Cellular RNA interacts with MAVS to promote antiviral signaling

• 成果类型: Article
• 署名作者: Gokhale, Nandan S.; Sam, Russell K.; Somfleth, Kim; Thompson, Matthew G.; Marciniak, Daphnee M.; Smith, Julian R.; Genoyer, Emmanuelle; Eggenberger, Julie; Chu, Lan H.; Park, Moonhee; Dvorkin, Steve; Oberst, Andrew; Horner, Stacy M.; Ong, Shao-En; Gale Jr, Michael; Savan, Ram
• 署名单位: University of Washington; University of Washington Seattle; Duke University; University of Washington; University of Washington Seattle; Duke University; University of Washington; University of Washington Seattle
• 刊物名称: SCIENCE
• ISSN/ISSBN: 0036-8927
• DOI: 10.1126/science.adl0429
• 发表日期: 2024-12-20
• 关键词: rig-i; binding proteins; adapter protein; innate immunity; identification; platform; roles; purification; RECOGNITION; activation

摘要

Antiviral signaling downstream of RIG-I-like receptors (RLRs) proceeds through a multi-protein complex organized around the adaptor protein mitochondrial antiviral signaling protein (MAVS). Protein complex function can be modulated by RNA molecules that provide allosteric regulation or act as molecular guides or scaffolds. We hypothesized that RNA plays a role in organizing MAVS signaling platforms. We found that MAVS, through its central intrinsically disordered domain, directly interacted with the 3 ' untranslated regions of cellular messenger RNAs. Elimination of RNA by ribonuclease treatment disrupted the MAVS signalosome, including RNA-modulated MAVS interactors that regulate RLR signaling and viral restriction, and inhibited phosphorylation of transcription factors that induce interferons. This work uncovered a function for cellular RNA in promoting signaling through MAVS and highlights generalizable principles of RNA regulatory control of immune signaling complexes.