空間モデルでは,分散と細胞の周回が腫瘍の異質性を制限することを予測している
Bartlomiej Waclaw1, Ivana Bozic2,3, Meredith E Pittman4
1School of Physics and Astronomy, University of Edinburgh, JCMB, Peter Guthrie Tait Road, Edinburgh EH9 3FD, UK.
Nature
|August 27, 2015
まとめ
腫瘍の進化は,短距離の分散と転移による細胞の混合によって説明されます. 癌細胞の急速な増殖と 化学療法に対する耐性の発達を可能にします
科学分野:
- 腫瘍学
- 進化生物学
- コンピューター生物学
背景:
- ヒトのがんのほとんどは 巨大で 何十億もの細胞があり 共通する遺伝子の核を 持っていることが多いのです
- 腫瘍の異質性は通常,後期に発生した変異から生じるが,拡大のメカニズムは不明である.
研究 の 目的:
- 腫瘍の進化をモデル化し 腫瘍内の遺伝的変異の拡大を説明します
- 腫瘍の急速な成長と 化学療法への耐性を調べるため
主な方法:
- 腫瘍の進化をシミュレートする コンピューターモデルを開発した
- 組み込みの短距離細胞分散と細胞周期の動態
- 腫瘍細胞の置換に対する選択的優位性の影響を分析した.
主要な成果:
- 短距離の分散と細胞の周回は,腫瘍内の細胞の急速な混合を促進します.
- わずかな選択的優位性さえも 変異した細胞の急速な拡張を可能にし 既存の腫瘍を 置き換えるのです
- これらのメカニズムは 化学療法に対する耐性の急速な発達を説明します
結論:
- 細胞の短距離移動や転移が 腫瘍の進化を促す要因です
- 短距離の細胞移動活動をターゲットにすることで,腫瘍の成長率を減らすための新しい治療戦略を提供することができます.
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