DICER1変異は,家族性肺芽細胞腫における変異である
D Ashley Hill1, Jennifer Ivanovich, John R Priest
1Washington University Medical Center, St. Louis, MO 63110, USA. dashill@cnmc.org
Science (New York, N.Y.)
|June 27, 2009
まとめ
DICER1遺伝子の突然変異は,小児肺がんのまれな小児肺がんである肺芽細胞腫 (PPB) と関連しています. DICER1の肺上皮の喪失は,メゼンキマ細胞の成長に影響を与えることで,腫瘍の発症を促す可能性があります.
科学分野:
- 腫瘍学 腫瘍学
- 遺伝学 遺伝学とは
- 分子生物学は分子生物学である.
背景:
- Pleuropulmonary blastoma (PPB) は珍しい小児肺腫瘍であり,しばしば遺伝性がん症候群と関連しています.
- PPBの特徴は,上皮細胞と中皮細胞で覆われたキストで,悪性変異に弱い.
- いくつかのケースでは,メゼンキマの過剰成長がPPBs内のサルコマ形成につながります.
研究 の 目的:
- マルチプレックスファミリーにおけるPPBの遺伝的基礎を調査する.
- Pleuropulmonary blastomaの病原性におけるDICER1の役割を特定するために.
主な方法:
- 11の複数のPPBファミリーの遺伝子解析.
- DICER1遺伝子変異の分析. DICER1遺伝子変異の分析. DICER1遺伝子変異の分析. DICER1遺伝子変異の分析.
- PPB腫瘍成分におけるDICER1タンパク質発現の免疫ヒストケミカル評価.
主要な成果:
- DICER1のヘテロジゴトの生殖系統変異は,11の複数のPPBファミリーで確認されました.
- DICER1タンパク質発現は,PPB腫瘍の上皮細胞に存在しなかった.
- DICER1タンパク質は,PPB腫瘍の悪性メゼンキマ (肉腫) 部位に存在していました.
結論:
- ゲルムラインのDICER1変異は,多発性肺芽細胞腫の発症に関与しています.
- 肺上皮質におけるDICER1機能の喪失は,調節経路を妨害し,メゼンキマの増殖と腫瘍形成を促進する可能性があります.
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