The Journal of Immunology

J Immunol. 2026 Aug 4;215(8):vkag200. doi: 10.1093/jimmun/vkag200. ABSTRACT Lysosomes drive antigen proteolysis and peptide loading for major histocompatibility complex class II (MHCII) presentation in antigen-presenting cells (APCs), enabling activation of peptide-specific CD4+ T helper cells (CD4+ Th cells). Tight regulation of endocytic trafficking, protease activity, and peptide editing is required to generate stable peptide-MHCII complexes … Read more

J Immunol. 2026 Aug 4;215(8):vkag209. doi: 10.1093/jimmun/vkag209. ABSTRACT In the established model of classical trained immunity, metabolic and epigenetic hubs serve as central integrators of innate memory. While typically associated with proinflammatory reprogramming, the regulation of autophagy and cellular proteostasis remains essential for guiding macrophage differentiation and ensuring efficient pathogen clearance without excessive inflammation. In … Read more

J Immunol. 2026 Aug 4;215(8):vkag221. doi: 10.1093/jimmun/vkag221. NO ABSTRACT PMID:42580673 | DOI:10.1093/jimmun/vkag221

J Immunol. 2026 Aug 4;215(8):vkag216. doi: 10.1093/jimmun/vkag216. ABSTRACT Healthy aging relies on the maintenance of a diverse T cell pool. This diversity is ensured by balancing thymic output, differentiation of naive into memory T cells, T cell proliferation and cell death. For naive T cells, the balance of these processes differs between standard laboratory mice … Read more

J Immunol. 2026 Aug 4;215(8):vkag230. doi: 10.1093/jimmun/vkag230. ABSTRACT Osteoarthritis (OA), the most prevalent degenerative joint disease, leads to significant disability in the elderly and is characterized by functional and structural deterioration of the knee joint. This study aimed to investigate the therapeutic potential of skullcapflavone II (SkII), a flavonoid known for its anti-inflammatory properties, in … Read more

J Immunol. 2026 Aug 4;215(8):vkag227. doi: 10.1093/jimmun/vkag227. ABSTRACT B-cell responses rely on a tightly coordinated interplay between transcriptional programs and metabolic reprogramming. Upon activation, B cells remodel their metabolic profiles, with enhanced glutamine metabolism supporting biomass synthesis and proliferation. However, whether and how glutaminolysis underpins B-cell responses in early vertebrates remains largely unexplored. Here, using … Read more

J Immunol. 2026 Aug 4;215(8):vkag222. doi: 10.1093/jimmun/vkag222. ABSTRACT The immune system initially protects hosts against viral pathogens, with chemokines guiding immune cell movement. However, their expression patterns and immune cell recruitment mechanisms during transmissible gastroenteritis virus (TGEV) infection are still not fully understood. Here, we identified a distinct chemokine expression profile in intestinal epithelial cells … Read more

J Immunol. 2026 Aug 4;215(8):vkag218. doi: 10.1093/jimmun/vkag218. ABSTRACT Golden hamster (Mesocricetus auratus) and ferret (Mustela putorius furo) are important animal models in studies of human infectious disease. They are used widely to investigate pathogen-spreading mechanisms and host immunology to evaluate the safety and efficacy of small molecules, biologic drugs and vaccines. To this end, immunoglobulin … Read more

J Immunol. 2026 Aug 4;215(8):vkag226. doi: 10.1093/jimmun/vkag226. ABSTRACT CCR2+ monocytes are recruited to sites of acute myocardial injury, where they play a critical role in clearing necrotic debris and replenishing the depleted resident macrophage population. Although this response is necessary for early tissue repair, prolonged activation of inflammatory pathways and persistent recruitment of CCR2+ monocytes … Read more

J Immunol. 2026 Aug 4;215(8):vkag189. doi: 10.1093/jimmun/vkag189. ABSTRACT COVID-19 continues to present ongoing global health challenges driven by diverse immune responses and heterogeneous clinical outcomes. The ACCORD trial evaluated 3 investigational treatments-bemcentinib, tozorakimab, and zilucoplan-in patients hospitalized with COVID-19, each of which has demonstrated clinical efficacy. To better understand their molecular mechanisms, we conducted a … Read more