パーキンソン病の病理学と遺伝学
Asa Abeliovich1,2,3, Aaron D Gitler4
1Department of Pathology and Cell Biology, Columbia University, New York, New York 10032, USA.
Nature
|November 11, 2016
まとめ
パーキンソン病はドーパミンニューロンの喪失を伴うもので,潜在的にリゾソームの輸送と廃棄物の処理に障害がある. 内部の細胞プロセスと炎症のような外部の要因の両方が,この神経変性障害に寄与する可能性があります.
科学分野:
- 神経科学
- 細胞生物学
- 遺伝学
背景:
- パーキンソン病 (PD) は,年齢に関連した一般的な運動障害です.
- 中脳ドーパミンニューロンの 漸進的な喪失は PDの病理生理学的特徴です
- このニューロンの喪失の正確な原因は ほとんど不明です
研究 の 目的:
- パーキンソン病における細胞内輸送欠陥の役割を調査する.
- タンパク質とミトコンドリアの蓄積がニューロン死亡に与える影響を調査する.
- パーキンソン病の進行に対する細胞外的なメカニズムの影響を調べる.
主な方法:
- 遺伝子研究と実験モデルシステムのレビュー
- 細胞内輸送経路の分析,リンソーム機能に焦点を当てた.
- 神経細胞におけるタンパク質集積とミトコンドリア機能障害の調査.
- 炎症とプリオンのような拡散の役割の評価
主要な成果:
- リンソーム輸送経路の欠陥はパーキンソン病に関連しています.
- 異常なタンパク質と損傷したミトコンドリアの蓄積は神経機能障害に寄与する.
- アクソン末端機能障害は,細胞内除去メカニズムが過度に圧迫されていることによって生じる可能性があります.
- 炎症やプリオンのような拡散のような細胞外的要因はPDの病原性を調節する可能性があります.
結論:
- 細胞内輸送の欠陥,特にリソソームが関わっているのは,パーキンソン病において極めて重要です.
- 機能不全の廃棄物処理メカニズムは 有毒な細胞成分の蓄積に寄与します
- パーキンソン病の神経変性カスケードには 細胞内プロセスと外部要因の両方が 複雑な役割を果たします
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