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Kudo F, Minato A, Sato S, Nagano N, Maruyama C, Hamano Y, Hashimoto J, Kozone I, Shin-Ya K, Eguchi T. Mechanism of S-Adenosyl-l-methionine C-Methylation by Cobalamin-dependent Radical S-Adenosyl-l-methionine Methylase in 1-Amino-2-methylcyclopropanecarboxylic Acid Biosynthesis. Org Lett 2022; 24:8975-8979. [PMID: 36458844 DOI: 10.1021/acs.orglett.2c03555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Abstract
The radical S-adenosyl-l-methionine (SAM) methylase Orf29 catalyzes the C-methylation of SAM in the biosynthesis of 1-amino-2-methylcyclopropanecarboxylic acid. Here, we determined that the methylation product is (4″R)-4″-methyl-SAM. Furthermore, we found that the 5'-deoxyadenosyl radical generated by Orf29 abstracts the pro-R hydrogen atom from the C-4″ position of SAM to generate the radical intermediate, which reacts with methylcobalamin to give (4″R)-4″-methyl-SAM. Consequently, the Orf29-catalyzed C-methylation was confirmed to proceed with retention of configuration.
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Affiliation(s)
- Fumitaka Kudo
- Department of Chemistry, Tokyo Institute of Technology, O-okayama, Tokyo 152-8551, Japan
| | - Atsushi Minato
- Department of Chemistry, Tokyo Institute of Technology, O-okayama, Tokyo 152-8551, Japan
| | - Shusuke Sato
- Department of Chemistry, Tokyo Institute of Technology, O-okayama, Tokyo 152-8551, Japan
| | - Nayuta Nagano
- Department of Chemistry, Tokyo Institute of Technology, O-okayama, Tokyo 152-8551, Japan
| | - Chitose Maruyama
- Department of Bioscience, Fukui Prefectural University, 4-1-1 Yoshida-Gun, Fukui 910-1195, Japan
| | - Yoshimitsu Hamano
- Department of Bioscience, Fukui Prefectural University, 4-1-1 Yoshida-Gun, Fukui 910-1195, Japan
| | - Junko Hashimoto
- Japan Biological Informatics Consortium (JBIC), 2-4-7 Aomi, Koto-ku, Tokyo 135-0064, Japan
| | - Ikuko Kozone
- Japan Biological Informatics Consortium (JBIC), 2-4-7 Aomi, Koto-ku, Tokyo 135-0064, Japan
| | - Kazuo Shin-Ya
- National Institute of Advanced Industrial Science and Technology, 2-4-7 Aomi, Koto-ku, Tokyo 135-0064, Japan
| | - Tadashi Eguchi
- Department of Chemistry, Tokyo Institute of Technology, O-okayama, Tokyo 152-8551, Japan
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2
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Piccirillo S, Morgan AP, Leon AY, Smith AL, Honigberg SM. Investigating cell autonomy in microorganisms. Curr Genet 2022; 68:305-318. [PMID: 35119506 PMCID: PMC9101301 DOI: 10.1007/s00294-022-01231-5] [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: 11/08/2021] [Revised: 01/04/2022] [Accepted: 01/18/2022] [Indexed: 11/28/2022]
Abstract
Cell-cell signaling in microorganisms is still poorly characterized. In this Methods paper, we describe a genetic procedure for detecting cell-nonautonomous genetic effects, and in particular cell-cell signaling, termed the chimeric colony assay (CCA). The CCA measures the effect of a gene on a biological response in a neighboring cell. This assay can measure cell autonomy for range of biological activities including transcript or protein accumulation, subcellular localization, and cell differentiation. To date, the CCA has been used exclusively to investigate colony patterning in the budding yeast Saccharomyces cerevisiae. To demonstrate the wider potential of the assay, we applied this assay to two other systems: the effect of Grr1 on glucose repression of GAL1 transcription in yeast and the effect of rpsL on stop-codon translational readthrough in Escherichia coli. We also describe variations of the standard CCA that address specific aspects of cell-cell signaling, and we delineate essential controls for this assay. Finally, we discuss complementary approaches to the CCA. Taken together, this Methods paper demonstrates how genetic assays can reveal and explore the roles of cell-cell signaling in microbial processes.
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Affiliation(s)
- Sarah Piccirillo
- Department of Genetics, Developmental and Evolutionary Biology, School of Biological and Chemical Sciences, University of Missouri-Kansas City, 5100 Rockhill Rd., Kansas City, MO 64110, USA
| | - Andrew P. Morgan
- Department of Genetics, Developmental and Evolutionary Biology, School of Biological and Chemical Sciences, University of Missouri-Kansas City, 5100 Rockhill Rd., Kansas City, MO 64110, USA
| | - Andy Y. Leon
- Department of Genetics, Developmental and Evolutionary Biology, School of Biological and Chemical Sciences, University of Missouri-Kansas City, 5100 Rockhill Rd., Kansas City, MO 64110, USA
| | - Annika L. Smith
- Department of Genetics, Developmental and Evolutionary Biology, School of Biological and Chemical Sciences, University of Missouri-Kansas City, 5100 Rockhill Rd., Kansas City, MO 64110, USA
| | - Saul M. Honigberg
- Department of Genetics, Developmental and Evolutionary Biology, School of Biological and Chemical Sciences, University of Missouri-Kansas City, 5100 Rockhill Rd., Kansas City, MO 64110, USA
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3
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He W, Yang H, Wang X, Li H, Dong Q. Growth of Salmonella Enteritidis in the presence of quorum sensing signaling compounds produced by Pseudomonas aeruginosa. INTERNATIONAL JOURNAL OF FOOD ENGINEERING 2021. [DOI: 10.1515/ijfe-2021-0089] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Abstract
Quorum sensing (QS) can exist in food-related bacteria and potentially affect bacterial growth through acyl-homoserine lactones (AHLs). To verify the role of QS compounds in the cell-free supernatant, this study examined the effect of supernatant extracted from Pseudomonas aeruginosa culture on the growth kinetics of Salmonella Enteritidis. The results showed that the lag time (λ) of S. Enteritidis was apparently reduced (p < 0.05) under the influence of P. aeruginosa culture supernatant compared with the S. Enteritidis culture supernatant. HPLC-MS/MS test demonstrated that AHLs secreted by P. aeruginosa were mainly C14-HSL with a content of 85.71 μg/mL and a small amount of 3-oxo-C12-HSL. In addition, the commercially synthetic C14-HSL had positive effects on the growth of S. Enteritidis, confirming once again that the growth of S. Enteritidis was affected by AHL metabolized by other bacteria and the complexity of bacterial communication.
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Affiliation(s)
- Weijia He
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology , Shanghai, 516 Jungong Rd. , Shanghai 200093 , P. R. China
| | - Huamei Yang
- Taizhou Center for Disease Control and Prevention , Taizhou , Jiangsu 225300 , P. R. China
| | - Xiang Wang
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology , Shanghai, 516 Jungong Rd. , Shanghai 200093 , P. R. China
| | - Hongmei Li
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology , Shanghai, 516 Jungong Rd. , Shanghai 200093 , P. R. China
| | - Qingli Dong
- School of Medical Instrument and Food Engineering, University of Shanghai for Science and Technology , Shanghai, 516 Jungong Rd. , Shanghai 200093 , P. R. China
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4
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Cui Z, Li Z, Jin Y, Ren T, Chen J, Wang X, Zhong K, Tang L, Tang Y, Cao M. Novel magnetic fluorescence probe based on carbon quantum dots-doped molecularly imprinted polymer for AHLs signaling molecules sensing in fish juice and milk. Food Chem 2020; 328:127063. [DOI: 10.1016/j.foodchem.2020.127063] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 05/09/2020] [Accepted: 05/13/2020] [Indexed: 12/20/2022]
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5
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Ortiz BJ, Boursier ME, Barrett KL, Manson DE, Amador-Noguez D, Abbott NL, Blackwell HE, Lynn DM. Liquid Crystal Emulsions That Intercept and Report on Bacterial Quorum Sensing. ACS APPLIED MATERIALS & INTERFACES 2020; 12:29056-29065. [PMID: 32484648 PMCID: PMC7343617 DOI: 10.1021/acsami.0c05792] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
We report aqueous emulsions of thermotropic liquid crystals (LCs) that can intercept and report on the presence of N-acyl-l-homoserine lactones (AHLs), a class of amphiphiles used by pathogenic bacteria to regulate quorum sensing (QS), monitor population densities, and initiate group activities, including biofilm formation and virulence factor production. The concentration of AHL required to promote "bipolar" to "radial" transitions in micrometer-scale droplets of the nematic LC 4'-pentyl-cyanobiphenyl (5CB) decreases with increasing carbon number in the acyl tail, reaching a threshold concentration of 7.1 μM for 3-oxo-C12-AHL, a native QS signal in the pathogen Pseudomonas aeruginosa. The LC droplets in these emulsions also respond to biologically relevant concentrations of the biosurfactant rhamnolipid, a virulence factor produced by communities of P. aeruginosa under the control of QS. Systematic studies using bacterial mutants support the conclusion that these emulsions respond selectively to the production of rhamnolipid and AHLs and not to other products produced by bacteria at lower (subquorate) population densities. Finally, these emulsions remain configurationally stable in growth media, enabling them to be deployed either in bacterial supernatants or in situ in bacterial cultures to eavesdrop on QS and report on changes in bacterial group behavior that can be detected in real time using polarized light. Our results provide new tools to detect and report on bacterial QS and virulence and a materials platform for the rapid and in situ monitoring of bacterial communication and resulting group behaviors in bacterial communities.
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Affiliation(s)
- Benjamín J Ortiz
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, United States
| | - Michelle E Boursier
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Kelsey L Barrett
- Department of Bacteriology, University of Wisconsin-Madison, 1550 Linden Drive, Madison, Wisconsin 53706, United States
| | - Daniel E Manson
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Daniel Amador-Noguez
- Department of Bacteriology, University of Wisconsin-Madison, 1550 Linden Drive, Madison, Wisconsin 53706, United States
| | - Nicholas L Abbott
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, United States
| | - Helen E Blackwell
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - David M Lynn
- Department of Chemical and Biological Engineering, University of Wisconsin-Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, United States
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
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6
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An alternative strategy to detect bacterial contamination in milk and water: a newly designed electrochemical biosensor. Eur Food Res Technol 2020. [DOI: 10.1007/s00217-020-03491-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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7
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Diaz Perez A, Kougl K, Vasicek TW, Liyanage R, Lay J, Stenken JA. Microdialysis Sampling of Quorum Sensing Homoserine Lactones during Biofilm Formation. Anal Chem 2019; 91:3964-3970. [PMID: 30741530 DOI: 10.1021/acs.analchem.8b05168] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Bacteria communicate chemically through a system called quorum sensing. In this work, microdialysis sampling procedures were optimized to collect quorum sensing molecules produced during in situ biofilm formation directly on the polymeric semipermeable membrane of the microdialysis probe. V. harveyi, a Gram-negative bacterium, was used as the model organism and releases variable chain length acylhomoserine lactones (AHLs) and acyl-oxohomoserine lactones (AOHLs) as signaling molecules during quorum sensing. Eliciting biofilm formation required coating fetal bovine serum onto the poly(ether sulfone) microdialysis membrane. Dialysates were collected in different experiments either during or after biofilm formation directly on a microdialysis probe. Continuous sampling of C4-AHL, C6-AHL, C8-AHL, C6-OXO-AHL, and C12-OXO-AHL was achieved over a period of up to 4 days. The AHLs and AOHLs in dialysates were concentrated with solid-phase extraction and quantified using LC-MS. Dialysate concentrations obtained for the AOHLs and AHLs ranged between 1 and 100 ppb (ng/mL) and varied between sampling days. This work demonstrates the initial use of microdialysis sampling to collect quorum sensing signaling chemicals during biofilm formation by a Gram-negative bacterial species.
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Affiliation(s)
- Alda Diaz Perez
- Department of Chemistry and Biochemistry , University of Arkansas , Fayetteville , Arkansas 72701 , United States
| | - Kaleb Kougl
- Department of Chemistry and Biochemistry , University of Arkansas , Fayetteville , Arkansas 72701 , United States
| | - Thaddeus W Vasicek
- Department of Chemistry and Biochemistry , University of Arkansas , Fayetteville , Arkansas 72701 , United States
| | - Rohana Liyanage
- Department of Chemistry and Biochemistry , University of Arkansas , Fayetteville , Arkansas 72701 , United States
| | - Jackson Lay
- Department of Chemistry and Biochemistry , University of Arkansas , Fayetteville , Arkansas 72701 , United States
| | - Julie A Stenken
- Department of Chemistry and Biochemistry , University of Arkansas , Fayetteville , Arkansas 72701 , United States
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8
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Bauer JS, Hauck N, Christof L, Mehnaz S, Gust B, Gross H. The Systematic Investigation of the Quorum Sensing System of the Biocontrol Strain Pseudomonas chlororaphis subsp. aurantiaca PB-St2 Unveils aurI to Be a Biosynthetic Origin for 3-Oxo-Homoserine Lactones. PLoS One 2016; 11:e0167002. [PMID: 27861617 PMCID: PMC5115851 DOI: 10.1371/journal.pone.0167002] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2016] [Accepted: 11/07/2016] [Indexed: 11/30/2022] Open
Abstract
The shoot endophytic biocontrol strain Pseudomonas chlororaphis subsp. aurantiaca PB-St2 produces a wide range of exoproducts, including enzymes and antibiotics. The production of exoproducts is commonly tightly regulated. In order to get a deeper insight into the regulatory network of PB-St2, the strain was systematically investigated regarding its quorum sensing systems, both on the genetic and metabolic level. The genome analysis of PB-St2 revealed the presence of four putative acyl homoserine lactone (AHL) biosynthesis genes: phzI, csaI, aurI, and hdtS. LC-MS/MS analyses of the crude supernatant extracts demonstrated that PB-St2 produces eight AHLs. In addition, the concentration of all AHL derivatives was quantified time-resolved in parallel over a period of 42 h during the growth of P. aurantiaca PB-St2, resulting in production curves, which showed differences regarding the maximum levels of the AHLs (14.6 nM– 1.75 μM) and the production period. Cloning and heterologous overexpression of all identified AHL synthase genes in Escherichia coli proved the functionality of the resulting synthases PhzI, CsaI, and AurI. A clear AHL production pattern was assigned to each of these three AHL synthases, while the HdtS synthase did not lead to any AHL production. Furthermore, the heterologous expression study demonstrated unequivocally and for the first time that AurI directs the synthesis of two 3-oxo-AHLs.
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Affiliation(s)
- Judith S. Bauer
- Department of Pharmaceutical Biology, Pharmaceutical Institute, University of Tuebingen, Tuebingen, Germany
- German Centre for Infection Research (DZIF), Partner site Tuebingen, Tuebingen, Germany
| | - Nils Hauck
- Department of Pharmaceutical Biology, Pharmaceutical Institute, University of Tuebingen, Tuebingen, Germany
- German Centre for Infection Research (DZIF), Partner site Tuebingen, Tuebingen, Germany
| | - Lisa Christof
- Department of Pharmaceutical Biology, Pharmaceutical Institute, University of Tuebingen, Tuebingen, Germany
- German Centre for Infection Research (DZIF), Partner site Tuebingen, Tuebingen, Germany
| | - Samina Mehnaz
- Department of Biological Sciences, Forman Christian College (A Chartered University), Lahore, Pakistan
| | - Bertolt Gust
- Department of Pharmaceutical Biology, Pharmaceutical Institute, University of Tuebingen, Tuebingen, Germany
- German Centre for Infection Research (DZIF), Partner site Tuebingen, Tuebingen, Germany
| | - Harald Gross
- Department of Pharmaceutical Biology, Pharmaceutical Institute, University of Tuebingen, Tuebingen, Germany
- German Centre for Infection Research (DZIF), Partner site Tuebingen, Tuebingen, Germany
- * E-mail:
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9
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Phaeobacter sp. strain Y4I utilizes two separate cell-to-cell communication systems to regulate production of the antimicrobial indigoidine. Appl Environ Microbiol 2016; 81:1417-25. [PMID: 25527537 DOI: 10.1128/aem.02551-14] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
The marine roseobacter Phaeobacter sp. strain Y4I synthesizes the blue antimicrobial secondary metabolite indigoidine when grown in a biofilm or on agar plates. Prior studies suggested that indigoidine production may be, in part, regulated by cell-to-cell communication systems. Phaeobacter sp. strain Y4I possesses two luxR and luxI homologous N-acyl-L-homoserine lactone (AHL)-mediated cell-to-cell communication systems, designated pgaRI and phaRI. We show here that Y4I produces two dominantAHLs, the novel monounsaturated N-(3-hydroxydodecenoyl)-L-homoserine lactone (3OHC(12:1)-HSL) and the relatively common N-octanoyl-L-homoserine lactone (C8-HSL), and provide evidence that they are synthesized by PhaI and PgaI, respectively.A Tn5 insertional mutation in either genetic locus results in the abolishment (pgaR::Tn5) or reduction (phaR::Tn5) of pigment production. Motility defects and denser biofilms were also observed in these mutant backgrounds, suggesting an overlap in the functional roles of these systems. Production of the AHLs occurs at distinct points during growth on an agar surface and was determined by isotope dilution high-performance liquid chromatography–tandem mass spectrometry (ID-HPLC-MS/MS) analysis.Within 2 h of surface inoculation, only 3OHC(12:1)-HSL was detected in agar extracts. As surface-attached cells became established (at approximately 10 h), the concentration of 3OHC(12:1)-HSL decreased, and the concentration of C8-HSL increased rapidly over 14 h.After longer (>24-h) establishment periods, the concentrations of the two AHLs increased to and stabilized at approximately 15 nM and approximately 600 nM for 3OHC12:1-HSL and C8-HSL, respectively. In contrast, the total amount of indigoidine increased steadily from undetectable to 642 Mby 48 h. Gene expression profiles of the AHL and indigoidine synthases (pgaI, phaI, and igiD) were consistent with their metabolite profiles. These data provide evidence that pgaRI and phaRI play overlapping roles in the regulation of indigoidine biosynthesis, and it is postulated that this allows Phaeobacter sp. strain Y4I to coordinate production of indigoidine with different growth-phase-dependent physiologies.
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Ruysbergh E, Stevens CV, De Kimpe N, Mangelinckx S. Synthesis and analysis of stable isotope-labelled N-acyl homoserine lactones. RSC Adv 2016. [DOI: 10.1039/c6ra17797b] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An easy, reliable manner to make suitable, deuterated standards of AHL-molecules belonging to all three important classes of AHLs is presented, starting from a cheap and commercially available deuterium source.
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Affiliation(s)
- Ewout Ruysbergh
- Department of Sustainable Organic Chemistry and Technology
- Faculty of Bioscience Engineering
- Ghent University
- B-9000 Ghent
- Belgium
| | - Christian V. Stevens
- Department of Sustainable Organic Chemistry and Technology
- Faculty of Bioscience Engineering
- Ghent University
- B-9000 Ghent
- Belgium
| | - Norbert De Kimpe
- Department of Sustainable Organic Chemistry and Technology
- Faculty of Bioscience Engineering
- Ghent University
- B-9000 Ghent
- Belgium
| | - Sven Mangelinckx
- Department of Sustainable Organic Chemistry and Technology
- Faculty of Bioscience Engineering
- Ghent University
- B-9000 Ghent
- Belgium
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11
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O'Connor G, Knecht LD, Salgado N, Strobel S, Pasini P, Daunert S. Whole-Cell Biosensors as Tools for the Detection of Quorum-Sensing Molecules: Uses in Diagnostics and the Investigation of the Quorum-Sensing Mechanism. ADVANCES IN BIOCHEMICAL ENGINEERING/BIOTECHNOLOGY 2015:181-200. [PMID: 26475469 DOI: 10.1007/10_2015_337] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Genetically engineered bacterial whole-cell biosensors are powerful tools that take advantage of bacterial proteins and pathways to allow for detection of a specific analyte. These biosensors have been employed for a broad range of applications, including the detection of bacterial quorum-sensing molecules (QSMs). Bacterial QSMs are the small molecules bacteria use for population density-dependent communication, a process referred to as quorum sensing (QS). Various research groups have investigated the presence of QSMs, including N-acyl homoserine lactones (AHLs) and autoinducer-2 (AI-2), in physiological samples in attempts to enhance our knowledge of the role of bacteria and QS in disease states. Continued studies in these fields may allow for improved patient care and therapeutics based upon QSMs. Furthermore, bacterial whole-cell biosensors have elucidated the roles of some antibiotics as QS agonists and antagonists. Graphical Abstract.
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Affiliation(s)
- Gregory O'Connor
- Department of Biochemistry and Molecular Biology, University of Miami, Miller School of Medicine, Miami, FL, 33136, USA
| | - Leslie D Knecht
- Department of Biochemistry and Molecular Biology, University of Miami, Miller School of Medicine, Miami, FL, 33136, USA.
- Department of Chemistry, University of Miami, Miami, FL, 33146, USA.
| | - Nelson Salgado
- Department of Biochemistry and Molecular Biology, University of Miami, Miller School of Medicine, Miami, FL, 33136, USA
| | - Sebastian Strobel
- Department of Biochemistry and Molecular Biology, University of Miami, Miller School of Medicine, Miami, FL, 33136, USA
| | - Patrizia Pasini
- Department of Biochemistry and Molecular Biology, University of Miami, Miller School of Medicine, Miami, FL, 33136, USA
| | - Sylvia Daunert
- Department of Biochemistry and Molecular Biology, University of Miami, Miller School of Medicine, Miami, FL, 33136, USA
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12
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Olivero-Verbel J, Barreto-Maya A, Bertel-Sevilla A, Stashenko EE. Composition, anti-quorum sensing and antimicrobial activity of essential oils from Lippia alba. Braz J Microbiol 2014; 45:759-67. [PMID: 25477905 PMCID: PMC4204956 DOI: 10.1590/s1517-83822014000300001] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2012] [Accepted: 03/14/2014] [Indexed: 01/15/2023] Open
Abstract
Many Gram-negative pathogens have the ability to produce N-acylhomoserine lactones (AHLs) as signal molecules for quorum sensing (QS). This cell-cell communication system allows them to coordinate gene expression and regulate virulence. Strategies to inhibit QS are promising for the control of infectious diseases or antibiotic resistant bacterial pathogens. The aim of the present study was to evaluate the anti-quorum sensing (anti-QS) and antibacterial potential of five essential oils isolated from Lippia alba on the Tn-5 mutant of Chromobacterium violaceum CV026, and on the growth of the gram-positive bacteria S. aureus ATCC 25923. The anti-QS activity was detected through the inhibition of the QS-controlled violacein pigment production by the sensor bacteria. Results showed that two essential oils from L. alba, one containing the greatest geranial:neral and the other the highest limonene:carvone concentrations, were the most effective QS inhibitors. Both oils also had small effects on cell growth. Moreover, the geranial/neral chemotype oil also produced the maximum zone of growth inhibition against S. aureus ATCC 25923. These data suggest essential oils from L. alba have promising properties as QS modulators, and present antibacterial activity on S. aureus.
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Affiliation(s)
- Jesus Olivero-Verbel
- Environmental and Computational Chemistry Group College of Pharmaceutical Sciences University of Cartagena Cartagena Colombia Environmental and Computational Chemistry Group, College of Pharmaceutical Sciences, University of Cartagena, Cartagena, Colombia
| | - Ana Barreto-Maya
- Environmental and Computational Chemistry Group College of Pharmaceutical Sciences University of Cartagena Cartagena Colombia Environmental and Computational Chemistry Group, College of Pharmaceutical Sciences, University of Cartagena, Cartagena, Colombia
| | - Angela Bertel-Sevilla
- Environmental and Computational Chemistry Group College of Pharmaceutical Sciences University of Cartagena Cartagena Colombia Environmental and Computational Chemistry Group, College of Pharmaceutical Sciences, University of Cartagena, Cartagena, Colombia
| | - Elena E Stashenko
- Chromatography Laboratory Research Centre for Biomolecules Industrial University of Santander Bucaramanga Colombia Chromatography Laboratory, Research Centre for Biomolecules, Industrial University of Santander, Bucaramanga, Colombia
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13
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Zimmer BL, May AL, Bhedi CD, Dearth SP, Prevatte CW, Pratte Z, Campagna SR, Richardson LL. Quorum sensing signal production and microbial interactions in a polymicrobial disease of corals and the coral surface mucopolysaccharide layer. PLoS One 2014; 9:e108541. [PMID: 25268348 PMCID: PMC4182479 DOI: 10.1371/journal.pone.0108541] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Accepted: 08/29/2014] [Indexed: 02/01/2023] Open
Abstract
Black band disease (BBD) of corals is a complex polymicrobial disease considered to be a threat to coral reef health, as it can lead to mortality of massive reef-building corals. The BBD community is dominated by gliding, filamentous cyanobacteria with a highly diverse population of heterotrophic bacteria. Microbial interactions such as quorum sensing (QS) and antimicrobial production may be involved in BBD disease pathogenesis. In this study, BBD (whole community) samples, as well as 199 bacterial isolates from BBD, the surface mucopolysaccharide layer (SML) of apparently healthy corals, and SML of apparently healthy areas of BBD-infected corals were screened for the production of acyl homoserine lactones (AHLs) and for autoinducer-2 (AI-2) activity using three bacterial reporter strains. AHLs were detected in all BBD (intact community) samples tested and in cultures of 5.5% of BBD bacterial isolates. Over half of a subset (153) of the isolates were positive for AI-2 activity. AHL-producing isolates were further analyzed using LC-MS/MS to determine AHL chemical structure and the concentration of (S)-4,5-dihydroxy-2,3-pentanedione (DPD), the biosynthetic precursor of AI-2. C6-HSL was the most common AHL variant detected, followed by 3OC4-HSL. In addition to QS assays, 342 growth challenges were conducted among a subset of the isolates, with 27% of isolates eliciting growth inhibition and 2% growth stimulation. 24% of BBD isolates elicited growth inhibition as compared to 26% and 32% of the bacteria from the two SML sources. With one exception, only isolates that exhibited AI-2 activity or produced DPD inhibited growth of test strains. These findings demonstrate for the first time that AHLs are present in an active coral disease. It is possible that AI-2 production among BBD and coral SML bacteria may structure the microbial communities of both a polymicrobial infection and the healthy coral microbiome.
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Affiliation(s)
- Beth L. Zimmer
- Department of Biological Sciences, Florida International University, Miami, Florida, United States of America
- Atkins North America, Miami, Florida, United States of America
| | - Amanda L. May
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee, United States of America
| | - Chinmayee D. Bhedi
- Department of Biological Sciences, Florida International University, Miami, Florida, United States of America
| | - Stephen P. Dearth
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee, United States of America
| | - Carson W. Prevatte
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee, United States of America
| | - Zoe Pratte
- Department of Biological Sciences, Florida International University, Miami, Florida, United States of America
| | - Shawn R. Campagna
- Department of Chemistry, University of Tennessee, Knoxville, Tennessee, United States of America
| | - Laurie L. Richardson
- Department of Biological Sciences, Florida International University, Miami, Florida, United States of America
- * E-mail:
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Purohit AA, Johansen JA, Hansen H, Leiros HKS, Kashulin A, Karlsen C, Smalås A, Haugen P, Willassen NP. Presence of acyl-homoserine lactones in 57 members of the Vibrionaceae family. J Appl Microbiol 2013; 115:835-47. [PMID: 23725044 PMCID: PMC3910146 DOI: 10.1111/jam.12264] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Revised: 05/10/2013] [Accepted: 05/25/2013] [Indexed: 12/27/2022]
Abstract
AIMS The aim of this study was to use a sensitive method to screen and quantify 57 Vibrionaceae strains for the production of acyl-homoserine lactones (AHLs) and map the resulting AHL profiles onto a host phylogeny. METHODS AND RESULTS We used a high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS/MS) protocol to measure AHLs in spent media after bacterial growth. First, the presence/absence of AHLs (qualitative analysis) was measured to choose internal standard for subsequent quantitative AHL measurements. We screened 57 strains from three genera (Aliivibrio, Photobacterium and Vibrio) of the same family (i.e. Vibrionaceae). Our results show that about half of the isolates produced multiple AHLs, typically at 25-5000 nmol l(-1) . CONCLUSIONS This work shows that production of AHL quorum sensing signals is found widespread among Vibrionaceae bacteria and that closely related strains typically produce similar AHL profiles. SIGNIFICANCE AND IMPACT OF THE STUDY The AHL detection protocol presented in this study can be applied to a broad range of bacterial samples and may contribute to a wider mapping of AHL production in bacteria, for example, in clinically relevant strains.
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Affiliation(s)
- A A Purohit
- The Norwegian Structural Biology Centre, University of Tromsø, Tromsø, Norway
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Cataldi TRI, Bianco G, Fonseca J, Schmitt-Kopplin P. Perceiving the chemical language of Gram-negative bacteria: listening by high-resolution mass spectrometry. Anal Bioanal Chem 2012; 405:493-507. [PMID: 22986985 DOI: 10.1007/s00216-012-6371-2] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2012] [Revised: 08/06/2012] [Accepted: 08/17/2012] [Indexed: 01/27/2023]
Abstract
Gram-negative bacteria use N-acylhomoserine lactones (AHLs) as their command language to coordinate population behavior during invasion and colonization of higher organisms. Although many different bacterial bioreporters are available for AHLs monitoring, in which a phenotypic response, e.g. bioluminescence, violacin production, and β-galactosidase activity, is exploited, mass spectrometry (MS) is the most versatile detector for rapid analysis of AHLs in complex microbial samples, with or without prior separation steps. In this paper we critically review recent advances in the application of high-resolution MS to analysis of the quorum sensing (QS) signaling molecules used by Gram-negative bacteria, with much emphasis on AHLs. A critical review of the use of bioreporters in the study of AHLs is followed by a short methodological survey of the capabilities of high-resolution mass spectrometry (HRMS), including Fourier-transform ion cyclotron resonance (FTICR) MS and quadrupole time-of-flight (qTOF) MS. Use of infusion electrospray ultrahigh-resolution FTICR MS (12 Tesla) enables accurate mass measurements for determination of the elemental formulas of AHLs in Acidovorax sp. N35 and Burkholderia ubonensis AB030584. Results obtained by coupling liquid chromatography with a hybrid quadrupole linear ion trap-FTICR mass spectrometer (LC-LTQ-FTICRMS, 7-T) for characterization of acylated homoserine lactones in the human pathogen Pseudomonas aeruginosa are presented. UPLC-ESI-qTOF MS has also proved to be suitable for identification of 3O-C(10)HSL in Pseudomonas putida IsoF cell culture supernatant. Aspects of sample preparation and the avoidance of analytical pitfalls are also emphasized.
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Affiliation(s)
- Tommaso R I Cataldi
- Dipartimento di Chimica, Università degli Studi di Bari Aldo Moro, Bari, Italy.
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