ジャグド1はダッチェンヌ筋縮症のフェノタイプを救う
Natassia M Vieira1, Ingegerd Elvers2, Matthew S Alexander3
1The Division of Genetics and Genomics, Boston Children's Hospital, Boston, MA 02115, USA; Department of Pediatrics and Genetics, Harvard Medical School, Boston, MA 02115, USA; Human Genome and Stem Cell Center, Biosciences Institute, University of São Paulo, São Paulo 05508-090, Brazil.
Cell
|November 20, 2015
まとめ
軽度のゴールデン・レトリバーの筋肉縮症の犬は,ジャグド1遺伝子発現が増加している. これは,ジャガド1がダッチェンヌ筋縮症の治療標的であり,ディストロフィンに独立した治療アプローチを提供することを示唆しています.
科学分野:
- 遺伝学
- 分子生物学
- 動物モデル
背景:
- デュシェン筋縮症 (DMD) は,治療法のない重症の遺伝疾患で,ディストロフィン欠乏症が特徴です.
- 現在のDMD療法では,ディストロフィン発現を回復する効果は限られている.
- DMDのシグナル伝達経路の調節不良は 潜在的治療目標である.
研究 の 目的:
- ゴールデン・レトリバーの筋肉縮症 (GRMD) の犬における軽度のダッチェンヌ筋縮症の表型の遺伝的および分子的基礎を調査する.
- デュシェンヌ筋縮症の潜在的治療標的をディストロフィン復元とは無関係に特定する.
主な方法:
- リンク分析
- 全ゲノムシーケンシング
- トランスクリプトーム解析
- 軽度対重度の現象型と対照動物のGRMD犬の比較分析
主要な成果:
- 軽度の表型,機能的な筋肉,完全なディストロフィン欠如にもかかわらず正常な寿命を持つ2匹の例外的なGRMD犬を特定しました.
- 軽度の影響を受けた犬のジャグド1遺伝子発現が有意に増加した.
- 機能分析ではジャグド1の過剰発現が 縮性表型を改善することを示した.
結論:
- Jagged1遺伝子発現の増加は,軽度のデュシェンヌ筋縮症のフェノタイプと関連しています.
- Jagged1は,ダッチェンヌ筋縮症の潜在的な治療標的であり,新しいディストロフィン独立の治療戦略を提供します.
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