國家衛生研究院 NHRI:Item 3990099045/16248
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    题名: Endosomes serve as signaling platforms for RIG-I ubiquitination and activation
    作者: Chen, KR;Yang, CY;Shu, SG;Lo, YC;Lee, KW;Wang, LC;Chen, JB;Shih, MC;Chang, HC;Hsiao, YJ;Wu, CL;Tan, TH;Ling, P
    贡献者: Immunology Research Center
    摘要: RIG-I-like receptors (RLRs) are cytosolic RNA sensors critical for antiviral immunity. RLR activation is regulated by polyubiquitination and oligomerization following RNA binding. Yet, little is known about how RLRs exploit subcellular organelles to facilitate their posttranslational modifications and activation. Endosomal adaptor TAPE regulates the endosomal TLR and cytosolic RLR pathways. The potential interplay between RIG-I signaling and endosomes has been explored. Here, we report that endosomes act as platforms for facilitating RIG-I polyubiquitination and complex formation. RIG-I was translocated onto endosomes to form signaling complexes upon activation. Ablation of endosomes impaired RIG-I signaling to type I IFN activation. TAPE mediates the interaction and polyubiquitination of RIG-I and TRIM25. TAPE-deficient myeloid cells were defective in type I IFN activation upon RNA ligand and virus challenges. Myeloid TAPE deficiency increased the susceptibility to RNA virus infection in vivo. Our work reveals endosomes as signaling platforms for RIG-I activation and antiviral immunity.
    日期: 2024-11-08
    關聯: Science Advances. 2024 Nov 08;10(45):Article number eadq0660.
    Link to: http://dx.doi.org/10.1126/sciadv.adq0660
    JIF/Ranking 2023: http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=NHRI&SrcApp=NHRI_IR&KeyISSN=2375-2548&DestApp=IC2JCR
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