骨の祖先の機能不全は,骨髄形成症と二次性白血病を誘発する
Marc H G P Raaijmakers1, Siddhartha Mukherjee, Shangqin Guo
1Center for Regenerative Medicine, Massachusetts General Hospital and Harvard Medical School CPZN, USA. hraaijmakers@partners.org
Nature
|March 23, 2010
まとめ
メゼンキマ性骨髄生成体は,血液細胞の形成を調節する. これらの細胞におけるDicer1の破壊は,骨髄不全と白血病を引き起こし,がんの発症におけるストロマ細胞の役割を強調する.
科学分野:
- 血液学 ヘマトロジ
- がん生物学 がん生物学
- 幹細胞生物学 幹細胞生物学
背景:
- メセンキマ性ストロマ細胞は組織の"ストロマ"を形成し,幹細胞のニッチを調節する.
- オステオリンゲージ細胞のような特定のメゼンキマ細胞は,血液形成幹細胞の調節に不可欠です.
研究 の 目的:
- 血液形成の調節におけるオステオプロジェニータにおけるDicer1の役割を調査する.
- メゼンキマ・ストロマル細胞機能障害と二次腫瘍生成の関連性を調査する.
主な方法:
- Dicer1の削除は,特にマウスオステオプロジェニータで.
- Dicer1-deleted osteoprogenitorsにおける遺伝子発現の変化を分析した.
- マウスオステオプロジェニータにおけるSbdsデリエーションの影響を調査する.
主要な成果:
- オステオプロジェニータにおけるDicer1の欠失は血液形成の完全性を破壊し,骨髄形成症と急性骨髄性白血病を引き起こした.
- Sbdsの発現の低下は,Dicer1-deleted osteoprogenitorsで観察されました.
- オステオプロジネーターにおけるSbdsの消去は,骨髄機能不全と骨髄形成不全を引き起こした.
結論:
- 特定のメゼンキマ・ストロマル細胞サブセットの障害は,組織ホメオスタシスを破壊し,二次性腫瘍性疾患につながる可能性があります.
- メセンキマ・ストロマル細胞機能不全は,ニッチ誘発性腫瘍形成に関与している.
- オステオプロジェニータDicer1とSbdsは,血液形成の完全性を維持するために重要である.
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