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An in silico approach to design a potential drug for Haemophilia A 设计一种潜在的血友病a药物的计算机方法
Pub Date : 2019-07-07 DOI: 10.1504/IJCBDD.2019.10022529
S. Munjal, Gaurav Jaisawal, N. Goel, U. P. Singh, Ajay Vishwakrma, Abhinav K. Srivastava
Haemophilia A has been known as a disease since the late 20th century but still no cure has been developed for it. Temporary treatments include new factor replacement therapies delaying the frequency of blood transfusions. In this study, a new prospective drug molecule was designed in silico. Thirteen target proteins were identified from protein databases and their structures observed. Cavities in the protein were determined using Swiss PDB Viewer. Twelve ligands and its isomers were prepared through Molinspiration. Docking between the ligands and target proteins was performed using Molegro Virtual Docker. Docking studies analysed the MolDock and Hydrogen bond score. The most appropriate values were obtained with protein 1SDD and ligand 1. Therefore, Ligand 1 can be proceeded with more studies and developed into a potential drug for Haemophilia A.
自20世纪末以来,A型血友病就被认为是一种疾病,但迄今为止还没有找到治疗方法。临时治疗包括新的因子替代疗法,可以延迟输血的频率。在本研究中,我们设计了一种新的有前景的药物分子。从蛋白数据库中鉴定出13种靶蛋白,并对其结构进行了观察。用Swiss PDB Viewer测定蛋白中的空腔。用Molinspiration法制备了12个配体及其异构体。配体与靶蛋白之间的对接使用Molegro Virtual Docker进行。对接研究分析了MolDock和氢键得分。以蛋白1SDD和配体1为最合适的值。因此,配体1可以进行更多的研究,并发展成为一种潜在的治疗a型血友病的药物。
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引用次数: 0
Computational prediction of binding of monocrotophos and its analogues on human acetylcholinesterase, oxyhaemoglobin and IgE antibody 单色磷及其类似物与人乙酰胆碱酯酶、氧合血红蛋白和IgE抗体结合的计算预测
Pub Date : 2019-07-07 DOI: 10.1504/IJCBDD.2019.10022512
S. Nathiya, M. Durga, T. Devasena
In this study, a computational approach has been employed to study the interactions of human acetylcholinesterase (AChE), human oxyhaemoglobin and human high-affinity IgE receptor with an organophosphate pesticide, and the comparative binding affinity, interacting residues of protein, H-bond distance and fitness score have been evaluated using GOLD software. Monocrotophos and its analogues bind to AChE with the highest fitness score. The analogue RPR-II binds to the receptor with a highest fitness score: 42.17 when compared with RPR-V (fitness score: 40.62) and monocrotophos (fitness score: 35.25). Monocrotophos, RPR-II and RPR-V interact with oxyhaemoglobin with a fitness score of about 17.68, 20.16 and 24.62, respectively. Monocrotophos, RPR-II and RPR-V interact with human high-affinity IgE receptor with a fitness score of about 18.29, 19.05 and 22.57, respectively. The above-mentioned results indicate that RPR series are highly toxic than monocrotophos, hence there is a need for complete evaluation of the toxicological effect of new pesticides.
本研究采用计算方法研究了人乙酰胆碱酯酶(AChE)、人氧合血红蛋白和人高亲和力IgE受体与有机磷农药的相互作用,并利用GOLD软件评估了它们的比较结合亲和力、相互作用蛋白残基、氢键距离和适合度评分。单效磷及其类似物与乙酰胆碱结合的适合度评分最高。类似物rna - ii与受体结合的适应度评分最高,为42.17,高于rna - v(适应度评分为40.62)和单色磷(适应度评分为35.25)。单核色素、RPR-II和RPR-V与氧合血红蛋白相互作用的适应度评分分别为17.68、20.16和24.62。与人高亲和力IgE受体相互作用的单效磷、rna - ii和rna - v的适应度评分分别为18.29、19.05和22.57。上述结果表明,RPR系列农药的毒理学效应比单效磷高,因此有必要对新农药的毒理学效应进行完整的评价。
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引用次数: 0
Deep convolutional neural network for laser forward scattering image classification in microbial source tracking 微生物源跟踪中激光前向散射图像分类的深度卷积神经网络
Pub Date : 2019-07-07 DOI: 10.1504/IJCBDD.2019.10022511
Bin Chen
The colony-based laser scatter imaging for microbial source tracking heavily relies on the power of optical scattering image classification. While carefully handcraft feature extraction achieved excellent results for the colonies with certain sizes for optimal classification results, the classification accuracy drops quickly for smaller or larger colonies outside of the colony size range. In this study, a deep convolutional neural network was implemented for laser scattering image feature extraction and classification. The results show that the deep learning classification method clearly outperforms the traditional clustering methods with high accuracy and consistency for host species with a wide range of colony sizes. It also provides comparable accuracy for the colonies with the optimal sizes.
基于菌落的激光散射成像微生物源跟踪在很大程度上依赖于光散射图像分类的能力。经过精心的手工特征提取,对于一定大小的菌落,可以获得很好的分类效果,但对于超出菌落大小范围的较大或较小的菌落,分类精度会迅速下降。本研究采用深度卷积神经网络对激光散射图像进行特征提取和分类。结果表明,深度学习分类方法在大范围菌落大小的宿主物种中具有较高的准确率和一致性,明显优于传统的聚类方法。它还为具有最佳大小的菌落提供了相当的准确性。
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引用次数: 0
Improving the nerve regeneration ability by inhibiting the orchestral activity of the myelin associated repair inhibitors: an in silico approach 通过抑制髓磷脂相关修复抑制剂的管弦乐活性来改善神经再生能力:一种计算机方法
Pub Date : 2019-07-07 DOI: 10.1504/IJCBDD.2019.10022510
Sumaira Kanwal, S. Perveen
Nerve injuries plays a significant role in terms of individual's life style as it can be treatable or vice versa in context of the origin of the nerve. Unluckily, the repairing ability of the central nervous system is very restricted because of reduced intrinsic growth capacity, which is much feasible in PNS. These axonal growth inhibitory proteins are mediated via activation of Rho. In the present study, a hybrid approach of comparative modelling and molecular docking followed by inhibitor identification and structure modelling was employed. Our analysis showed that the two important drugs which are widely used have the potential to block the Rho-Rock pathways. Here, we report inhibitors which showed binding affinity for the three most important axonal regeneration inhibitors. Three step approaches can be used to defeat the axonal neuropathies that especially in the CMT disease. However further studies are required to find the applications of these drugs.
神经损伤在个体的生活方式中起着重要的作用,因为它可以治疗,反之亦然,在神经起源的背景下。不幸的是,中枢神经系统的修复能力由于内在生长能力的降低而受到很大的限制,这在PNS中是非常可行的。这些轴突生长抑制蛋白是通过激活Rho介导的。在本研究中,采用比较建模和分子对接的混合方法,然后进行抑制剂鉴定和结构建模。我们的分析表明,这两种被广泛使用的重要药物具有阻断Rho-Rock通路的潜力。在这里,我们报告的抑制剂显示结合亲和力的三个最重要的轴突再生抑制剂。三步法可用于击败轴索神经病变,特别是在CMT疾病。然而,需要进一步的研究来发现这些药物的应用。
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引用次数: 0
Human caveolin-1 a potent inhibitor for prostate cancer therapy: a computational approach 人小窝蛋白-1:前列腺癌治疗的有效抑制剂:计算方法
Pub Date : 2019-07-07 DOI: 10.20944/PREPRINTS201610.0016.V1
Uzma Khanam, B. K. Malik, P. Mathur, B. Rathi
Caveolin-1 (Cav-1) is 22 kDa caveolae protein, acts as a scaffold within caveolar membranes, interacts with Gα-protein and thereby regulates their activity. Earlier studies reported elevated caveolin-1 levels in the serum of prostate cancer patients. Secreted Cav-1 promotes angiogenesis, cell proliferation and anti-apoptotic activities in prostate cancer patients. This study was designed to explore Cav-1 as a target for prostate cancer therapy using computational approach. Molecular docking, structural base molecular modelling and molecular dynamics simulations were performed to investigate Cav-1 inhibitors. A predictive model was used for virtual screening against ZINC database of biogenic compounds. Stability of the active site residues of Cav-1 was estimated by IFD and 100 ns long molecular dynamic simulations. The reported compounds showed significant binding and thus can be considered potent therapeutic inhibitors of Cav-1. Thus, further investigative studies on the biochemical interactions of Cav-1 would provide a valuable insight into its probable therapeutic applications.
Caveolin-1 (Cav-1)是一种22 kDa的小泡蛋白,在小泡膜内起支架作用,与g α-蛋白相互作用,从而调节其活性。早期研究报道前列腺癌患者血清中小窝蛋白-1水平升高。前列腺癌患者分泌的Cav-1促进血管生成、细胞增殖和抗凋亡活性。本研究旨在利用计算方法探索Cav-1作为前列腺癌治疗的靶点。通过分子对接、结构碱分子模拟和分子动力学模拟等方法对Cav-1抑制剂进行研究。利用预测模型对含锌生物源化合物数据库进行虚拟筛选。利用IFD和100ns长的分子动力学模拟对Cav-1活性位点残基的稳定性进行了评价。所报道的化合物显示出显著的结合,因此可以认为是Cav-1的有效治疗抑制剂。因此,对Cav-1的生化相互作用的进一步调查研究将为其可能的治疗应用提供有价值的见解。
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引用次数: 0
De novo drug design, pharmacophore search and molecular docking for inhibitors to treat TB and HIV co-infection 新药物设计,药效团搜索和抑制剂分子对接治疗结核和艾滋病合并感染
Pub Date : 2019-07-07 DOI: 10.1504/IJCBDD.2019.10022530
Satheeshkumar Sellamuthu, Ashok Kumar, S. Singh
Novel molecules were designed as possible inhibitors of ATP synthase through de novo drug design, but were not drug-like molecules. Hence, ZINC database was searched for drug-like molecules from the common pharmacophore of the designed molecules. A total of 472 hits were obtained, among them, ZINC39552534, ZINC39371747, and ZINC38959526 produced better docking than the standard drug Bedaquiline. The vulnerability of TB and HIV co-infection has necessitated the search for inhibitors effective against both the diseases. Hence, the hits obtained were further screened for possible interaction with HIV reverse transcriptase. ZINC63941671, ZINC05858010, and ZINC05857787 were found better over the standard drug Rilpivirine, but their interaction was least against ATP synthase. Further, ZINC38959526 (lead against ATP synthase) and ZINC05858010 (lead against reverse transcriptase) share some common chemical features and based on this, new hybrid molecules were designed to inhibit both the targets. The possibility of hERG toxicity was also checked to eliminate unwanted cardiotoxicity.
通过从头开始的药物设计,设计了可能作为ATP合酶抑制剂的新分子,但不是药物样分子。因此,在锌数据库中从设计分子的共同药效团中搜索类药物分子。共获得472次命中,其中ZINC39552534、ZINC39371747、ZINC38959526的对接效果优于标准药贝达喹啉。结核病和艾滋病毒合并感染的易感性使人们有必要寻找对这两种疾病都有效的抑制剂。因此,获得的hit进一步筛选可能与HIV逆转录酶相互作用。ZINC63941671、ZINC05858010和ZINC05857787对ATP合酶的相互作用较弱,优于标准药物Rilpivirine。此外,ZINC38959526 (lead against ATP synthase)和ZINC05858010 (lead against逆转录酶)具有一些共同的化学特征,并在此基础上设计了新的杂交分子来抑制这两个靶点。还检查了hERG毒性的可能性,以消除不必要的心脏毒性。
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引用次数: 0
Networks regulated by ginger towards stomach and small intestine for its warming interior function 姜对胃和小肠的调节网络,具有温热的内部功能
Pub Date : 2019-05-11 DOI: 10.1504/IJCBDD.2019.10021273
N. Wang, Jinghu Wang, Fei Hou, Guang Zheng
Ginger is widely used as both a cooking spice in East/South Asia and a traditional Chinese medicine (TCM) for its warming interior function where mainly refers to the part of stomach and small intestine. However, the underlying mechanism at protein regulating network level is obscure. In this study, within stomach and small intestine, 6-gingerol and 6-shaogaol (ginger's main bio-active compounds), are selected to initialise the underlying protein regulating networks. The initial step is to identify proteins targeted/regulated by ginger which were extracted from PubMed literatures and compound-protein databases. Then, functional protein-protein interactions (FPPI) were fetched to form the underlying regulating networks within stomach and small intestine. Further enrichment analysis of FPPI participating proteins salience five key metabolic processes which can be validated by both PubMed literature and online bioinformatics tools. Thus, ginger's warming interior function is primarily elaborated via FPPI network by enhancing metabolic processes.
生姜在东亚/南亚被广泛用作烹饪香料,也因其温内功能(主要指胃和小肠部分)而被广泛用于中药。然而,蛋白质调控网络水平的潜在机制尚不清楚。在这项研究中,在胃和小肠中,选择6-姜辣素和6-少酚(生姜的主要生物活性化合物)来初始化潜在的蛋白质调节网络。第一步是从PubMed文献和化合物蛋白数据库中提取生姜靶向/调节的蛋白。然后,我们发现功能性蛋白-蛋白相互作用(FPPI)在胃和小肠内形成了潜在的调节网络。FPPI参与蛋白的进一步富集分析突出了五个关键的代谢过程,可以通过PubMed文献和在线生物信息学工具进行验证。因此,生姜的内温功能主要是通过FPPI网络通过促进代谢过程来阐述的。
{"title":"Networks regulated by ginger towards stomach and small intestine for its warming interior function","authors":"N. Wang, Jinghu Wang, Fei Hou, Guang Zheng","doi":"10.1504/IJCBDD.2019.10021273","DOIUrl":"https://doi.org/10.1504/IJCBDD.2019.10021273","url":null,"abstract":"Ginger is widely used as both a cooking spice in East/South Asia and a traditional Chinese medicine (TCM) for its warming interior function where mainly refers to the part of stomach and small intestine. However, the underlying mechanism at protein regulating network level is obscure. In this study, within stomach and small intestine, 6-gingerol and 6-shaogaol (ginger's main bio-active compounds), are selected to initialise the underlying protein regulating networks. The initial step is to identify proteins targeted/regulated by ginger which were extracted from PubMed literatures and compound-protein databases. Then, functional protein-protein interactions (FPPI) were fetched to form the underlying regulating networks within stomach and small intestine. Further enrichment analysis of FPPI participating proteins salience five key metabolic processes which can be validated by both PubMed literature and online bioinformatics tools. Thus, ginger's warming interior function is primarily elaborated via FPPI network by enhancing metabolic processes.","PeriodicalId":13612,"journal":{"name":"Int. J. Comput. Biol. Drug Des.","volume":"51 1","pages":"189-202"},"PeriodicalIF":0.0,"publicationDate":"2019-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76505654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
A comparative study of multiclass feature selection on RNAseq and microarray data 基于RNAseq和微阵列数据的多类特征选择比较研究
Pub Date : 2019-05-11 DOI: 10.1504/IJCBDD.2019.10021274
Silu Zhang, Junqing Wang, Keli Xu, Megan M. York, Yingyuan Mo, Yixin Chen, Yunyun Zhou
Gene expression profiles are widely used for identifying phenotype-specific biomarkers in clinical cancer research. By examining important genes expressed in different phenotypes, patients can be classified into different treatment groups. Microarray and RNAseq are the two leading technologies to measure gene expression data. However, due to the heterogeneity of the two platforms, their selected genes are different. In this project, we systematically compared the breast cancer subtype classification accuracies from the selected genes by four popular multiclass feature selection algorithms and discussed the strengths and weakness of selected genes across different platforms and cohorts. Our results showed that the classification of selected genes performs best within the same platform across different cohorts. It suggested that merging the dataset belonging to the same platform will increase the statistical power and improve the prediction accuracy of the selected gene for multiclass classification analysis.
基因表达谱在临床癌症研究中广泛用于鉴定表型特异性生物标志物。通过检测不同表型中表达的重要基因,可以将患者分为不同的治疗组。微阵列和RNAseq是测量基因表达数据的两种主要技术。然而,由于两个平台的异质性,它们选择的基因是不同的。在本项目中,我们系统地比较了四种流行的多类特征选择算法对所选基因的乳腺癌亚型分类准确性,并讨论了不同平台和群体中所选基因的优缺点。我们的研究结果表明,在不同队列的同一平台中,所选基因的分类效果最好。这表明,合并属于同一平台的数据集可以增加统计能力,提高所选基因的多类分类分析的预测精度。
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引用次数: 1
Identification of temporal network changes in short-course gene expression from C. elegans reveals structural volatility 鉴定秀丽隐杆线虫短期基因表达的时间网络变化揭示了结构的波动性
Pub Date : 2019-05-11 DOI: 10.1504/IJCBDD.2019.10021270
Kathryn M. Cooper, Wail M. Hassan, H. Ali
Many bioinformatics algorithms attempt to extract relevant biological information from datasets obtained at specific data points. However, it is critical to identify changing genes in temporal data so that studies can focus on the dynamics of gene expression. While networks continue to play a significant role in characterising biological relationships, most biomedical network modelling studies focus on 'static' network-based analysis. In this study, we use a temporal, network-based approach to identify and rank genes that exhibit variation in short-course gene expression. We use a Caenorhabditis elegans (C. elegans) gene correlation network obtained from mRNA expression to illustrate the value of the proposed approach, and compare the results of this method to results obtained from traditional differential gene expression analysis. We show that temporal network analysis identifies genes that are inherently different from differentially expressed genes, raising new questions about structural meaning in expression networks and how changes in expression are observed.
许多生物信息学算法试图从特定数据点获得的数据集中提取相关的生物信息。然而,在时间数据中识别变化的基因是至关重要的,这样研究就可以集中在基因表达的动态上。虽然网络继续在描述生物关系方面发挥重要作用,但大多数生物医学网络建模研究侧重于“静态”基于网络的分析。在这项研究中,我们使用一种基于网络的时间方法来识别和排序在短期基因表达中表现出变异的基因。我们使用从mRNA表达中获得的秀丽隐杆线虫(C. elegans)基因相关网络来说明该方法的价值,并将该方法的结果与传统的差异基因表达分析结果进行比较。我们表明,时间网络分析识别基因本质上不同于差异表达的基因,提出了关于表达网络的结构意义和如何观察表达变化的新问题。
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引用次数: 2
Managing data provenance for bioinformatics workflows using AProvBio 使用AProvBio管理生物信息学工作流程的数据来源
Pub Date : 2019-05-11 DOI: 10.1504/IJCBDD.2019.10021271
Rodrigo Almeida, Waldeyr M. C. Silva, Klayton Castro, Aleteia P. F. Araujo, M. E. Walter, Sérgio Lifschitz, M. Holanda
Scientific experiments in bioinformatics are often executed as computational workflows. Data provenance involves documenting the history, and the paths of the input data, from the beginning to the end of an experiment. AProvBio is an architecture that enables the capture and storage of data provenance for bioinformatics workflows using the PROV-DM standard model. AProvBio works with three types of data provenance: prospect, retrospect, and the user-defined type. Given how graphs conveniently express PROV-DM, we have designed and implemented a simulator for storing the data provenance in a graph database system. This paper presents details and implementation aspects of our architecture, and an evaluation of AProvBio through the carrying out of two real case scenarios.
生物信息学中的科学实验通常作为计算工作流程执行。数据来源包括记录从实验开始到结束的历史和输入数据的路径。AProvBio是一种架构,可以使用provo - dm标准模型捕获和存储生物信息学工作流的数据来源。AProvBio处理三种类型的数据来源:前景类型、回顾类型和用户定义类型。考虑到图形如何方便地表达provd - dm,我们设计并实现了一个用于在图形数据库系统中存储数据来源的模拟器。本文介绍了我们架构的细节和实现方面,并通过执行两个真实案例场景对AProvBio进行了评估。
{"title":"Managing data provenance for bioinformatics workflows using AProvBio","authors":"Rodrigo Almeida, Waldeyr M. C. Silva, Klayton Castro, Aleteia P. F. Araujo, M. E. Walter, Sérgio Lifschitz, M. Holanda","doi":"10.1504/IJCBDD.2019.10021271","DOIUrl":"https://doi.org/10.1504/IJCBDD.2019.10021271","url":null,"abstract":"Scientific experiments in bioinformatics are often executed as computational workflows. Data provenance involves documenting the history, and the paths of the input data, from the beginning to the end of an experiment. AProvBio is an architecture that enables the capture and storage of data provenance for bioinformatics workflows using the PROV-DM standard model. AProvBio works with three types of data provenance: prospect, retrospect, and the user-defined type. Given how graphs conveniently express PROV-DM, we have designed and implemented a simulator for storing the data provenance in a graph database system. This paper presents details and implementation aspects of our architecture, and an evaluation of AProvBio through the carrying out of two real case scenarios.","PeriodicalId":13612,"journal":{"name":"Int. J. Comput. Biol. Drug Des.","volume":"23 1","pages":"153-170"},"PeriodicalIF":0.0,"publicationDate":"2019-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87112424","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
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Int. J. Comput. Biol. Drug Des.
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