在ROR2/CREB信号通路的下游,ASCL1被激活,以支持前列腺癌的血统可塑性
Nakisa Tabrizian1, Shaghayegh Nouruzi1, Cassandra Jingjing Cui1
1Department of Urologic Sciences, The University of British Columbia, Vancouver, BC V5Z 1M9, Canada; Vancouver Prostate Centre, Vancouver, BC V6H 3Z6, Canada.
Cell reports
|August 8, 2023
概括
雄激素受体 (AR) 途径抑制剂可以通过血统可塑性引起前列腺癌复发. 研究人员发现,ROR2激活通过促进干细胞类网络来驱动这种抵抗,这表明ROR2是治疗点.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 癌症研究 癌症研究
背景情况:
- 血统可塑性是癌症治疗诱导的耐药性的关键机制.
- 用雄激素受体 (AR) 途径抑制剂治疗的前列腺癌可能会由于AR信号的丧失和转移到另一个细胞程序而复发.
- 在AR向治疗压力下的精确分子机制驱动谱系可塑性仍然不完全理解.
研究的目的:
- 研究分子信号通路,特别是受体氨酸激酶 (RTKs),参与在前列腺癌的AR向治疗期间驱动血统可塑性.
- 确定可以克服或逆转治疗诱导的血统可塑性和耐药性的新型治疗点.
主要方法:
- 在AR途径抑制的背景下,对受体氨酸激酶 (RTK) 进行了全面的调查.
- 分析的重点是确定与血统可塑性发展相关的高调RTK.
- 机制研究探讨了被确定RTK激活的下游信号通路,包括ERK/CREB和转录因子ASCL1.
主要成果:
- 受体氨酸激酶2 (ROR2) 被确定为AR途径抑制后的顶部上调RTK.
- 发现ROR2激活促进干细胞类和神经元信号网络,有助于谱系可塑性.
- 已经证明,ROR2激活了ERK/CREB信号通路,该通路调节了谱系承诺转录因子ASCL1.1的表达.
结论:
- 在前列腺癌中,ROR2在调解雄激素受体抑制剂诱导的血统可塑性方面发挥着关键作用.
- 向ROR2可能是一种可行的策略,可以逆转塑性表型并重新使瘤对AR途径抑制剂敏感.
- 了解ROR2介导信号提供了克服前列腺癌治疗耐药性的新途径.
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