ヒト の 膠原 細胞 の 宿命 図 は,幹細胞 の 階層 が 変化 し ない こと を 示し て い ます
Xiaoyang Lan1,2,3, David J Jörg4,5, Florence M G Cavalli1,2
1Developmental and Stem Cell Biology Program, The Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada.
Nature
|August 31, 2017
まとめ
グリオブラストーマの幹細胞は 中性的なプロセスを経て 腫瘍の成長を促します 化学療法は薬剤耐性細胞を拡張しますが エピジェネティック化合物は グリオブラストーマの新たな治療戦略を提供します
科学分野:
- 神経腫瘍学
- 癌の幹細胞生物学
- 腫瘍発生
背景:
- グリオブラストーマ (GBM) はグリオブラストーマ幹細胞 (GSC) のサブ集団によって引き起こされる.
- GBM内の機能的異質性の起源は不明である.
- GSCの行動を理解することは GBMの効果的な治療法の開発に不可欠です
研究 の 目的:
- GBM細胞のクローン進化と運命を調査する
- GBMにおける腫瘍内異質性の根本的なメカニズムを解明する.
- 潜在的治療標的を特定する
主な方法:
- ヒトゲノム細胞の 連続異種移植
- クロンの進化と増殖の動態の分析
- GSC集団に対する化学療法効果の評価
- GSCターゲティングのための表遺伝子化合物の評価.
主要な成果:
- GBMのクローンの成長は,GSCに根ざした保存された増殖階層を持つ中立的なプロセスに従います.
- 幹細胞集団は,急速なサイクルを繰り返す原始細胞と不増殖細胞を生成する.
- 化学療法は,既存の薬剤耐性GSCの拡大を促進します.
- 珍しいクローンは 独特のダイナミクスを表しています
- 機能的に異なるGSCは,表遺伝子化合物によって標的にされる.
結論:
- GBMの異質性は,GSCによって支配される中立の進化プロセスから生じる.
- 現在の化学療法では,無意識に抵抗性のある GSC を選択することがあります.
- 特定のGSCを標的としたエピジェネティック治療は,結晶芽細胞腫に対する有望な治療法です.
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