ソマティック細胞の遺伝子移植により,マウリン粘膜多糖症第7型における病理の逆転
J H Wolfe1, M S Sands, J E Barker
1Jackson Laboratory, Bar Harbor, Maine 04609.
Nature
|December 24, 1992
まとめ
レトロウイルスベクトルを用いた遺伝子治療は,幹細胞における低レベルのβ-グルキュロニダース発現を長期にわたって可能にし,リゾソーム貯蔵を改善することによって,マウスのスライ症候群を部分的に修正します.
科学分野:
- 遺伝学 遺伝学とは
- バイオケミストリー バイオケミストリー
- 分子生物学は分子生物学である.
背景:
- ムコポリサカリドーシスVII (スリー症候群) は,遺伝的に受け継がれるβ-グルキュロニダース欠乏症で,リソソーム貯蔵症を引き起こす.
- この病気は進行性退化と寿命の短縮につながり,特に罹患したマウスの場合です.
- 骨髄移植は,酵素置換による部分的補正を提供し,寿命を延ばします.
研究 の 目的:
- スライ症候群に対する遺伝子療法の有効性を調査する.
- 病原性幹細胞へのレトロウイルスベクター媒介遺伝子移植が病気を修正できるかどうかを判断する.
- ベータ-グルキュロニダース遺伝子の長期的な発現と治療効果を in vivo で評価する.
主な方法:
- ベータ-グルキュロニダゼ遺伝子のレトロウイルスベクトル媒介による転移が突然変異したマウスの血液生成性幹細胞に.
- 治療されたマウスの遺伝子発現と酵素活性の長期モニタリング.
- 影響を受けた臓器 (肝臓,臓) のリソソーム貯蔵の評価.
主要な成果:
- 血液形成性幹細胞におけるベクトル転送遺伝子からの低レベルのβ-グルキュロニダースの長期発現を成功させる.
- 治療されたマウスで観察されたスライ症候群の部分的修正.
- 肝臓と臓におけるグリコサミノグリカンのリゾソーム蓄積の有意な減少.
結論:
- レトロウイルスベクトル媒介による移植による遺伝子治療は,スライ症候群の有効なアプローチです.
- ベータ-グルキュロニダースの持続的で低レベルの発現は,疾患の現象型を部分的に改善することができます.
- このアプローチは,リンソソーム貯蔵障害の治療のために,骨髄移植の潜在的な代替案を提供します.
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