ファミリアルアデノマトスポリポーシスおよび散発性結腸がんにおけるAPC変異の分子解析
S Cottrell1, D Bicknell, L Kaklamanis
1Cancer Genetics Laboratory, Imperial Cancer Research Fund, London, UK.
Lancet (London, England)
|September 12, 1992
まとめ
Adenomatous Polyposis Coli (APC) 遺伝子の変異は結腸がんと関連しています. APC遺伝子の特定の5塩基対の欠失は,家族性腺腫多重症と散発性結腸腫瘍の両方で特定されました.
科学分野:
- 遺伝学 遺伝学とは
- 腫瘍学 腫瘍学
- 分子生物学は分子生物学である.
背景:
- Adenomatous Polyposis Coli (APC) 遺伝子の変異は,家族性腺多発症 (FAP) と散発性結腸直腸がんに関与しています.
- APC遺伝子は,結腸がんの発症において重要な役割を果たしています.
研究 の 目的:
- FAPおよび散発性大腸がんに関連したAPC遺伝子内の特定の変異を特定するために.
- 患者のコホートとがん細胞系におけるAPC遺伝子変異の頻度と特性を調査する.
主な方法:
- 変異のスクリーニングは,単一鎖型コンフォーマーションポリモルフィズム (SSCP) 解析を用いて行われます.
- 特定された突然変異の特徴,点突然変異,削除,挿入を含む.
- 非放射性ヘテロデュプレックス解析を用いた特定の変異の検出.
主要な成果:
- フレームシフト誘発の削除や挿入を含むいくつかのAPC遺伝子変異は,FAPと散発性結腸腫瘍の両方で特定されました.
- APC遺伝子の特定の5塩基対の消去は,散発的な腫瘍,派生細胞系,および4人の無関係なFAP患者で発見されました.
- この特定の突然変異は,単純な検査で検出可能なヘテロデュプレックスバンドを生成しました.
結論:
- 高度に局所化された短い配列,特にアデニン-チミンランは,観察されたAPC変異の有意な割合 (最大20%) に起因する可能性があります.
- 特定された5塩基対の削除は,APC関連の疾患の潜在的な診断マーカーとして機能します.
- APC遺伝子内の特定の突然変異のホットスポットに関するさらなる研究は,結腸癌の病原性の理解を高める可能性があります.
関連する概念動画
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Colon cancer is one of the best-documented examples of tumor progression. Early mutation in the APC gene in colon cells causes a small growth on the colon wall called a polyp. With time, this polyp grows into a benign, pre-cancerous tumor. Further...
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