アポリプロテインLタンパク質による共生体の標的化が腸内免疫を調節する
- Tao Yang 1, Xiaohu Hu 1, Fei Cao 2, Fenglin Yun 1, Kaiwen Jia 3, Mingxiang Zhang 4, Gaohui Kong 1, Biyu Nie 1, Yuexing Liu 1, Haohao Zhang 2, Xiaoyu Li 5, Hongyan Gao 6, Jiantao Shi 3, Guanxiang Liang 6, Guohong Hu 1, Dennis L Kasper 7, Xinyang Song 8, Youcun Qian 9,10
- 1Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China.
- 2Key Laboratory of Multi-Cell Systems, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China.
- 3Key Laboratory of RNA Science and Engineering, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China.
- 4School of Life Science and Technology, ShanghaiTech University, Shanghai, China.
- 5Center for Inflammatory Bowel Disease Research and Department of Gastroenterology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China.
- 6Center for Infectious Disease Research, School of Medicine, Tsinghua University, Beijing, China.
- 7Department of Immunology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA.
- 8Key Laboratory of Multi-Cell Systems, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Shanghai, China. xinyang.song@sibcb.ac.cn.
- 9Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China. ycqian@sinh.ac.cn.
- 10School of Life Science and Technology, ShanghaiTech University, Shanghai, China. ycqian@sinh.ac.cn.
- 0Shanghai Institute of Nutrition and Health, University of Chinese Academy of Sciences, Chinese Academy of Sciences, Shanghai, China.
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PubMedで要約を見る
まとめ
この要約は機械生成です。ネズミの腸内細胞は,セラミド-1-リン酸脂質を介して細菌を特異的に覆うアポリポプロテインL9a/b (APOL9a/b) を放出する. この相互作用は宿主の免疫を強化し,腸の健康を促進します.
科学分野
- 微生物群の研究
- 免疫学
- ホストと微生物の相互作用
背景
- 哺乳類の腸内微生物は 生物活性分子を通して宿主と相互作用します
- シンビオティックな関係から利益を得る宿主戦略は 十分に研究されていない.
研究 の 目的
- 有益な腸の共生関係を媒介する 宿主分泌の要因を調査する
- ホストが共生細菌から恩恵を受けるメカニズムを特定する.
主な方法
- APOL9結合細菌のフローサイトメトリー分類
- 16SリボソームRNA遺伝子配列化 (APOL9-seq) について
- バクテリアのセラミド1酸塩合成の 遺伝子操作
主要な成果
- マウスの腸細胞は,特にセラミド-1-リン酸 (Cer1P) の脂質を介してバクテロイド菌をコーティングするAPOL9a/bを分泌する.
- APOL9a/bコーティングは,バクテリアから外膜膀 (OMV) の生成を誘導する.
- バクテロイド由来OMVは宿主インターフェロンγシグナル伝達と主要組織適合性複合体のクラスII発現を強化する.
結論
- 宿主分泌のAPOL9a/bは,バクテリアのCer1Pを標的として,腸内免疫的ホメオスタシスを促進する.
- APOL9a/b媒介によるOMV生成は宿主の免疫バリア機能を強化する.
- APOL9a/bの喪失は免疫機能を損なっており,病原体に対する感受性を高めます.
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