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The targeted cancer therapies, also known as “molecular targeted therapies,” take advantage of the molecular and genetic differences between the cancer cells and the normal cells. It needs a thorough understanding of the cancer cells to develop drugs that can target specific molecular aspects that drive the growth, progression, and spread of cancer cells without affecting the growth and survival of other normal cells in the body.
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针对YTHDF2/MDSC来改善放射疗法.

Xiaolan Deng1, Ying Qing1, Jianjun Chen2

  • 1Department of Systems Biology, Beckman Research Institute of City of Hope, Monrovia, CA 91016, USA.

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概括

电离辐射会在骨髓系衍生抑制细胞中触发YTHDF2,阻碍放射治疗. 向YTHDF2 (YTH域含有家族蛋白2) 克服了这种免疫抑制,改善了癌症治疗结果.

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科学领域:

  • 在瘤学瘤学.
  • 免疫学 免疫学 免疫学
  • 分子生物学分子生物学

背景情况:

  • 瘤免疫抑制是有效放射治疗的重要障碍.
  • 辐射诱导免疫抑制背后的精确分子机制仍然不完全理解.

研究的目的:

  • 阐明YTHDF2在放射治疗期间调解免疫抑制中的作用.
  • 调查向YTHDF2以提高放射治疗疗效的潜力.

主要方法:

  • 研究了电离辐射 (IR) 对神经元衍生抑制细胞 (MDSCs) 中YTHDF2表达的影响.
  • 在临床前模型中利用了基因枯竭和YTHDF2的药理抑制.
  • 评估了YTHDF2调制对MDSC扩张,迁移和瘤免疫微环境的影响.

主要成果:

  • 发现电离辐射通过IR-YTHDF2-NF-κB信号通路诱导MDSC中的YTHDF2表达.
  • 这种诱导促进了MDSC扩张和迁移,导致放射治疗失败.
  • 对YTHDF2的遗传或药理抑制可以逆转这些免疫抑制作用.

结论:

  • 通过促进MDSC功能,YTHDF2在调解辐射诱导的免疫抑制方面发挥着关键作用.
  • 针对YTHDF2是一个有希望的策略,可以克服治疗耐药性,并改善癌症患者的放射治疗结果.