European Journal of Immunology

We performed combined proteome and transcriptome analysis of human isotype-defined B cell subsets. IgG4-switched B cells were most distinct from naive B cells in terms of mRNA as well as protein expression profiles. SDR16C5 was identified as uniquely upregulated in IgG4-switched B cells. ABSTRACT Antibodies produced by B cells aid in the recognition and clearance … Read more

Immunoglobulin products derived from pooled global plasma reflect population-level antiviral immunity. Analysis of batches from 2017 to 2023 reveals pandemic-driven shifts in viral antibody profiles and a concurrent rise in autoantibodies, notably against TRIM21/Ro52, highlighting links between SARS-CoV-2, immunity debt, and autoimmunity. ABSTRACT Immunoglobulin (Ig) replacement therapy is commonly used to prevent infections in individuals … Read more

Changes in adaptive immunity in autoimmune diseases and aging exhibit both shared and distinct alterations in immune cell compartments. Immune vulnerability is influenced by these alterations, which affect infection susceptibility and vaccination response in these clinically different but immunologically related conditions. ABSTRACT Immunologically vulnerable populations (IVP) are particularly at risk of infection due to dysregulated … Read more

This is an update to the Guidelines for the Use of Flow Cytometry and Cell Sorting in Immunological Studies (Third Edition), Chapter 12C, by Cossarizza et al. A 38-marker full-spectrum flow cytometry panel enabling high-resolution profiling of human γδ T cells across blood and lymphoid tissues, including robust identification of rare, tissue-adapted subsets.

Allergic reaction-derived IL-33 activates ST2 to trigger selective eosinophil activation. IL-33 in a type 2 immune response environment induces biogenesis of lipid bodies in eosinophils, platforms for the generation of lipid mediators, and selectively triggers LTC4 production. ABSTRACT Like pieces of a puzzle, IL-33, eosinophils, and cysteinyl leukotrienes seem to come together and orchestrate allergic … Read more

Our cover features images related to flow cytometry techniques widely used for analysis of function and phenotypes of major human and murine immune cell subsets, superimposed on a multidimensional immune cell population scatter plot. These images are taken from the third edition of EJI’s Flow Cytometry Guidelines by Cossarizza et al., a comprehensive resource prepared … Read more

European Journal of Immunology, Volume 56, Issue 3, March 2026.

The CD40-CD40L pathway is often dysregulated in B-cell-driven autoimmune diseases, making the development of CD40L inhibitors a promising therapeutic approach in managing autoimmune responses. We developed an inhibitory anti-CD40L Fab fragment, Fab20, and demonstrated that Fab20 effectively suppresses B-cell proliferation, differentiation, and antibody production in vitro. Made with Biorender. ABSTRACT Dysregulation of the CD40-CD40L axis … Read more

We developed a 50-plex imaging protocol using the MACSima platform to characterize the microarchitecture of germinal centers in secondary lymphoid tissues. This workflow combines tissue processing, automated cyclic imaging, image preprocessing, and a new analysis method that detects morphological changes in irregularly shaped stromal cells.

Human lamina propia mononuclear cells (LPMC) were isolated from intestinal biopsies and resections, as well as peripheral blood mononuclear cells (PBMC) from blood. Using flow cytometry approaches, we characterized cDC subsets and assessed their functional capacity through T-cell coculture assays (after isolation of the different subsets of cDC using sorter cytometry). This approach enabled a … Read more