Mycobacterial antigen presentation enhancement via phagolysosomal escape

"Mycobacterial antigen presentation enhancement via phagolysosomal escape" describes a process by which Mycobacterium tuberculosis (Mtb) evades macrophage killing by escaping from the phagosome into the cytosol of the host cell. This escape, mediated by factors like the ESX-1 secretion system and ESAT-6 protein, enables bacterial antigens to access the cytosolic major histocompatibility complex class I (MHC-I) processing pathway and impacts both pathogen survival and host immune recognition. The process enhances mycobacterial virulence, supports immune evasion, and modulates how antigens are presented to T cells, but is not a targetable molecule in itself[1][2][3][4][6].

Other names

Mycobacterial phagosomal escapeMtb cytosolic translocationPhagosome rupture by Mycobacterium tuberculosis

Enhancement or inhibition of mycobacterial ESX-1/ESAT-6 secretion system may modulate escape and antigen presentation. Phagosome maturation promotion (general immunomodulatory strategies). No drugs act directly on the process named here; this is a general immunological concept rather than a ligand–receptor or enzyme–inhibitor interaction.