All Outputs (18)

RsaL-driven negative regulation promotes heterogeneity in Pseudomonas aeruginosa quorum sensing (2023)
Journal Article
Mellini, M., Letizia, M., Caruso, L., Guiducci, A., Meneghini, C., Heeb, S., Williams, P., Cámara, M., Visca, P., Imperi, F., Leoni, L., & Rampioni, G. (2023). RsaL-driven negative regulation promotes heterogeneity in Pseudomonas aeruginosa quorum sensing. mBio, 14(6), Article e02039-23. https://doi.org/10.1128/mbio.02039-23

In its canonical interpretation, quorum sensing (QS) allows single cells in a bacterial population to synchronize gene expression and hence perform specific tasks collectively once the quorum cell density is reached. However, growing evidence in diff... Read More about RsaL-driven negative regulation promotes heterogeneity in Pseudomonas aeruginosa quorum sensing.

Alkyl-quinolone-dependent quorum sensing controls prophage-mediated autolysis in Pseudomonas aeruginosa colony biofilms (2023)
Journal Article
Giallonardi, G., Letizia, M., Mellini, M., Frangipani, E., Halliday, N., Heeb, S., …Rampioni, G. (2023). Alkyl-quinolone-dependent quorum sensing controls prophage-mediated autolysis in Pseudomonas aeruginosa colony biofilms. Frontiers in Cellular and Infection Microbiology, 13, Article 1183681. https://doi.org/10.3389/fcimb.2023.1183681

Pseudomonas aeruginosa is a model quorum sensing (QS) pathogen with three interconnected QS circuits that control the production of virulence factors and antibiotic tolerant biofilms. The pqs QS system of P. aeruginosa is responsible for the biosynth... Read More about Alkyl-quinolone-dependent quorum sensing controls prophage-mediated autolysis in Pseudomonas aeruginosa colony biofilms.

Actinomadura graeca sp. nov.: A novel producer of the macrocyclic antibiotic zelkovamycin (2021)
Journal Article
Tarantini, F. S., Brunati, M., Taravella, A., Carrano, L., Parenti, F., Hong, K. W., …Chan, W. C. (2021). Actinomadura graeca sp. nov.: A novel producer of the macrocyclic antibiotic zelkovamycin. PLoS ONE, 16(11), Article e0260413. https://doi.org/10.1371/journal.pone.0260413

As part of a screening programme for antibiotic-producing bacteria, a novel Actinomadura species was discovered from a soil sample collected in Santorini, Greece. Preliminary 16S rRNA gene sequence comparisons highlighted Actinomadura macra as the mo... Read More about Actinomadura graeca sp. nov.: A novel producer of the macrocyclic antibiotic zelkovamycin.

Disruption of the Pseudomonas aeruginosa Tat system perturbs PQS-dependent quorum sensing and biofilm maturation through lack of the Rieske cytochrome bc1sub-unit (2021)
Journal Article
Soh, E. Y.-C., Smith, F., Gimenez, M. R., Yang, L., Vejborg, R. M., Fletcher, M., …Williams, P. (2021). Disruption of the Pseudomonas aeruginosa Tat system perturbs PQS-dependent quorum sensing and biofilm maturation through lack of the Rieske cytochrome bc1sub-unit. PLoS Pathogens, 17(8), Article e1009425. https://doi.org/10.1371/journal.ppat.1009425

Extracellular DNA (eDNA) is a major constituent of the extracellular matrix of Pseudomonas aeruginosa biofilms and its release is regulated via pseudomonas quinolone signal (PQS) dependent quorum sensing (QS). By screening a P. aeruginosa transposon... Read More about Disruption of the Pseudomonas aeruginosa Tat system perturbs PQS-dependent quorum sensing and biofilm maturation through lack of the Rieske cytochrome bc1sub-unit.

Genome-Wide Analysis of Targets for Post-Transcriptional Regulation by Rsm Proteins in Pseudomonas putida (2021)
Journal Article
Huertas-Rosales, Ó., Romero, M., Chan, K. G., Hong, K.-W., Camara, M., Heeb, S., …Espinosa-Urgel, M. (2021). Genome-Wide Analysis of Targets for Post-Transcriptional Regulation by Rsm Proteins in Pseudomonas putida. Frontiers in Molecular Biosciences, 8, Article 624061. https://doi.org/10.3389/fmolb.2021.624061

© Copyright © 2021 Huertas-Rosales, Romero, Chan, Hong, Cámara, Heeb, Barrientos-Moreno, Molina-Henares, Travieso, Ramos-González and Espinosa-Urgel. Post-transcriptional regulation is an important step in the control of bacterial gene expression in... Read More about Genome-Wide Analysis of Targets for Post-Transcriptional Regulation by Rsm Proteins in Pseudomonas putida.

Differential regulation of the phenazine biosynthetic operons by quorum sensing in Pseudomonas aeruginosa PAO1-N (2018)
Journal Article
Higgins, S., Heeb, S., Rampioni, G., Fletcher, M. P., Williams, P., & Cámara, M. (2018). Differential regulation of the phenazine biosynthetic operons by quorum sensing in Pseudomonas aeruginosa PAO1-N. Frontiers in Cellular and Infection Microbiology, 8, Article 252. https://doi.org/10.3389/fcimb.2018.00252

The Pseudomonas aeruginosa quorum sensing (QS) network plays a key role in the adaptation to environmental changes and the control of virulence factor production in this opportunistic human pathogen. Three interlinked QS systems, namely las, rhl, and... Read More about Differential regulation of the phenazine biosynthetic operons by quorum sensing in Pseudomonas aeruginosa PAO1-N.

Functional identification of the prnABCD operon and its regulation in Serratia plymuthica (2018)
Journal Article
Liu, X., Yu, X., Yang, Y., Heeb, S., Gao, S., Chan, K. G., …Gao, K. (in press). Functional identification of the prnABCD operon and its regulation in Serratia plymuthica. Applied Microbiology and Biotechnology, https://doi.org/10.1007/s00253-018-8857-0

The antibiotic pyrrolnitrin (PRN) is a tryptophan-derived secondary metabolite that plays an important role in the biocontrol of plant diseases due to its broad-spectrum of antimicrobial activities. The PRN biosynthetic gene cluster remains to be cha... Read More about Functional identification of the prnABCD operon and its regulation in Serratia plymuthica.

In Silico and in Vitro-Guided Identification of Inhibitors of Alkylquinolone-Dependent Quorum Sensing in Pseudomonas aeruginosa (2018)
Journal Article
Soukarieh, F., Vico Oton, E., Dubern, J.-F., Gomes, J., Halliday, N., de Pilar Crespo, M., …Cámara, M. (2018). In Silico and in Vitro-Guided Identification of Inhibitors of Alkylquinolone-Dependent Quorum Sensing in Pseudomonas aeruginosa. Molecules, 23(2), 1-15. https://doi.org/10.3390/molecules23020257

Pseudomonas aeruginosa is a major opportunistic pathogen in cystic fibrosis, wound and nosocomial infections, posing a serious burden to public health, due to its antibiotic resistance. The P. aeruginosa Pseudomonas Quinolone System (pqs) quorum sens... Read More about In Silico and in Vitro-Guided Identification of Inhibitors of Alkylquinolone-Dependent Quorum Sensing in Pseudomonas aeruginosa.

Optimised chronic infection models demonstrate that siderophore 'cheating' in Pseudomonas aeruginosa is context specific (2017)
Journal Article
Diggle, S. P., da Silva, A. C., Harrison, F., McNally, A., Da Silva, A. C., Heeb, S., & Diggle, S. P. (2017). Optimised chronic infection models demonstrate that siderophore 'cheating' in Pseudomonas aeruginosa is context specific. ISME Journal, 11(11), 2492-2509. https://doi.org/10.1038/ismej.2017.103

© 2017 International Society for Microbial Ecology All rights reserved. The potential for siderophore mutants of Pseudomonas aeruginosa to attenuate virulence during infection, and the possibility of exploiting this for clinical ends, have attracted... Read More about Optimised chronic infection models demonstrate that siderophore 'cheating' in Pseudomonas aeruginosa is context specific.

Identification of a Pseudomonas aeruginosa PAO1 DNA methyltransferase, its Targets, and physiological roles (2017)
Journal Article
Doberenz, S., Eckweiler, D., Reichert, O., Jensen, V., Bunk, B., Spröer, C., …Häussler, S. (2017). Identification of a Pseudomonas aeruginosa PAO1 DNA methyltransferase, its Targets, and physiological roles. mBio, 8(1), Article e02312-16. https://doi.org/10.1128/mBio.02312-16

DNA methylation is widespread among prokaryotes, and most DNA methylation reactions are catalyzed by adenine DNA methyltransferases, which are part of restriction-modification (R-M) systems. R-M systems are known for their role in the defense against... Read More about Identification of a Pseudomonas aeruginosa PAO1 DNA methyltransferase, its Targets, and physiological roles.

Unravelling the Genome-Wide Contributions of Specific 2-Alkyl-4-Quinolones and PqsE to Quorum Sensing in Pseudomonas aeruginosa (2016)
Journal Article
Rampioni, G., Falcone, M., Heeb, S., Frangipani, E., Fletcher, M. P., Dubern, J.-F., …Williams, P. (2016). Unravelling the Genome-Wide Contributions of Specific 2-Alkyl-4-Quinolones and PqsE to Quorum Sensing in Pseudomonas aeruginosa. PLoS Pathogens, 12(11), e1006029. https://doi.org/10.1371/journal.ppat.1006029

The pqs quorum sensing (QS) system is crucial for Pseudomonas aeruginosa virulence both in vitro and in animal models of infection and is considered an ideal target for the development of anti-virulence agents. However, the precise role played by eac... Read More about Unravelling the Genome-Wide Contributions of Specific 2-Alkyl-4-Quinolones and PqsE to Quorum Sensing in Pseudomonas aeruginosa.

When genome-based approach meets the “Old but Good”: revealing genes involved in the antibacterial activity of Pseudomonas sp. P482 against soft rot pathogens (2016)
Journal Article
Krzyżanowska, D. M., Ossowicki, A., Rajewska, M., Maciąg, T., Jabłońska, M., Obuchowski, M., …Jafra, S. (2016). When genome-based approach meets the “Old but Good”: revealing genes involved in the antibacterial activity of Pseudomonas sp. P482 against soft rot pathogens. Frontiers in Microbiology, 7, Article 782. https://doi.org/10.3389/fmicb.2016.00782

Dickeya solani and Pectobacterium carotovorum subsp. brasiliense are recently established species of bacterial plant pathogens causing black leg and soft rot of many vegetables and ornamental plants. Pseudomonas sp. strain P482 inhibits the growth of... Read More about When genome-based approach meets the “Old but Good”: revealing genes involved in the antibacterial activity of Pseudomonas sp. P482 against soft rot pathogens.

Synthesis and cell-free cloning of DNA libraries using programmable microfluidics (2015)
Journal Article
Ben Yehezkel, T., Rival, A., Raz, O., Cohen, R., Marx, Z., Cámara, M., …Shapiro, E. (2016). Synthesis and cell-free cloning of DNA libraries using programmable microfluidics. Nucleic Acids Research, 44(4), e35. https://doi.org/10.1093/nar/gkv1087

Microfluidics may revolutionize our ability to write synthetic DNA by addressing several fundamental limitations associated with generating novel genetic constructs. Here we report the first de novo synthesis and cell-free cloning of custom DNA libra... Read More about Synthesis and cell-free cloning of DNA libraries using programmable microfluidics.

Clinical utilization of genomics data produced by the international Pseudomonas aeruginosa consortium (2015)
Journal Article
Freschi, L., Jeukens, J., Kukavica-Ibrulj, I., Boyle, B., Dupont, M.-J., Laroche, J., …Levesque, R. C. (in press). Clinical utilization of genomics data produced by the international Pseudomonas aeruginosa consortium. Frontiers in Microbiology, 6(1036), https://doi.org/10.3389/fmicb.2015.01036

The International Pseudomonas aeruginosa Consortium is sequencing over 1000 genomes and building an analysis pipeline for the study of Pseudomonas genome evolution, antibiotic resistance and virulence genes. Metadata, including genomic and phenotypic... Read More about Clinical utilization of genomics data produced by the international Pseudomonas aeruginosa consortium.

Biotic inactivation of the Pseudomonas aeruginosa quinolone signal molecule (2015)
Journal Article
Soh, E. Y.-C., Chhabra, S. R., Halliday, N., Heeb, S., Müller, C., Birmes, F. S., …Williams, P. (2015). Biotic inactivation of the Pseudomonas aeruginosa quinolone signal molecule. Environmental Microbiology, 17(11), https://doi.org/10.1111/1462-2920.12857

In Pseudomonas aeruginosa, quorum sensing (QS) regulates the production of secondary metabolites, many of which are antimicrobials that impact on polymicrobial community composition. Consequently, quenching QS modulates the environmental impact of P.... Read More about Biotic inactivation of the Pseudomonas aeruginosa quinolone signal molecule.

Granulocyte-macrophage colony stimulatory factor enhances the pro-inflammatory response of interferon-γ-treated macrophages to pseudomonas aeruginosa infection (2015)
Journal Article
Singh, S., Barr, H. L., Liu, Y.-C., Robins, A., Heeb, S., Williams, P., …Martinez-Pomares, L. (2015). Granulocyte-macrophage colony stimulatory factor enhances the pro-inflammatory response of interferon-γ-treated macrophages to pseudomonas aeruginosa infection. PLoS ONE, 10(2), Article e0117447. https://doi.org/10.1371/journal.pone.0117447

Pseudomonas aeruginosa is an opportunistic pathogen that can cause severe infections at compromised epithelial surfaces, such those found in burns, wounds, and in lungs damaged by mechanical ventilation or recurrent infections, particularly in cystic... Read More about Granulocyte-macrophage colony stimulatory factor enhances the pro-inflammatory response of interferon-γ-treated macrophages to pseudomonas aeruginosa infection.

A sequence-based approach for prediction of CsrA/RsmA targets in bacteria with experimental validation in Pseudomonas aeruginosa (2014)
Journal Article
Kulkarni, P. R., Jia, T., Kuehne, S. H., Kerkering, T. M., Morris, E. R., Searle, M. S., …Kulkarni, R. V. (in press). A sequence-based approach for prediction of CsrA/RsmA targets in bacteria with experimental validation in Pseudomonas aeruginosa. Nucleic Acids Research, 42(11), https://doi.org/10.1093/nar/gku309

CsrA/RsmA homologs are an extensive family of ribonucleic acid (RNA)-binding proteins that function as global post-transcriptional regulators controlling important cellular processes such as secondary metabolism, motility, biofilm formation and the p... Read More about A sequence-based approach for prediction of CsrA/RsmA targets in bacteria with experimental validation in Pseudomonas aeruginosa.

A novel virulence strategy for Pseudomonas aeruginosa mediated by an autotransporter with arginine-specific aminopeptidase activity (2012)
Journal Article
Luckett, J., Darch, O., Watters, C., AbuOun, M., Wright, V., Paredes-Osses, E., …Hardie, K. R. (2012). A novel virulence strategy for Pseudomonas aeruginosa mediated by an autotransporter with arginine-specific aminopeptidase activity. PLoS Pathogens, 8(8), Article e1002854. https://doi.org/10.1371/journal.ppat.1002854

The opportunistic human pathogen, Pseudomonas aeruginosa, is a major cause of infections in chronic wounds, burns and the lungs of cystic fibrosis patients. The P. aeruginosa genome encodes at least three proteins exhibiting the characteristic three... Read More about A novel virulence strategy for Pseudomonas aeruginosa mediated by an autotransporter with arginine-specific aminopeptidase activity.