胞性線維症の位置は,遺伝的に結びついている多型DNAマーカーによって定義されます
まとめ
科学者たちは,共通の遺伝性疾患であるシスティック線維症 (CF) と遺伝的に関連しているDNAマーカーを発見しました. この発見は,CF遺伝子の探求を狭め,分子分析と疾患の理解への道を開く.
科学分野:
- 人間の遺伝学 人間の遺伝学
- 分子生物学は分子生物学である.
- 病気の遺伝子マッピング
背景:
- 胞性線維症 (Cystic Fibrosis,CF) は,約2000人の白人子供のうち1人に発症する自己相性後退性疾患である.
- CFの遺伝的基礎は,分子分析と治療開発のために正確な遺伝子局在化を必要とします.
研究 の 目的:
- 性線維症遺伝子と遺伝的に関連したDNAマーカーを特定し,マッピングする.
- CF遺伝子の染色体位置を狭め,さらなる分子調査を行う.
主な方法:
- 遺伝的リンク分析は,39のヒトファミリーのコホートで実施されました.
- 多形DNAマーカー (D0CRI-917) をCFロカスとPONロカスとの結合にテストした.
主要な成果:
- D0CRI-917 DNAマーカーとシスティック線維症遺伝子との間に有意な遺伝的関連が確立されました.
- DNAマーカーD0CRI-917もPONロカスと関連していることが判明し,PONから5センチモルガン (cM),CFから15cMの遺伝子距離が推定されている.
- CF遺伝子の位置は,ヒトゲノムの約1%に精製され,およそ3000万塩基対であった.
結論:
- リンクされたDNAポリモルフィズムを発見することは,システィック線維症遺伝子の分子分析に向けた重要な第一歩です.
- 現在のデータはCFの単一の場所を支持しているが,遺伝的異質性の可能性はさらなる調査を正当化している.
さらに関連する動画
08:00Generation of Human Nasal Epithelial Cell Spheroids for Individualized Cystic Fibrosis Transmembrane Conductance Regulator Study
Published on: April 11, 2018
05:58Digital Polymerase Chain Reaction Assay for the Genetic Variation in a Sporadic Familial Adenomatous Polyposis Patient Using the Chip-in-a-tube Format
Published on: August 20, 2018
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