Endoplasmic reticulum stress and NF-kappaB pathway proteins

The term "Endoplasmic reticulum stress/NF-kappaB pathway proteins" does not refer to a single molecular target but rather describes two interconnected cellular pathways involving multiple distinct protein families. The endoplasmic reticulum (ER) stress response is mediated by the unfolded protein response (UPR)—a network of sensors including inositol-requiring enzyme 1 alpha (IRE1α), PKR-like ER kinase (PERK), and activating transcription factor 6 (ATF6)—which detect misfolded or unfolded proteins in the ER lumen and initiate adaptive or apoptotic responses[7][2][3]. These sensors regulate downstream effectors such as X-box binding protein 1 (XBP1), ATF4, C/EBP homologous protein (CHOP), and others that modulate cell survival or death depending on the severity of the stress[7][2][3]. The NF-kappaB pathway, meanwhile, is a central regulator of inflammation and immune responses. There is documented crosstalk between UPR/ER-stress signaling branches—particularly IRE1α—and NF-kappaB activation; for example, IRE1 can activate JNK via TRAF2 recruitment which can influence inflammatory gene expression[7][2]. Both pathways are implicated in diseases such as cancer, inflammation-related disorders, neurodegeneration, cardiovascular disease, and more[3][10]. Because this entry refers to an entire set of pathways rather than a specific molecule or receptor/protein target suitable for drug development profiling—and because it combines two broad systems ("ER stress" with "NF-kappaB")—it should be flagged as incorrect for structured target annotation purposes. > "The UPR is regulated by three main proteins: inositol-requiring enzyme 1α (IRE1α), PKR-like ER kinase (PERK) and activating transcription factor 6 (ATF6)... Under ER stress conditions BIP dissociates... This process activates IRE1α and PERK..." [7] > "A crosstalk between IRE1α and TNF signaling has been documented previously... It is conceivable that pro-apoptotic UPR employs at least in part the same pathways as TNF signaling..." [6] In summary: this entry does not correspond to a single canonical therapeutic target but instead references multiple related but distinct molecular entities within complex cellular networks.

Other names

ER stress pathway proteinsUPR pathway proteinsunfolded protein response componentsNF-κB signaling proteins

Inhibition of IRE1α RNase activity to reduce pro-inflammatory cytokine secretion and cell death[6]