All Outputs (105)

Immune Modulation by Design: Using Topography to Control Human Monocyte Attachment and Macrophage Differentiation (2020)
Journal Article
Vassey, M. J., Figueredo, G. P., Scurr, D. J., Vasilevich, A. S., Vermeulen, S., Carlier, A., …Alexander, M. R. (2020). Immune Modulation by Design: Using Topography to Control Human Monocyte Attachment and Macrophage Differentiation. Advanced Science, 7(11), https://doi.org/10.1002/advs.201903392

© 2020 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim Macrophages play a central role in orchestrating immune responses to foreign materials, which are often responsible for the failure of implanted medical devices. Material t... Read More about Immune Modulation by Design: Using Topography to Control Human Monocyte Attachment and Macrophage Differentiation.

A Simple Polymicrobial Biofilm Keratinocyte Colonization Model for Exploring Interactions Between Commensals, Pathogens and Antimicrobials (2020)
Journal Article
Jordana-Lluch, E., Garcia, V., Kingdon, A. D. H., Singh, N., Alexander, C., Williams, P., & Hardie, K. R. (2020). A Simple Polymicrobial Biofilm Keratinocyte Colonization Model for Exploring Interactions Between Commensals, Pathogens and Antimicrobials. Frontiers in Microbiology, 11, Article 291. https://doi.org/10.3389/fmicb.2020.00291

© 2020 Jordana-Lluch, Garcia, Kingdon, Singh, Alexander, Williams and Hardie. Skin offers protection against external insults, with the skin microbiota playing a crucial defensive role against pathogens that gain access when the skin barrier is breac... Read More about A Simple Polymicrobial Biofilm Keratinocyte Colonization Model for Exploring Interactions Between Commensals, Pathogens and Antimicrobials.

Real time monitoring of biofilm formation on coated medical devices for the reduction and interception of bacterial infections (2020)
Journal Article
Kurmoo, Y., Hook, A. L., Harvey, D., Dubern, J., Williams, P., Morgan, S. P., …Alexander, M. R. (2020). Real time monitoring of biofilm formation on coated medical devices for the reduction and interception of bacterial infections. Biomaterials Science, 8(5), 1464-1477. https://doi.org/10.1039/c9bm00875f

Real time monitoring of bacterial attachment to medical devices provides opportunities to detect early biofilm formation and instigate appropriate interventions before infection develops. This study utilises long period grating (LPG) optical fibre se... Read More about Real time monitoring of biofilm formation on coated medical devices for the reduction and interception of bacterial infections.

Microfluidic-based Growth and Imaging of Bacterial Biofilms (2019)
Journal Article
Brown, J., Blunk, B., Williams, P., & Hardie, K. (2019). Microfluidic-based Growth and Imaging of Bacterial Biofilms. Bio-protocol, 9(24), https://doi.org/10.21769/BioProtoc.3460

Biofilms are a ubiquitous form of growth for bacteria on surfaces in most environments, natural or manmade. Here we present a protocol using the Bioflux microfluidic system to investigate the organized structure and development of these multicellular... Read More about Microfluidic-based Growth and Imaging of Bacterial Biofilms.

Clinical significance of Pseudomonas aeruginosa 2-alkyl-4-quinolone quorum-sensing signal molecules for long-term outcomes in adults with cystic fibrosis (2019)
Journal Article
Webb, K., Fogarty, A., Barrett, D. A., Nash, E. F., Whitehouse, J. L., Smyth, A. R., …Cámara, M. (2019). Clinical significance of Pseudomonas aeruginosa 2-alkyl-4-quinolone quorum-sensing signal molecules for long-term outcomes in adults with cystic fibrosis. Journal of Medical Microbiology, 68(12), 1823-1828. https://doi.org/10.1099/jmm.0.001099

Introduction : Pseudomonas aeruginosa is an important respiratory pathogen in cystic fibrosis (CF), which is associated with an accelerated decline in lung function, frequent pulmonary exacerbations and increased mortality. P. aeruginosa produces in... Read More about Clinical significance of Pseudomonas aeruginosa 2-alkyl-4-quinolone quorum-sensing signal molecules for long-term outcomes in adults with cystic fibrosis.

Validating a Predictive Structure-Property Relationship by Discovery of Novel Polymers which Reduce Bacterial Biofilm Formation (2019)
Journal Article
Dundas, A. A., Sanni, O., Dubern, J., Dimitrakis, G., Hook, A. L., Irvine, D. J., …Alexander, M. R. (2019). Validating a Predictive Structure-Property Relationship by Discovery of Novel Polymers which Reduce Bacterial Biofilm Formation. Advanced Materials, 31(49), Article 1903513. https://doi.org/10.1002/adma.201903513

ynthetic materials are an everyday component of modern healthcare yet often fail routinely as a consequence of medical‐device‐centered infections. The incidence rate for catheter‐associated urinary tract infections is between 3% and 7% for each day o... Read More about Validating a Predictive Structure-Property Relationship by Discovery of Novel Polymers which Reduce Bacterial Biofilm Formation.

Simultaneous Tracking of Pseudomonas aeruginosa motility in liquid and at the Solid-Liquid Interface Reveals Differential Roles for the Flagellar Stators (2019)
Journal Article
Hook, A. L., Flewellen, J. L., Dubern, J., Carabelli, A., Zald, I. M., Berry, R. M., …Alexander, M. R. (2019). Simultaneous Tracking of Pseudomonas aeruginosa motility in liquid and at the Solid-Liquid Interface Reveals Differential Roles for the Flagellar Stators. mSystems, 4(5), Article e00390-19. https://doi.org/10.1128/mSystems.00390-19

Bacteria sense chemicals, surfaces, and other cells and move toward some and away from others. Studying how single bacterial cells in a population move requires sophisticated tracking and imaging techniques. We have established quantitative methodolo... Read More about Simultaneous Tracking of Pseudomonas aeruginosa motility in liquid and at the Solid-Liquid Interface Reveals Differential Roles for the Flagellar Stators.

Timing is everything – impact of naturally occurring Staphylococcus aureus AgrC cytoplasmic domain adaptive mutations on auto-induction (2019)
Journal Article
Sloan, T. J., Murray, E., Yokoyama, M., Massey, R. C., Chan, W. C., Bonev, B., & Williams, P. (2019). Timing is everything – impact of naturally occurring Staphylococcus aureus AgrC cytoplasmic domain adaptive mutations on auto-induction. Journal of Bacteriology, 201(20), Article e00409-19. https://doi.org/10.1128/jb.00409-19

Mutations in the polymorphic Staphylococcus aureus agr locus responsible for quorum sensing (QS) dependent virulence gene regulation occur frequently during host adaptation. In two genomically closely related S. aureus clinical isolates exhibiting ma... Read More about Timing is everything – impact of naturally occurring Staphylococcus aureus AgrC cytoplasmic domain adaptive mutations on auto-induction.

Dual Bioresponsive Antibiotic and Quorum Sensing Inhibitor Combination Nanoparticles for Treatment of Pseudomonas aeruginosa Biofilms In Vitro and Ex Vivo (2019)
Journal Article
Singh, N., Romero, M., Travanut, A., Monteiro, P., Jordana-Lluch, E., Hardie, K. R., …Alexander, C. (2019). Dual Bioresponsive Antibiotic and Quorum Sensing Inhibitor Combination Nanoparticles for Treatment of Pseudomonas aeruginosa Biofilms In Vitro and Ex Vivo. Biomaterials Science, 10(7), 4099-4111. https://doi.org/10.1039/C9BM00773C

Many debilitating infections result from persistent microbial biofilms that do not respond to conventional antibiotic regimens. A potential method to treat such chronic infections is to combine agents which interfere with bacterial biofilm developmen... Read More about Dual Bioresponsive Antibiotic and Quorum Sensing Inhibitor Combination Nanoparticles for Treatment of Pseudomonas aeruginosa Biofilms In Vitro and Ex Vivo.

Contribution of the alkylquinolone quorum sensing system to the interaction of Pseudomonas aeruginosa with bronchial epithelial cells. (2018)
Journal Article
Liu, Y., Hussain, F., Negm, O., Pavia, A., Halliday, N., Frédéric Dubern, J., …Martínez-Pomares, L. (2018). Contribution of the alkylquinolone quorum sensing system to the interaction of Pseudomonas aeruginosa with bronchial epithelial cells. Frontiers in Microbiology, 9, Article 3018. https://doi.org/10.3389/fmicb.2018.03018

Pseudomonas aeruginosa causes infections in patients with compromised epithelial 32 barrier function. Multiple virulence factors produced by P. aeruginosa are controlled 33 by quorum sensing (QS) via 2-alkyl-4(1H)-quinolone (AQ) signal molecules. Her... Read More about Contribution of the alkylquinolone quorum sensing system to the interaction of Pseudomonas aeruginosa with bronchial epithelial cells..

Molecular recognition of lipopolysaccaride by the lantibiotic nisin (2018)
Journal Article
Lanne, A. B., Goode, A., Prattley, C., Kumari, D., Drasbek, M. R., Williams, P., …Bonev, B. B. (2019). Molecular recognition of lipopolysaccaride by the lantibiotic nisin. BBA - Biomembranes, 1861(1), 83-92. https://doi.org/10.1016/j.bbamem.2018.10.006

Nisin is a lanthionine antimicrobial effective against diverse Gram-positive bacteria and is used as a food preservative worldwide. Its action is mediated by pyrophosphate recognition of the bacterial cell wall receptors lipid II and undecaprenyl pyr... Read More about Molecular recognition of lipopolysaccaride by the lantibiotic nisin.

Model-based drug development in pulmonary delivery: pharmacokinetic analysis of novel drug candidates for treatment of Pseudomonas aeruginosa lung infection (2018)
Journal Article
Sou, T., Kukavica-Ibrulj, I., Soukarieh, F., Halliday, N., Levesque, R. C., Williams, P., …Bergström, C. A. (2019). Model-based drug development in pulmonary delivery: pharmacokinetic analysis of novel drug candidates for treatment of Pseudomonas aeruginosa lung infection. Journal of Pharmaceutical Sciences, 108(1), 630-640. https://doi.org/10.1016/j.xphs.2018.09.017

Antibiotic resistance is a major public health threat worldwide. In particular, about 80% of cystic fibrosis patients have chronic Pseudomonas aeruginosa (PA) lung infection resistant to many current antibiotics. We are therefore developing a novel c... Read More about Model-based drug development in pulmonary delivery: pharmacokinetic analysis of novel drug candidates for treatment of Pseudomonas aeruginosa lung infection.

Identification of FDA-Approved Drugs as Antivirulence Agents Targeting the pqs Quorum-Sensing System of Pseudomonas aeruginosa (2018)
Journal Article
D'Angelo, F., Baldelli, V., Halliday, N., Pantalone, P., Polticelli, F., Fiscarelli, E., …Rampioni, G. (2018). Identification of FDA-Approved Drugs as Antivirulence Agents Targeting the pqs Quorum-Sensing System of Pseudomonas aeruginosa. Antimicrobial Agents and Chemotherapy, 62(11), Article e01296-18. https://doi.org/10.1128/AAC.01296-18

Copyright © 2018 American Society for Microbiology. All Rights Reserved. The long-term use of antibiotics has led to the emergence of multidrug-resistant bacteria. A promising strategy to combat bacterial infections aims at hampering their adaptabili... Read More about Identification of FDA-Approved Drugs as Antivirulence Agents Targeting the pqs Quorum-Sensing System of Pseudomonas aeruginosa.

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.

Pseudomonas aeruginosa quorum sensing systems as drug discovery targets: current position and future perspectives (2018)
Journal Article
Soukarieh, F., Williams, P., Stocks, M. J., & Camara, M. (in press). Pseudomonas aeruginosa quorum sensing systems as drug discovery targets: current position and future perspectives. Journal of Medicinal Chemistry, https://doi.org/10.1021/acs.jmedchem.8b00540

Antimicrobial resistance (AMR) is a serious threat to public health globally, manifested by the frequent emergence of multi-drug resistant pathogens that render current chemotherapy inadequate. Health organizations worldwide have recognized the sever... Read More about Pseudomonas aeruginosa quorum sensing systems as drug discovery targets: current position and future perspectives.

The quorum sensing system of Yersinia enterocolitica 8081 regulates swimming motility, host cell attachment, and virulence plasmid maintenance (2018)
Journal Article
Ng, Y., Grasso, M., Wright, V., Garcia, V., Williams, P., & Atkinson, S. (2018). The quorum sensing system of Yersinia enterocolitica 8081 regulates swimming motility, host cell attachment, and virulence plasmid maintenance. Genes, 9(6), Article 307. https://doi.org/10.3390/genes9060307

Although Yersinia enterocolitica genomes are highly heterogeneous, they contain a conserved N-acylhomoserine lactone-dependent (AHL) quorum sensing (QS) system consisting of the luxR and luxI orthologs yenR and yenI respectively. Certain hypervirulen... Read More about The quorum sensing system of Yersinia enterocolitica 8081 regulates swimming motility, host cell attachment, and virulence plasmid maintenance.

Effect of surfactant on Pseudomonas aeruginosa colonization of polymer microparticles and flat films (2018)
Journal Article
Hüsler, A., Haas, S., Parry, L., Romero, M., Nisisako, T., Williams, P., …Alexander, M. R. (2018). Effect of surfactant on Pseudomonas aeruginosa colonization of polymer microparticles and flat films. RSC Advances, 8(28), https://doi.org/10.1039/c8ra01491d

Micro- and nanoparticles are of great interest because of their potential for trafficking into the body for applications such as low-fouling coatings on medical devices, drug delivery in pharmaceutics and cell carriers in regenerative medicine strate... Read More about Effect of surfactant on Pseudomonas aeruginosa colonization of polymer microparticles and flat films.

To boil an egg: substrate binding affects critical stability in thermal unfolding of proteins (2018)
Journal Article
Hussain, R., Hughes, C. S., Jávorfi, T., Siligardi, G., Williams, P., & Bonev, B. B. (2018). To boil an egg: substrate binding affects critical stability in thermal unfolding of proteins. Journal of Physical Chemistry B, 122(8), 2213-2218. https://doi.org/10.1021/acs.jpcb.7b10643

Thermal unfolding of proteins is used extensively in screening of drug candidates because molecular interactions with ligands and substrates affect strongly protein stability, transition temperature, and cooperativity. We use synchrotron radiation ci... Read More about To boil an egg: substrate binding affects critical stability in thermal unfolding of proteins.

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., 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.

Prediction of Broad-Spectrum Pathogen Attachment to Coating Materials for Biomedical Devices (2018)
Journal Article
Dundas, A. A., Mikulskis, P., Hook, A., Dundas, A., Irvine, D., Sanni, O., …Winkler, D. A. (2018). Prediction of Broad-Spectrum Pathogen Attachment to Coating Materials for Biomedical Devices. ACS Applied Materials and Interfaces, 10(1), 139-149. https://doi.org/10.1021/acsami.7b14197

© 2017 American Chemical Society. Bacterial infections in healthcare settings are a frequent accompaniment to both routine procedures such as catheterization and surgical site interventions. Their impact is becoming even more marked as the numbers of... Read More about Prediction of Broad-Spectrum Pathogen Attachment to Coating Materials for Biomedical Devices.