NLRP6炎症ゾームは,腸内微生物生態と大腸炎のリスクを調節する
Eran Elinav1, Till Strowig, Andrew L Kau
1Department of Immunobiology, Yale University School of Medicine, New Haven, CT 06520, USA.
Cell
|May 14, 2011
まとめ
ネズミのNLRP6炎症ゾーム欠乏症は腸内微生物群を変化させ,大腸炎の感受性を高めます. この微生物群は,
科学分野:
- 免疫学 免疫学とは
- 微生物学 微生物学とは
- 胃腸内科 胃腸内科
背景:
- インフラマソームは,損傷信号に対する重要な免疫センサーです.
- 腸内ホメオスタシスにおけるNLRP6炎症ゾームの役割は完全に理解されていません.
研究 の 目的:
- 大腸におけるNLRP6炎症ゾームの機能を調査する.
- NLRP6欠乏が腸内微生物群と大腸炎の感受性に与える影響を決定する.
主な方法:
- NLRP6欠乏マウスモデル
- 糞便の微生物群分析 (16S rRNAシーケンシング)
- デクストランナトリウム硫酸塩 (DSS) 誘発性大腸炎モデル
- クロス・フォースティングとコハウジングの実験
- サイトカイン分析 (CCL5)
- 抗生物質による治療
- 電子顕微鏡による電子顕微鏡
主要な成果:
- NLRP6欠乏症は,IL-18のレベルを低下させ,微生物群の組成を変化させた (拡張されたバクテロイド/プレボテラceae,TM7).
- NLRP6欠乏したマウスは,自発的な腸ハイパープラジアと悪化したDSS大腸炎を示した.
- NLRP6欠乏したマウスからの移植可能なコリトゲン系微生物群は,CCL5誘導による野生型受容体におけるDSS大腸炎を悪化させた.
- Prevotellaceaeは,微生物群に関連したフェノタイプに重要な寄与者として特定されました.
結論:
- NLRP6炎症ゾームは,腸内ホメオスタシスの維持と微生物群の組成の調節に不可欠です.
- NLRP6炎症体経路と関連する微生物群の調節不良は,炎症性腸疾患 (IBD) に誘導する可能性があります.
- 炎症体と微生物群の相互作用をターゲットにすることで,IBDの治療戦略を提供することができる.
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