在前列腺癌中,ATM和ATR抑制会增加放射敏感性和cGAS-STING激活
Nina van Campen1, Vera E Mekers1, Maaike W Looman1
1Radiotherapy and OncoImmunology laboratory, department of Radiation Oncology, Radboud University Medical Center, Nijmegen, the Netherlands.
Cytokine
|June 18, 2025
概括
抑制ATM和ATR激酶会增加前列腺癌细胞对辐射的敏感性,增强细胞死亡并激活免疫通路. 这种组合疗法在治疗转移性割抵抗性前列腺癌方面表现有前途.
科学领域:
- 在瘤学瘤学.
- 癌症生物学 癌症生物学
- 放射治疗研究 放射治疗研究
背景情况:
- 尽管有可用的治疗方法,转移性割抵抗性前列腺癌 (mCRPC) 仍然是无法治愈的.
- 大约23%的mCRPC患者患有DNA损伤反应 (DDR) 基因变异.
- DDR基因突变可以使癌细胞对辐射和免疫治疗敏感.
研究的目的:
- 研究抑制ATM和ATR激酶对前列腺癌细胞辐射敏感性的影响.
- 评估ATM和ATR抑制对辐射后cGAS-STING通路激活的作用.
- 探索用于mCRPC治疗的组合策略.
主要方法:
- 使用了三个前列腺癌细胞系 (PC3,DU145).
- 使用ATM和ATR抑制剂,单独或与辐射相结合.
- 测量细胞死亡,放射性敏感性,cGAMP水平和I型干扰素基因表达.
主要成果:
- 在PC3和DU145细胞系中,ATM和ATR抑制增加了放射性敏感性.
- 联合ATM和ATR抑制显著增强了辐射诱导的细胞死亡.
- ATM抑制 (单独或与ATR抑制相结合) 增加了辐射诱导的cGAMP水平和I型干扰素信号.
结论:
- 抑制ATM和ATR可以增强前列腺癌细胞的辐射敏感性,促进细胞死亡.
- 联合ATM和ATR抑制与放射治疗激活了cGAS-STING通路和I型干扰素反应.
- 这种方法有望改善mCRPC治疗中的放射治疗和免疫治疗组合.
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