Saha Deeya, Kundu Sudip
Department of Biophysics, Molecular Biology and Bioinformatics, Faculty of Science, University of Calcutta, Kolkata, India.
Front Microbiol. 2021 Feb 18;12:613067. doi: 10.3389/fmicb.2021.613067. eCollection 2021.
is a leading cause of pneumonia and septicemia across the world. The rapid emergence of multidrug-resistant strains necessitates the discovery of effective drugs against this notorious pathogen. However, there is a dearth of knowledge on the mechanisms by which this deadly pathogen subverts host cellular machinery. To fill this knowledge gap, our study attempts to identify the potential mechanisms of host cell subversion by building a -human interactome based on rigorous computational methodology. The putative host targets inferred from the predicted interactome were found to be functionally enriched in the host's immune surveillance system and allied functions like apoptosis, hypoxia, etc. A multifunctionality-based scoring system revealed P53 as the most multifunctional protein among host targets accompanied by HIF1A and STAT1. Moreover, mining of host protein-protein interaction (PPI) network revealed that host targets interact among themselves to form a network (TTPPI), where P53 and CDC5L occupy a central position. The TTPPI is composed of several inter complex interactions which indicate that might disrupt functional coordination between these protein complexes through targeting of P53 and CDC5L. Furthermore, we identified four pivotal targeted transcription factors (TTFs) that are part of TTPPI and are involved in generating host's transcriptional response to mediated sepsis. In a nutshell, our study identifies some of the pivotal molecular targets of which primarily correlate to the physiological response of host during mediated sepsis.
是全球肺炎和败血症的主要病因。多重耐药菌株的迅速出现使得有必要发现针对这种臭名昭著病原体的有效药物。然而,对于这种致命病原体颠覆宿主细胞机制的方式,我们知之甚少。为了填补这一知识空白,我们的研究试图通过基于严格计算方法构建人相互作用组来确定宿主细胞被颠覆的潜在机制。从预测的相互作用组推断出的假定宿主靶点在宿主的免疫监视系统以及凋亡、缺氧等相关功能中功能富集。基于多功能性的评分系统显示,P53是宿主靶点中最具多功能性的蛋白质,其次是HIF1A和STAT1。此外,对宿主蛋白质-蛋白质相互作用(PPI)网络的挖掘表明,宿主靶点相互作用形成一个网络(TTPPI),其中P53和CDC5L占据中心位置。TTPPI由几个复合体间的相互作用组成,这表明可能通过靶向P53和CDC5L破坏这些蛋白质复合体之间的功能协调。此外,我们确定了四个关键的靶向转录因子(TTF),它们是TTPPI的一部分,参与产生宿主对介导的败血症的转录反应。简而言之,我们的研究确定了的一些关键分子靶点,这些靶点主要与宿主在介导的败血症期间的生理反应相关。