多レベルプロテオミクスは,CT45を卵巣がんにおける化学感受性媒介体および免疫療法標的として識別する
Fabian Coscia1, Ernst Lengyel2, Jaikumar Duraiswamy3
1Department of Proteomics and Signal Transduction, Max Planck Institute of Biochemistry, 82152 Martinsried, Germany; Clinical Proteomics Group, Proteomics Program, Novo Nordisk Foundation Center for Protein Research, University of Copenhagen, 2200 Copenhagen, Denmark.
Cell
|September 23, 2018
まとめ
癌/丸抗原45 (CT45) は,高度の血清性卵巣がん (HGSOC) の長期生存における重要な要因である. 高いCT45発現はプラチナ化学療法に対する感度と免疫反応を改善し,新たな治療目標を提供します.
科学分野:
- 腫瘍学
- プロテオミクス
- 免疫学
背景:
- 高度血清性卵巣がん (HGSOC) は,プラチナ化学療法に対する耐性を頻繁に発達させ,再発を引き起こす.
- HGSOC患者のサブセット (15%) は,基礎にある保護メカニズムを示唆する,長期の病気フリー生存を達成します.
研究 の 目的:
- 先進段階のHGSOCにおける長期生存の分子要因を特定する.
- プラチナ感受性および予後における癌/丸抗原45 (CT45) の役割を調査する.
主な方法:
- プラチナ耐性およびプラチナ敏感性患者のホルマリン固定型,パラフィン埋め込まれたHGSOC腫瘍の定量タンパク質解析.
- CT45の分子経路を明らかにするために,フォスフォと相互作用プロテオミクス.
- CT45由来ペプチドとその免疫活性化可能性を特定する免疫ペプチドミクス.
主要な成果:
- 癌/丸抗原45 (CT45) は,進行したHGSOCにおける無疾患生存率を2倍にする独立した予後因子として特定された.
- CT45はPP4フォスファタゼ複合体と直接相互作用し,DNA損傷反応経路に影響を与えます.
- 高いCT45発現はDNA損傷とプラチナ感受性を増加させる.
- CT45から派生したHLAクラスIペプチドは,患者の細胞毒性T細胞を活性化し,腫瘍細胞の死を促した.
結論:
- CT45は,HGSOCにおける好ましい予後とプラチナ感受性の決定要因である.
- CT45のDNA損傷修復と免疫活性化の役割は,新しい治療の機会を提供します.
- 臨床がんプロテオミクスは,HGSOCにおけるバイオマーカーと治療標的の発見のための強力なアプローチです.
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