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BORISは,治療に抵抗するがん細胞におけるクロマチン調節相互作用を促進する
David N Debruyne1,2, Ruben Dries1,2,3, Satyaki Sengupta1,2
1Department of Pediatric Oncology, Dana-Farber Cancer Institute, Boston, MA, USA.
Nature
|August 9, 2019
まとめ
CCCTC結合因子 (CTCF) のパラログであるBORIS (インプリントされた部位のレギュレータの兄弟) は,クロマチンの相互作用を変化させることで癌細胞の抵抗を駆動する. 過剰調節されたBORISは,超強化剤と転写因子を促進し,悪性現象をサポートします.
科学分野:
- ゲノミクス
- 癌 生物学
- エピジェネティクス
背景:
- CCCTC結合因子 (CTCF) は,ゲノムを構造領域に分類し,遺伝子制御を制御する.
- ガンにおけるCTCF結合の障害は腫瘍遺伝子を活性化させる可能性があります.
- CTCFのパラログであるBORIS (インプリントされた部位の調節器の兄弟) の悪性腫瘍における役割は不明である.
研究 の 目的:
- 特にALK抑制に抵抗する神経芽細胞におけるBORISの役割を調査する.
- BORISが悪性現象型と薬剤耐性を促すメカニズムを解明する.
主な方法:
- ALK阻害に対する耐性を示すALK変異したMYCN増幅ニューロブラストーム細胞の分析
- 遺伝子発現,クロマチンの相互作用,および転写因子の活性に関する調査.
- MYCN,BORIS,およびクロマチンの改造の相互作用に焦点を当ててください.
主要な成果:
- 異常なBORISアップレギュレーションは,耐性神経芽細胞におけるクロマチンの相互作用を促進する.
- 耐性の獲得には,MYCN依存からBORIS依存へのフェノタイプの切り替えが含まれます.
- BORIS 調節されたクロマチンのループは,抵抗性フェノタイプを定義するプロニューラル転写因子の子宮外発現を誘発する超強化剤を形成する.
結論:
- BORISは,特定の癌のフェノタイプをサポートするクロマチンの調整相互作用を促進する上で重要な役割を果たします.
- この研究は,神経芽細胞腫におけるBORISによって引き起こされる新薬耐性のメカニズムを特定した.
- BORISは,ある種のがんにおける耐性を克服するための潜在的な治療目標です.
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