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相关概念视频

Genomics02:02

Genomics

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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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Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
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胃癌基因组学研究使用参考人体泛基因组.

Du Jiao1, Xiaorui Dong1, Shiyu Fan1

  • 1Department of Bioinformatics and Biostatistics, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai, China.

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概括

胃癌基因组学研究从使用基于图形的泛基因组作为参考来获益,特别是用于结构变异识别. 基于泛基因组的分析显示了疾病基因组学的前景,尽管工具需要开发.

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科学领域:

  • 基因组学就是基因组学.
  • 癌症研究 癌症研究
  • 生物信息学是一种生物信息学.

背景情况:

  • 基因组学研究正在转向泛基因组参考.
  • 基于泛基因组的分析是疾病基因组学研究的新生.

研究的目的:

  • 为胃癌引入基于图形的基因组 (GGCPan).
  • 为了比较GGCPan,一个线性泛基因组 (GCPan) 和癌症基因组学分析的人类参考基因组.

主要方法:

  • 从185名胃癌患者中构建了一个基于图形的基因组 (GGCPan).
  • 系统地比较了使用GGCPan,GCPan和人类参考基因组的变异检测和基因识别.

主要成果:

  • 在小型变异检测和微卫星不稳定性识别中,在参考数据中几乎没有差异.
  • GGCPan显著改善了结构变异的识别.
  • 确定了24个胃癌候选驱动基因,其中5个是基于泛基因组的分析.

结论:

  • 疾病特异性泛基因组显示出希望作为癌症基因组学中的参考.
  • 对于泛基因组时代的疾病基因组学,需要进一步开发生物信息学工具.