ヒトゲノムの機能的な領域を見つけるために,霊長類の配列の系統遺伝学的なシェーディング
Dario Boffelli1, Jon McAuliffe, Dmitriy Ovcharenko
1U.S. Department of Energy Joint Genome Institute, Walnut Creek, CA 94598, USA.
Science (New York, N.Y.)
|March 1, 2003
まとめ
類人猿のゲノムを比較すると,ヒトDNAの機能的要素が明らかになる. このアプローチは,共有された哺乳類とユニークな霊長類特有の遺伝領域の両方を特定し,人間の生物学に対する理解を深める.
科学分野:
- ゲノミクスゲノミクスとは
- 比較ゲノミクスとは
- 人間の進化 人類の進化
背景:
- 非人間霊長類は,最近の分岐と配列保存により,ホモ・サピエンスの生物学にとって重要なモデルである.
- 以前の比較シーケンスの研究は,霊長類の進化的近さによって制限されていた.
- 機能的なゲノム領域を特定するには,効果的な比較戦略が必要です.
研究 の 目的:
- ヒトゲノム内の機能的な領域を特定するために,多様な霊長類の配列比較を活用する.
- 靈長類特異的な遺伝子調節要素と遺伝子エクソンを発見する.
- 保存されたユニークなヒトゲノム要素の発見のための霊長類内比較の有用性を評価する.
主な方法:
- 旧世界猿,新世界猿,ホミノイドの比較シーケンス分析.
- 重要な情報コンテンツをキャプチャするために,系統遺伝学的に近い霊長類のサブセットを使用します.
- 類人猿内比較とより遠い種の比較の有効性を評価する.
主要な成果:
- 人間のゲノムにおける新種の霊長類特異的な遺伝子調節要素の発見.
- 比較分析を通じて,複数のヒト遺伝子のエクソンを正確に区切る.
- 密接に関連した霊長類の小さなグループが,重要な比較情報を効果的に捉えていることを示す.
- より遠い親類種との比較によって見逃された機能的要素の特定.
結論:
- イントラプライマートの配列比較は,ヒトゲノムの機能的要素を発見するのに非常に効果的です.
- この方法は,保存された哺乳類と霊長類の遺伝子の特徴を両方で成功裏に特定します.
- 類人猿における比較ゲノミクスは,より異なる種との比較によって達成できないユニークな洞察を提供します.
さらに関連する動画
11:35Screening for Functional Non-coding Genetic Variants Using Electrophoretic Mobility Shift Assay (EMSA) and DNA-affinity Precipitation Assay (DAPA)
Published on: August 21, 2016
07:28Identification of Functionally-Relevant Lentivirus Integration Sites in an Insertional Mutagenesis Cell Library
Published on: January 10, 2025
関連する概念動画
02:05Gene Evolution - Fast or Slow?
The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
In contrast, regions which code...
In contrast, regions which code...
02:54Evolutionary 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...
02:31Synteny and Evolution
John H. Renwick first coined the term “synteny” in 1971, which refers to the genes present on the same chromosomes, even if they are not genetically linked. The species with common ancestry tend to show conserved syntenic regions. Therefore, the concept of synteny is nowadays used to describe the evolutionary relationship between species.
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral chromosome underwent...
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral chromosome underwent...
02:51Multi-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...
02:46Genetic Screens
Genetic screens are tools used to identify genes and mutations responsible for phenotypes of interest. Genetic screens help identify individuals or a group of people at risk of developing genetic diseases and help them with early intervention, targeted therapy, and reproductive options.
Forward genetic screens
Forward or “classical” genetic screens involve creating random mutations in an organism’s DNA using radiation, mutagens, or insertion of additional bases, which result in visible changes...
Forward genetic screens
Forward or “classical” genetic screens involve creating random mutations in an organism’s DNA using radiation, mutagens, or insertion of additional bases, which result in visible changes...
01:28Human Genetics
Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
The complex relationship between genetics and psychology is observable through common biological components such...