ミトコンドリア機能障害は,自閉症に関連する社会的欠陥の潜在的なメカニズムとして,H2S媒介のシナプス硫化を明らかにする
Panpan Xian1, Mengmeng Wang2, Rougang Xie2
1Department of Neurobiology, Institute of Neurosciences, School of Basic Medicine, Fourth Military Medical University, Xi'an, Shaanxi 710032, China; Department of Neurology, Tangdu Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710038, China.
Cell metabolism
|September 4, 2025
まとめ
脳における硫化水素 (H2S) とタンパク質硫化水素の上昇
科学分野:
- 神経科学
- 生物化学
- 遺伝学
背景:
- ミトコンドリア機能障害は,自閉症患者の周辺組織で観察されています.
- 自閉症における神経代謝の役割は不明である.
研究 の 目的:
- 自閉症モデルにおけるニューロン代謝と硫化水素 (H2S) を研究する.
- H2Sがシナプス機能と社会的行動に与える影響を研究する.
主な方法:
- Shank3b-/とFmr1-/yのマウスモデルにおける前帯状皮質 (ACC) に焦点を当てた.
- シナプス伝達,社会的機能,タンパク質の水分補給を評価した.
- シスタチオニンβ合成 (CBS) の操作と硫黄アミノ酸の制限を活用した.
主要な成果:
- 両方の自閉症モデルのACCニューロンではH2Sレベルが上昇した.
- CBSの過剰発現はシナプス機能と社会的行動に 障害をもたらした.
- mGluR5を含むシナプスタンパク質の硫化が変化し,mGluR5の硫化除去は部分的に社会的赤字を救済した.
- 硫黄アミノ酸の制限は,マウスモデルと人間のニューロンの社会的およびシナプス欠陥を改善しました.
結論:
- 過剰なH2Sとシナプスタンパク質硫化は自閉症に関連する社会的機能障害の潜在的なメカニズムです.
- H2S代謝とタンパク質硫化をターゲットにすることで 自閉症の治療戦略を提供することができる.
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