STING palmitoylation as a therapeutic target.

STING palmitoylation as a therapeutic target.
Cell Mol Immunol. 2019 Feb 22;:
Authors: Hansen AL, Mukai K, Schopfer FJ, Taguchi T, Holm CK
Abstract
Gain-of-function mutations in the STING-encoding gene TMEM173 are central to the pathology of the autoinflammatory disorder STING-associated vasculopathy with onset in infancy (SAVI). Furthermore, excessive activity of the STING signaling pathway is associated with autoinflammatory diseases, including systemic lupus erythematosus and Aicardi-Goutières syndrome (AGS). Two independent studies recently identified pharmacological inhibitors of STING. Strikingly, both types of compounds are reactive nitro-containing electrophiles that target STING palmitoylation, a posttranslational modification necessary for STING signaling. As a consequence, the activation of downstream signaling molecules and the induction of type I interferons were inhibited. The compounds were effective at ameliorating inflammation in a mouse model of AGS and in blocking the production of type I interferons in primary fibroblasts from SAVI patients. This mini-review focuses on the roles of palmitoylation in STING activation and signaling and as a pharmaceutical target for drug development.
PMID: 30796349 [PubMed - as supplied by publisher]

Source: Cellular and Molecular Immunology - February 22, 2019 Category: Molecular Biology Authors: Hansen AL, Mukai K, Schopfer FJ, Taguchi T, Holm CK Tags: Cell Mol Immunol Source Type: research