維甲酸誘導基因-I
外觀
維甲酸誘導基因-I[5](RIG-I,retinoic acid-inducible gene I)是脊椎動物細胞質中的一種模式識別受體(PRR),結構上屬於DExD/H-box類RNA解旋酶[6][7][8],在人類基因組中由DDX58基因編碼[9],其N端有兩個CARD結構域,C端則可與RNA結合,為先天免疫反應中的重要蛋白[6][7]。
RIG-I平時處於滅活狀態,在細胞被西尼羅河病毒、黃熱病毒、日本腦炎病毒、甲型流感病毒、仙台病毒與冠狀病毒等RNA病毒感染後[6][10],RIG-I可與病毒的雙股RNA(dsRNA)結合而被活化,接着即可以CARD結構域和線粒體外膜上的線粒體抗病毒信號蛋白(MAVS)結合[7],啟動第一型干擾素(IFN I)途徑的免疫反應[6],後者可阻止病毒擴散、造成發炎反應以及協助活化後天免疫[11]。除識別病毒RNA外,在不同癌細胞中RIG-I還能啟動其他反應,包括促進或抑制腫瘤增殖(因腫瘤類型而異)、活化B細胞、影響細胞分化等[12]。有些無脊椎動物(牡蠣)也具有和RIG-I與MAVS同源的蛋白,且可能也有抗病毒的免疫功能[13]
參考文獻
[編輯]- ^ 1.0 1.1 1.2 GRCh38: Ensembl release 89: ENSG00000107201 - Ensembl, May 2017
- ^ 2.0 2.1 2.2 GRCm38: Ensembl release 89: ENSMUSG00000040296 - Ensembl, May 2017
- ^ Human PubMed Reference:. National Center for Biotechnology Information, U.S. National Library of Medicine.
- ^ Mouse PubMed Reference:. National Center for Biotechnology Information, U.S. National Library of Medicine.
- ^ 存档副本. [2021-07-06]. (原始內容存檔於2021-07-09).
- ^ 6.0 6.1 6.2 6.3 Kell AM, Gale M. RIG-I in RNA virus recognition. Virology. May 2015,. 479-480: 110–21. PMC 4424084 . PMID 25749629. doi:10.1016/j.virol.2015.02.017.
- ^ 7.0 7.1 7.2 Brisse M, Ly H. Comparative Structure and Function Analysis of the RIG-I-Like Receptors: RIG-I and MDA5. Frontiers in Immunology. 2019, 10: 1586. PMC 6652118 . PMID 31379819. doi:10.3389/fimmu.2019.01586 (英語).
- ^ Xu XX, Wan H, Nie L, Shao T, Xiang LX, Shao JZ. RIG-I: a multifunctional protein beyond a pattern recognition receptor. Protein & Cell. March 2018, 9 (3): 246–253. PMC 5829270 . PMID 28593618. doi:10.1007/s13238-017-0431-5.
- ^ DDX58 DExD/H-box helicase 58 [Homo sapiens (human)] - Gene - NCBI. www.ncbi.nlm.nih.gov. [2020-02-29]. (原始內容存檔於2021-04-24).
- ^ Solis M, Nakhaei P, Jalalirad M, Lacoste J, Douville R, Arguello M, et al. RIG-I-mediated antiviral signaling is inhibited in HIV-1 infection by a protease-mediated sequestration of RIG-I. Journal of Virology. February 2011, 85 (3): 1224–36. PMC 3020501 . PMID 21084468. doi:10.1128/JVI.01635-10.
- ^ Ivashkiv LB, Donlin LT. Regulation of type I interferon responses. Nature Reviews. Immunology. January 2014, 14 (1): 36–49. PMC 4084561 . PMID 24362405. doi:10.1038/nri3581.
- ^ Xu XX, Wan H, Nie L, Shao T, Xiang LX, Shao JZ. RIG-I: a multifunctional protein beyond a pattern recognition receptor.. Protein Cell. 2018, 9 (3): 246–253. PMC 5829270 . PMID 28593618. doi:10.1007/s13238-017-0431-5.
- ^ Huang B, Zhang L, Du Y, Xu F, Li L, Zhang G. Characterization of the Mollusc RIG-I/MAVS Pathway Reveals an Archaic Antiviral Signalling Framework in Invertebrates.. Sci Rep. 2017, 7 (1): 8217. PMC 5557890 . PMID 28811654. doi:10.1038/s41598-017-08566-x.