منابع مشابه
Protective CD8+ T cell memory without help
CD8 T cells are a key component of the host adaptive immune responses that helps to eradicate invading virus and other cell-associated pathogens. The CD8 T cell responses to an acute infection consist of three well defined phases: naïve pathogen-specific T cells (CD8N) become activated and expand resulting in large numbers of effector cells (CD8E); the contraction of these CD8E into memory cell...
متن کاملMemory CD8 T cell transcriptional plasticity
Memory CD8 T cells generated after acute viral infections or live vaccines can persist for extended periods, in some instances for life, and play an important role in protective immunity. This long-lived immunity is achieved in part through cytokine-mediated homeostatic proliferation of memory T cells while maintaining the acquired capacity for rapid recall of effector cytokines and cytolytic m...
متن کاملCD8+ memory T-cell inflation renders compromised CD4+ T-cell-dependent CD8+ T-cell immunity via naïve T-cell anergy
Whether inflation of CD8+ memory T (mT) cells, which is often derived from repeated prime-boost vaccinations or chronic viral infections in the elderly, would affect late CD8+ T-cell immunity is a long-standing paradox. We have previously established an animal model with mT-cell inflation by transferring ConA-stimulated monoclonal CD8+ T cells derived from Ova-specific T-cell-receptor transgeni...
متن کاملMemory CD4 T cells enhance primary CD8 T-cell responses.
CD4 T-cell help is required for optimal memory CD8 T-cell responses. We have found that engaging preexisting CD4 Th1, but not Th2, memory cells at the time of CD8 T-cell priming results in increased CD8 effector responses to both bacterial and viral pathogens. The enhanced responses are characterized by increased numbers of cytokine-producing, antigen-specific cells. These findings suggest that...
متن کاملCD8 T cell memory in B cell-deficient mice
Antigen presentation by B cells and persistence of antigen-antibody complexes on follicular dendritic cells (FDC) have been implicated in sustaining T cell memory. In this study we have examined the role of B cells and antibody in the generation and maintenance of CD8+ cytotoxic T lymphocyte (CTL) memory. To address this issue we compared CTL responses to lymphocytic choriomeningitis virus (LCM...
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ژورنال
عنوان ژورنال: Frontiers in Immunology
سال: 2018
ISSN: 1664-3224
DOI: 10.3389/fimmu.2018.02692