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Updated: Jun 23, 2026
10:37
Induction and Analysis of Epithelial to Mesenchymal Transition
Published on: August 27, 2013
エピテリア腫瘍細胞によるE-カデリンの発現の遺伝子操作は,侵入抑制作用を示す
K Vleminckx1, L Vakaet, M Mareel
1Laboratory of Molecular Biology, State University of Ghent, Belgium.
Cell
|July 12, 1991
まとめ
細胞粘着分子であるE-カデリンは,腫瘍の侵入を抑制する. E-カデリンの導入により,侵襲性が低下し,同時に侵襲性が増加し,腫瘍抑制剤としての役割が証明されました.
科学分野:
- 分子生物学は分子生物学である.
- がん研究 がん研究
- 細胞生物学 細胞生物学
背景:
- 細胞-細胞粘着分子は,組織構造と機能を維持する上で重要な役割を果たします.
- エピセリアル-メゼンキマトランジション (EMT) は,腫瘍細胞の運動性と侵入性の増加に関連するプロセスです.
- 腫瘍の侵入を調節するE-カデリンの役割は複雑で,さらなる解明が必要である.
研究 の 目的:
- 腫瘍細胞の侵入を調節するE-カデリンの機能的役割を調査する.
- E-カデリンの発現が,上皮腫瘍細胞の侵襲的可能性に直接影響するかどうかを判断する.
- 癌におけるE-カデリンの活性を調節する治療の可能性を調査する.
主な方法:
- E-カデリンのcDNAを高度に侵襲的な犬の腎臓とネズミの乳腺腫瘍細胞系に転移させる.
- インビトロ侵襲アッセイ (例えば,マトリゲル侵襲アッセイ) を使用して侵襲性の評価.
- ラス型変異細胞における反感覚RNA技術を用いた内生性E-カデリン発現の調節.
主要な成果:
- トランスフェクタントにおける高レベルのE-カデリン発現は,インビトロ侵入の有意な減少につながった.
- E-カデリンの抗体によるE-カデリンの機能の再導入により,侵入性が回復しました.
- 非侵襲性細胞におけるE-カデリンのダウンレギュレーションは侵襲性特性を誘発した.
- 腫瘍創生の研究では,E-カデリンの発現が腫瘍の微分化にインビョ (in vivo) 影響を及ぼすことが示されました.
結論:
- E-カデリンは,上皮腫瘍細胞における重要な侵入抑制分子として機能する.
- E-カデリン発現または機能を調節することは,がん転移を抑制する潜在的な治療戦略です.
- これらの発見は,がんの進行におけるE-cadherinの抗侵襲的役割の直接的な証拠を提供します.
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