Cytotoxic T-cell Activation via Antigen Presentation by Dendritic Cells (CTL Activation)

Cytotoxic T-cell activation via antigen presentation by dendritic cells is a fundamental process in adaptive immunity. It involves the priming and activation of CD8+ cytotoxic T lymphocytes (CTLs) through the presentation of antigens by dendritic cells (DCs), which are specialized antigen-presenting cells (APCs). This interaction is essential for initiating immune responses against intracellular pathogens, such as viruses, and for targeting tumor cells. Dendritic-cell-mediated antigen presentation is indispensable for activating naive cytotoxic T-cells, shaping both protective immune responses against infections/tumors and maintaining tolerance to self-antigens depending on context.

Other names

CD8+ T cell activationDendritic cell-mediated antigen presentation to T cellsMHC Class I antigen presentationT cell primingT cell costimulation

Manipulation of this pathway underlies many immunotherapies for cancer and infectious diseases. Enhancing dendritic cell function can improve vaccine efficacy, while dysregulation may contribute to autoimmunity or immune evasion by tumors.