Dendritic cell-mediated T cell activation

Dendritic cell-mediated T cell activation is a crucial process for adaptive immunity, where dendritic cells present processed antigens on major histocompatibility complex (MHC) molecules along with co-stimulatory signals (e.g., CD80, CD86, CD40) to activate naïve T cells. This process determines the direction and magnitude of immune responses, influencing outcomes such as pathogen clearance, tumor rejection, and maintenance of immune tolerance. Therapeutic modulation of this pathway, using drugs like CTLA-4-Ig and anti-CD3 antibodies, is central to treatments for autoimmune diseases and cancer immunotherapy.

Other names

Dendritic cell-induced T cell activationDC-T cell interactionAntigen-presenting cell modulation of T cell response

Blocking co-stimulatory signals to prevent T cell activation (immune suppression) or enhancing antigen presentation or co-stimulation to boost T cell activation (immune stimulation, cancer immunotherapy).