Department of Bio-Sciences, COMSATS University Islamabad, Islamabad 45550, Pakistan.
Atta-ur-Rahman School of Applied Biosciences (ASAB), National University of Sciences & Technology (NUST), Islamabad 44000, Pakistan.
Medicina (Kaunas). 2019 May 23;55(5):195. doi: 10.3390/medicina55050195.
: continues to emerge as a dangerous pathogen because of increasing resistance to a number of antibiotics. This paper provides a solution to emerging antibiotic resistance by introducing novel proteins as vaccine candidates against cholera. : genome versatility is a hurdle for developing a vaccine to combat diarrhoeal infection, so its core gene information was used to determine a potential vaccine candidate. Whole genome sequence data of more than 100 strains were used simultaneously to get core genome information. The VacSol pipeline based on reverse vaccinology was selected to address the problem of safe, cheap, temperature-stable, and effective vaccine candidates which can be used for vaccine development against . VacSol screens vaccine candidates using integrated, well-known, and robust algorithms/tools for proteome analysis. The proteomes of the pathogens were initially screened to predict homology using BLASTp. Proteomes that are non-homologous to humans are then subjected to a predictor for localization. Helicer predicts transmembrane helices for the protein. Proteins failing to comply with the set parameters were filtered at each step, and finally, 11 proteins were filtered as vaccine candidates. : This selected group of vaccine candidates consists of proteins from almost all structural parts of . Their blast results show that this filtered group includes flagellin A protein, a protein from the Zn transporter system, a lipocarrier outer membrane protein, a peptidoglycan-associated protein, a DNA-binding protein, a chemotaxis protein, a tRNA Pseuriudine synthase A, and two selected proteins, which were beta lactamases. The last two uncharacterized proteins possess 100% similarity to and , respectively. Tertiary structure and active site determination show a large number of pockets on each protein. : The most interesting finding of this study is that 10 proteins out of 11 filtered proteins are introduced as novel potential vaccine candidates. These novel vaccine candidates can result in the development of cost-effective and broad-spectrum vaccines which can be used in countries where cholera is a major contributor to diarrheal disease.
: 由于对许多抗生素的耐药性不断增加,它继续成为一种危险的病原体。本文通过引入新型蛋白质作为霍乱疫苗候选物,为应对新兴抗生素耐药性提供了一种解决方案。: 霍乱弧菌基因组的多功能性是开发针对腹泻感染疫苗的一个障碍,因此利用其核心基因信息来确定潜在的疫苗候选物。利用超过 100 株的全基因组序列数据同时获取核心基因组信息。选择基于反向疫苗学的 VacSol 管道来解决安全、廉价、稳定和有效的疫苗候选物的问题,这些候选物可用于开发针对霍乱弧菌的疫苗。 VacSol 使用综合、知名和强大的算法/工具筛选疫苗候选物,用于蛋白质组分析。首先使用 BLASTp 对病原体的蛋白质组进行同源性预测筛选。然后将与人类非同源的蛋白质进行定位预测。Helicer 预测蛋白质的跨膜螺旋。在每个步骤中,不符合设定参数的蛋白质都被过滤掉,最后筛选出 11 种蛋白质作为疫苗候选物。: 这组选定的疫苗候选物包含来自霍乱弧菌几乎所有结构部分的蛋白质。它们的 Blast 结果表明,这组过滤后的候选物包括鞭毛蛋白 A 蛋白、锌转运系统蛋白、脂载体外膜蛋白、肽聚糖相关蛋白、DNA 结合蛋白、趋化蛋白、假尿嘧啶合酶 A 和两个选定的蛋白质,分别为β内酰胺酶。最后两个未表征的蛋白质与 分别具有 100%的相似性。三级结构和活性位点的确定表明,每个蛋白质上都有大量的口袋。: 这项研究最有趣的发现是,从 11 个筛选出的蛋白质中,有 10 个被介绍为新型潜在的疫苗候选物。这些新型疫苗候选物可以开发出具有成本效益和广谱性的疫苗,可用于霍乱是腹泻病主要原因的国家。