Tumor necrosis factor receptor 1 (TNFR1) (TNFR1)

Tumor necrosis factor receptor 1 (TNFR1) is a ubiquitous membrane protein that serves as a primary mediator for the biological effects of tumor necrosis factor (TNF). Historically identified in early binding studies as high-affinity cell surface binding sites on various cell lines, including HeLa cells, TNFR1 is characterized by its ability to trigger both pro-inflammatory gene expression and programmed cell death (apoptosis). Upon binding to TNF, the receptor recruits intracellular adapter proteins to its death domain, initiating signaling cascades such as the NF-kappaB and MAPK pathways. In disease states, overactivation of TNFR1 signaling is a hallmark of chronic inflammatory conditions like rheumatoid arthritis and Crohn's disease, making it a critical therapeutic target. Modern biologics, including monoclonal antibodies and soluble receptor decoys, effectively manage these diseases by preventing the interaction between TNF and its high-affinity receptors.

Other names

Tumor necrosis factor receptor superfamily member 1ATNFRSF1ACD120ap55p60TNF-R1High-affinity cell surface binding sites for tumor necrosis factor

Inhibition of tumor necrosis factor (TNF) binding to its receptors, thereby neutralizing its pro-inflammatory and apoptotic signaling effects.