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G1 Cell Cycle Arrest Is Induced by the Fourth Extracellular Loop of Meningococcal PorA in Epithelial and Endothelial Cells (2023)
Journal Article
Vassey, M., Firdaus, R., Aslam, A., Wheldon, L. M., Oldfield, N. J., Ala’Aldeen, D. A., & Wooldridge, K. G. (2023). G1 Cell Cycle Arrest Is Induced by the Fourth Extracellular Loop of Meningococcal PorA in Epithelial and Endothelial Cells. Cellular Microbiology, 2023, 1-15. https://doi.org/10.1155/2023/7480033

Neisseria meningitidis is the most frequent cause of bacterial meningitis and is one of the few bacterial pathogens that can breach the blood-brain barrier (BBB). The 37/67 kDa laminin receptor (LamR) was previously identified as a receptor mediating... Read More about G1 Cell Cycle Arrest Is Induced by the Fourth Extracellular Loop of Meningococcal PorA in Epithelial and Endothelial Cells.

Ferric quinate (QPLEX) inhibits the interaction of major outer membrane protein (MOMP) with the Lewis b (Leb) antigen and limits Campylobacter colonization in broilers (2023)
Journal Article
Okoye, J. C., Holland, A., Pitoulias, M., Paschalis, V., Piddubnyi, A., Dufailu, O. A., Borén, T., Oldfield, N. J., Mahdavi, J., & Soultanas, P. (2023). Ferric quinate (QPLEX) inhibits the interaction of major outer membrane protein (MOMP) with the Lewis b (Leb) antigen and limits Campylobacter colonization in broilers. Frontiers in Microbiology, 14, Article 1146418. https://doi.org/10.3389/fmicb.2023.1146418

Campylobacter jejuni colonizes hosts by interacting with Blood Group Antigens (BgAgs) on the surface of gastrointestinal epithelia. Genetic variations in BgAg expression affects host susceptibility to C. jejuni. Here, we show that the essential major... Read More about Ferric quinate (QPLEX) inhibits the interaction of major outer membrane protein (MOMP) with the Lewis b (Leb) antigen and limits Campylobacter colonization in broilers.

Ferric Quinate (QPLEX) inhibits the interaction of Major Outer Membrane Protein (MOMP) with the Lewis b (Leb) antigen and Limits Campylobacter colonisation in broilers (2023)
Journal Article
Okoye, J. C., Holland, A., Pitoulias, M., Paschalis, V., Piddubnyi, A., Dufailu, O. A., Boren, T., Oldfield, N. J., Mahdari, J., & Soultanos, P. (2023). Ferric Quinate (QPLEX) inhibits the interaction of Major Outer Membrane Protein (MOMP) with the Lewis b (Leb) antigen and Limits Campylobacter colonisation in broilers. Frontiers in Microbiology, 14, Article 1146418. https://doi.org/10.3389/fmicb.2023.1146418

Campylobacter jejuni colonizes hosts by interacting with Blood Group Antigens (BgAgs) on the surface of gastrointestinal epithelia. Genetic variations in BgAg expression affects host susceptibility to C. jejuni. Here, we show that the essential major... Read More about Ferric Quinate (QPLEX) inhibits the interaction of Major Outer Membrane Protein (MOMP) with the Lewis b (Leb) antigen and Limits Campylobacter colonisation in broilers.

Variable disruption of epithelial monolayers by Neisseria meningitidis carriage isolates of the hypervirulent MenW cc11 and MenY cc23 lineages (2023)
Journal Article
Dave, N., Albiheyri, R. S., Wanford, J. J., Green, L. R., Oldfield, N. J., Turner, D. P., Martinez-Pomares, L., & Bayliss, C. D. (2023). Variable disruption of epithelial monolayers by Neisseria meningitidis carriage isolates of the hypervirulent MenW cc11 and MenY cc23 lineages. Microbiology, 169(2), https://doi.org/10.1099/mic.0.001305

Colonization of mucosal tissues by Neisseria meningitidis requires adhesion mediated by the type IV pilus and multiple outer-membrane proteins. Penetration of the mucosa and invasion of epithelial cells are thought to contribute to host persistence a... Read More about Variable disruption of epithelial monolayers by Neisseria meningitidis carriage isolates of the hypervirulent MenW cc11 and MenY cc23 lineages.

Ferric quinate (QPLEX) interacts with the major outer membrane protein (MOMP) of Campylobacter jejuni and enters through the porin channel into the periplasmic space (2022)
Journal Article
Okoye, J. C., Bellamy-Carter, J., Oldham, N. J., Oldfield, N. J., Mahdavi, J., & Soultanas, P. (2022). Ferric quinate (QPLEX) interacts with the major outer membrane protein (MOMP) of Campylobacter jejuni and enters through the porin channel into the periplasmic space. Computational and Structural Biotechnology Journal, 20, 5355-5363. https://doi.org/10.1016/j.csbj.2022.09.032

Ferric chelates like ferric tyrosinate (TYPLEX) and the closely related ferric quinate (QPLEX) are structural mimics of bacterial siderophores. TYPLEX has been trialled as a feed additive in farming of commercial broilers, reducing Campylobacter load... Read More about Ferric quinate (QPLEX) interacts with the major outer membrane protein (MOMP) of Campylobacter jejuni and enters through the porin channel into the periplasmic space.

Impact of meningococcal ACWY conjugate vaccines on pharyngeal carriage in adolescents: evidence for herd protection from the UK MenACWY programme (2022)
Journal Article
Carr, J. P., MacLennan, J. M., Plested, E., Bratcher, H. B., Harrison, O. B., Aley, P. K., Bray, J. E., Camara, S., Rodrigues, C. M., Davis, K., Bartolf, A., Baxter, D., Cameron, J. C., Cunningham, R., Faust, S. N., Fidler, K., Gowda, R., Heath, P. T., Hughes, S., Khajuria, S., …Duale, K. (2022). Impact of meningococcal ACWY conjugate vaccines on pharyngeal carriage in adolescents: evidence for herd protection from the UK MenACWY programme. Clinical Microbiology and Infection, 28(12), 1649.e1-1649.e8. https://doi.org/10.1016/j.cmi.2022.07.004

Objective: Serogroup W and Y invasive meningococcal disease increased globally from 2000 onwards. Responding to a rapid increase in serogroup W clonal complex 11 (W:cc11) invasive meningococcal disease, the UK replaced an adolescent booster dose of m... Read More about Impact of meningococcal ACWY conjugate vaccines on pharyngeal carriage in adolescents: evidence for herd protection from the UK MenACWY programme.

Effect of priming interval on reactogenicity, peak immunological response, and waning after homologous and heterologous COVID-19 vaccine schedules: exploratory analyses of Com-COV, a randomised control trial (2022)
Journal Article
Shaw, R. H., Liu, X., Stuart, A. S. V., Greenland, M., Aley, P. K., Andrews, N. J., Cameron, J. C., Charlton, S., Clutterbuck, E. A., Collins, A. M., Dejnirattisai, W., Dinesh, T., Faust, S. N., Ferreira, D. M., Finn, A., Green, C. A., Hallis, B., Heath, P. T., Hill, H., Lambe, T., …Okenyi, E. (2022). Effect of priming interval on reactogenicity, peak immunological response, and waning after homologous and heterologous COVID-19 vaccine schedules: exploratory analyses of Com-COV, a randomised control trial. Lancet Respiratory Medicine, 10(11), 1049-1060. https://doi.org/10.1016/S2213-2600%2822%2900163-1

Background: Priming COVID-19 vaccine schedules have been deployed at variable intervals globally, which might influence immune persistence and the relative importance of third-dose booster programmes. Here, we report exploratory analyses from the Com... Read More about Effect of priming interval on reactogenicity, peak immunological response, and waning after homologous and heterologous COVID-19 vaccine schedules: exploratory analyses of Com-COV, a randomised control trial.

Safety and immunogenicity of heterologous versus homologous prime-boost schedules with an adenoviral vectored and mRNA COVID-19 vaccine (Com-COV): a single-blind, randomised, non-inferiority trial (2021)
Journal Article
Liu, X., Shaw, R. H., Stuart, A. S. V., Greenland, M., Aley, P. K., Andrews, N. J., Cameron, J. C., Charlton, S., Clutterbuck, E. A., Collins, A. M., Dinesh, T., England, A., Faust, S. N., Ferreira, D. M., Finn, A., Green, C. A., Hallis, B., Heath, P. T., Hill, H., Lambe, T., …Allen, L. (2021). Safety and immunogenicity of heterologous versus homologous prime-boost schedules with an adenoviral vectored and mRNA COVID-19 vaccine (Com-COV): a single-blind, randomised, non-inferiority trial. Lancet, 398(10303), 856-869. https://doi.org/10.1016/S0140-6736%2821%2901694-9

Background: Use of heterologous prime-boost COVID-19 vaccine schedules could facilitate mass COVID-19 immunisation. However, we have previously reported that heterologous schedules incorporating an adenoviral vectored vaccine (ChAdOx1 nCoV-19, AstraZ... Read More about Safety and immunogenicity of heterologous versus homologous prime-boost schedules with an adenoviral vectored and mRNA COVID-19 vaccine (Com-COV): a single-blind, randomised, non-inferiority trial.

Rapid Transmission of a Hyper-Virulent Meningococcal Clone Due to High Effective Contact Numbers and Super Spreaders (2020)
Journal Article
Holmes, J. C., Green, L. R., Oldfield, N. J., Turner, D. P., & Bayliss, C. D. (2020). Rapid Transmission of a Hyper-Virulent Meningococcal Clone Due to High Effective Contact Numbers and Super Spreaders. Frontiers in Genetics, 11, Article 579411. https://doi.org/10.3389/fgene.2020.579411

© Copyright © 2020 Holmes, Green, Oldfield, Turner and Bayliss. Rapid transmission, a critical contributory factor in outbreaks of invasive meningococcal disease, requires naïve populations of sufficient size and intermingling. We examined genomic va... Read More about Rapid Transmission of a Hyper-Virulent Meningococcal Clone Due to High Effective Contact Numbers and Super Spreaders.

A role for fibroblast growth factor receptor 1 in the pathogenesis of Neisseria meningitidis (2020)
Journal Article
Azimi, S., Wheldon, L. M., Oldfield, N. J., Ala'Aldeen, D. A., & Wooldridge, K. G. (2020). A role for fibroblast growth factor receptor 1 in the pathogenesis of Neisseria meningitidis. Microbial Pathogenesis, 149, Article 104534. https://doi.org/10.1016/j.micpath.2020.104534

Neisseria meningitidis (the meningococcus) remains an important cause of human disease, including meningitis and sepsis. Adaptation to the host environment includes many interactions with specific cell surface receptors, resulting in intracellular si... Read More about A role for fibroblast growth factor receptor 1 in the pathogenesis of Neisseria meningitidis.

Localized hypermutation is the major driver of meningococcal genetic variability during persistent asymptomatic carriage (2020)
Journal Article
Green, L. R., Al-Rubaiawi, A. A., Al-Maeni, M. A., Harrison, O. B., Blades, M., Oldfield, N. J., Turner, D. P., Maiden, M. C., & Bayliss, C. D. (2020). Localized hypermutation is the major driver of meningococcal genetic variability during persistent asymptomatic carriage. mBio, 11(2), Article e03068-19. https://doi.org/10.1128/mBio.03068-19

© 2020 Green et al. Host persistence of bacteria is facilitated by mutational and recombina-torial processes that counteract loss of genetic variation during transmission and selection from evolving host responses. Genetic variation was investigated... Read More about Localized hypermutation is the major driver of meningococcal genetic variability during persistent asymptomatic carriage.

Localized Hypermutation is the Major Driver of Meningococcal Genetic Variability during Persistent Asymptomatic Carriage (2020)
Journal Article
Bayliss, C. D., Green, L. R., Al-Rubaiawi, A. A., Oldfield, N. J., Turner, D. P. J., Al-Maeni, M. A. R. M., Harrison, O. B., Blades, M., & Maiden, M. C. J. (2020). Localized Hypermutation is the Major Driver of Meningococcal Genetic Variability during Persistent Asymptomatic Carriage. mBio, 11(2), Article e03068-19. https://doi.org/10.1128/mBio.03068-19

Host persistence of bacteria is facilitated by mutational and recombina-torial processes that counteract loss of genetic variation during transmission and selection from evolving host responses. Genetic variation was investigated during persistent as... Read More about Localized Hypermutation is the Major Driver of Meningococcal Genetic Variability during Persistent Asymptomatic Carriage.

Variant Signal Peptides of Vaccine Antigen, FHbp, Impair Processing Affecting Surface Localization and Antibody-Mediated Killing in Most Meningococcal Isolates (2019)
Journal Article
da Silva, R. A., Karlyshev, A. V., Oldfield, N. J., Wooldridge, K. G., Bayliss, C. D., Ryan, A., & Griffin, R. (2019). Variant Signal Peptides of Vaccine Antigen, FHbp, Impair Processing Affecting Surface Localization and Antibody-Mediated Killing in Most Meningococcal Isolates. Frontiers in Microbiology, 10, Article 2847. https://doi.org/10.3389/fmicb.2019.02847

© Copyright © 2019 da Silva, Karlyshev, Oldfield, Wooldridge, Bayliss, Ryan and Griffin. Meningococcal lipoprotein, Factor H binding protein (FHbp), is the sole antigen of the Trumenba vaccine (Pfizer) and one of four antigens of the Bexsero vaccine... Read More about Variant Signal Peptides of Vaccine Antigen, FHbp, Impair Processing Affecting Surface Localization and Antibody-Mediated Killing in Most Meningococcal Isolates.

The moonlighting peroxiredoxin-glutaredoxin in Neisseria meningitidis binds plasminogen via a C-terminal lysine residue and contributes to survival in a whole blood model (2019)
Journal Article
Aljannat, M. A., Oldfield, N. J., Albasri, H. M., Dorrington, L. K., Ohri, R. L., Wooldridge, K. G., & Turner, D. P. (2020). The moonlighting peroxiredoxin-glutaredoxin in Neisseria meningitidis binds plasminogen via a C-terminal lysine residue and contributes to survival in a whole blood model. Microbial Pathogenesis, 139, Article 103890. https://doi.org/10.1016/j.micpath.2019.103890

© 2019 Elsevier Ltd Neisseria meningitidis is a human-restricted bacterium that can invade the bloodstream and cross the blood-brain barrier resulting in life-threatening sepsis and meningitis. Meningococci express a cytoplasmic peroxiredoxin-glutare... Read More about The moonlighting peroxiredoxin-glutaredoxin in Neisseria meningitidis binds plasminogen via a C-terminal lysine residue and contributes to survival in a whole blood model.

Potentiation of phase variation in multiple outer membrane proteins during spread of the hyperinvasive Neisseria meningitidis serogroup W ST-11 lineage (2019)
Journal Article
Green, L. R., Dave, N., Adewoye, A. B., Lucidarme, J., Clark, S. A., Oldfield, N. J., Turner, D. P., Borrow, R., & Bayliss, C. D. (2019). Potentiation of phase variation in multiple outer membrane proteins during spread of the hyperinvasive Neisseria meningitidis serogroup W ST-11 lineage. Journal of Infectious Diseases, 220(7), 1109–1117. https://doi.org/10.1093/infdis/jiz275

BACKGROUND:
Since 2009, increases in invasive meningococcal disease have occurred in the United Kingdom due to a sub-lineage of the Neisseria meningitidis serogroup W ST-11 clonal complex (the 'original-UK' strain). In 2013, a descendent sub-strain... Read More about Potentiation of phase variation in multiple outer membrane proteins during spread of the hyperinvasive Neisseria meningitidis serogroup W ST-11 lineage.

Serogroup-specific meningococcal carriage by age group: a systematic review and meta-analysis (2019)
Journal Article
Peterson, M. E., Li, Y., Shanks, H., Mile, R., Nair, H., Kyaw, M. H., & Meningococcal Carriage Group. (2019). Serogroup-specific meningococcal carriage by age group: a systematic review and meta-analysis. BMJ Open, 9(4), Article e024343. https://doi.org/10.1136/bmjopen-2018-024343

Objective Neisseria meningitidis carriage prevalence has known variation across the lifespan, but it is unclear whether carriage varies among meningococcal capsular groups. Therefore, we aimed to characterise group-specific meningococcal carriage by... Read More about Serogroup-specific meningococcal carriage by age group: a systematic review and meta-analysis.

Limited impact of adolescent meningococcal ACWY vaccination on Neisseria meningitides serogroup W carriage in university students (2017)
Journal Article
Oldfield, N. J., Green, L. R., Parkhill, J., Bayliss, C. D., & Turner, D. P. (2018). Limited impact of adolescent meningococcal ACWY vaccination on Neisseria meningitides serogroup W carriage in university students. Journal of Infectious Diseases, 217(4), 608-616. https://doi.org/10.1093/infdis/jix596

Background

In the UK rising disease levels due to Neisseria meningitidis serogroup W clonal complex ST-11 (MenW:cc11) strains led to introduction of conjugate MenACWY vaccination for teenagers. We investigated the impact of immunization on carriag... Read More about Limited impact of adolescent meningococcal ACWY vaccination on Neisseria meningitides serogroup W carriage in university students.

Rise in Group W Meningococcal Carriage in University Students, United Kingdom (2017)
Journal Article
Oldfield, N. J., Cayrou, C., AlJannat, M. A., Al-Rubaiawi, A. A., Green, L. R., Dada, S., Steels, O. D., Stirrup, C., Wanford, J., Atwah, B. A., Bayliss, C. D., & Turner, D. P. (2017). Rise in Group W Meningococcal Carriage in University Students, United Kingdom. Emerging Infectious Disease, 23(6), 1009-1011. https://doi.org/10.3201/eid2306.161768

MenACWY conjugate vaccination was recently introduced in the UK for adolescents and 24 young adults to reduce disease due to Neisseria meningitidis group W (MenW). We 25 conducted a cross-sectional carriage study in first year university students. De... Read More about Rise in Group W Meningococcal Carriage in University Students, United Kingdom.