T cell-mediated immune response to mycobacterial antigens

The T cell-mediated immune response to mycobacterial antigens is a critical mechanism in adaptive immunity against mycobacterial infections, notably tuberculosis. Upon recognition of mycobacterial antigens presented via MHC molecules by antigen-presenting cells (mainly dendritic cells and macrophages), both CD4⁺ (Th1, regulatory) and CD8⁺ T cells become activated. These cells produce cytokines such as IFN-γ and TNF-α, which stimulate macrophages to destroy intracellular bacteria, promote granuloma formation, and influence the balance between protective immunity and tissue pathology[1][3][6][7]. The process involves a complex interplay of immune activation and regulation, with genetic and pathogen factors influencing the outcome (latent infection, active disease, or clearance)[7][4]. Therapeutically, the response can be harnessed by vaccines and immunomodulatory drugs, but excessive or defective T cell responses limit efficacy and contribute to pathology[6][1][4]. This is an immune response and not a singular molecular entity or classical therapeutic target, hence not suitable for molecular target annotation.

Other names

T cell response to mycobacteriaT cell immunity in tuberculosismycobacteria-specific cell-mediated immune response

Immunomodulation (enhancing or suppressing T cell activation); Cytokine signaling manipulation; Induction of autophagy for antigen presentation