Inflammasome signaling molecules

Inflammasome signaling molecules are a collection of proteins that assemble into large intracellular complexes to mediate the innate immune response (Schroder & Tschopp, 2010). These complexes typically consist of a sensor protein (such as NLRP3, NLRC4, or AIM2), an adaptor protein known as ASC (Apoptosis-associated speck-like protein containing a CARD), and the effector enzyme Caspase-1 (Latz et al., 2013). Upon detection of pathogen-associated molecular patterns (PAMPs) or danger-associated molecular patterns (DAMPs), these molecules aggregate to activate Caspase-1, which then processes the pro-inflammatory cytokines Interleukin-1 beta (IL-1β) and Interleukin-18 into their active forms (Mangan et al., 2018). This signaling cascade also triggers pyroptosis, a form of programmed cell death that releases further inflammatory signals into the extracellular environment (Schroder & Tschopp, 2010). Dysregulation of inflammasome signaling is a hallmark of various inflammatory diseases, including cryopyrin-associated periodic syndromes (CAPS), gout, and type 2 diabetes (Dinarello, 2011). Therapeutic interventions targeting these molecules include small-molecule inhibitors of NLRP3 and monoclonal antibodies that neutralize IL-1β, aiming to dampen the excessive inflammatory response (Mangan et al., 2018).

Other names

Inflammasome complexNLR signaling pathway componentsInflammasome pathwayNLR-ASC-Caspase-1 axis

Inhibition of sensor activation (e.g., NLRP3 ATPase activity), inhibition of Caspase-1 proteolytic activity, or neutralization of downstream cytokines such as Interleukin-1 beta and Interleukin-18.