生まれながらのリンパ性細胞が微量栄養素欠乏症に適応することは,2型バリア免疫を促進します
S P Spencer1, C Wilhelm, Q Yang
1Immunity at Barrier Sites Initiative, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Disease, NIH, Bethesda 20892, USA.
Science (New York, N.Y.)
|January 25, 2014
まとめ
栄養失調は免疫細胞に影響を及ぼします. ビタミンA欠乏症は,先天性リンパ性細胞3型 (ILC3s) を弱め,ILC2sを拡張し,特定の感染症に対する耐性を高めます.
科学分野:
- 免疫学 免疫学とは
- 栄養科学とは,栄養科学である.
- 微生物学 微生物学とは
背景:
- 障壁表面での栄養不良に対する免疫システムの適応は,十分に理解されていません.
- ビタミンA欠乏症は適応免疫を損なう.
- 生まれながらのリンパ性細胞 (ILC) は,粘膜免疫において重要な役割を果たします.
研究 の 目的:
- 免疫系が栄養不良,特にビタミンA欠乏にどのように適応するかを調査する.
- 栄養不足中の免疫反応におけるILCの役割を決定する.
- 障壁表面での宿主防御への影響を理解する.
主な方法:
- ビタミンA欠乏マウスにおけるILC群 (ILC3sとILC2s) の分析.
- バクテリアおよびネマトード感染症に対する免疫応答の評価.
- ILC2s.によるインタールイキン-13 (IL-13) 生産の評価
主要な成果:
- ビタミンA欠乏症は,ILC3sの有意な減少につながり,細菌感染に対する免疫を損なう.
- 逆説的に,ビタミンA欠乏は,IL-13-産生するILC2sの顕著な拡張を引き起こしました.
- この膨張により,ネズミのネマトード感染に対する耐性が生じた.
結論:
- ILCは,食事によるストレスや栄養不良の重要なセンサーです.
- 栄養不良は,先天性型2型免疫へのシフトを誘導する.
- この免疫適応は,栄養不足や障壁の課題の間に宿主の生存を向上させる可能性があります.
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