Los receptores del sistema inmunitario innato

Abstract

The innate immune system (IIS) is the first line of defense against infectious agents and the detection of tissue damage. The IIS recognizes a group of molecules essential for the survival of microorganisms, which are called pathogen-associated molecular patterns (PAMPs). In addition, IIS recognizes molecules produced and released by damaged or stressed cells, called damage associated molecular patterns (DAMPs). Both PAMPs and DAMPs are recognized by a group of evolutionarily conserved receptors on IIS cells called pattern recognition receptors (PRRs). The recognition of PAMPs and DAMPs by PRRs present in IIS cells leads to different effects on the immune response, including phagocytosis, production of reactive oxygen species (ROS), and expression of genes related to the production of inflammatory and antiviral mediators. For this reason, PRRs are central elements in IIS to respond to pathogens and tissue damage.