Kant Ravi, Khan Mohd Shoaib, Chopra Madhu, Saluja Daman
Medical Biotechnology Laboratory, Dr. B. R. Ambedkar Center for Biomedical Research, University of Delhi, Delhi, India.
Delhi School of Public Health, Institute of Eminence (IoE), University of Delhi, Delhi, India.
Front Mol Biosci. 2024 Aug 13;11:1442158. doi: 10.3389/fmolb.2024.1442158. eCollection 2024.
is the causative agent of the sexually transmitted disease gonorrhea. The increasing prevalence of this disease worldwide, the rise of antibiotic-resistant strains, and the difficulties in treatment necessitate the development of a vaccine, highlighting the significance of preventative measures to control and eradicate the infection. Currently, there is no widely available vaccine, partly due to the bacterium's ability to evade natural immunity and the limited research investment in gonorrhea compared to other diseases. To identify distinct vaccine candidates, we chose to focus on the uncharacterized, hypothetical proteins (HPs) as our initial approach. Using the method, we first carried out a comprehensive assessment of hypothetical proteins of encompassing assessments of physicochemical properties, cellular localization, secretary pathways, transmembrane regions, antigenicity, toxicity, and prediction of B-cell and T-cell epitopes, among other analyses. Detailed analysis of all HPs resulted in the functional annotation of twenty proteins with a great degree of confidence. Further, using the immuno-informatics approach, the prediction pipeline identified one CD8 restricted T-cell epitope, seven linear B-cell epitopes, and seven conformational B-cell epitopes as putative epitope-based peptide vaccine candidates which certainly require further validation in laboratory settings. The study accentuates the promise of functional annotation and immuno-informatics in the systematic design of epitope-based peptide vaccines targeting .
是性传播疾病淋病的病原体。该疾病在全球范围内的患病率不断上升,耐药菌株的出现以及治疗困难促使人们开发疫苗,凸显了预防措施对于控制和根除感染的重要性。目前,尚无广泛可用的疫苗,部分原因是该细菌能够逃避天然免疫,且与其他疾病相比,对淋病的研究投入有限。为了确定不同的疫苗候选物,我们选择将重点放在未表征的假设蛋白(HPs)上作为我们的初始方法。使用该方法,我们首先对的假设蛋白进行了全面评估,包括对物理化学性质、细胞定位、分泌途径、跨膜区域、抗原性、毒性以及B细胞和T细胞表位预测等方面的评估。对所有HPs的详细分析得出了二十种具有高度可信度的蛋白质的功能注释。此外,使用免疫信息学方法,预测流程确定了一个CD8限制性T细胞表位、七个线性B细胞表位和七个构象性B细胞表位作为基于表位的肽疫苗候选物,当然这些候选物肯定需要在实验室环境中进一步验证。该研究强调了功能注释和免疫信息学在针对系统性设计基于表位的肽疫苗方面的前景。