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arXiv 1310.7249q-bio.GN
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识别非随机体细胞突变时考虑蛋白质结构的空间模拟方法

A Spatial Simulation Approach to Account for Protein Structure When Identifying Non-Random Somatic Mutations

Gregory Ryslik, Yuwei Cheng, Kei-Hoi Cheung, Robert Bjornson, Daniel Zelterman, Yorgo Modis, Hongyu Zhao

摘要:

背景资料:目前的研究表明,一小部分“驱动”突变是肿瘤发生的原因,而更多的“乘客”突变发生在肿瘤中,但不会使疾病进展。由于最近在治疗由驱动突变引起的癌症方面的药理学成功,已经开发了多种尝试鉴定此类突变的方法。基于驱动突变倾向于聚集在蛋白质的关键区域的假设,簇识别算法的开发变得至关重要。结果如下:我们开发了一种新的方法,空间蛋白质氨基酸聚类(SpacePAC),通过直接在3D空间中考虑蛋白质的三级结构来识别突变聚类。通过结合癌症体细胞突变目录(COSMIC)中的突变数据和蛋白质数据库(PDB)中的空间信息,SpacePAC能够识别许多蛋白质中的新突变簇,如FGFR 3和CHRM 2。此外,SpacePAC能够更好地定位最重要的突变热点,如BRAF和ALK病例所示。R软件包可在Bioconductor网站上获得:http://www.bioconductor.org/packages/release/bioc/html/SpacePAC.html结论:SpacePAC为识别突变簇增加了一个有价值的工具,同时考虑蛋白质三级结构

英文摘要:

Background: Current research suggests that a small set of "driver" mutations are responsible for tumorigenesis while a larger body of "passenger" mutations occurs in the tumor but does not progress the disease. Due to recent pharmacological successes in treating cancers caused by driver mutations, a variety of of methodologies that attempt to identify such mutations have been developed. Based on the hypothesis that driver mutations tend to cluster in key regions of the protein, the development of cluster identification algorithms has become critical. Results: We have developed a novel methodology, SpacePAC (Spatial Protein Amino acid Clustering), that identifies mutational clustering by considering the protein tertiary structure directly in 3D space. By combining the mutational data in the Catalogue of Somatic Mutations in Cancer (COSMIC) and the spatial information in the Protein Data Bank (PDB), SpacePAC is able to identify novel mutation clusters in many proteins such as FGFR3 and CHRM2. In addition, SpacePAC is better able to localize the most significant mutational hotspots as demonstrated in the cases of BRAF and ALK. The R package is available on Bioconductor at: http://www.bioconductor.org/packages/release/bioc/html/SpacePAC.html Conclusion: SpacePAC adds a valuable tool to the identification of mutational clusters while considering protein tertiary structure

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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