自閉症スペクトラム障害児における細菌ゲノム構造変異が診断バイオマーカーとして機能する可能性
Weixin Liu1, Yinghong Lu1, Siew C Ng1,2
1Institute of Digestive Disease and The Department of Medicine and Therapeutics, State Key Laboratory of Digestive Disease, Li Ka Shing Institute of Health Sciences, CUHK Shenzhen Research Institute, The Chinese University of Hong Kong, Hong Kong SAR, China.
Gut
|February 26, 2026
まとめ
細菌ゲノムの構造変異(SV)は自閉症スペクトラム障害(ASD)と関連しています。これらのSVは、子供のASDの診断バイオマーカーとして有望視されています。
科学分野:
- マイクロバイオーム研究
- ゲノム科学
- 神経発達障害
背景:
- 腸内細菌叢のジスバイオーシスは自閉症スペクトラム障害(ASD)と関連しています。
- 細菌ゲノムの構造変異(SV)のASDにおける役割は十分に理解されていません。
研究 の 目的:
- ASD関連細菌SVを同定すること。
- これらのSVのメカニズム的役割を調査すること。
- ASDの臨床バイオマーカーとしての可能性を探ること。
主な方法:
- 452人の子供(ASD 261人、定型発達 191人)からの糞便メタゲノムを解析しました。
- 線形混合効果モデリングを用いて、ASD関連SVおよび組成シフトを同定しました。
- ヒト化腸内マイクロバイオームマウスモデルで候補SVを検証しました。
主要な成果:
- ASDと有意に関連する100個の細菌SVを同定しました。
- SVは代謝および細菌増殖調節に関連する遺伝子に濃縮されていました。
- 9個のSVと3個の細菌種を組み合わせた診断モデルは、81.1%の精度を達成しました。
結論:
- 細菌ゲノムのSVはASDにおいて重要な役割を果たします。
- これらのSVはASDの診断バイオマーカーとして有望です。
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