薬物乱用は,メソリンビック経路をハイジャックし, ホメオスタシスの必要性を処理する
Bowen Tan1, Caleb J Browne2,3, Tobias Nöbauer4
1Laboratory of Molecular Genetics, Howard Hughes Medical Institute, The Rockefeller University, New York, NY 10065, USA.
まとめ
薬物乱用は ニュークレア・アクンベンスの活動を変えることで 脳の報酬回路を乱します この分子と回路レベルの干渉は 自然な報酬消費を抑制し 生まれつきのニーズに影響します
科学分野:
- 神経科学
- 分子生物学
- 依存症 研究
背景:
- 薬物乱用は 脳の報酬システムに 影響を及ぼし 依存症を引き起こします
- これらの薬が報酬の経路を乗っ取る正確なメカニズムと 自然な報酬処理への影響は不明です
研究 の 目的:
- 薬物乱用が脳の報酬システムに 干渉する仕組みの 分子と回路を解明する
- 細胞型特異的な薬剤が核アクンベンスの活動と自然報酬消費に及ぼす影響を調査する.
主な方法:
- 全脳FOSマッピングとインビオ単一ニューロンカルシウム画像を用いて神経活動を観察した.
- FOS-Seq,CRISPR-perturbation,および単核RNA配列は,分子基板を特定するために使用されました.
- 循環レベルでの影響を理解するために,核アクンベンスの投影領域のマッピングが行われました.
主要な成果:
- 薬物乱用はドーパミノセプティブ・アンサンブル・アクティビティ (NAc) を強化する.
- これらの薬は,細胞タイプに特異的な方法で,自然報酬に対する集合反応を乱します.
- *Rheb*遺伝子はNAc信号伝達を調節し,自然報酬消費を抑制する分子基板として識別された.
結論:
- 薬物乱用は 一般的な報酬経路の ダイナミックな分子と回路の基礎を 妨害します
- この干渉は 報酬システムの機能を変えることで 生まれながらのニーズを満たすことを妨げます
- 薬物乱用が自然報酬の処理にどのように影響するかを機械的に理解できます.
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