マウスにおけるシスティック線維症は,標的型挿入型変異性による
J R Dorin1, P Dickinson, E W Alton
1MRC Human Genetics Unit, Western General Hospital, Edinburgh, UK.
Nature
|September 17, 1992
まとめ
科学者たちは,システィックフィブロシスのトランスメブラン伝導性レギュレータ遺伝子を破壊することによって,システィックフィブロシスのマウスモデルを作成しました. これらのマウスは主要な疾患の特徴を示しており,新しいシスティック線維症治療法の開発に貴重なツールを提供します.
科学分野:
- 遺伝学 遺伝学とは
- 生理学 生理学とは
- 動物モデル 動物モデル
背景:
- 胞性線維症は致命的な遺伝疾患で,世界中で5万人に罹患しています.
- 検証された動物モデルは,システィックフィブロシスの理解と治療に不可欠です.
- 性線維症のトランスメブラン伝導性調節器 (CFTR) 遺伝子は,この疾患に関与しています.
研究 の 目的:
- システィック線維症のマウスモデルを開発する.
- 病気のメカニズムを研究し,治療法を試験する際のモデルの有用性を検証する.
主な方法:
- 遺伝子ターゲティングは,胚性幹細胞のマウスCFTR遺伝子を破壊するために使用されました.
- 細菌系キメラが生成され,異性交の交差が研究されました.
- 生体内電気生理学と組織学的分析を子孫に実施した.
主要な成果:
- 機能的なCFTRが欠けていたホモジゴス型変異性マウスは,離乳期間を超えて生き残った.
- 電気生理学では,システィック線維症と一致する欠陥の塩化物イオン輸送が確認されました.
- 組織学的分析により,ヒトの病気を反映した,大腸,肺,管の病理が明らかになった.
結論:
- 開発された挿入マウス変異は,システィック線維症の有効な動物モデルを表しています.
- このモデルは,疾患の病原性を調査し,潜在的な治療的介入を評価するのに適しています.
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