Inflammatory protein release

Inflammatory protein release refers to the process by which cells (e.g., macrophages, dendritic cells, endothelial and tissue cells) secrete mediators such as pro-inflammatory cytokines (IL-1β, IL-6, TNF-α), chemokines, DAMPs (e.g., HMGB1), and enzymes during an inflammatory response. Pattern-recognition receptors (e.g., TLRs) sense PAMPs/DAMPs, activating intracellular pathways (NF-κB, MAPK, IRF3; as well as JAK-STAT and PI3K/Akt downstream of cytokine receptors) that drive transcription and secretion of inflammatory mediators. Inflammasomes activate caspase-1 to mature and release IL-1 family cytokines and can promote HMGB1 release; HMGB1 itself signals primarily via TLR4 to amplify cytokine production. Pathologic amplification of this process underlies cytokine storm in severe infections and systemic inflammatory states, while resolution involves controlled apoptosis and clearance to prevent further mediator release.

Other names

cytokine release (process)cytokine secretion (process)DAMP release (process)HMGB1 release (specific DAMP example within the process)inflammasome-mediated cytokine release (e.g., IL-1 family)cytokine storm/cytokine release syndrome (pathologic form)

IL-6 pathway blockade to blunt downstream effects of elevated IL-6 during cytokine release syndrome; JAK-STAT inhibition to prevent transcriptional amplification of inflammatory cytokines following receptor engagement; COX inhibition to decrease prostaglandin-mediated inflammatory signaling arising from released arachidonic acid derivatives; IL-1 receptor blockade or inflammasome pathway inhibition to reduce maturation/release of IL-1 family cytokines; Inhibition of HMGB1 nuclear export/secretion (e.g., via XPO1 inhibition) to attenuate DAMP-driven TLR4 signaling and cytokine induction.