関連する実験動画
Updated: Jul 12, 2026

11:11
Detection of Rare Mutations in CtDNA Using Next Generation Sequencing
Published on: August 24, 2017
ゲノムタイリング配列によるヒトの転写された配列のグローバル識別
Paul Bertone1, Viktor Stolc, Thomas E Royce
1Department of Molecular, Cellular, and Developmental Biology, Yale University, New Haven, CT 06520-8103, USA.
まとめ
研究者らは,高密度タイリング配列を用いて1万以上の新しい転写されたゲノム配列を特定した. これらの新しい発見は,ヒトのトランスクリプトームと遺伝子調節に関する私たちの理解を広げています.
科学分野:
- ゲノミクスゲノミクスとは
- 分子生物学は分子生物学である.
- ヒューマン・バイオロジー ヒューマン・バイオロジー
背景:
- すべての転写されたゲノム領域を特定することは,人間の生物学を理解するために不可欠です.
- 現在の方法は,コード配列を包括的に識別する上で限界があります.
研究 の 目的:
- 人間のゲノム内のコード配列を包括的に特定する.
- 既知の遺伝子や予測された遺伝子を超えて,新しい転写された配列を発見すること.
主な方法:
- 高密度オリゴヌクレオチドタイリング配列の構築は,全非繰り返しのヒトゲノム (センセスとアンチセンセスストランド) のためのものです.
- 配列をヒトの肝臓組織からポリアデニル化されたRNAから派生した補完的なDNA (cDNA) にハイブリッド化.
- ハイブリダイゼーション信号による転写された配列の識別.
主要な成果:
- これまでに他の方法では検出されなかった10,595の転写された配列の発見.
- 多くの既知および予測された遺伝子の識別.
- 新しく特定された配列の有意な部分は,インターゲン領域に位置し,哺乳類のタンパク質との同質性を示しています.
結論:
- この研究は,ヒトのトランスクリプトームのカタログを大幅に拡張します.
- 新規の転写された領域,特に遺伝子間の領域では,以前に認識されていない規制要素やコーディングの可能性を示唆しています.
- これらの発見は,ゲノム転写と調節の複雑さを強調しています.
キーワード:
非プログラム的なものです.関連する概念動画
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...
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.
Modern Molecular Taxonomy
Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...

