p63 層分化エピテリアの幹細胞の増殖の可能性に不可欠です
Makoto Senoo1, Filipa Pinto, Christopher P Crum
1Department of Cell Biology, Harvard Medical School, Boston, MA 02115, USA.
Cell
|May 8, 2007
まとめ
p63遺伝子は,皮膚のような層状の表 epithelia の成体幹細胞の分裂を維持するために不可欠です. p63がなければ,これらの幹細胞は増殖する能力を失い,組織再生と癌の発症に影響を与えます.
科学分野:
- 幹細胞生物学 幹細胞生物学とは
- 皮質生物学 エピテリア生物学
- 発達生物学 発達生物学とは
背景:
- 成人幹細胞は,老化前に驚くべき自己再生能力を有しています.
- 層状の表皮 (皮膚,前立腺,乳腺) は,高度に再生可能であり,多くのヒトがんと関連しています.
- これらの上皮質における幹細胞の増殖を調節する遺伝子は,ほとんど不明である.
研究 の 目的:
- 層分化エピテリアにおける成人幹細胞の増殖能力におけるp63遺伝子の役割を調査する.
- 幹細胞の結合と分化にp63が不可欠であるかどうかを判断する.
主な方法:
- 皮質細胞におけるp63発現の分析.
- マウスモデルにおけるp63デリエーションの影響を研究する.
- 幹細胞のクローン生成能力と増殖能力を評価する.
- 組織形態変生中に幹細胞の結合と分化を評価する.
主要な成果:
- p63は,有意な増殖能力を持つ上皮細胞で高度に発現しています.
- p63が欠けているマウスは,層状の表皮を完全に失っている.
- p63が不足している幹細胞は,増殖能力の早すぎる枯渇を示します.
- p63は幹細胞の結合または分化に必要ありません.
結論:
- p63は,階層化された上皮質における幹細胞の増殖可能性を制御する重要な系統特異的因子として特定されています.
- p63の役割を理解することは,再生医療と上皮組織におけるがん研究にとって不可欠です.
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