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GZMK-expressing CD8 T cells promote recurrent airway inflammatory diseases.
Nature
January 2025
Laboratory of Dynamic Immunobiology, Institute for Immunology, Tsinghua University, Beijing, China.
Inflammatory diseases are often chronic and recurrent, and current treatments do not typically remove underlying disease drivers. T cells participate in a wide range of inflammatory diseases such as psoriasis, Crohn's disease, oesophagitis and multiple sclerosis, and clonally expanded antigen-specific T cells may contribute to disease chronicity and recurrence, in part by forming persistent pathogenic memory. Chronic rhinosinusitis and asthma are inflammatory airway diseases that often present as comorbidities.
View Article and Find Full Text PDFEvaluating Antigen- and Vector-Specific Immune Responses of a Recombinant Pichinde Virus-Based Vaccine Expressing the Lymphocytic Choriomeningitis Virus Nucleoprotein.
Vaccines (Basel)
December 2024
Department of Veterinary and Biomedical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN 55108, USA.
Background: Live viral vector-based vaccines are known to elicit strong immune responses, but their use can be limited by anti-vector immunity. Here, we analyzed the immunological responses of a live-attenuated recombinant Pichinde virus (PICV) vector platform (rP18tri).
Methods: To evaluate anti-PICV immunity in the development of vaccine antigen-specific immune responses, we generated a rP18tri-based vaccine expressing the lymphocytic choriomeningitis virus (LCMV) nucleoprotein (NP) and administered four doses of this rP18tri-NPLCMV vaccine to mice.
The physiological landscape and specificity of antibody repertoires are consolidated by multiple immunizations.
Elife
December 2024
Department of Biosystems Science and Engineering, ETH Zürich, Basel, Switzerland.
Diverse antibody repertoires spanning multiple lymphoid organs (i.e., bone marrow, spleen, lymph nodes) form the foundation of protective humoral immunity.
View Article and Find Full Text PDFTIGIT and PD-L1 co-blockade promotes clonal expansion of multipotent, non-exhausted antitumor T cells by facilitating co-stimulation.
Nat Cancer
December 2024
Genentech, South San Francisco, CA, USA.
Blockade of immune checkpoints PD-1 and TIGIT has demonstrated activity in mouse tumor models and human patients with cancer. Although these coinhibitory receptors can restrict signaling in CD8 T cells by regulating their associated co-stimulatory receptors CD28 and CD226, the functional consequences of combining PD-1 and TIGIT blockade remain poorly characterized. In mouse tumor models, we show that combination blockade elicited CD226-driven clonal expansion of tumor antigen-specific CD8 T cells.
View Article and Find Full Text PDFDual Activation-Induced Marker Combinations Efficiently Identify and Discern Antigen-Specific and Bystander-Activated Human CD4 T Cells.
Eur J Immunol
December 2024
Infectious Diseases Unit, Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico, Milan, Italy.
Identifying activated T lymphocytes and differentiating antigen-specific from bystander T cells is crucial for understanding adaptive immune responses. This study investigates the efficacy of activation-induced markers (AIMs) in distinguishing these cell populations. We measured the expression of commonly used AIMs (CD25, CD38, CD40L, CD69, CD137, HLA-DR, ICOS, and OX40) in an in vitro T-cell activation system and evaluated their sensitivity, specificity, and positive predictive value.
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