成長と微分化のバランスをとるため,臓器細胞の遺伝をミトーシスと結合する
Amma Asare1, John Levorse1, Elaine Fuchs2
1Howard Hughes Medical Institute, Robin Chemers Neustein Laboratory of Mammalian Cell Biology and Development, The Rockefeller University, New York, NY 10065, USA.
まとめ
細胞分裂と組織成長には 適切な臓器遺伝が不可欠です Pex11bの欠乏はペロキシソームの分離を妨害し,細胞分裂と幹細胞の運命に影響する.
科学分野:
- 細胞生物学
- 発達生物学
- 癌 研究
背景:
- 組織形態変異とホメオスタシスは 細胞の成長と微分化のバランスを取ります
- 病気の過程におけるこれらの不均衡の理解は 極めて重要ですが 限られています
- 皮質上の祖先とその子孫は,癌で観察された変異と異なるトランスクリプトミックのプロファイルを示します.
研究 の 目的:
- エピデルマの祖先の増殖と分化とのバランスを調節する重要な要因を特定する.
- 皮膚のホメオスタシスの不均衡の背後にあるメカニズムを調査する.
- 皮膚の障壁障害や癌に対する 新しい治療目標の発見
主な方法:
- ネズミの基礎表皮原産体と分化する子孫の間の差異的遺伝子発現分析.
- 生体内RNA干渉 (RNAi) スクリーンで,表皮の祖先の運命を左右する遺伝子を特定する.
- Pex11b欠乏細胞におけるペロキシソーム分離とミトーシス・スピンドル組織の分析.
主要な成果:
- 皮質の原始体と癌に関連する変異の差異的に表現されたトランスクリプトの識別.
- in vivo RNAiスクリーンは,増殖-分化均衡に影響を与える候補者を明らかにした.
- Pex11bが欠けていた表皮の原始体では,ペロキシソーム分離が低下し,ミトスの遅延を引き起こした.
- Pex11bの欠乏は分極化された細胞分裂と 歪んだ子細胞の運命を妨害した.
結論:
- 臓器細胞の遺伝は細胞分裂とスパインドル並びを調節する上で重要な役割を果たします.
- Pex11bはミトーシス中の適切なペロキシソーム分離に不可欠です.
- 変異した臓器遺伝は細胞の運命を変化させ,組織ホメオスタシスに影響を与え,病気を引き起こす可能性があります.
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