通过SRC诱导抑制自代表了BAP1突变癌症的治疗脆弱性
Silvia Vega-Rubin-de-Celis1, Amanda Kristani2,3,4, Matthias Kudla1
1Institute for Cell Biology (Cancer Research), University Hospital Essen, Essen, Germany.
Autophagy
|August 4, 2025
概括
向具有BAP1突变的癌症包括抑制SRC激酶和诱导自. 这种组合疗法在临床前模型中显示出有前途,用于治疗缺乏BAP1功能的侵袭性转移性瘤.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症遗传学 癌症遗传学
背景情况:
- BAP1瘤抑制剂在侵袭性癌症中经常发生突变,导致患者的治疗结果不佳.
- 目前对转移性BAP1突变癌症的治疗方法有限.
- BAP1的损失与癌症的攻击性和转移的增加有关.
研究的目的:
- 确定和验证BAP1突变癌症中的新疗法脆弱性.
- 调查涉及BAP1,SRC,BECN1和自的监管轴.
- 评估SRC抑制剂和自诱导剂在BAP1缺乏癌症中的协同效果.
主要方法:
- 研究了BAP1.1对SRC的转录调节.
- 通过SRC.评估了BECN1的相互作用和酸化.
- 用于体外细胞培养,卵子CAM测定和体外患者衍生瘤有机体 (PDTOs).
- 经过测试的SRC抑制剂 (达沙替尼布,博苏替尼布,萨拉卡替尼布) 和自诱导剂 (Tat-BECN1,SW076956,SW063058).
主要成果:
- BAP1的损失导致SRC介导的BECN1抑制和随后的自抑制.
- SRC 抑制剂和自诱导剂在 BAP1 突变的癌细胞中表现出协同作用的抗癌作用.
- 协同药物活性被证实在体外,在卵子中 (CAM测定),以及在皮膜黑色素瘤和ccRCC的PDTO中.
- 在BAP1损失的模型中,治疗疗效尤为明显.
结论:
- 阐明了一个新的BAP1-SRC-BECN1-自调节轴.
- 与SRC抑制剂和自诱导剂的联合疗法代表了对BAP1缺乏癌症的有希望的策略.
- 基于BAP1损失的患者分层对于精确瘤学应用至关重要.
- 这种方法为携带BAP1突变的致命转移性癌症提供了新的治疗途径.
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