GAS-J是一个用户友好的浏览器应用程序,用于基因组组装,emm-typing,MLST类型,以及Streptococcus pyogenes的毒性因子基因检测
Norihiko Takemoto1, Kohei Ogura2, Yuan Gao3
1Department of Infectious Diseases, Research Institute, National Center for Global Health and Medicine, Tokyo, Japan.
Microbiology and immunology
|April 20, 2025
概括
我们开发了GAS-J,这是一个在线工具,用于分析Streptococcus pyogenes全基因组测序数据. 它简化了研究人员的emmm类型,多位置序列类型 (MLST) 和病毒性基因识别.
科学领域:
- 微生物学 微生物学
- 生物信息学是一种生物信息学.
- 基因组学就是基因组学.
背景情况:
- 菌株Streptococcus pyogenes (S. pyogenes) 的临床分离物通常使用emm和多部位序列类型 (MLST) 来进行分类.
- 全基因组测序 (WGS) 越来越多地用于S. pyogenes的类型和病毒性基因分析.
- 对WGS数据的生物信息分析对没有专业专业知识的研究人员来说可能具有挑战性.
研究的目的:
- 提供一个可访问的在线工具,GAS-J,用于对S. pyogenes WGS数据进行全面分析.
- 为了自动确定 emm 类型,序列类型 (ST) 和毒性因子基因载体.
- 促进用于流行病学研究的家族遗传树的生成.
主要方法:
- GAS-J接受原始短读WGS数据,并使用Velvet组装器.
- 进行emm型化,结果与常规PCR和桑格测序进行验证.
- 序列类型 (ST) 通过BLAST搜索与七个等位基因参考确定.
- 病毒性因子基因检测使用620种蛋白质的精选数据集.
- 基于SNP的家族遗传树是从406个与流行病学数据相关的隔离物组成的数据集中构建的.
主要成果:
- GAS-J准确地确定了emm类型,与传统方法相一致,包括具有伪emm基因的分离物.
- 该工具成功识别了序列类型 (ST) 并检测了毒性因子基因.
- 遗传学分析纳入了流行病学数据,包括链球菌毒性休克综合征 (STSS) 状态.
- 在线申请可在http://gasj.ncgm.go.jp.jp上进行.
结论:
- GAS-J提供了一个用户友好的平台来分析S. pyogenes WGS数据,简化复杂的生物信息任务.
- 该工具增强了研究人员执行打字,毒性分析和家族遗传分析的能力.
- GAS-J支持对S. pyogenes感染的流行病学监测和研究,包括STSS.
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