Professor MIGUEL CAMARA's Outputs (62)

The Quorum Sensing Regulated sRNA Lrs1 Is Involved in the Adaptation to Low Iron in Pseudomonas aeruginosa (2025)
Journal Article
Panagiotopoulou, D., Catalán, N. R., Wilcox, M., Halliday, N., Pantalone, P., Lazenby, J., Cámara, M., & Heeb, S. (2025). The Quorum Sensing Regulated sRNA Lrs1 Is Involved in the Adaptation to Low Iron in Pseudomonas aeruginosa. Environmental Microbiology Reports, 17(2), Article e70090. https://doi.org/10.1111/1758-2229.70090

Iron is an essential nutrient for microbial growth. The opportunistic pathogen Pseudomonas aeruginosa can survive under diverse conditions, including iron-depleted environments with the aid of small non-coding RNAs (sRNAs). P. aeruginosa also uses th... Read More about The Quorum Sensing Regulated sRNA Lrs1 Is Involved in the Adaptation to Low Iron in Pseudomonas aeruginosa.

Triblock copolymer micelles enhance solubility, permeability and activity of a quorum sensing inhibitor against Pseudomonas aeruginosa biofilms (2024)
Journal Article
Kasza, K., Soukarieh, F., Romero, M., Hardie, K. R., Gurnani, P., Cámara, M., & Alexander, C. (2024). Triblock copolymer micelles enhance solubility, permeability and activity of a quorum sensing inhibitor against Pseudomonas aeruginosa biofilms. RSC Applied Polymers, 2(3), 444-455. https://doi.org/10.1039/D3LP00208J

Antimicrobial resistance is a threat to public health for which new treatments are urgently required. The capability of bacteria to form biofilms is of particular concern as it enables high bacterial tolerance to conventional therapies by reducing dr... Read More about Triblock copolymer micelles enhance solubility, permeability and activity of a quorum sensing inhibitor against Pseudomonas aeruginosa biofilms.

Development, characterization, and evaluation of a simple polymicrobial colony biofilm model for testing of antimicrobial wound dressings (2024)
Journal Article
Robertson, S. N., Romero, M., Fenn, S., Riedi, P. L. K., & Cámara, M. (2024). Development, characterization, and evaluation of a simple polymicrobial colony biofilm model for testing of antimicrobial wound dressings. Journal of Applied Microbiology, 135(3), Article lxae042. https://doi.org/10.1093/jambio/lxae042

Chronic wound infections are generally of polymicrobial nature with aerobic and anaerobic bacteria, as well as fungi frequently observed in them. Wound treatment involves a series of steps, including debridement of the wound, flushing, and often the... Read More about Development, characterization, and evaluation of a simple polymicrobial colony biofilm model for testing of antimicrobial wound dressings.

Ciprofloxacin poly(β-amino ester) conjugates enhance antibiofilm activity and slow the development of resistance (2024)
Journal Article
Kasza, K., Richards, B., Jones, S., Romero, M., Robertson, S. N., Hardie, K. R., Gurnani, P., Cámara, M., & Alexander, C. (2024). Ciprofloxacin poly(β-amino ester) conjugates enhance antibiofilm activity and slow the development of resistance. ACS Applied Materials and Interfaces, 16(5), 5412-5425. https://doi.org/10.1021/acsami.3c14357

To tackle the emerging antibiotic resistance crisis, novel antimicrobial approaches are urgently needed. Bacterial biofilms are a particular concern in this context as they are responsible for over 80% of bacterial infections and are inherently more... Read More about Ciprofloxacin poly(β-amino ester) conjugates enhance antibiofilm activity and slow the development of resistance.

Design, Synthesis, and Evaluation of New 1H-Benzo[d]imidazole Based PqsR Inhibitors as Adjuvant Therapy for Pseudomonas aeruginosa Infections (2024)
Journal Article
Soukarieh, F., Mashabi, A., Richardson, W., Oton, E. V., Romero, M., Dubern, J.-F., Robertson, S. N., Lucanto, S., Markham-Lee, Z., Sou, T., Kukavica-Ibrulj, I., Levesque, R. C., Bergstrom, C. A., Halliday, N., Kellam, B., Emsley, J., Heeb, S., Williams, P., Stocks, M. J., & Cámara, M. (2024). Design, Synthesis, and Evaluation of New 1H-Benzo[d]imidazole Based PqsR Inhibitors as Adjuvant Therapy for Pseudomonas aeruginosa Infections. Journal of Medicinal Chemistry, 67(2), 1008-1023. https://doi.org/10.1021/acs.jmedchem.3c00973

Pseudomonas aeruginosa is one of the top priority pathogens that requires immediate attention according to the World Health Organisation (WHO). Due to the alarming shortage of novel antimicrobials, targeting quorum sensing (QS), a bacterial cell to c... Read More about Design, Synthesis, and Evaluation of New 1H-Benzo[d]imidazole Based PqsR Inhibitors as Adjuvant Therapy for Pseudomonas aeruginosa Infections.

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.

Growth rate and nutrient limitation as key drivers of extracellular quorum sensing signal molecule accumulation in Pseudomonas aeruginosa (2023)
Journal Article
Dubern, J.-F., Halliday, N., Cámara, M., Winzer, K., Barrett, D. A., Hardie, K. R., & Williams, P. (2023). Growth rate and nutrient limitation as key drivers of extracellular quorum sensing signal molecule accumulation in Pseudomonas aeruginosa. Microbiology, 169(4), Article 001316. https://doi.org/10.1099/mic.0.001316

In Pseudomonas aeruginosa, quorum sensing (QS) depends on an interconnected regulatory hierarchy involving the Las, Rhl and Pqs systems, which are collectively responsible for the co-ordinated synthesis of a diverse repertoire of N-acylhomoserine lac... Read More about Growth rate and nutrient limitation as key drivers of extracellular quorum sensing signal molecule accumulation in Pseudomonas aeruginosa.

Probing Interkingdom Signaling Molecules via Liquid Extraction Surface Analysis-Mass Spectrometry (2023)
Journal Article
Robertson, S. N., Soukarieh, F., White, T. M., Camara, M., Romero, M., & Griffiths, R. L. (2023). Probing Interkingdom Signaling Molecules via Liquid Extraction Surface Analysis-Mass Spectrometry. Analytical Chemistry, 95(11), 5079-5086. https://doi.org/10.1021/acs.analchem.2c05703

Previously, metabolites diffused or secreted from microbial samples have been analyzed via liquid chromatography–mass spectrometry (LC–MS) approaches following lengthy extraction protocols. Here, we present a model system for growing biofilms on disc... Read More about Probing Interkingdom Signaling Molecules via Liquid Extraction Surface Analysis-Mass Spectrometry.

Design of Quorum Sensing Inhibitor–Polymer Conjugates to Penetrate Pseudomonas aeruginosa Biofilms (2023)
Journal Article
Soukarieh, F., Gurnani, P., Romero, M., Halliday, N., Stocks, M., Alexander, C., & Cámara, M. (2023). Design of Quorum Sensing Inhibitor–Polymer Conjugates to Penetrate Pseudomonas aeruginosa Biofilms. ACS Macro Letters, 12(3), 314-319. https://doi.org/10.1021/acsmacrolett.2c00699

Antimicrobial resistance (AMR) is a global threat to public health with a forecast of a negative financial impact of one trillion dollars per annum, hence novel therapeutics are urgently needed. The resistance of many bacteria against current drugs i... Read More about Design of Quorum Sensing Inhibitor–Polymer Conjugates to Penetrate Pseudomonas aeruginosa Biofilms.

Supporting the strategic pillars of translational research in biofilms (2022)
Journal Article
Camara, M., & Filloux, A. (2022). Supporting the strategic pillars of translational research in biofilms. npj Biofilms and Microbiomes, 8(1), Article 90. https://doi.org/10.1038/s41522-022-00354-4

It is now widely accepted that most microorganisms live within communities and not as single cells. The interaction between species within the community drives the behaviour of the population and its adaptation to various ecosystems and hosts. This r... Read More about Supporting the strategic pillars of translational research in biofilms.

ToxR is a c-di-GMP binding protein that modulates surface-associated behaviour in Pseudomonas aeruginosa (2022)
Journal Article
Camara, M., Dubern, J., Romero, M., Mai-Prochnow, A., Messina, M., Trampari, E., Gijzel, H. N.-V., Chan, K.-G., Carabelli, A., Barraud, N., Lazenby, J., Chen, Y., Robertson, S., Malone, J., Williams, P., & Heeb, S. (2022). ToxR is a c-di-GMP binding protein that modulates surface-associated behaviour in Pseudomonas aeruginosa. npj Biofilms and Microbiomes, 8, Article 64. https://doi.org/10.1038/s41522-022-00325-9

Pseudomonas aeruginosa uses multiple protein regulators that work in tandem to control the production of a wide range of virulence factors and facilitate rapid adaptation to diverse environmental conditions. In this opportunistic pathogen, ToxR was k... Read More about ToxR is a c-di-GMP binding protein that modulates surface-associated behaviour in Pseudomonas aeruginosa.

Symbiopectobacterium purcellii, gen. nov., sp. nov., isolated from the leafhopper Empoasca decipiens (2022)
Journal Article
Nadal-Jimenez, P., Siozios, S., Halliday, N., Cámara, M., & Hurst, G. D. D. (2022). Symbiopectobacterium purcellii, gen. nov., sp. nov., isolated from the leafhopper Empoasca decipiens. International Journal of Systematic and Evolutionary Microbiology, 72(6), Article 005440. https://doi.org/10.1099/ijsem.0.005440

Bacterial endosymbionts are found in multiple arthropod species, where they play crucial roles as nutritional symbionts, defensive symbionts or reproductive parasites. Recent work has highlighted a new clade of heritable microbes within the gammaprot... Read More about Symbiopectobacterium purcellii, gen. nov., sp. nov., isolated from the leafhopper Empoasca decipiens.

Economic significance of biofilms: a multidisciplinary and cross-sectoral challenge (2022)
Journal Article
Cámara, M., Green, W., MacPhee, C. E., Rakowska, P. D., Raval, R., Richardson, M. C., Slater-Jefferies, J., Steventon, K., & Webb, J. S. (2022). Economic significance of biofilms: a multidisciplinary and cross-sectoral challenge. npj Biofilms and Microbiomes, 8(1), Article 42. https://doi.org/10.1038/s41522-022-00306-y

The increasing awareness of the significance of microbial biofilms across different sectors is continuously revealing new areas of opportunity in the development of innovative technologies in translational research, which can address their detrimenta... Read More about Economic significance of biofilms: a multidisciplinary and cross-sectoral challenge.

Porphyromonas pasteri and Prevotella nanceiensis in the sputum microbiota are associated with increased decline in lung function in individuals with cystic fibrosis (2022)
Journal Article
Webb, K., Zain, N. M. M., Stewart, I., Fogarty, A., Nash, E. F., Whitehouse, J. L., Smyth, A. R., Lilley, A. K., Knox, A., Williams, P., Cámara, M., Bruce, K., & Barr, H. L. (2022). Porphyromonas pasteri and Prevotella nanceiensis in the sputum microbiota are associated with increased decline in lung function in individuals with cystic fibrosis. Journal of Medical Microbiology, 71(2), Article 001481. https://doi.org/10.1099/jmm.0.001481

Although anaerobic bacteria exist in abundance in cystic fibrosis (CF) airways, their role in disease progression is poorly understood. We hypothesized that the presence and relative abundance of the most prevalent, live, anaerobic bacteria in sputum... Read More about Porphyromonas pasteri and Prevotella nanceiensis in the sputum microbiota are associated with increased decline in lung function in individuals with cystic fibrosis.

Carbohydrates from Pseudomonas aeruginosa biofilms interact with immune C-type lectins and interfere with their receptor function (2021)
Journal Article
Singh, S., Almuhanna, Y., Alshahrani, M. Y., Lowman, D. W., Rice, P. J., Gell, C., Ma, Z., Graves, B., Jackson, D., Lee, K., Juarez, R., Koranteng, J., Muntaka, S., Mitchell, D. A., da Silva, A. C., Hussain, F., Yilmaz, G., Mastrotto, F., Irie, Y., Williams, P., …Martinez-Pomares, L. (2021). Carbohydrates from Pseudomonas aeruginosa biofilms interact with immune C-type lectins and interfere with their receptor function. npj Biofilms and Microbiomes, 7(1), Article 87. https://doi.org/10.1038/s41522-021-00257-w

Bacterial biofilms represent a challenge to the healthcare system because of their resilience against antimicrobials and immune attack. Biofilms consist of bacterial aggregates embedded in an extracellular polymeric substance (EPS) composed of polysa... Read More about Carbohydrates from Pseudomonas aeruginosa biofilms interact with immune C-type lectins and interfere with their receptor function.

2-Alkyl-4-quinolone quorum sensing molecules are biomarkers for culture-independent Pseudomonas aeruginosa burden in adults with cystic fibrosis (2021)
Journal Article
Zain, N. M. M., Webb, K., Stewart, I., Halliday, N., Barrett, D. A., Nash, E. F., Whitehouse, J. L., Honeybourne, D., Smyth, A. R., Forrester, D. L., Knox, A. J., Williams, P., Fogarty, A., Cámara, M., Bruce, K. D., & Barr, H. L. (2021). 2-Alkyl-4-quinolone quorum sensing molecules are biomarkers for culture-independent Pseudomonas aeruginosa burden in adults with cystic fibrosis. Journal of Medical Microbiology, 70(10), https://doi.org/10.1099/jmm.0.001420

Introduction. Pseudomonas aeruginosa produces quorum sensing signalling molecules including 2-alkyl-4-quinolones (AQs), which regulate virulence factor production in the cystic fibrosis (CF) airways. Hypothesis/Gap statement. Culture can lead to cond... Read More about 2-Alkyl-4-quinolone quorum sensing molecules are biomarkers for culture-independent Pseudomonas aeruginosa burden in adults with cystic fibrosis.

Novel detection of specific bacterial quorum sensing molecules in saliva: Potential non-invasive biomarkers for pulmonary Pseudomonas aeruginosa in cystic fibrosis (2021)
Journal Article
Webb, K., Cámara, M., Zain, N. M. M., Halliday, N., Bruce, K. D., Nash, E. F., Whitehouse, J. L., Knox, A., Forrester, D., Smyth, A. R., Williams, P., Fogarty, A., & Barr, H. L. (2022). Novel detection of specific bacterial quorum sensing molecules in saliva: Potential non-invasive biomarkers for pulmonary Pseudomonas aeruginosa in cystic fibrosis. Journal of Cystic Fibrosis, 21(4), 626-629. https://doi.org/10.1016/j.jcf.2021.08.030

Pseudomonas aeruginosa produces specific signalling molecules, 2-alkyl-4-quinolones (AQs) that are detectable in the sputum of adults with cystic fibrosis (CF) and who have pulmonary infection with this opportunistic pathogen. This study aimed to det... Read More about Novel detection of specific bacterial quorum sensing molecules in saliva: Potential non-invasive biomarkers for pulmonary Pseudomonas aeruginosa in cystic fibrosis.

Design and Evaluation of New Quinazolin-4(3 H)-one Derived PqsR Antagonists as Quorum Sensing Quenchers in Pseudomonas aeruginosa (2021)
Journal Article
Soukarieh, F., Mashabi, A., Richardson, W., Oton, E. V., Romero, M., Roberston, S. N., Grossman, S., Sou, T., Liu, R., Halliday, N., Kukavica-Ibrulj, I., Levesque, R. C., Bergstrom, C. A. S., Kellam, B., Emsley, J., Heeb, S., Williams, P., Stocks, M. J., & Cámara, M. (2021). Design and Evaluation of New Quinazolin-4(3 H)-one Derived PqsR Antagonists as Quorum Sensing Quenchers in Pseudomonas aeruginosa. ACS Infectious Diseases, 7(9), 2666-2685. https://doi.org/10.1021/acsinfecdis.1c00175

P. aeruginosa (PA) continues to pose a threat to global public health due to its high levels of antimicrobial resistance (AMR). The ongoing AMR crisis has led to an alarming shortage of effective treatments for resistant microbes, and hence there is... Read More about Design and Evaluation of New Quinazolin-4(3 H)-one Derived PqsR Antagonists as Quorum Sensing Quenchers in Pseudomonas aeruginosa.

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., Halliday, N., Bleves, S., Heeb, S., Camara, M., Givskov, M., Hardie, K. R., Tolker-Nielsen, T., Ize, B., & 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.

NirA Is an Alternative Nitrite Reductase from Pseudomonas aeruginosa with Potential as an Antivirulence Target (2021)
Journal Article
Fenn, S., Dubern, J.-F., Cigana, C., De Simone, M., Lazenby, J., Juhas, M., Schwager, S., Bianconi, I., Döring, G., Elmsley, J., Eberl, L., Williams, P., Bragonzi, A., & Cámara, M. (2021). NirA Is an Alternative Nitrite Reductase from Pseudomonas aeruginosa with Potential as an Antivirulence Target. mBio, 12(2), Article e00207-21. https://doi.org/10.1128/mbio.00207-21

The opportunistic pathogen Pseudomonas aeruginosa produces an arsenal of virulence factors causing a wide range of diseases in multiple hosts and is difficult to eradicate due to its intrinsic resistance to antibiotics. With the antibacterial pipelin... Read More about NirA Is an Alternative Nitrite Reductase from Pseudomonas aeruginosa with Potential as an Antivirulence Target.