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相关概念视频

Genomics02:02

Genomics

35.6K
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...
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Sanger Sequencing01:57

Sanger Sequencing

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DNA sequencing is a fundamental technique that is routinely used in the biological sciences. This method can be applied to a range of questions at different scales - from the sequencing of a cloned DNA fragment or the study of a mutation in a gene up to whole-genome sequencing. However, despite the widespread use of sequencing today, it was not until 1977 that Fredrick Sanger and his collaborators developed the chain-termination method to decode DNA sequences. It relies on the separation of a...
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Next-generation Sequencing03:00

Next-generation Sequencing

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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....
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Genome Annotation and Assembly03:36

Genome Annotation and Assembly

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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.
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一个28纳米完全集成的端到端基因组分析加速器,用于下一代测序.

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    这项研究引入了下一代测序 (NGS) 数据分析的端到端加速器,显著提高了短读映射,变异调用和基因型定制的吞吐量和能源效率. 与现有解决方案相比,新系统实现了更高的精度和灵敏度.

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    科学领域:

    • 生物信息学是一种生物信息学.
    • 计算生物学 计算生物学
    • 基因组学就是基因组学.

    背景情况:

    • 下一代测序 (NGS) 产生了大量的数据,需要高效的分析管道.
    • 当前生物信息学工具在复杂的基因组分析的处理速度,精度和能源消耗方面面临着挑战.
    • 短读数据的端到端分析,包括映射,变异调用和基因定型,是计算密集的.

    研究的目的:

    • 开发和展示第一个端到端加速器,用于下一代测序 (NGS) 数据分析.
    • 为了提高短读映射,哈普类型调用,变异调用和基因造型的效率和准确性.
    • 提供硬件加速解决方案,其性能优于现有的软件和硬件方法.

    主要方法:

    • 使用FM指数进行准确匹配的短读映射和动态编程进行不准确匹配.
    • 实施了快速相似性计算和救援技术,以优化映射工作量和灵敏度.
    • 开发了平行k-mer处理,用于de Bruijn图形构造和哈普洛型组装.
    • 综合变体发现和基因型概率计算引擎,用于全面的变体分析.

    主要成果:

    • 在平均28.2分钟内完成了50× PrecisionFDA数据集的端到端数据分析.
    • 与现有解决方案相比,展示了3-59倍的更高吞吐量.
    • 在变体调用和基因型鉴定中获得了高精度 (99.79%) 和灵敏度 (99.03%).
    • 报告了比Illumina DRAGEN FPGA加速系统高935倍的能效.

    结论:

    • 开发的加速器在NGS数据分析效率和性能方面取得了重大进展.
    • 这种硬件解决方案为关键的基因组任务提供了大幅改善的吞吐量,精度和能源效率.
    • 端到端的方法简化了复杂的生物信息工作流,使得更快,更准确的基因组见解.