Innate and adaptive immune system components via antigen presentation and pattern-recognition receptor–mediated uptake

This target entry describes a complex biological process rather than a single molecular entity, encompassing the coordinated actions of the innate and adaptive immune systems. It involves the detection of pathogen-associated molecular patterns (PAMPs) by pattern-recognition receptors (PRRs), such as Toll-like receptors (TLRs) and C-type lectin receptors, which triggers the uptake of antigens by professional antigen-presenting cells (APCs) [Janeway & Medzhitov, 2002]. Following uptake, antigens are processed and loaded onto Major Histocompatibility Complex (MHC) molecules for presentation to T-lymphocytes, a critical step for initiating adaptive immunity [Roche & Furuta, 2015]. This pathway is a primary focus for vaccine development, where adjuvants are used to target PRRs to enhance the efficiency of antigen presentation and the subsequent memory response [Koff et al., 2013]. Therapeutic modulation of this system is also explored in cancer immunotherapy to overcome tumor-induced immunosuppression by promoting robust dendritic cell activation [Brubaker et al., 2015]. Because it involves a complex cascade of signaling molecules and cellular interactions, it is not a single molecular entity but rather a coordinated biological pathway [Janeway & Medzhitov, 2002].

Other names

PRR-mediated antigen presentationInnate-adaptive immune interfaceAntigen processing and presentation pathwayImmune system components

Activation of pattern-recognition receptors (PRRs) to stimulate antigen uptake, processing, and subsequent presentation on MHC molecules to activate T-cells.