Touhidinia Maryam, Sefid Fatemeh, Bidakhavidi Mozhgan
Department of Biology, Faculty of Science, Yazd University, Yazd, Iran.
Department of Medical Genetics, Shahid Sadoughi University of Medical Science, Yazd, Iran.
Int J Pept Res Ther. 2021;27(4):2417-2437. doi: 10.1007/s10989-021-10262-4. Epub 2021 Aug 28.
is one of the most successful pathogens causing nosocomial infections and has significantly multidrug-resistant. So far, there are no certain treatments to protect against infection with , therefore an effective vaccine needed. The purpose of this study was to predict antigenic epitopes of protein for designing the vaccine using immunoinformatics analysis. protein is one of the most important factors in the resistance against the antibiotic . In this study, T and B-cell epitopes of protein were predicted and screened based on the antigenicity, toxicity, allergenicity features. The epitopes were linked by suitable linkers. Four different adjuvants were attached to the vaccine constructs which among them, vaccine construct 3 was chosen to predict the secondary and the 3D structure of the vaccine. The refinement process was performed to improve the quality of the 3D model structure; the validation process is performed using the Ramachandran plot and ProSA z-score. The designed vaccine's binding affinity to six various HLA molecules and TLR 2 and TLR4 were evaluated by molecular docking. Finally, in silico gene cloning was performed in the pET28a (+) vector. The findings suggest that the vaccine may be a promising vaccine to prevent infection.
是引起医院感染最成功的病原体之一,且具有显著的多重耐药性。到目前为止,尚无针对感染的确定性治疗方法,因此需要一种有效的疫苗。本研究的目的是利用免疫信息学分析预测蛋白质的抗原表位,以设计疫苗。蛋白质是对抗抗生素的最重要因素之一。在本研究中,基于抗原性、毒性、致敏性特征对蛋白质的T细胞和B细胞表位进行了预测和筛选。表位通过合适的连接子连接。四种不同的佐剂被连接到疫苗构建体上,其中选择疫苗构建体3来预测疫苗的二级结构和三维结构。进行了优化过程以提高三维模型结构的质量;使用拉氏图和ProSA z评分进行验证过程。通过分子对接评估设计疫苗与六种不同HLA分子以及TLR 2和TLR4的结合亲和力。最后,在pET28a(+)载体中进行了电子克隆。研究结果表明,该疫苗可能是预防感染的一种有前景的疫苗。