Tumor necrosis factor alpha-induced protein 3 (TNFAIP3)

Tumor necrosis factor alpha-induced protein 3 (TNFAIP3/A20) is a multifunctional zinc finger protein and ubiquitin-editing enzyme that is rapidly induced by TNF and serves as a crucial negative regulator of the NF-kappa B signaling pathway, moderating inflammatory and immune responses and protecting against apoptosis. A20's activity involves both removal (deubiquitination) and addition (ubiquitination) of ubiquitin chains on key signaling proteins, thereby terminating inflammatory signaling. Genetic variants in TNFAIP3 are associated with increased risk for autoimmune diseases like rheumatoid arthritis, and its deficiency or dysregulation leads to heightened inflammatory responses and decreased immune homeostasis. In diabetes, it has a protective role for pancreatic beta cells, and in cancer, its expression modulates tumor immunity and cell survival pathways. As a central mediator in immune signaling, TNFAIP3/A20 represents a promising therapeutic target, though its complex regulation and wide-ranging effects require careful consideration for intervention.

Other names

A20TNF alpha-induced protein 3Tumor necrosis factor alpha-induced protein 3

Drugs targeting TNFAIP3/A20 would aim to modulate its ubiquitin-editing activity to either enhance or suppress NF-kappa B mediated inflammation and cell death, thus affecting immune and apoptotic processes