Intracellular Anti-Viral Defense Mechanism

The intracellular anti-viral defense mechanism refers to the collection of cellular processes and molecular pathways that detect, restrict, and eliminate viral infections within host cells. These mechanisms are a critical component of both intrinsic and innate immunity, acting as the first line of defense against viruses before adaptive immune responses are mobilized. Key components include Pattern Recognition Receptors (PRRs) that detect viral PAMPs, intrinsic immunity mediated by constitutively expressed restriction factors, and innate immunity triggered by type I interferon production. These pathways lead to viral genome silencing, autophagy induction, interferon response, and apoptosis to limit viral spread. Viruses have evolved evasion strategies, making understanding these mechanisms crucial for developing novel antivirals targeting host pathways.

Other names

Intrinsic antiviral immunityInnate antiviral immunity (intracellular)Cell-autonomous antiviral defense

Various: induction of antiviral state, direct inhibition of viral replication, promotion of viral degradation, programmed cell death