Dendritic cell maturation marker (CD40, CD80, CD86, MHC class II) (None (individually: CD40, CD80, CD86, MHC-II))

During dendritic cell maturation, CD40, CD80, CD86, and MHC class II molecules are upregulated on the cell surface, providing key costimulatory signals and antigen presentation capacity needed for optimal T cell activation. CD40 promotes maturation and functional activation, while CD80 and CD86 act as ligands for T cell receptors (CD28 and CTLA4), and MHC class II presents exogenous antigens to CD4^+^ T cells. Their combined expression is routinely used to identify mature DCs in research and to assess immunogenicity of vaccines and immunotherapies. Each marker is individually targeted in clinical applications, with modulation of their pathways showing promise in cancer, autoimmune diseases, and vaccine development.

Other names

CD40 (also known as TNFRSF5)CD80 (also known as B7-1)CD86 (also known as B7-2)MHC class II (also referred to as HLA-DR, HLA-DP, HLA-DQ in humans; I-A/I-E in mice)

Agonistic antibodies stimulate receptor signaling (CD40); Inhibitory fusion proteins block costimulation (CTLA4-Ig blocks CD80/CD86 interaction with CD28); Adjuvants upregulate marker expression, promoting immune activation; Antigen presentation via MHC class II primes T cells