Innate immune system receptors and cells (None)

The innate immune system serves as the immediate, non-specific defense mechanism of the host, comprising a diverse array of receptors and specialized cell types. It primarily functions through Pattern Recognition Receptors (PRRs), such as Toll-like receptors (TLRs) and NOD-like receptors (NLRs), which identify conserved microbial structures known as pathogen-associated molecular patterns (PAMPs) [1][2]. Cellular components including macrophages, neutrophils, and natural killer (NK) cells execute critical tasks such as phagocytosis, the release of inflammatory cytokines, and the activation of the adaptive immune system [3]. Dysregulation of these pathways is central to the pathogenesis of various conditions, including sepsis, autoinflammatory disorders, and chronic inflammatory diseases like atherosclerosis [4]. Pharmacological intervention typically targets specific molecular components within this system, such as using TLR agonists to enhance vaccine efficacy or cytokine antagonists to suppress pathological inflammation [5]. Because this entry describes a broad physiological category rather than a single molecular entity, it is considered a high-level classification in drug discovery rather than a discrete therapeutic target [6]. Citations: [1] Janeway CA Jr, Medzhitov R. Innate immune recognition. Annu Rev Immunol. 2002;20:197-216. [2] Takeuchi O, Akira S. Pattern recognition receptors and inflammation. Cell. 2010;140(6):805-820. [3] Medzhitov R. Origin and physiological roles of inflammation. Nature. 2008;454(7203):428-435. [4] Kumar V, et al. Robbins & Cotran Pathologic Basis of Disease. 10th ed. Elsevier; 2020. [5] Mangan MSJ, et al. Targeting the NLRP3 inflammasome in inflammatory diseases. Nat Rev Drug Discov. 2018;17(8):588-606. [6] Beutler BA. Microbe sensing, decomplexed. Nature. 2009;460(7252):204-209.

Other names

Innate immunityNon-specific immune systemNatural immunityPattern recognition system

Modulation of pattern recognition receptors (PRRs), inhibition of pro-inflammatory cytokines, and blockade of the complement cascade to regulate immune activation and inflammation.