Transmembrane orientation and extracellular juxtamembrane residues of GP130 are critical for signal transduction

J Immunol. 2026 Jun 7;215(6):vkag118. doi: 10.1093/jimmun/vkag118. ABSTRACT Glycoprotein 130 (GP130) is an archetypal class I cytokine receptor that serves as a shared signalling subunit for a group of cytokines known as interleukin 6 (IL-6)-type cytokines. GP130 does not have an intrinsic kinase activity and relies on Janus kinases (JAK) 1, 2, or Tyrosine kinase … Read more

Increased ULBP1 by doxorubicin sensitizes neuroblastoma to γδT-cell cytotoxicity

J Immunol. 2026 Jun 7;215(6):vkag144. doi: 10.1093/jimmun/vkag144. ABSTRACT Neuroblastoma (NB) is the most common extracranial solid tumor in children and remains a major therapeutic challenge in high-risk patients because of frequent recurrence and metastasis. γδT cells are a unique lymphocyte subset with potent antitumor activity and are widely distributed in NB tumors. However, the immunosuppressive … Read more

Mitochondrial potential reflects T cell fitness and function during cancer immunotherapy

J Immunol. 2026 Jun 7;215(6):vkag120. doi: 10.1093/jimmun/vkag120. ABSTRACT Checkpoint inhibitors have transformed cancer treatment, yet predicting responses remains challenging. Mitochondrial quality decreases in tumor infiltrating lymphocytes and correlates with impaired antitumor immunity in animal models. Mitochondrial membrane potential (MMP) increases with T cell activation and may also indicate cellular dysfunction. Here, we assessed the MMP … Read more

Compensatory relationships determine the impact of TGF-β on the humoral immune response to hepatitis B surface antigen

J Immunol. 2026 Jun 7;215(6):vkag129. doi: 10.1093/jimmun/vkag129. ABSTRACT Despite an effective vaccine against the hepatitis B virus (HBV), there are about 250 million people living with chronic HBV (CHB) worldwide and one million deaths annually. Most children and about 5% of adults exposed to HBV will fail to clear the virus, developing a lifelong infection. … Read more

Metabolic adaptations of inflammatory macrophages govern ferroptosis susceptibility via the GCH1-BH4-iNOS axis

J Immunol. 2026 Jun 7;215(6):vkag146. doi: 10.1093/jimmun/vkag146. ABSTRACT In inflammatory tissue niches, macrophages encounter intense oxidative stress due to their own production of reactive oxygen and nitrogen species as part of antimicrobial defense. Our findings reveal that inflammatory macrophages deploy distinct, context-dependent redox-protective mechanisms to survive this self-inflicted stress, thereby avoiding ferroptotic cell death. Specifically, … Read more

Human XIRP1 is a new podosome protein targeting cytosolic bacteria as part of the IFN-γ defense program

J Immunol. 2026 Jun 7;215(6):vkag116. doi: 10.1093/jimmun/vkag116. ABSTRACT Interferon-gamma (IFN-γ) is a powerful transactivating signal eliciting hundreds of IFN-stimulated genes (ISGs) in humans to help combat infection. Most ISGs remain uncharacterized, and here we searched for actin-binding candidates that could potentially target intracellular pathogens to block their spread or promote immune cell migration into infected … Read more

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