双極性障害患者の過興奮性ニューロンにおけるリチウムに対する反応の差異
Jerome Mertens1,2, Qiu-Wen Wang1, Yongsung Kim2
1State Key Laboratory of Membrane Biology, Tsinghua-Peking Joint Center for Life Sciences, McGovern Institute for Brain Research, School of Life Sciences, Tsinghua University, Beijing 100084, China.
Nature
|November 3, 2015
まとめ
誘発性多能幹細胞 (iPSCs) は,双極性障害の早期のニューロンの過興奮性を明らかにする. この発見は病気を理解し 標的型リチウム療法を開発するための 新しい生物学的モデルを提供します
科学分野:
- 神経科学
- 幹細胞生物学
- 遺伝学
背景:
- 双極性障害は重度の神経精神疾患であり,有意な罹病率と死亡率があります.
- 以前の研究では 脳の変化が特定されましたが 正確な病理を定義するのに苦労しました
- 双極性障害の正確な生物学的モデルを 開発することは困難でした
研究 の 目的:
- 人間の双極性障害のための誘発性多能幹細胞 (iPSC) ベースのモデルを開発する.
- 双極性障害患者の iPSC に由来するニューロンの細胞表型を調査する.
- 病気のメカニズムと治療反応を理解するためのiPSCモデルの可能性を調査する.
主な方法:
- 双極性障害の患者から生成された iPSCs
- ヒポキャンパスの歯状回状の神経細胞に 微分化されました
- RNAシーケンシング,ミトコンドリア測定,パッチクランプ記録,およびCa2+画像を用いた.
主要な成果:
- 双極性障害患者の 神経細胞にミトコンドリア異常が検出されました
- これらのニューロンの活性過剰発射 (過刺激性) が観察された.
- リチウムは リチウムに反応する神経細胞の 過剰興奮を 選択的に逆転させました
結論:
- ニューロンの過興奮は双極性障害の初期のエンドフェノタイプです.
- iPSCモデルは双極性障害を研究するための貴重なツールです.
- このモデルは双極性障害の治療のための新しい治療法や薬の開発に役立ちます.
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