CD23, the low-affinity immunoglobulin E receptor, is an important modulator of the allergic response and of diseases such as rheumatoid arthritis. The proteolytic release of CD23 from cells is considered a key event in the allergic response. Here we used loss-of-function and gain-of-function experiments with cells lacking or overexpressing candidate CD23-releasing enzymes (ADAM8, ADAM9, ADAM10, ADAM12, ADAM15, ADAM17, ADAM19 and ADAM33), ADAM-knockout mice and a selective inhibitor to identify ADAM10 as the main CD23-releasing enzyme in vivo. Our findings provide a likely target for the treatment of allergic reactions and set the stage for further studies of the involvement of ADAM10 in CD23-dependent pathologies.
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http://dx.doi.org/10.1038/ni1399 | DOI Listing |
Platelets
December 2024
Department of Immunology and Immunotherapy, College of Medicine and Health, University of Birmingham, Birmingham, UK.
Invasive non-typhoidal infections are responsible for >75 000 deaths/year and >500 000 cases/year globally. Seventy-five percent of these cases occur in Sub-Saharan Africa, an increasing number of which are from multi-drug resistant strains. Interactions between bacteria and platelets can lead to thrombus formation, which can be beneficial for control of infection (immunothrombosis), or harmful through uncontrolled inflammation and organ damage (thromboinflammation).
View Article and Find Full Text PDFImmunol Rev
November 2024
Université Paris Saclay, Le Kremlin-Bicetre, France.
Antagonistic monoclonal antibodies (mAbs) targeting inhibitory immune checkpoints have revolutionized the field of oncology. CTLA-4, PD-1, and LAG3 are three co-inhibitory receptors, which can be expressed by subsets of T cells and which play a role in the regulation of adaptive immune responses. Blocking these immune checkpoints receptors (or their ligands) with antagonistic antibodies can lead to tumor regressions and lasting remissions in some patients with cancer.
View Article and Find Full Text PDFLab Chip
December 2024
Department of Chemical Engineering, Vrije Universiteit Brussel, 1050 Brussels, Belgium.
Many proteins, especially eukaryotic proteins, membrane proteins and protein complexes, are challenging to study because they are difficult to purify in their native state without disrupting the interactions with their partners. Hence, our lab developed a novel purification technique employing Nanobodies® (Nbs). This technique, called nanobody exchange chromatography (NANEX), utilises an immobilised low-affinity Nb to capture the target protein, which is subsequently eluted - along with its interaction partners - by introducing a high-affinity Nb.
View Article and Find Full Text PDFFront Immunol
November 2024
Department of Biology, Division of Genetics, Nikolaus-Fiebiger-Center for Molecular Medicine, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), Erlangen, Germany.
Hum Immunol
November 2024
Department of Clinical Laboratory, Zhongshan Chenxinghai Hospital of Integrated Traditional Chinese and Western Medicine, Zhongshan, Guangdong, China.
Human immune response evolved in virus clearance and gene expression levels of immune response may be associated with progression of Coronavirus disease 2019 (COVID-19). Our current study aims to investigate the relationship between differential gene expression of immune response and progression of COVID-19. A total of 50 participants of COVID-19 group were studied, compared with 39 participants of healthy control group.
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