Zika virus (ZIKV) is a mosquito-borne virus belonging to the Flaviviridae family and is responsible for an exanthematous disease and severe neurological manifestations, such as microcephaly and Guillain-Barré syndrome. ZIKV has a single strand positive-sense RNA genome that is translated into structural and non-structural (NS) proteins. Although it has become endemic in most parts of the tropical world, Zika still does not have a specific treatment. Thus, in this work we evaluate the cytotoxicity and antiviral activities of 14 hybrid compounds formed by 1H-1,2,3-triazole, naphthoquinone and phthalimide groups. Most compounds showed low cytotoxicity to epithelial cells, specially the 3b compound. After screening with all compounds, 4b was the most active against ZIKV in the post-infection test, obtaining a 50% inhibition concentration (IC50) of 146.0 µM and SI of 2.3. There were no significant results for the pre-treatment test. According to the molecular docking compound, 4b was suggested with significant binding affinity for the NS5 RdRp protein target, which was further corroborated by molecular dynamic simulation studies.
寨卡病毒(ZIKV)是一种蚊媒病毒,属于黄病毒科,负责引发皮疹性疾病和严重的神经系统症状,如小头畸形和吉兰-巴雷综合征。ZIKV具有单链正义RNA基因组,可翻译成结构和非结构(NS)蛋白质。尽管在热带世界的大部分地区已成为地方性疾病,但寨卡病毒仍没有特定的治疗方法。因此,在这项研究中,我们评估了由1H-1,2,3-三唑、萘醌和邻苯二甲酰亚胺基团组成的14种混合化合物的细胞毒性和抗病毒活性。大多数化合物对上皮细胞显示出较低的细胞毒性,特别是3b化合物。在对所有化合物进行筛选后,4b在后感染测试中对ZIKV表现出最强活性,获得了146.0 µM的50%抑制浓度(IC50)和2.3的SI。预处理测试没有显著结果。根据分子对接化合物,4b被建议具有与NS5 RdRp蛋白靶点的显著结合亲和力,这一结果进一步得到了分子动力学模拟研究的证实。