Pro-inflammatory cytokine production via Nuclear Factor-kappa B (NF-κB) and Mitogen-Activated Protein Kinase (MAPK) signaling

Pro-inflammatory cytokine production via NF-κB and MAPK signaling represents a complex intracellular signaling network that serves as a central regulator of the inflammatory response. This process is initiated by various stimuli, including pathogen-associated molecular patterns (PAMPs) and pro-inflammatory cytokines like TNF-α and IL-1β, which activate the Nuclear Factor-kappa B (NF-κB) and Mitogen-Activated Protein Kinase (MAPK) pathways [1][2]. The NF-κB pathway typically involves the phosphorylation and subsequent proteasomal degradation of IκB proteins, allowing the p50/p65 transcription factor complex to translocate to the nucleus and induce gene expression [3]. Concurrently, the MAPK cascades—comprising ERK, JNK, and p38—phosphorylate various downstream targets and transcription factors that further amplify the production of cytokines such as IL-6 and TNF-α [4]. Dysregulation of these pathways is strongly associated with chronic inflammatory diseases, autoimmune disorders, and certain malignancies where they promote pathological cell survival and tissue damage [5]. Therapeutic strategies often target specific components within these cascades, such as IKK or MEK, to dampen the inflammatory output, although such interventions must balance efficacy with the risk of systemic immunosuppression [6].

Other names

NF-kappaB signaling pathwayMAPK signaling pathwayInflammatory signaling cascadePro-inflammatory gene expression

Inhibition of IκB kinase (IKK) complex, inhibition of mitogen-activated protein kinase kinases (MEK/MKK), inhibition of proteasomal degradation of IκB, and antagonism of upstream cytokine receptors.