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Mutations in the binding site of TNFR1 PLAD reduce homologous interactions but can enhance antagonism of wild‐type TNFR1 activity (2021)
Journal Article
Albogami, S., Todd, I., Negm, O., Fairclough, L. C., & Tighe, P. J. (2021). Mutations in the binding site of TNFR1 PLAD reduce homologous interactions but can enhance antagonism of wild‐type TNFR1 activity. Immunology, 164(3), 637-654. https://doi.org/10.1111/imm.13400

The tumour necrosis factor receptor superfamily (TNFRSF) members contain cysteine-rich domains (CRD) in their extracellular regions, and the membrane-distal CRD1 forms homologous interactions in the absence of ligand. The CRD1 is therefore termed a p... Read More about Mutations in the binding site of TNFR1 PLAD reduce homologous interactions but can enhance antagonism of wild‐type TNFR1 activity.

Patients with TNF Receptor Associated Periodic Syndrome (TRAPS) are hypersensitive to Toll‐like receptor 9 stimulation (2019)
Journal Article
Negm, O. H., Singh, S., Abduljabbar, W., Hamed, M. R., Radford, P., McDermott, E. M., …Tighe, P. J. (2019). Patients with TNF Receptor Associated Periodic Syndrome (TRAPS) are hypersensitive to Toll‐like receptor 9 stimulation. Clinical and Experimental Immunology, 197(3), 352-360. https://doi.org/10.1111/cei.13306

Tumour necrosis factor receptor‐associated periodic syndrome (TRAPS) is an hereditary autoinflammatory disorder characterised by recurrent episodes of fever and inflammation. It is associated with autosomal dominant mutations in TNFRSF1A, which encod... Read More about Patients with TNF Receptor Associated Periodic Syndrome (TRAPS) are hypersensitive to Toll‐like receptor 9 stimulation.

Contribution of the alkylquinolone quorum sensing system to the interaction of Pseudomonas aeruginosa with bronchial epithelial cells. (2018)
Journal Article
Liu, Y.-C., 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..

A protein microarray assay for serological determination of antigen-specific antibody responses following Clostridium difficile infection (2018)
Journal Article
Negm, O. H., Hamed, M. R., & Monaghan, T. M. (2018). A protein microarray assay for serological determination of antigen-specific antibody responses following Clostridium difficile infection. Journal of Visualized Experiments, 2018(136), Article e57399. https://doi.org/10.3791/57399

We provide a detailed overview of a novel high-throughput protein microarray assay for the determination of anti-C. difficile antibody levels in human sera and in separate preparations of polyclonal IVIg. The protocol describes the methodological ste... Read More about A protein microarray assay for serological determination of antigen-specific antibody responses following Clostridium difficile infection.

Characterization of behavioral, signaling and cytokine alterations in a rat neurodevelopmental model for schizophrenia, and their reversal by the 5-HT6 receptor antagonist SB-399885 (2018)
Journal Article

Post-weaning social isolation of rats produces neuroanatomical, neurochemical and behavioral alterations resembling some core features of schizophrenia. This study examined the ability of the 5-HT? receptor antagonist SB-399885 to reverse isolation-i... Read More about Characterization of behavioral, signaling and cytokine alterations in a rat neurodevelopmental model for schizophrenia, and their reversal by the 5-HT6 receptor antagonist SB-399885.

Autoantibodies of IgM and IgG classes show differences in recognition of multiple autoantigens in chronic obstructive pulmonary disease (2017)
Journal Article
Shindi, R., Al-Mehairi, A., Negm, O. H., Kalsheker, N., Gale, N., Shale, D. J., …Fairclough, L. C. (2017). Autoantibodies of IgM and IgG classes show differences in recognition of multiple autoantigens in chronic obstructive pulmonary disease. Clinical Immunology, 183, https://doi.org/10.1016/j.clim.2017.09.020

Autoimmunity occurs in chronic obstructive pulmonary disease (COPD). We describe an antigen microarray for detecting serum autoantibodies (AAbs) to determine how IgM, as well as IgG, AAbs distinguish patients with COPD from controls with a history of... Read More about Autoantibodies of IgM and IgG classes show differences in recognition of multiple autoantigens in chronic obstructive pulmonary disease.

High prevalence of subclass-specific binding and neutralizing antibodies against Clostridium difficile toxins in adult cystic fibrosis sera: possible mode of immunoprotection against symptomatic C. difficile infection (2017)
Journal Article
Monaghan, T. M., Negm, O. H., MacKenzie, B., Hamed, M. R., Shone, C. C., Humphreys, D., …Wilcox, M. H. (2017). High prevalence of subclass-specific binding and neutralizing antibodies against Clostridium difficile toxins in adult cystic fibrosis sera: possible mode of immunoprotection against symptomatic C. difficile infection. Clinical and Experimental Gastroenterology, 10, https://doi.org/10.2147/CEG.S133939

Objectives: Despite multiple risk factors and a high rate of colonization for Clostridium difficile, the occurrence of C. difficile infection in patients with cystic fibrosis is rare. The aim of this study was to compare the prevalence of binding C.... Read More about High prevalence of subclass-specific binding and neutralizing antibodies against Clostridium difficile toxins in adult cystic fibrosis sera: possible mode of immunoprotection against symptomatic C. difficile infection.

Protective antibodies against Clostridium difficile are present in intravenous immunoglobulin and are retained in humans following its administration (2017)
Journal Article
Negm, O. H., MacKenzie, B., Hamed, M., Ahmad, O., Shone, C. C., Humphreys, D., …Monaghan, T. M. (2017). Protective antibodies against Clostridium difficile are present in intravenous immunoglobulin and are retained in humans following its administration. Clinical and Experimental Immunology, 188(3), 437-443. https://doi.org/10.1111/cei.12946

The prevalence of serum antibodies against Clostridium difficile (CD) toxins A and B in healthy populations have prompted interest in evaluating the therapeutic activity of intravenous immunoglobulin (IVIg) in individuals experiencing severe or recur... Read More about Protective antibodies against Clostridium difficile are present in intravenous immunoglobulin and are retained in humans following its administration.

Peripheral killer cells do not differentiate between asthma patients with or without fixed airway obstruction (2016)
Journal Article
Tubby, C., Negm, O. H., Harrison, T. W., Tighe, P. J., Todd, I., & Fairclough, L. C. (2017). Peripheral killer cells do not differentiate between asthma patients with or without fixed airway obstruction. Journal of Asthma, 54(5), 456-466. https://doi.org/10.1080/02770903.2016.1236941

Objective: The three main types of killer cells – CD8+ T cells, NK cells and NKT cells – have been linked to asthma and chronic obstructive pulmonary disease (COPD). However, their role in a small subset of asthma patients displaying fixed airway obs... Read More about Peripheral killer cells do not differentiate between asthma patients with or without fixed airway obstruction.

Clinicopathological and prognostic significance of mitogen-activated protein kinases (MAPK) in breast cancers (2016)
Journal Article
Ahmad, D. A. J., Negm, O. H., Layth Alabdullah, M., Mirza, S., Hamed, M. R., Band, V., …Rakha, E. (2016). Clinicopathological and prognostic significance of mitogen-activated protein kinases (MAPK) in breast cancers. Breast Cancer Research and Treatment, 159(3), 457-467. https://doi.org/10.1007/s10549-016-3967-9

Background Mitogen-activated protein kinases (MAPKs) are signalling transduction molecules that have different functions and diverse behaviour in cancer. In breast cancer, MAPK is related to oestrogen receptor (ER) and HER2. Methods Protein express... Read More about Clinicopathological and prognostic significance of mitogen-activated protein kinases (MAPK) in breast cancers.

Clinical and biological significance of RAD51 expression in breast cancer: a key DNA damage response protein (2016)
Journal Article
Alshareeda, A., Negm, O. H., Aleskandarany, M. A., Green, A. R., Nolan, C., Tighe, P. J., …Rakha, E. (2016). Clinical and biological significance of RAD51 expression in breast cancer: a key DNA damage response protein. Breast Cancer Research and Treatment, 159(1), 41-53. https://doi.org/10.1007/s10549-016-3915-8

Impaired DNA damage response (DDR) may play a fundamental role in the pathogenesis of breast cancer (BC). RAD51 is a key player in DNA double-strand break repair. In this study, we aimed to assess the biological and clinical significance of RAD51 exp... Read More about Clinical and biological significance of RAD51 expression in breast cancer: a key DNA damage response protein.

Human blood autoantibodies in the detection of colorectal cancer (2016)
Journal Article
Negm, O. H., Hamed, M. R., Schoen, R. E., Whelan, R. L., Steele, R. J., Scholefield, J., …Sewell, H. F. (2016). Human blood autoantibodies in the detection of colorectal cancer. PLoS ONE, 11(7), 1-14. https://doi.org/10.1371/journal.pone.0156971

Colorectal cancer (CRC) is the second most common malignancy in the western world. Early detection and diagnosis of all cancer types is vital to improved prognosis by enabling early treatment when tumours should be both resectable and curable. Sera f... Read More about Human blood autoantibodies in the detection of colorectal cancer.

The prognostic significance of STAT3 in invasive breast cancer: analysis of protein and mRNA expressions in large cohorts (2016)
Journal Article
Aleskandarany, M. A., Agarwal, D., Negm, O. H., Ball, G., Elmouna, A., Ashankyty, I., …Rakha, E. A. (2016). The prognostic significance of STAT3 in invasive breast cancer: analysis of protein and mRNA expressions in large cohorts. Breast Cancer Research and Treatment, 156(1), 9-20. https://doi.org/10.1007/s10549-016-3709-z

Signal transducer and activator of transcription (STAT) transcription factors family are involved in diverse cellular biological functions. Reports regarding the prognostic impact of STAT3 expression in breast cancer (BC) are variable whether being a... Read More about The prognostic significance of STAT3 in invasive breast cancer: analysis of protein and mRNA expressions in large cohorts.

Clinical utility of reverse phase protein array for molecular classification of breast cancer (2015)
Journal Article
Negm, O. H., Muftah, A. A., Aleskandarany, M. A., Hamed, M. R., Ahmad, D. A., Nolan, C. C., …Green, A. R. (2016). Clinical utility of reverse phase protein array for molecular classification of breast cancer. Breast Cancer Research and Treatment, 155(1), 25-35. https://doi.org/10.1007/s10549-015-3654-2

Reverse Phase Protein Array (RPPA) represents a sensitive and high-throughput technique allowing simultaneous quantitation of protein expression levels in biological samples. This study aimed to confirm the ability of RPPA to classify archival formal... Read More about Clinical utility of reverse phase protein array for molecular classification of breast cancer.

Tumor necrosis factor receptor I blockade shows that TNF-dependent and independent mechanisms synergise in TNF receptor associated periodic syndrome (2015)
Journal Article
Fairclough, L. C., Stoop, A., Negm, O. H., Radford, P., Tighe, P. J., & Todd, I. (2015). Tumor necrosis factor receptor I blockade shows that TNF-dependent and independent mechanisms synergise in TNF receptor associated periodic syndrome. European Journal of Immunology, 45(10), 2937-2944. https://doi.org/10.1002/eji.201545769

TNF receptor associated periodic syndrome (TRAPS) is an autoinflammatory disease involving recurrent episodes of fever and inflammation. It is associated with autosomal dominant mutations in TNF receptor superfamily 1A gene localised to exons encodin... Read More about Tumor necrosis factor receptor I blockade shows that TNF-dependent and independent mechanisms synergise in TNF receptor associated periodic syndrome.

Profiling Humoral Immune Responses to Clostridium difficile-Specific Antigens by Protein Microarray Analysis (2015)
Journal Article
Negm, O. H., Hamed, M. R., Dilnot, E. M., Shone, C. C., Marszalowska, I., Lynch, M., …Monaghan, T. M. (2015). Profiling Humoral Immune Responses to Clostridium difficile-Specific Antigens by Protein Microarray Analysis. Clinical and Vaccine Immunology, 22(9), 1033-1039. https://doi.org/10.1128/CVI.00190-15

Clostridium difficile is an anaerobic, Gram-positive, and spore-forming bacterium that is the leading worldwide infective cause of hospital-acquired and antibiotic-associated diarrhea. Several studies have reported associations between humoral immuni... Read More about Profiling Humoral Immune Responses to Clostridium difficile-Specific Antigens by Protein Microarray Analysis.

KPNA2 is a nuclear export protein that contributes to aberrant localisation of key proteins and poor prognosis of breast cancer (2015)
Journal Article

Background: It is recognised that modulations of the nuclear import of macromolecules have a role in changing cellular phenotypes and carcinogenesis. We and others have noticed that aberrant subcellular localisation of DNA damage response (DDR) prote... Read More about KPNA2 is a nuclear export protein that contributes to aberrant localisation of key proteins and poor prognosis of breast cancer.

Clinical and biological significance of glucocorticoid receptor (GR) expression in breast cancer (2015)
Journal Article
Abduljabbar, R., Negm, O. H., Lai, C.-F., Jerjees, D. A., Al-Kaabi, M., Hamed, M. R., …Ellis, I. O. (2015). Clinical and biological significance of glucocorticoid receptor (GR) expression in breast cancer. Breast Cancer Research and Treatment, 150(2), 335-346. https://doi.org/10.1007/s10549-015-3335-1

The glucocorticoid receptor (GR) is a member of the nuclear receptor superfamily of transcription factors, which exerts anti-proliferative and anti-apoptotic activities. The GR is expressed in a large proportion of breast cancer (BC) although levels... Read More about Clinical and biological significance of glucocorticoid receptor (GR) expression in breast cancer.

The mammalian target of rapamycin complex 1 (mTORC1) in breast cancer: the impact of oestrogen receptor and HER2 pathways (2015)
Journal Article
Jerjees, D. A., Negm, O. H., Alabdullah, M. L., Mirza, S., Alkaabi, M., Hameed, M. R., …Rakha, E. A. (2015). The mammalian target of rapamycin complex 1 (mTORC1) in breast cancer: the impact of oestrogen receptor and HER2 pathways. Breast Cancer Research and Treatment, 150(1), 91-103. https://doi.org/10.1007/s10549-015-3308-4

The mammalian target of rapamycin complex 1 (mTORC1) is a downstream of the PI3K/Akt pathway which affects cancer development. mTORC1 has many downstream signalling effectors that can enhance different cellular responses. This study aims to investiga... Read More about The mammalian target of rapamycin complex 1 (mTORC1) in breast cancer: the impact of oestrogen receptor and HER2 pathways.