, Johannesburg, 2193, South Africa. .,Division of Infection Control, Charlotte Maxeke Johannesburg Academic Hospital, National Health Laboratory Service, Johannesburg, 2193, South Africa.
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25
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Lin L, Xu J. Fungal Pigments and Their Roles Associated with Human Health. J Fungi (Basel) 2020; 6:E280. [PMID: 33198121 PMCID: PMC7711509 DOI: 10.3390/jof6040280] [Citation(s) in RCA: 37] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 11/08/2020] [Accepted: 11/09/2020] [Indexed: 12/19/2022] Open
Abstract
Fungi can produce myriad secondary metabolites, including pigments. Some of these pigments play a positive role in human welfare while others are detrimental. This paper reviews the types and biosynthesis of fungal pigments, their relevance to human health, including their interactions with host immunity, and recent progresses in their structure-activity relationships. Fungal pigments are grouped into carotenoids, melanin, polyketides, and azaphilones, etc. These pigments are phylogenetically broadly distributed. While the biosynthetic pathways for some fungal pigments are known, the majority remain to be elucidated. Understanding the genes and metabolic pathways involved in fungal pigment synthesis is essential to genetically manipulate the production of both the types and quantities of specific pigments. A variety of fungal pigments have shown wide-spectrum biological activities, including promising pharmacophores/lead molecules to be developed into health-promoting drugs to treat cancers, cardiovascular disorders, infectious diseases, Alzheimer's diseases, and so on. In addition, the mechanistic elucidation of the interaction of fungal pigments with the host immune system provides valuable clues for fighting fungal infections. The great potential of fungal pigments have opened the avenues for academia and industries ranging from fundamental biology to pharmaceutical development, shedding light on our endeavors for disease prevention and treatment.
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Affiliation(s)
- Lan Lin
- School of Life Science and Technology, Department of Bioengineering, Key Laboratory of Developmental Genes and Human Diseases (MOE), Southeast University, Nanjing 210096, Jiangsu, China;
- Department of Biology, McMaster University, Hamilton, ON L8S 4K1, Canada
| | - Jianping Xu
- Department of Biology, McMaster University, Hamilton, ON L8S 4K1, Canada
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26
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Abdullah, Algburi A, Asghar A, Huang Q, Mustfa W, Javed HU, Zehm S, Chikindas ML. Black cardamom essential oil prevents Escherichia coli O157:H7 and Salmonella Typhimurium JSG 1748 biofilm formation through inhibition of quorum sensing. Journal of Food Science and Technology 2020; 58:3183-3191. [PMID: 34294980 DOI: 10.1007/s13197-020-04821-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 09/15/2020] [Accepted: 09/24/2020] [Indexed: 01/02/2023]
Abstract
This study aimed to investigate the chemical composition, using GC-MS, and anti-biofilm potential of black cardamom essential oil (BCEO) against biofilms of Escherichia coli O157:H7 and Salmonella Typhimurium JSG 1748 through inhibition of bacterial quorum sensing. GC-MS quantification demonstrated that BCEO contains 1,8-cineole (44.24%), α-terpinyl acetate (12.25%), nerolidol (6.03%), and sabinene (5.96%) as the major bioactive compounds. Antioxidant assays for BCEO revealed the total phenolic and flavonoid mean values were 1325.03 ± 7.69 mg GAE 100/g and 168.25 ± 5.26 mg CE/g, respectively. In regards to antimicrobial potential, Candida albicans was the most sensitive species compared to Streptococcus mutans, Staphylococcus aureus, Listeria monocytogenes, Bacillus cereus, and Salmonella Typhimurium with the following zones of inhibition; 14.4 ± 0.52, 13.2 ± 0.42, 11.2 ± 0.28, 11.0 ± 0.52, 8.2 ± 0.24 and 6.6 ± 0.18 mm in diameter, respectively. Biofilm inhibition by BCEO was concentration-dependent, when various concentrations of 0.03, 0.06, 0.12, 0.25 and 0.5% were applied, 33.67, 34.14, 38.66, 46.65 and 50.17% of Salmonella Typhimurium biofilm was inhibited, while 47.31, 54.15, 76.57, 83.36 and 84.63% of Escherichia coli biofilm formation was prevented. Chromobacterium violaceum ATCC 12,472 and its product violacein, was used as a microbial indicator for enhancement or inhibition of quorum sensing. Our data showed that 0.5% of BCEO inhibited violacein production without influencing the growth of Chromobacterium violaceum, while 1% of BCEO, caused 100% inhibtion of violacein production together with 30% inhibition of growth. This study shows that BCEO possesses promising antioxidant and antimicrobial potential, and found anti-biofilm activities linked to the quenching of the quorum sensing system of E. coli and S. Typhimurium.
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Affiliation(s)
- Abdullah
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058 China.,Department of Food Science, Rutgers University, 65 Dudley Road, New Brunswick, NJ 08901 USA
| | - Ammar Algburi
- Department of Food Science, Rutgers University, 65 Dudley Road, New Brunswick, NJ 08901 USA.,Department of Biotechnology, College of Science, University of Diyala, Baqubah, Iraq
| | - Ali Asghar
- National Institute of Food Science and Technology, University of Agriculture Faisalabad, Faisalabad, Pakistan
| | - Qingrong Huang
- Department of Food Science, Rutgers University, 65 Dudley Road, New Brunswick, NJ 08901 USA
| | - Warda Mustfa
- School of Earth and Space Sciences, University of Science and Technology of China, Hefei, 230026 PR China.,University of Narowal, Punjab, Pakistan
| | - Hafiz U Javed
- Department of Plant Sciences, School of Agriculture and Biology, Shanghai Jiaotong University, Shanghai, 200240 China
| | - Saskia Zehm
- Department of Life Sciences and Technology, Beuth University of Applied Sciences, Berlin, Germany
| | - Michael L Chikindas
- Health Promoting Naturals Laboratory, School of Environmental and Biological Sciences, Rutgers State University, 65 Dudley Road, New Brunswick, NJ 08901 USA.,Don State Technical University, Rostov-on-Don, Russia.,I.M. Sechenov First Moscow State Medical University, Moscow, Russia
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Ramasamy M, Nanda SS, Lee JH, Lee J. Construction of Alizarin Conjugated Graphene Oxide Composites for Inhibition of Candida albicans Biofilms. Biomolecules 2020; 10:biom10040565. [PMID: 32272698 PMCID: PMC7226399 DOI: 10.3390/biom10040565] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 04/04/2020] [Accepted: 04/05/2020] [Indexed: 12/14/2022] Open
Abstract
Biofilm inhibition using nanoparticle-based drug carriers has emerged as a noninvasive strategy to eradicate microbial contaminants such as fungus Candida albicans. In this study, one-step adsorption strategy was utilized to conjugate alizarin (AZ) on graphene oxide (GO) and characterized by ultraviolet-visible spectroscopy (UV-Vis), attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR), X-ray powder diffraction (XRD), dynamic light-scattering (DLS), and transmission electron microscopy (TEM). Crystal violet assay was performed to evaluate the antibiofilm efficacy of GO-AZs against C. albicans. Different characterizations disclosed the loading of AZ onto GO. Interestingly, TEM images indicated the abundant loading of AZ by producing a unique inward rolling of GO-AZ sheets as compared to GO. When compared to the nontreatment, GO-AZ at 10 µg/mL significantly reduced biofilm formation to 96% almost equal to the amount of AZ (95%). It appears that the biofilm inhibition is due to the hyphal inhibition of C. albicans. The GO is an interesting nanocarrier for loading AZ and could be applied as a novel antibiofilm agent against various microorganisms including C. albicans.
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Affiliation(s)
- Mohankandhasamy Ramasamy
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Korea; (M.R.); (J.-H.L.)
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, ON N2L 3G1, Canada
| | | | - Jin-Hyung Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Korea; (M.R.); (J.-H.L.)
| | - Jintae Lee
- School of Chemical Engineering, Yeungnam University, Gyeongsan 38541, Korea; (M.R.); (J.-H.L.)
- Correspondence: ; Tel.: +82-53-810-2533; Fax: +82-53-810-4631
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Marine bacteria associated with shallow hydrothermal systems in the Gulf of California with the capacity to produce biofilm inhibiting compounds. Arch Microbiol 2020; 202:1477-1488. [DOI: 10.1007/s00203-020-01851-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 12/09/2019] [Accepted: 03/01/2020] [Indexed: 12/28/2022]
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Camp JE, Nyamini SB, Scott FJ. Cyrene™ is a green alternative to DMSO as a solvent for antibacterial drug discovery against ESKAPE pathogens. RSC Med Chem 2019; 11:111-117. [PMID: 33479610 DOI: 10.1039/c9md00341j] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 08/24/2019] [Indexed: 02/04/2023] Open
Abstract
Dimethyl sulfoxide (DMSO) is currently employed across the biomedical field, from cryopreservation to in vitro assays, despite the fact that it has been shown to have an assortment of biologically relevant effects. The amphiphilic nature of DMSO along with its relatively low toxicity at dilute concentrations make it a challenging solvent to replace. A possible alternative is Cyrene™ (dihydrolevoglucosenone), an aprotic dipolar solvent that is derived from waste biomass. In addition to being a green solvent, Cyrene™ has comparable solvation properties and is reported to have low toxicity. Herein the abilities of the two solvents to solubilize drug compounds and to act as non-participatory vehicles in drug discovery for antibacterials are compared. It was demonstrate that the results of standardised antimicrobial susceptibility testing do not differ between drugs prepared from either Cyrene™ or DMSO stock. Moreover, in contrast to DMSO, Cyrene™ does not offer protection from ROS mediated killing of bacteria and may therefore be an improvement over DMSO as a vehicle in antimicrobial drug discovery.
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Affiliation(s)
- Jason E Camp
- Department of Chemical Sciences , University of Huddersfield , Queensgate , Huddersfield , UK.,Department of Chemistry , University of Bath , Bath , UK
| | - Simbarashe B Nyamini
- Department of Chemical Sciences , University of Huddersfield , Queensgate , Huddersfield , UK
| | - Fraser J Scott
- Department of Pure and Applied Chemistry , University of Strathclyde , Glasgow , Scotland , UK .
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Sindi A, Chawn MVB, Hernandez ME, Green K, Islam MK, Locher C, Hammer K. Anti-biofilm effects and characterisation of the hydrogen peroxide activity of a range of Western Australian honeys compared to Manuka and multifloral honeys. Sci Rep 2019; 9:17666. [PMID: 31776432 PMCID: PMC6881396 DOI: 10.1038/s41598-019-54217-8] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Accepted: 11/06/2019] [Indexed: 12/12/2022] Open
Abstract
The antibacterial activity of honeys derived from the endemic flora of the southwest corner of Western Australia, including the trees Jarrah (Eucalyptus marginata) and Marri (Corymbia calophylla), remains largely unexplored. Investigation of these honeys showed minimum inhibitory concentrations (MICs) of 6.7-28.0% (w/v) against Gram positive and negative bacteria. Honey solutions showed enhanced antibacterial activity after hydrogen peroxide was allowed to accumulate prior to testing, with a mean MIC after accumulation of 14.3% compared to 17.4% before accumulation. Antibacterial activity was reduced after treatment with catalase enzyme, with a mean MIC of 29.4% with catalase compared to 15.2% without catalase. Tests investigating the role of the Gram negative outer membrane in honey susceptibility revealed increases in activity after destabilisation of the outer membrane. Honeys reduced both the formation of biofilm and the production of bacterial pigments, which are both regulated by quorum sensing. However, these reductions were closely correlated with global growth inhibition. Honey applied to existing biofilms resulted in decreased metabolic activity and minor decreases in viability. These results enhance our understanding of the mechanisms of antibacterial action of Jarrah and Marri honeys, and provide further support for the use of honey in the treatment of infected wounds.
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Affiliation(s)
- Azhar Sindi
- School of Biomedical Sciences, The University of Western Australia, Crawley, Western Australia, 6009, Australia
| | - Moses Van Bawi Chawn
- School of Biomedical Sciences, The University of Western Australia, Crawley, Western Australia, 6009, Australia
| | - Magda Escorcia Hernandez
- School of Biomedical Sciences, The University of Western Australia, Crawley, Western Australia, 6009, Australia
| | - Kathryn Green
- School of Biomedical Sciences, The University of Western Australia, Crawley, Western Australia, 6009, Australia.,The Cooperative Research Centre for Honey Bee Products Limited, Western Australia, Australia
| | - Md Khairul Islam
- The Cooperative Research Centre for Honey Bee Products Limited, Western Australia, Australia.,School of Allied Health, The University of Western Australia, Crawley, Western Australia, 6009, Australia
| | - Cornelia Locher
- The Cooperative Research Centre for Honey Bee Products Limited, Western Australia, Australia.,School of Allied Health, The University of Western Australia, Crawley, Western Australia, 6009, Australia
| | - Katherine Hammer
- School of Biomedical Sciences, The University of Western Australia, Crawley, Western Australia, 6009, Australia. .,The Cooperative Research Centre for Honey Bee Products Limited, Western Australia, Australia.
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31
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Wang W, Huang X, Yang H, Niu X, Li D, Yang C, Li L, Zou L, Qiu Z, Wu S, Li Y. Antibacterial Activity and Anti-Quorum Sensing Mediated Phenotype in Response to Essential Oil from Melaleuca bracteata Leaves. Int J Mol Sci 2019; 20:E5696. [PMID: 31739398 PMCID: PMC6887945 DOI: 10.3390/ijms20225696] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2019] [Revised: 11/03/2019] [Accepted: 11/11/2019] [Indexed: 12/23/2022] Open
Abstract
The prominent antibacterial and quorum sensing (QS) inhibition activity of aromatic plants can be used as a novel intervention strategy for attenuating bacterial pathogenicity. In the present work, a total of 29 chemical components were identified in the essential oil (EO) of Melaleuca bracteata leaves by gas chromatography-mass spectrometry (GC-MS). The principal component was methyleugenol, followed by methyl trans-cinnamate, with relative contents of 90.46% and 4.25%, respectively. Meanwhile, the antibacterial activity and the QS inhibitory activity of M. bracteata EO were first evaluated here. Antibacterial activity assay and MIC detection against seven pathogens (Dickeya dadantii Onc5, Staphylococcus aureus ATCC25933, Pseudomonas spp., Escherichia coli ATCC25922, Serratia marcescens MG1, Pseudomonas aeruginosa PAO1 and Chromobacterium violaceum ATCC31532) demonstrated that S. aureus ATCC25933 and S. marcescens MG1 had the higher sensitivity to M. bracteata EO, while P. aeruginosa PAO1 displayed the strongest resistance to M. bracteata EO. An anti-QS (anti-quorum sensing) assay revealed that at sub-minimal inhibitory concentrations (sub-MICs), M. bracteata EO strongly interfered with the phenotype, including violacein production, biofilm biomass, and swarming motility, as well as N-hexanoyl-L-homoserine lactone (C6-HSL) production (i.e., a signaling molecule in C. violaceum ATCC31532) of C. violaceum. Detection of C6-HSL indicated that M. bracteata EO was capable of not only inhibiting C6-HSL production in C. violaceum, but also degrading the C6-HSL. Importantly, changes of exogenous C6-HSL production in C. violaceum CV026 revealed a possible interaction between M. bracteata EO and a regulatory protein (cviR). Additionally, quantitative real-time polymerase chain reaction (RT-qPCR) analysis demonstrated that the expression of QS-related genes (cviI, cviR, vioABCDE, hmsNR, lasA-B, pilE1, pilE3, and hcnB) was significantly suppressed. Conclusively, these results indicated that M. bracteata EO can act as a potential antibacterial agent and QS inhibitor (QSI) against pathogens, preventing and controlling bacterial contamination.
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Affiliation(s)
- Wenting Wang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (W.W.); (X.H.); (H.Y.); (D.L.); (C.Y.); (L.L.); (L.Z.); (Z.Q.)
| | - Xiaoqin Huang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (W.W.); (X.H.); (H.Y.); (D.L.); (C.Y.); (L.L.); (L.Z.); (Z.Q.)
| | - Huixiang Yang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (W.W.); (X.H.); (H.Y.); (D.L.); (C.Y.); (L.L.); (L.Z.); (Z.Q.)
| | - Xianqian Niu
- Fujian Institute of Tropical Crops, Zhangzhou 363001, China;
| | - Dongxiang Li
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (W.W.); (X.H.); (H.Y.); (D.L.); (C.Y.); (L.L.); (L.Z.); (Z.Q.)
| | - Chao Yang
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (W.W.); (X.H.); (H.Y.); (D.L.); (C.Y.); (L.L.); (L.Z.); (Z.Q.)
| | - Liang Li
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (W.W.); (X.H.); (H.Y.); (D.L.); (C.Y.); (L.L.); (L.Z.); (Z.Q.)
| | - Liting Zou
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (W.W.); (X.H.); (H.Y.); (D.L.); (C.Y.); (L.L.); (L.Z.); (Z.Q.)
| | - Ziwen Qiu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (W.W.); (X.H.); (H.Y.); (D.L.); (C.Y.); (L.L.); (L.Z.); (Z.Q.)
| | - Shaohua Wu
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (W.W.); (X.H.); (H.Y.); (D.L.); (C.Y.); (L.L.); (L.Z.); (Z.Q.)
| | - Yongyu Li
- College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou 350002, China; (W.W.); (X.H.); (H.Y.); (D.L.); (C.Y.); (L.L.); (L.Z.); (Z.Q.)
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Heo YM, Lee H, Kim K, Kwon SL, Park MY, Kang JE, Kim GH, Kim BS, Kim JJ. Fungal Diversity in Intertidal Mudflats and Abandoned Solar Salterns as a Source for Biological Resources. Mar Drugs 2019; 17:E601. [PMID: 31652878 PMCID: PMC6891761 DOI: 10.3390/md17110601] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Revised: 10/18/2019] [Accepted: 10/22/2019] [Indexed: 02/06/2023] Open
Abstract
Intertidal zones are unique environments that are known to be ecological hot spots. In this study, sediments were collected from mudflats and decommissioned salterns on three islands in the Yellow Sea of South Korea. The diversity analysis targeted both isolates and unculturable fungi via Illumina sequencing, and the natural recovery of the abandoned salterns was assessed. The phylogeny and bioactivities of the fungal isolates were investigated. The community analysis showed that the abandoned saltern in Yongyudo has not recovered to a mudflat, while the other salterns have almost recovered. The results suggested that a period of more than 35 years may be required to return abandoned salterns to mudflats via natural restoration. Gigasporales sp. and Umbelopsis sp. were selected as the indicators of mudflats. Among the 53 isolates, 18 appeared to be candidate novel species, and 28 exhibited bioactivity. Phoma sp., Cladosporium sphaerospermum, Penicillium sp. and Pseudeurotium bakeri, and Aspergillus urmiensis showed antioxidant, tyrosinase inhibition, antifungal, and quorum-sensing inhibition activities, respectively, which has not been reported previously. This study provides reliable fungal diversity information for mudflats and abandoned salterns and shows that they are highly valuable for bioprospecting not only for novel microorganisms but also for novel bioactive compounds.
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Affiliation(s)
- Young Mok Heo
- Division of Environmental Science & Ecological Engineering, College of Life Sciences & Biotechnology, Korea University, Seoul 02841, Korea.
| | - Hanbyul Lee
- Division of Environmental Science & Ecological Engineering, College of Life Sciences & Biotechnology, Korea University, Seoul 02841, Korea.
| | - Kyeongwon Kim
- Division of Environmental Science & Ecological Engineering, College of Life Sciences & Biotechnology, Korea University, Seoul 02841, Korea.
| | - Sun Lul Kwon
- Division of Environmental Science & Ecological Engineering, College of Life Sciences & Biotechnology, Korea University, Seoul 02841, Korea.
| | - Min Young Park
- Department of Biosystems & Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Korea.
| | - Ji Eun Kang
- Department of Biosystems & Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul 02841, Korea.
| | - Gyu-Hyeok Kim
- Division of Environmental Science & Ecological Engineering, College of Life Sciences & Biotechnology, Korea University, Seoul 02841, Korea.
| | - Beom Seok Kim
- Division of Biotechnology, College of Life Sciences & Biotechnology, Korea University, Seoul 02841, Korea.
| | - Jae-Jin Kim
- Division of Environmental Science & Ecological Engineering, College of Life Sciences & Biotechnology, Korea University, Seoul 02841, Korea.
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Anti-quorum sensing and antibiofilm activities of Blastobotrys parvus PPR3 against Pseudomonas aeruginosa PAO1. Microb Pathog 2019; 138:103811. [PMID: 31644930 DOI: 10.1016/j.micpath.2019.103811] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Revised: 10/17/2019] [Accepted: 10/18/2019] [Indexed: 12/28/2022]
Abstract
The bacterial cell communication also termed as Quorum sensing (QS) system was involved in the expression of several virulence traits during Pseudomonas infection. The attenuating of this bacterial cell communication system is an attractive approach for the management of bacterial infections without the complication of resistance development. In this respect, the marine environment has gained significant attention due to its biodiversity and as a source of novel bioactive compounds. The present study aimed to screening effective QS inhibitors from marine associated fungal species for QS inhibitors. Twelve morphologically distinct fungal isolates were isolated from the wood of Avicennia marina from marine ecosystem. The anti-QS potential of fungal crude extract from was investigated in biosensor strain and test bacterium, Chromobacterium violaceum and Pseudomonas aeruginosa PAO1, respectively. Promising anti-QS activity was observed in the crude extract of one of the fungal isolate and identified by molecular characterization using internal transcribed spacer (ITS) region as Blastobotrys parvus PPR3. The anti-virulence and antibiofilm effects of ethyl acetate fractions from PPR3 against P. aeruginosa PAO1 were evaluated. The fungal metabolites responsible for the anti-QS activity of fungal crude extract was identified using gas chromatography-mass spectrometry (GC-MS). Furthermore, molecular docking studies were performed to understand the interaction of bioactive compounds with as receptors of P. aeruginosa PAO1. The crude extract of PPR3 showed reduction in different virulence traits of P. aeruginosa PAO1 such as production of pyocyanin, elastase, protease, chitinase, swimming and swarming motility, biofilm formation, exopolysaccharide production and alginate production at different sub-MIC concentrations. Interaction of bioactive metabolites with LasR and RhlR receptors of P. aeruginosa PAO1 was reported. The findings of the present study suggested that metabolites of B. parvus PPR3 interfere with QS system of P. aeruginosa PAO1 and alters the production of virulence factors.
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Tyrosol from marine Fungi, a novel Quorum sensing inhibitor against Chromobacterium violaceum and Pseudomonas aeruginosa. Bioorg Chem 2019; 91:103140. [DOI: 10.1016/j.bioorg.2019.103140] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 07/12/2019] [Accepted: 07/19/2019] [Indexed: 11/30/2022]
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Reina JC, Pérez-Victoria I, Martín J, Llamas I. A Quorum-Sensing Inhibitor Strain of Vibrio alginolyticus Blocks Qs-Controlled Phenotypes in Chromobacterium violaceum and Pseudomonas aeruginosa. Mar Drugs 2019; 17:md17090494. [PMID: 31450549 PMCID: PMC6780304 DOI: 10.3390/md17090494] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2019] [Revised: 08/14/2019] [Accepted: 08/22/2019] [Indexed: 12/11/2022] Open
Abstract
The cell density-dependent mechanism, quorum sensing (QS), regulates the expression of virulence factors. Its inhibition has been proposed as a promising new strategy to prevent bacterial pathogenicity. In this study, 827 strains from the microbiota of sea anemones and holothurians were screened for their ability to produce quorum-sensing inhibitor (QSI) compounds. The strain M3-10, identified as Vibrio alginolyticus by 16S rRNA gene sequencing, as well as ANIb and dDDH analyses, was selected for its high QSI activity. Bioassay-guided fractionation of the cell pellet extract from a fermentation broth of strain M3-10, followed by LC–MS and NMR analyses, revealed tyramine and N-acetyltyramine as the active compounds. The QS inhibitory activity of these molecules, which was confirmed using pure commercially available standards, was found to significantly inhibit Chromobacterium violaceum ATCC 12472 violacein production and virulence factors, such as pyoverdine production, as well as swarming and twitching motilities, produced by Pseudomonas aeruginosa PAO1. This constitutes the first study to screen QSI-producing strains in the microbiota of anemones and holothurians and provides an insight into the use of naturally produced QSI as a possible strategy to combat bacterial infections.
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Affiliation(s)
- José Carlos Reina
- Department of Microbiology, Faculty of Pharmacy, University of Granada, Campus Universitario Cartuja s/n, 18071 Granada, Spain
| | - Ignacio Pérez-Victoria
- MEDINA Foundation, Andalusian Center of Excellence for Research into Innovative Medicines, Health Sciences Technological Park (PTS), Avda. del Conocimiento 34, 18016 Armilla, Granada, Spain.
| | - Jesús Martín
- MEDINA Foundation, Andalusian Center of Excellence for Research into Innovative Medicines, Health Sciences Technological Park (PTS), Avda. del Conocimiento 34, 18016 Armilla, Granada, Spain
| | - Inmaculada Llamas
- Department of Microbiology, Faculty of Pharmacy, University of Granada, Campus Universitario Cartuja s/n, 18071 Granada, Spain.
- Institute of Biotechnology, Biomedical Research Center (CIBM), University of Granada, 18100 Granada, Spain.
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Kanugala S, Kumar CG, Rachamalla HKR, Palakeeti B, Kallaganti VSR, Nimmu NV, Cheemalamarri C, Patel HK, Thipparapu G. Chumacin-1 and Chumacin-2 from Pseudomonas aeruginosa strain CGK-KS-1 as novel quorum sensing signaling inhibitors for biocontrol of bacterial blight of rice. Microbiol Res 2019; 228:126301. [PMID: 31422232 DOI: 10.1016/j.micres.2019.126301] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2019] [Revised: 07/05/2019] [Accepted: 07/15/2019] [Indexed: 11/19/2022]
Abstract
The in vitro inhibition of quorum sensing signal, xanthan gum secretion, biofilm formation in different Xanthomonas pathovars and biological control of bacterial blight of rice by the two bioactive extrolites produced by Pseudomonas aeruginosa strain CGK-KS-1 were explored. These extrolites were extracted from Diaion HP-20 resin with methanol and purified by preparative-thin layer chromatography. Further, spectroscopic structural elucidation revealed the tentative identity of these extrolites to be (R,3E,5E,9Z,11E)-13-((3S,5R)-5-acetyl-2,6-dimethylheptan-3-yl)-10-hydroxy-4-methyl-1,8-diazabicyclo[9.3.1]pentadeca-3,5,9,11(15),13-pentaen-2-one and (R,3E,5E,8E,11E)-13-((3S,5R)-5-acetyl-2,6-dimethylheptan-3-yl)-4-methyl-1,8-diazabicyclo[9.3.1]pentadeca-3,5,8,11(15),13-pentaene-2,10-dione, named as Chumacin-1 and Chumacin-2, respectively. Antimicrobial assay showed Chumacin-1 and Chumacin-2 exhibited a strong in vitro growth inhibition against various Xanthomonas pathovars. Quorum sensing overlay assay using a reporter strain Chromobacterium violaceum strain CV026 showed that Chumacin-1 and Chumacin-2 inhibited quorum sensing signaling. The mechanistic studies revealed that these extrolites inhibited the production of quorum sensing signaling factor, cis-11-methyl-2-dodecenoic acid; suppressed the xanthan gum secretion and also inhibited the biofilms formed by various Xanthomonas pathovars. Both Chumacin-1 and Chumacin-2 showed ROS generation in the test Xanthomonas strains, resulting in in vitro cell membrane damage was revealed through CSLM and FE-SEM micrographs. Further, greenhouse experiments using Samba Mashuri (BPT-5204) revealed that seed treatment with Chumacin-1 and Chumacin-2 along with foliar spray groups showed up to ˜80% reduction in bacterial blight disease in rice. To the best of our knowledge, this is the first report on new quorum sensing inhibitors, Chumacin-1 and Chumacin-2 produced by Pseudomonas aeruginosa strain CGK-KS-1 exhibiting DSF inhibition activity in Xanthomonas oryzae pv. oryzae.
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Affiliation(s)
- Sirisha Kanugala
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500007, India; Academy of Scientific and Innovative Research, Ghaziabad 201002, India
| | - C Ganesh Kumar
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500007, India; Academy of Scientific and Innovative Research, Ghaziabad 201002, India.
| | - Hari Krishna Reddy Rachamalla
- Department of Applied Biology, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500007, India
| | - Babji Palakeeti
- Department of Applied Biology, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500007, India
| | | | - Narendra Varma Nimmu
- Department of Analytical Chemistry, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500007, India
| | - Chandrasekhar Cheemalamarri
- Department of Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology, Uppal Road, Tarnaka, Hyderabad 500007, India
| | - Hitendra Kumar Patel
- CSIR-Centre for Cellular and Molecular Biology, Uppal Road, Hyderabad 500007, India
| | - Ganapathi Thipparapu
- Stem Cell Research Division, Department of Biochemistry, ICMR-National Institute of Nutrition, Tarnaka, Hyderabad 500007, India
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Quorum sensing inimical activity of Tribulus terrestris against gram negative bacterial pathogens by signalling interference. 3 Biotech 2019; 9:163. [PMID: 30944810 DOI: 10.1007/s13205-019-1695-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2017] [Accepted: 03/27/2019] [Indexed: 12/11/2022] Open
Abstract
Bacterial virulence is controlled by a cascade of genes influenced by quorum sensing alias bacterial signalling.The present study was intended to develop an effective module that could constrain bacterial communication without harming the host. Quorum quenching ability of Tribulus terrestris was screened upon chromogenic reporter strains such as Chromobacterium violaceum, Serratia marcescens and Pseudomonas aeruginosa. Hydro-alcoholic extracts of root showed positive quorum quenching activity by effectively down regulating quorum sensing controlled mechanisms such as pigment production and biofilm formation. Lead component was purified and found to be ß-1, 5-O-dibenzoyl ribofuranose by GC-MS NIST and NMR spectrometry. Interestingly it was observed that the compound was neither bactericidal nor bacteriostatic but rather it's only disturbing its interaction. Further studies revealed that the antagonist is not inhibiting the production of signalling molecule acyl homoserine lactone, instead inhibiting its action.
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Biofilm inhibitory activity of metallo-protein AHL-lactonase from cell-free lysate of endophytic Enterobacter species isolated from Coscinium fenestratum Gaertn. BIOCATALYSIS AND AGRICULTURAL BIOTECHNOLOGY 2019. [DOI: 10.1016/j.bcab.2019.01.047] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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39
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Black sesame pigment extract from sesame dregs by subcritical CO2: Extraction optimization, composition analysis, binding copper and antioxidant protection. Lebensm Wiss Technol 2019. [DOI: 10.1016/j.lwt.2018.10.040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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40
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Bali EB, Türkmen KE, Erdönmez D, Sağlam N. Comparative Study of Inhibitory Potential of Dietary Phytochemicals Against Quorum Sensing Activity of and Biofilm Formation by Chromobacterium violaceum 12472, and Swimming and Swarming Behaviour of Pseudomonas aeruginosa PAO1. Food Technol Biotechnol 2019; 57:212-221. [PMID: 31537970 PMCID: PMC6718966 DOI: 10.17113/ftb.57.02.19.5823] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Quorum sensing (QS) and biofilm formation are important mechanisms related to antibiotic resistance of many pathogens. Alternative treatments are needed to prevent recurrent or chronic infections caused by multi-resistant pathogens. Therefore, the aim of this study is to investigate and compare the inhibitory potential of the dietary phytochemicals: curcumin, quercetin, apigenin, pyrogallol, gallic acid and luteolin against QS of and biofilm formation by Chromobacterium violaceum ATCC 12472 and the swimming and swarming abilities of Pseudomonas aeruginosa PAO1. Anti-QS potential of the phytochemicals was evaluated qualitatively and quantitatively using C. violaceum via the disk diffusion assay based on violacein pigment inhibition at the subminimal inhibitory concentrations ranging from 46.87 to 750 µg/mL. The results of anti-QS and antibiofilm activities on C. violaceum demonstrated that all the phytochemicals except pyrogallol and gallic acid inhibited violacein production (from (11.0±0.1) to (88.2±0.1) %) in a concentration-dependent manner. In addition, the biofilm formation was also significantly inhibited (p<0.05) in the presence of all the phytochemicals ((1.38±0.08)–(84.2±0.2) %). In the present study, the results revealed that quercetin, curcumin, apigenin and luteolin could be promising QS and biofilm inhibitory agents against the C. violaceum 12472 biosensor system. Our findings also suggest that all the phytochemicals, especially curcumin, quercetin and pyrogallol, might be anti-pathogenic agents against P. aeruginosa PAO1 infections due to the ability to control QS. However, more comprehensive studies at the molecular level, explaining their anti-QS mechanisms, need to be conducted to confirm these results and identify the genes involved.
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Affiliation(s)
- Elif Burcu Bali
- Gazi University, Vocational School of Health Services, Department of Medical Services and Techniques, Programme of Medical Laboratory Techniques, 06830 Gölbaşı, Ankara, Turkey
| | - Kübra Erkan Türkmen
- Karamanoğlu Mehmetbey University, Faculty of Science Department of Biology, 70100 Karaman, Turkey.,Hacettepe University, Faculty of Science Department of Biology and Biotechnology, 06800 Beytepe, Ankara, Turkey
| | - Demet Erdönmez
- Aksaray University, Faculty of Science and Letters, Department of Biology, 68100 Aksaray, Turkey
| | - Necdet Sağlam
- Hacettepe University, Graduate School of Science and Engineering, Nanotechnology and Nanomedicine Division, 06800 Beytepe, Ankara, Turkey
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Vadakkan K, Vijayanand S, Choudhury AA, Gunasekaran R, Hemapriya J. Optimization of quorum quenching mediated bacterial attenuation of Solanum torvum root extract by response surface modelling through Box-Behnken approach. J Genet Eng Biotechnol 2018; 16:381-386. [PMID: 30733750 PMCID: PMC6353653 DOI: 10.1016/j.jgeb.2018.02.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Revised: 01/21/2018] [Accepted: 02/02/2018] [Indexed: 11/25/2022]
Abstract
The present study was intended to optimize the quorum sensing inhibitory action of Solanum torvum root extract against Chromobacterium violaceum. Factors such as bacterial density, frequency of administration and concentration of extract were analysed. Plant samples were collected from Thrissur District, Kerala, India. Response surface modelling of factors by Box-Behnken approach was employed for optimizing quorum quenching activity of extract. The adequacy of mathematical model was verified by ANOVA and Cook's distance table. Results revealed that quorum quenching property of Solanum torvum root extract is highly influenced by variables studied whereas maximum activity was found during administration of 300 µg/ml extract thrice in a day. It was also understood that extract does not possess any bactericidal activity wherein it only silence its quorum sensing mediated functions. This observations can be further used in quorum quenching studies.
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Affiliation(s)
- Kayeen Vadakkan
- Bioresource Technology Lab, Department of Biotechnology, Thiruvalluvar University, Vellore, TN 632115, India
| | - Selvaraj Vijayanand
- Bioresource Technology Lab, Department of Biotechnology, Thiruvalluvar University, Vellore, TN 632115, India
| | - Abbas Alam Choudhury
- Bioresource Technology Lab, Department of Biotechnology, Thiruvalluvar University, Vellore, TN 632115, India
| | - Ramya Gunasekaran
- Bioresource Technology Lab, Department of Biotechnology, Thiruvalluvar University, Vellore, TN 632115, India
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Wang H, Chu W, Ye C, Gaeta B, Tao H, Wang M, Qiu Z. Chlorogenic acid attenuates virulence factors and pathogenicity of Pseudomonas aeruginosa by regulating quorum sensing. Appl Microbiol Biotechnol 2018; 103:903-915. [PMID: 30421108 DOI: 10.1007/s00253-018-9482-7] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2018] [Revised: 09/21/2018] [Accepted: 10/23/2018] [Indexed: 01/12/2023]
Abstract
Quorum sensing (QS) is a cell-to-cell communication that is used by bacteria to regulate collective behaviors. Quorum sensing controls virulence factor production in many bacterial species and it is regarded as an attractive target to combat bacterial pathogenicity, especially against antibiotic-resistant bacteria. Chlorogenic acid (CA), abundant in fruits, vegetables, and Chinese herbs, processes multiple activities. In this research, we explored its quorum sensing quenching activity. In Pseudomonas aeruginosa, CA significantly inhibited the formation of biofilm, the ability of swarming, and virulence factors including protease and elastase activities and rhamnolipid and pyocyanin production. CA showed similar inhibitory effects in Chromobacterium violaceum on its biofilm formation, swarming motility, chitinolytic activity and violacein production. We examined the expression of QS-related genes in P.aeruginosa and found these genes were all downregulated by CA treatment. Computational modeling revealed that CA can form hydrogen bonds with all three QS receptors. Caenorhabditis elegans and mouse infection models were employed to explore the anti-virulence ability of CA and its effect on pathogenesis process in vivo. CA extended the survival period and reduced the quantity of P. aeruginosa in nematode gut, showing a moderate protective effect on C. elegans. In mice wound model, CA-treated groups showed an accelerating healing rate and the bacteria number in wound area was also decreased by CA treatment. It is suggested by our research that CA has potential to be used as an anti-virulence factor in P. aeruginosa infection.
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Affiliation(s)
- Hong Wang
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, 210009, People's Republic of China
| | - Weihua Chu
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, 210009, People's Republic of China
| | - Chao Ye
- School of computer Science and Engineering, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Bruno Gaeta
- School of computer Science and Engineering, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Huimin Tao
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, 210009, People's Republic of China
| | - Min Wang
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, 210009, People's Republic of China.
| | - Zheng Qiu
- School of Life Science and Technology, China Pharmaceutical University, Nanjing, 210009, People's Republic of China.
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Impact of curcumin liposomes with anti-quorum sensing properties against foodborne pathogens Aeromonas hydrophila and Serratia grimesii. Microb Pathog 2018; 122:137-143. [DOI: 10.1016/j.micpath.2018.06.009] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2017] [Revised: 04/27/2018] [Accepted: 06/06/2018] [Indexed: 01/07/2023]
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44
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Algburi A, Zehm S, Netrebov V, Bren AB, Chistyakov V, Chikindas ML. Subtilosin Prevents Biofilm Formation by Inhibiting Bacterial Quorum Sensing. Probiotics Antimicrob Proteins 2018; 9:81-90. [PMID: 27914001 DOI: 10.1007/s12602-016-9242-x] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Subtilosin, the cyclic lantibiotic protein produced by Bacillus subtilis KATMIRA1933, targets the surface receptor and electrostatically binds to the bacterial cell membrane. In this study, subtilosin was purified using ammonium sulfate ((NH4)2SO4) precipitation and purified via column chromatography. Subtilosin's antibacterial minimum and sub-minimum inhibitory concentrations (MIC and sub-MIC) and anti-biofilm activity (biofilm prevention) were established. Subtilosin was evaluated as a quorum sensing (QS) inhibitor in Gram-positive bacteria using Fe(III) reduction assay. In Gram-negative bacteria, subtilosin was evaluated as a QS inhibitor utilizing Chromobacterium voilaceum as a microbial reporter. The results showed that Gardnerella vaginalis was more sensitive to subtilosin with MIC of 6.25 μg/mL when compared to Listeria monocytogenes (125 μg/mL). The lowest concentration of subtilosin, at which more than 90% of G. vaginalis biofilm was inhibited without effecting the growth of planktonic cells, was 0.78 μg/mL. About 80% of L. monocytogenes and more than 60% of Escherichia coli biofilm was inhibited when 15.1 μg/mL of subtilosin was applied. Subtilosin with 7.8-125 μg/mL showed a significant reduction in violacein production without any inhibitory effect on the growth of C. violaceum. Subtilosin at 3 and 4 μg/mL reduced the level of Autoinducer-2 (AI-2) production in G. vaginalis. However, subtilosin did not influence AI-2 production by L. monocytogenes at sub-MICs of 0.95-15.1 μg/mL. To our knowledge, this is the first report exploring the relationship between biofilm prevention and quorum sensing inhibition in G. vaginalis using subtilosin as a quorum sensing inhibitor.
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Affiliation(s)
- Ammar Algburi
- Department of Biochemistry and Microbiology, Rutgers State University, New Brunswick, NJ, 08901, USA.,Department of Microbiology, Veterinary College, Diyala University, Baqubah, Iraq
| | - Saskia Zehm
- Department of Life Sciences and Technology, Beuth University of Applied Sciences, Berlin, Germany
| | - Victoria Netrebov
- Health Promoting Naturals Laboratory, School of Environmental and Biological Sciences, Rutgers State University, New Brunswick, NJ, USA
| | - Anzhelica B Bren
- D. I. Ivanovsky Academy of Biology and Biotechnology, Southern Federal University, Rostov-on-Don, Russia
| | - Vladimir Chistyakov
- D. I. Ivanovsky Academy of Biology and Biotechnology, Southern Federal University, Rostov-on-Don, Russia
| | - Michael L Chikindas
- School of Environmental and Biological Sciences, Rutgers State University, New Brunswick, NJ, USA. .,Center for Digestive Health, New Jersey Institute for Food, Nutrition and Health, New Brunswick, NJ, USA. .,Rutgers State University, 65 Dudley Road, New Brunswick, NJ, 08901, USA.
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45
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Łopusiewicz Ł, Jędra F, Mizielińska M. New Poly(lactic acid) Active Packaging Composite Films Incorporated with Fungal Melanin. Polymers (Basel) 2018; 10:E386. [PMID: 30966422 PMCID: PMC6415272 DOI: 10.3390/polym10040386] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 03/23/2018] [Accepted: 03/27/2018] [Indexed: 12/21/2022] Open
Abstract
In this work, fungal melanin was used for the first time to prepare poly(lactic acid)-based composites. The films of various melanin concentrations (0.025%, 0.05% and 0.2% w/w) were prepared using an extrusion method. The mechanical, antioxidant, antimicrobial, water vapor and UV-Vis barrier properties, as well as available polyphenolics on the surface, were studied. FT-IR and Raman spectroscopy studies were carried out to analyze the chemical composition of the resulting films. The hydrophobicity, color response, thermal, optical properties, and opacity values were also determined. The results of this study show that the addition of fungal melanin to poly(lactic acid) (PLA) as a modifier influenced mechanical and water vapor barrier properties depending on melanin concentration. In low concentration, melanin enhanced the mechanical and barrier properties of the modified films, but in larger amounts, the properties were decreased. The UV-Vis barrier properties of PLA/melanin composites were marginally improved. Differential Scanning Calorimetry (DSC) analysis indicated that crystallinity of PLA increased by the addition of melanin, but this did not affect the thermal stability of the films. Modified PLA/melanin films showed good antioxidant activity and were active against Enterococcus faecalis, Pseudomonas aeruginosa and Pseudomonas putida. The addition of melanin caused changes in color values, decreasing lightness and increasing the redness and yellowness of films. Based on the results of this study, fungal melanin has good potential to be exploited as a value-added modifier that can improve the overall properties of PLA.
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Affiliation(s)
- Łukasz Łopusiewicz
- Center of Bioimmobilisation and Innovative Packaging Materials, Faculty of Food Sciences and Fisheries, West Pomeranian University of Technology Szczecin, Janickiego 35, 71-270 Szczecin, Poland.
| | - Filip Jędra
- Center of Bioimmobilisation and Innovative Packaging Materials, Faculty of Food Sciences and Fisheries, West Pomeranian University of Technology Szczecin, Janickiego 35, 71-270 Szczecin, Poland.
| | - Małgorzata Mizielińska
- Center of Bioimmobilisation and Innovative Packaging Materials, Faculty of Food Sciences and Fisheries, West Pomeranian University of Technology Szczecin, Janickiego 35, 71-270 Szczecin, Poland.
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46
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Lima DC, Nyberg LK, Westerlund F, Batistuzzo de Medeiros SR. Identification and DNA annotation of a plasmid isolated from Chromobacterium violaceum. Sci Rep 2018; 8:5327. [PMID: 29593241 PMCID: PMC5871888 DOI: 10.1038/s41598-018-23708-5] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 03/12/2018] [Indexed: 12/18/2022] Open
Abstract
Chromobacterium violaceum is a ß-proteobacterium found widely worldwide with important biotechnological properties and is associated to lethal sepsis in immune-depressed individuals. In this work, we report the discover, complete sequence and annotation of a plasmid detected in C. violaceum that has been unnoticed until now. We used DNA single-molecule analysis to confirm that the episome found was a circular molecule and then proceeded with NGS sequencing. After DNA annotation, we found that this extra-chromosomal DNA is probably a defective bacteriophage of approximately 44 kilobases, with 39 ORFs comprising, mostly hypothetical proteins. We also found DNA sequences that ensure proper plasmid replication and partitioning as well as a toxin addiction system. This report sheds light on the biology of this important species, helping us to understand the mechanisms by which C. violaceum endures to several harsh conditions. This discovery could also be a first step in the development of a DNA manipulation tool in this bacterium.
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Affiliation(s)
- Daniel C Lima
- Instituto Federal de Educação, Ciência e Tecnologia do Rio Grande do Norte, Natal, Brazil.,Laboratório de Biologia Molecular e Genômica, Universidade Federal do Rio Grande do Norte, Natal, Brazil
| | - Lena K Nyberg
- Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Fredrik Westerlund
- Department of Biology and Biological Engineering, Chalmers University of Technology, Gothenburg, Sweden
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47
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Turan NB, Engin GÖ. Quorum Quenching. FUNDAMENTALS OF QUORUM SENSING, ANALYTICAL METHODS AND APPLICATIONS IN MEMBRANE BIOREACTORS 2018. [DOI: 10.1016/bs.coac.2018.02.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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48
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Bacon CW, Hinton DM, Mitchell TR. Is Quorum Signaling by Mycotoxins a New Risk-Mitigating Strategy for Bacterial Biocontrol of Fusarium verticillioides and Other Endophytic Fungal Species? JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2017; 65:7071-7080. [PMID: 27958725 DOI: 10.1021/acs.jafc.6b03861] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Bacterial endophytes are used as biocontrol organisms for plant pathogens such as the maize endophyte Fusarium verticillioides and its production of fumonisin mycotoxins. However, such applications are not always predictable and efficient. In this work, we hypothesize and review work that quorum sensing inhibitors are produced either by fungi or by pathogenic bacteria for competitive purposes, altering the efficiency of the biocontrol organisms. Recently, quorum sensing inhibitors have been isolated from several fungi, including Fusarium species, three of which are mycotoxins. Thus, we further postulate that other mycotoxins are inhibitors or quenching metabolites that prevent the protective abilities and activities of endophytic biocontrol bacteria within intercellular spaces. To test the aforementioned suppositions, we review work detailing the use of bioassay bacteria for several mycotoxins for quorum activity. We specifically focus on the quorum use of endophytic bacteria as biocontrols for mycotoxic fungal endophytes, such as the Fusarium species and the fumonisin mycotoxins.
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Affiliation(s)
- Charles W Bacon
- U.S. National Poultry Research Center, Toxicology & Mycotoxin Research Unit, Russell Research Center, Agricultural Research Service, U.S. Department of Agriculture , Athens, Georgia 30605, United States
| | - Dorothy M Hinton
- U.S. National Poultry Research Center, Toxicology & Mycotoxin Research Unit, Russell Research Center, Agricultural Research Service, U.S. Department of Agriculture , Athens, Georgia 30605, United States
| | - Trevor R Mitchell
- U.S. National Poultry Research Center, Toxicology & Mycotoxin Research Unit, Russell Research Center, Agricultural Research Service, U.S. Department of Agriculture , Athens, Georgia 30605, United States
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49
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Singh VK, Mishra A, Jha B. Anti-quorum Sensing and Anti-biofilm Activity of Delftia tsuruhatensis Extract by Attenuating the Quorum Sensing-Controlled Virulence Factor Production in Pseudomonas aeruginosa. Front Cell Infect Microbiol 2017; 7:337. [PMID: 28798903 PMCID: PMC5526841 DOI: 10.3389/fcimb.2017.00337] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Accepted: 07/10/2017] [Indexed: 11/13/2022] Open
Abstract
Multidrug-resistance bacteria commonly use cell-to-cell communication that leads to biofilm formation as one of the mechanisms for developing resistance. Quorum sensing inhibition (QSI) is an effective approach for the prevention of biofilm formation. A Gram-negative bacterium, Delftia tsuruhatensis SJ01, was isolated from the rhizosphere of a species of sedge (Cyperus laevigatus) grown along the coastal-saline area. The isolate SJ01 culture and bacterial crude extract showed QSI activity in the biosensor plate containing the reference strain Chromobacterium violaceum CV026. A decrease in the violacein production of approximately 98% was detected with the reference strain C. violaceum CV026. The bacterial extract (strain SJ01) exhibited anti-quorum sensing activity and inhibited the biofilm formation of clinical isolates wild-type Pseudomonas aeruginosa PAO1 and P. aeruginosa PAH. A non-toxic effect of the bacterial extract (SJ01) was detected on the cell growth of the reference strains as P. aeruginosa viable cells were present within the biofilm. It is hypothesized that the extract (SJ01) may change the topography of the biofilm and thus prevent bacterial adherence on the biofilm surface. The extract also inhibits the motility, virulence factors (pyocyanin and rhamnolipid) and activity (elastase and protease) in P. aeruginosa treated with SJ01 extract. The potential active compound present was identified as 1,2-benzenedicarboxylic acid, diisooctyl ester. Microarray and transcript expression analysis unveiled differential expression of quorum sensing regulatory genes. The key regulatory genes, LasI, LasR, RhlI, and RhlR were down-regulated in the P. aeruginosa analyzed by quantitative RT-PCR. A hypothetical model was generated of the transcriptional regulatory mechanism inferred in P. aeruginosa for quorum sensing, which will provide useful insight to develop preventive strategies against the biofilm formation. The potential active compound identified, 1,2-benzenedicarboxylic acid, diisooctyl ester, has the potential to be used as an anti-pathogenic drug for the treatment of biofilm-forming pathogenic bacteria. For that, a detailed study is needed to investigate the possible applications.
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Affiliation(s)
- Vijay K Singh
- Marine Biotechnology and Ecology Division, CSIR-Central Salt and Marine Chemicals Research InstituteBhavnagar, India
| | - Avinash Mishra
- Marine Biotechnology and Ecology Division, CSIR-Central Salt and Marine Chemicals Research InstituteBhavnagar, India
| | - Bhavanath Jha
- Marine Biotechnology and Ecology Division, CSIR-Central Salt and Marine Chemicals Research InstituteBhavnagar, India
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50
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Abdullah, Asghar A, Butt MS, Shahid M, Huang Q. Evaluating the antimicrobial potential of green cardamom essential oil focusing on quorum sensing inhibition of Chromobacterium violaceum. Journal of Food Science and Technology 2017; 54:2306-2315. [PMID: 28740287 DOI: 10.1007/s13197-017-2668-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Revised: 04/19/2017] [Accepted: 04/26/2017] [Indexed: 11/29/2022]
Abstract
Spices are well known for their taste and flavor imparting properties. Green cardamom (Elletaria cardamomum), a herb spice belongs to family Zingiberaceae. In current study, GC-MS analysis of green cardamom essential oil (CEO) resulted in identification of twenty-six compounds with α-terpinyl acetate (38.4%), 1,8-cineole (28.71%), linalool acetate (8.42%), sabinene (5.21%), and linalool (3.97%) as major bioactive components. Present study also described the antimicrobial properties like zone of inhibition, minimum inhibitory concentration against microbial strains with special emphasis on quorum sensing inhibition. Disk diffusion assay showed that C. albicans and S. mutans were the most sensitive microorganisms followed by S. aureus, L. monocytogenes, B. cereus and S. typhimurium sensor strains, respectively. Whilst P. aeruginosa was found most resistant strain as CEO did not inhibited its growth. The minimum inhibitory concentration (MIC) values of CEO against tested strains were 10 ± 0.00 mg/mL against S. typhimurium, S. aureus and 5 ± 0.00 mg/mL against S. mutans, C. albicans strains, respectively. Regarding quorum sensing inhibition the tested concentrations 0.625 and 0.313 mg/mL of CEO inhibited violacein production with very little effect on growth of C. violaceum. Conclusively, study proved that quorum sensing inhibition values of CEO were much lower compared to MIC revealed values. Hence, cardamom bioactive constituents can effectively be used to develop novel antimicrobial drugs against conventional antibiotics.
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Affiliation(s)
- Abdullah
- National Institute of Food Science and Technology, University of Agriculture, Faisalabad, 38040 Pakistan
| | - Ali Asghar
- National Institute of Food Science and Technology, University of Agriculture, Faisalabad, 38040 Pakistan
| | - Masood Sadiq Butt
- National Institute of Food Science and Technology, University of Agriculture, Faisalabad, 38040 Pakistan
| | - Muhammad Shahid
- Department of Biochemistry, University of Agriculture, Faisalabad, 38040 Pakistan
| | - Qingrong Huang
- Department of Food Science, Rutgers University, 65 Dudley Road, New Brunswick, NJ 08901 USA
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