Department of Microbiology and Immunology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.
Department of Tropical Pathology, Faculty of Tropical Medicine, Mahidol University, Bangkok, Thailand.
Microbiologyopen. 2019 Sep;8(9):e00831. doi: 10.1002/mbo3.831. Epub 2019 Mar 7.
Dengue virus (DENV) causes dengue fever, a self-limiting disease that could be fatal due to serious complications. No specific treatment is currently available and the preventative vaccine is only partially protective. To develop a potential drug target for dengue fever, we need to understand its biology and pathogenesis thoroughly. N-myristoyltransferase (NMT) is an N-terminal protein lipidation enzyme that catalyzes the covalent cotranslational attachment of fatty acids to the amino-terminal glycine residue of a number of proteins, leading to the modulation of various signaling molecules. In this study, we investigated the interaction of dengue viral proteins with host NMT and its subsequent effect on DENV. Our bioinformatics, molecular docking, and far-western blotting analyses demonstrated the interaction of viral envelope protein (E) with NMT. The gene expression of NMT was strongly elevated in a dependent manner during the viral replication phase in dendritic cells. Moreover, NMT gene silencing significantly inhibited DENV replication in dendritic cells. Further studies investigating the target cell types of other host factors are suggested.
登革热病毒(DENV)引起登革热,这是一种自限性疾病,但由于严重并发症,可能致命。目前尚无特效治疗方法,预防疫苗也只有部分保护作用。为了开发登革热的潜在药物靶点,我们需要深入了解其生物学和发病机制。N-豆蔻酰转移酶(NMT)是一种 N 端蛋白脂化酶,可催化脂肪酸与许多蛋白质的氨基末端甘氨酸残基的共翻译共价连接,从而调节各种信号分子。在这项研究中,我们研究了登革热病毒蛋白与宿主 NMT 的相互作用及其对 DENV 的后续影响。我们的生物信息学、分子对接和远 Western 印迹分析表明,病毒包膜蛋白(E)与 NMT 相互作用。在树突状细胞中的病毒复制阶段,NMT 的基因表达强烈地依赖于病毒而升高。此外,NMT 基因沉默显著抑制了树突状细胞中的 DENV 复制。建议进一步研究其他宿主因子的靶细胞类型。