Sept4/ARTSは幹細胞アポトーシスと皮膚再生を調節する

Yaron Fuchs¹, Samara Brown, Travis Gorenc

¹Strang Laboratory of Apoptosis and Cancer Biology, Howard Hughes Medical Institute, The Rockefeller University, New York, NY 10065, USA.

Science (New York, N.Y.)

|June 22, 2013

まとめ

プロアポプトティックなSept4/ARTS遺伝子は,成人の幹細胞数を調節する. アポトーシスの欠如は,毛皮の幹細胞再生と傷の治癒を促進し,アポトーシスが再生医療の鍵であることを示唆しています.

科学分野:

幹細胞生物学幹細胞生物学とは
アポトーシスの研究
再生医学は再生医学である.

背景:

大人の幹細胞は,組織修復と恒常性維持に不可欠です.
幹細胞増殖の厳格な規制は,がんのような制御不能の細胞増殖を防ぐ.
幹細胞の調節におけるアポトーシスの役割は完全に理解されていません.

研究の目的:

毛囊幹細胞 (HFSCs) の調節におけるプロアポプトティックなSept4/ARTS遺伝子の役割を調査する.
Sept4/ARTS欠乏症が傷の治癒と毛皮の再生に与える影響を判断する.
再生医学におけるアポトーシスを標的とする治療の可能性を探求する.

主な方法:

遺伝子機能を研究するために,Sept4/ARTSノックアウトマウス (Sept4/ARTS(-/-)) を利用しました.
HFSCの行動を追跡するために,系統追跡を使用しました.
ARTSの直接的な標的としてのXIAPの役割を調査した.

主要な成果:

Sept4/ARTS(-/-) のマウスは,アポトーシスから保護されたHFSC数の増加を示した.
これらのマウスは,傷の治癒と毛皮の再生を大幅に改善しました.
XIAPの無効化は,これらの有益な効果を逆転させ,傷の治癒を妨げました.

結論:

アポトーシスは,再生における幹細胞機能の重要な調節因子である.
Sept4/ARTSは,HFSCの拡散と生存を制御する上で重要な役割を果たしています.
アポトーシス経路をターゲットにすることは,再生医療療法にとって有望な戦略です.

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