The Alternative Polyadenylation Factor CFIm25 Orchestrates Macrophage Antibacterial Immunity by Amplifying TAB2-Mediated MAPK and NF-κB Signaling During Salmonella Infection

This study reveals that the alternative polyadenylation factor CFIm25 enhances macrophage antibacterial immunity against *Salmonella* by preventing 3' UTR lengthening of key targets like TAB2, thereby amplifying MAPK and NF-κB signaling to promote pro-inflammatory responses and suppress the immunosuppressive M2 state.

Barua, A., Mukherjee, S., Bourgeois, J. + 1 more2026-02-28🛡️ immunology

Targeting phosphodiesterase 10A disrupts MAPK signaling pathways in the tumor microenvironment to unleash antitumor immunity

The novel PDE10A inhibitor ADT-030 suppresses tumor growth by disrupting MAPK signaling in both tumor cells and myeloid-derived suppressor cells to induce immunogenic cell death and reshape the tumor microenvironment, thereby unleashing a host-dependent antitumor immune response that synergizes with anti-PD-1 therapy.

Gazi, M. Y., Ye, Y., Okoko, O. D. + 19 more2026-02-28🛡️ immunology

Analysis of tumor-derived and cross-presented peptide antigens defines improved immunotherapeutic strategies

This study utilizes immunopeptidomic analysis to characterize the distinct landscape of cross-presented glioblastoma antigens, revealing that APC-intrinsic processing limits tumor-specific epitope presentation and demonstrating that mRNA vaccines targeting these specific cross-presented antigens effectively delay tumor growth and elicit robust T cell responses.

Cui, Y., Phuong, K., Temple, H. + 4 more2026-02-27🛡️ immunology

Regulatory T cells restrain IL-15-mediated cytotoxic and bystander T cell activity in mucosal tissue without compromising antigen-driven memory

This study demonstrates that regulatory T cells (Tregs) protect mucosal tissues from excessive damage by restraining IL-15-mediated bystander and cytotoxic CD8 T cell activity through the limitation of IL-2 and IL-15 trans-presentation, while preserving essential antigen-driven memory responses.

Cruz Talavera, I., Graham, J. B., Swarts, J. L. + 8 more2026-02-27🛡️ immunology

Dose-dependent activation of Syk and SHIP1 by LynA and LynB at steady state creates a threshold for macrophage signaling in the absence of receptor engagement

The study demonstrates that the combined steady-state expression levels of LynA and LynB isoforms, rather than their specific identity, determine a dose-dependent threshold for macrophage signaling by simultaneously activating both positive-regulatory Syk and negative-regulatory SHIP1, thereby capping downstream responses in the absence of receptor engagement.

Senevirathne, S. E., Sellner, C. E., Toledo Ramos, S. + 1 more2026-02-27🛡️ immunology

Contrasting roles for IKK regulated inflammatory signalling pathways for development and maintenance of type 1 and adaptive γδ T cells

This study utilizes mouse genetics to demonstrate that IKK-regulated inflammatory pathways play distinct, subset-specific roles in γδ\gamma\delta T cells, where IKK-dependent NF-κ\kappaB activation is essential for the development of type 1 cells but only for the long-term survival of adaptive cells, while IKK-mediated repression of RIPK1 is crucial for preventing necroptosis in peripheral γδ\gamma\delta T cells, collectively revealing a regulatory complexity that contrasts with β\beta T cell biology.

Islam, F., Williams, C., Hogan, T. + 3 more2026-02-26🛡️ immunology

Serum IL-6 and IL-18 Responses in Pediatric COVID-19: Role of Vitamin D Status in a Cohort from Azerbaijan

This study of 170 Azerbaijani children found that while SARS-CoV-2 infection significantly elevated IL-6 and IL-18 levels compared to healthy controls, vitamin D deficiency showed only a non-significant trend toward further increasing these inflammatory cytokines, suggesting a potential but unproven modulatory role for vitamin D in pediatric COVID-19 responses.

Huseynova, I. Y., Hasanov, A. Q., Sultanova, N. H. + 4 more2026-02-26🛡️ immunology

Macrophage Iron Metabolism in Allografts and Tumors

This study reveals that macrophages in cardiac allografts exhibit higher intracellular iron levels and SLC11A1 expression compared to those in tumors, and demonstrates that myeloid-specific deletion of Slc11a1 alleviates macrophage inflammation and cardiac allograft rejection, identifying SLC11A1 as a potential therapeutic target for regulating immune responses in both transplant and tumor contexts.

Li, X., Zhang, X., Li, R. + 14 more2026-02-26🛡️ immunology