相关实验视频
Updated: Jul 5, 2026

10:34
Ultra-long Read Sequencing for Whole Genomic DNA Analysis
Published on: March 15, 2019
从八个人类基因组中绘制和测序结构变异
Jeffrey M Kidd1, Gregory M Cooper, William F Donahue
1Department of Genome Sciences and Howard Hughes Medical Institute, University of Washington, Seattle, Washington 98195, USA.
Nature
|May 3, 2008
概括
这项研究绘制了人类基因组中中间规模的遗传变异,包括插入和删除. 研究人员在不同种群中发现了许多新的结构变体及其模式.
科学领域:
- 基因组学就是基因组学.
- 人类遗传学 人类遗传学
- 分子生物学分子生物学
背景情况:
- 人类遗传变异跨越多个尺度,从大染色体变化到单核酸多态.
- 中级结构变异 (插入,删除,反转) 对于理解基因组多样性至关重要.
研究的目的:
- 描述人类基因组中中等规模的结构变异.
- 提供人类结构变异的高分辨率序列图.
- 研究塑造人类基因组的突变过程.
主要方法:
- 采用基于克隆的方法来分析结构变异.
- 在八个具有不同地理祖先的个体中询问了结构变异.
- 对已识别的结构变异进行了完整的测序.
主要成果:
- 完善了1695个结构变异的位置,其中50%在多个个体中发现.
- 发现了525个在人类参考基因组中不存在的新插入序列.
- 揭示了相当大的位点复杂性和对基因组塑造突变过程的洞察力.
结论:
- 建立了人类结构变异的第一个高分辨率序列图.
- 为基因造型平台和未来个体基因组测序提供了一个标准.
- 突出了跨不同祖先的结构变异的流行和新奇性.
相关概念视频
Next-generation Sequencing
The first human genome sequencing project cost $2.7 billion and was declared complete in 2003, after 15 years of international cooperation and collaboration between several research teams and funding agencies. Today, with the advent of next-generation sequencing technologies, the cost and time of sequencing a human genome have dropped over 100 fold.
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features.
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features.
Genome Annotation and Assembly
The genome refers to all of the genetic material in an organism. It can range from a few million base pairs in microbial cells to several billion base pairs in many eukaryotic organisms. Genome assembly refers to the process of taking the DNA sequencing data and putting it all back together in a correct order to create a close representation of the original genome. This is followed by the identification of functional elements on the newly assembled genome, a process called genome annotation.
Genomics
Genomics is the science of genomes: it is the study of all the genetic material of an organism. In humans, the genome consists of information carried in 23 pairs of chromosomes in the nucleus, as well as mitochondrial DNA. In genomics, both coding and non-coding DNA is sequenced and analyzed. Genomics allows a better understanding of all living things, their evolution, and their diversity. It has a myriad of uses: for example, to build phylogenetic trees, to improve productivity and...
Evolutionary Relationships through Genome Comparisons
Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
Multi-species Conserved Sequences
Next-generation sequencing technologies have created large genomic databases of a variety of animals and plants. Ever since the human genome project was completed, scientists studied the genome of primates, mammals, and other phylogenetically distant living beings. Such large-scale studies have provided new insights into the evolutionary relationship between organisms.
Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved DNA...
Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved DNA...
RNA-seq
RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases.
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while microarray-based...
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while microarray-based...

