基礎細胞からのトランセピテリアの投影は,擬層化エピテリアの光センサーである
Winnie Wai Chi Shum1, Nicolas Da Silva, Mary McKee
1Center for Systems Biology, Program in Membrane Biology/Nephrology Division, Massachusetts General Hospital, Boston, MA 02114, USA.
Cell
|December 17, 2008
まとめ
特定の組織の基礎細胞は,光線に投影を広げ,環境を感知できるようにします. この発見は,上皮細胞がコミュニケーションをとり,組織機能を調節するための新しいメカニズムを明らかにしています.
科学分野:
- 細胞生物学 細胞生物学
- 皮質生物学 エピテリア生物学
- 生殖生物学 生殖生物学
背景:
- 基礎細胞は通常,表 epithelia の基礎側側側に限られている.
- 照明環境との直接的な相互作用は,これまで文書化されていない.
研究 の 目的:
- pseudostratified epitheliaにおける基礎細胞のサブセルラー局所と機能を調査する.
- 基礎細胞のプロジェクションが光環境を感知し,上皮機能を調節する役割を探求する.
主な方法:
- 細胞構造を視覚化するために,高解像度3Dコンフォカル画像を用いた.
- 免疫ヒスト化学と受容体の局所化に関する研究が行われました.
主要な成果:
- 基礎細胞は,薄い細胞プラズマの突起をルメンに向かって伸ばし,男性の生殖器および呼吸道における緊密な交差点を横断することを観察した.
- これらの投影は,アニオテンシンII型2受容体 (AGTR2) を epididymis.に含んでいることが判明しました.
- アンジオテンシンIIによるルミナルAGTR2の活性化により,隣接するクリア細胞のプロトン分泌が刺激されます.
結論:
- 基礎細胞は,特殊な細胞プラズマの投影を通して,光環境を積極的に感知することができる.
- この相互作用は,基礎細胞と他の上皮細胞の交差を容易にし,上皮機能を調節します.
- 基礎細胞の光の感知を含む,上皮細胞のコミュニケーションと調節のための新しいパラダイムが提案されています.
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