コロン粘液のバリア機能には,コップレット細胞のインタークリプトサブポポレーションが不可欠である

Elisabeth E L Nyström¹, Beatriz Martinez-Abad¹, Liisa Arike¹

¹Department of Medical Biochemistry, Institute of Biomedicine, University of Gothenburg, 40530 Gothenburg, Sweden.

Science (New York, N.Y.)

|April 16, 2021

まとめ

大腸のグラス細胞は均一ではありませんインタークリプト・ゴブレット細胞 (icGCs) のような異なるサブタイプは,上皮の保護において重要な役割を果たし,潰瘍性大腸炎に関与しています.

科学分野:

胃腸内科
細胞生物学
免疫学

背景:

腸内粘液層は上皮の保護に不可欠です.
この粘液の主な生産者はグラス細胞です
腸のコップ細胞は以前は均質な細胞集団と考えられていた.

研究の目的:

腸のコップ細胞の異質性を調べるため
グラス細胞のサブタイプとその機能を特定する.
腸の炎症や潰瘍性大腸炎におけるカップル細胞の役割を探る

主な方法:

グラス細胞の遺伝子とタンパク質発現のプロファイリング
異なるコップセル集団の識別と特徴付け
大腸炎のマウスモデルにおけるグラット細胞機能の分析.
人間の潰瘍性大腸炎患者におけるコップレット細胞数と粘液の変化の検査

主要な成果:

独特の分化経路を持つ独特のコップセル集団を特定した.
特定のサブタイプ,インタークリプト・コップレット細胞 (icGCs) が発見され,大腸の光面に位置しています.
密室に居住するコップレット細胞と比べると独特の性質を持つ粘液を生成する.
icGCの欠乏は,マウスの大腸炎や自発性大腸炎に対する感受性の高まりにつながった.
潰瘍性大腸炎患者では,ICGC値の減少と粘液の変化が観察されました.

結論:

腸のコップ細胞は異質性がある.
インタークリプト・コップレット細胞 (icGCs) は,上皮のバリア機能を維持するために不可欠です.
ICGCの機能障害または減少は,潰瘍性大腸炎を含む大腸炎への感受性および発症と関連しています.

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