Cloning of an orange-spotted grouper (Epinephelus coioides) Mx cDNA and characterisation of its expression in response to nodavirus

Young Mao Chen, Yong Lin Su, John Han You Lin, Huey Lang Yang, Tzong Yueh Chen

研究成果: Article

67 引文 斯高帕斯(Scopus)


Molecular cloning and nucleotide sequencing of cDNA encoding an orange-spotted grouper (Epinephelus coioides) homolog of Mx ("OsgMx") was conducted and its possible role in fish immunity was analysed. Similar to mammalian Mx, the OsgMx are members of a family of interferon-inducible genes that are expressed by cells in response to nodavirus and iridovirus naturally-infected. Expression of OsgMx mRNA was noticeably upregulated in all tissues by nodavirus naturally-infected grouper. The transcription of OsgMx gene increased 6 h after intramuscular injection of nodavirus experimentally- infected fish and peaked at 72 h in their brains. Analysis of the 5′-flanking sequence of the gene shows that as in pufferfish and zebrafish, the OsgMx promoter contains two potential interferon-stimulated response element (ISRE) responsible for the induction of interferon-inducer polyinosinic-polycytidylic acid (Poly[I:C]). Transient transfection of grouper cells in gfp-reporter gene assays shows that the activation of the grouper Mx promoter fragment by Poly[I:C] is sufficient to allow the expression of green fluorescent protein (GFP). These results may provide a possible regulated pathway against nodavirus.

頁(從 - 到)58-71
期刊Fish and Shellfish Immunology
出版狀態Published - 2006 一月


All Science Journal Classification (ASJC) codes

  • Environmental Chemistry
  • Aquatic Science