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配对结尾映射揭示了人类基因组中广泛的结构变异
Jan O Korbel1, Alexander Eckehart Urban, Jason P Affourtit
1Molecular Biophysics and Biochemistry Department, Yale University, New Haven, CT 06520, USA.
Science (New York, N.Y.)
|September 29, 2007
概括
这项研究引入了对结末映射 (PEM) 来识别人类基因组中的大型结构变异 (SV). 研究人员发现了1000多种SV,揭示了人类遗传多样性比以前想象的要多.
科学领域:
- 基因组学就是基因组学.
- 分子生物学分子生物学
- 生物信息学是一种生物信息学.
背景情况:
- 基因组结构变异 (SV) 包含大规模的变化,如删除,重复和反转.
- 了解SVs对于理解人类遗传多样性和疾病至关重要.
研究的目的:
- 开发和应用一种高通量测序方法,用于识别人类基因组中的大型结构变异 (SV).
- 描述不同人群中 SVs 的特征,并研究其功能影响.
主要方法:
- 引入高通量和大规模配对端映射 (PEM),一种基因组测序技术.
- 使用454测序和计算分析来绘制DNA读取和识别大约3千基或更大的SV.
- 采用一种新的聚合策略和计算分析来确定超过200个SV的断点结序列.
主要成果:
- 在非洲和欧洲个体中精细绘制了1000多种结构变异 (SV).
- 与参考基因组相比,共享和分歧的SVs的识别.
- 证明人类中SVs的数量比以前假设的要大得多,其中许多可能会影响基因功能.
结论:
- 这项研究揭示了人类基因组中结构变异的广和低估的景观.
- 配对端映射 (PEM) 是用于大规模SV检测的有效方法.
- 获得了对人类结构变异形成背后的机制的洞察.
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