ヒトの乳がんおよび結腸直腸がんのコンセンサスコード配列
Tobias Sjöblom1, Siân Jones, Laura D Wood
1Ludwig Center and Howard Hughes Medical Institute, Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD 21231, USA.
まとめ
研究者らは,乳がんと結腸直腸がんにおける重要な遺伝子変異を特定した. この研究は,がんに関連する新しい遺伝子を明らかにし,これらの一般的な疾患の潜在的な診断および治療標的を提供します.
科学分野:
- ゲノミクスゲノミクスとは
- がん生物学 がん生物学
- 分子腫瘍学 分子腫瘍学
背景:
- ヒューマンゲノムプロジェクトは,がんにおける遺伝子変異の詳細な識別を可能にします.
- これらの変化を理解することは,がんの研究と治療において極めて重要です.
研究 の 目的:
- ヒトの一般的ながんにおける遺伝的変異を体系的に分析する.
- 腫瘍形成プロセスに寄与する頻繁に変異した遺伝子を特定する.
主な方法:
- よく注釈されたヒトのタンパク質をコードする遺伝子の配列決定.
- 11の乳がんと11の結腸直腸がんのサンプルから13,023の遺伝子を分析した.
主要な成果:
- 個々の腫瘍は平均90の変異遺伝子を蓄積している.
- 189の遺伝子 (平均して1つの腫瘍につき11個) が著しく変異していることが確認されました.
- 特定されたほとんどの遺伝子は,がんでは以前は知られていなかったもので,様々な細胞機能に影響を与えます.
結論:
- この研究は,乳がんおよび結腸直腸がんの遺伝的風景を定義しています.
- 特定された遺伝子は,がんの診断と治療のための新しいターゲットを表しています.
- この発見は,腫瘍生物学における新たな研究方向性を開拓する.
関連する概念動画
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...
Cancer-Critical Genes II: Tumor Suppressor Genes
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
Cancer-Critical Genes II: Tumor Suppressor Genes
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
Cancer-Critical Genes I: Proto-oncogenes
Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...
Signal Sequences and Sorting Receptors
Signal sequences are short amino acid sequences that guide newly synthesized proteins to their proper location within the cell. Classical signal sequences are fifteen to sixty amino acids long and present at the N-terminus of a polypeptide chain. Each signal sequence has a conserved segment of basic residues towards their N terminus, a hydrophobic core, and a C-terminus rich in polar residues. The C-terminus also contains a signal cleavage site and features a -3 -1 sequence motif. The -3-1...

