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An IgG-Optimized Enzyme-Linked Lectin Assay (ELLA) for Quantitative Analysis of Immunoglobulin Glycosylation

Antibody Fc glycosylation is modulated in a variety of disease and immune response contexts, altering downstream functional responses including antibody-dependent cellular cytotoxicity through modified immune cell Fc receptor binding. Accessible, high-throughput glycosylation assays such as enzyme-linked lectin assays (ELLAs) are essential to advance understanding of glycosylation regulation and function. However, current ELLA protocols lack standardization and optimization, and results are...

bioRxiv 9d ago

Autoantibodies Drive Fc Gamma Receptor-Dependent Colon Inflammation During Immune Checkpoint Blockade

Immune-related adverse events (irAEs), particularly colitis, are major limitations of immune checkpoint inhibitor (ICI) therapy, but their mechanisms remain poorly understood. Here we show that endogenous autoantibodies (AAbs) can promote ICI-associated colitis through Fc gamma receptor (FcgR) dependent pathways. IgG from melanoma patients treated with pembrolizumab, nivolumab, or ipilimumab, with or without severe colitis, was transferred into wild-type or humanized FcgR (hFcgR) mice...

bioRxiv 3d ago

Novel synthetic biomolecule degrades disease-related proteins

Novel synthetic biomolecule degrades disease-related proteins Lisa Lock Scientific Editor Robert Egan Associate Editor Northwestern Medicine scientists have developed a novel synthetic biomolecular condensate that can degrade intracellular disease-causing proteins, providing a framework for new therapeutic approaches for a wide range of diseases, as detailed in a recent study published in Nature Communications. Shana Kelley, Ph.D., the Neena B. Schwartz Professor of Chemistry, Biomedical...

Phys.org 5d ago