紫禁素与细胞周期,运动性和前列腺癌细胞的入侵有关
Sarah Koushyar1, Pinar Uysal-Onganer2, Wen Guo Jiang1
1Cardiff China Medical Research Collaborative, School of Medicine, Cardiff University, Cardiff CF14 4YS, UK.
International journal of molecular sciences
|June 28, 2023
概括
禁素 (PHB) 通过抑制雄激素受体 (AR),E2F和WNT信号通路作为瘤抑制剂起作用. 前列腺癌中PHB表达的丧失与转移和WNT通路激活的增加有关.
科学领域:
- 分子生物学分子生物学
- 癌症研究 癌症研究
- 遗传学 是一个遗传学.
背景情况:
- 禁素 (PHB) 是一种已知的瘤抑制基因,参与各种细胞过程.
- PHB在前列腺癌中的作用,特别是它与雄激素受体 (AR) 和细胞循环调节器 (如E2F) 的相互作用,是复杂的,需要进一步研究.
- PHB的失调与癌症进展有关,但其在前列腺癌转移中的特定分子机制尚未完全阐明.
研究的目的:
- 调查Prohibitin (PHB) 影响前列腺癌细胞行为的分子机制,包括增殖,迁移和入侵.
- 阐明PHB,雄激素受体 (AR),E2F家族成员和前列腺癌中的WNT信号之间的相互作用.
- 确定PHB表达水平与转移性前列腺癌的临床结果之间的相关性.
主要方法:
- 在LNCaP前列腺癌细胞中利用了包括细胞周期分析 (G1/S相停止),基因沉默 (siRNA) 和异位基因表达 (cDNA) 在内的体外试验.
- 研究蛋白质-蛋白质相互作用和基因表达变化,使用基因本体学分析等技术.
- 从临床前列腺癌样本中分析了公开可用的基因表达数据 (GEO).
- 进行了伤口愈合和Matrigel入侵检测,以评估细胞移动性和侵入性.
主要成果:
- 在前列腺癌细胞中,PHB过度表达诱导了G1/S阶段细胞周期停止,并抑制了AR和E2F活性.
- PHB knockdown (siRNA) 增加了小鼠异种移植中的瘤生长和转移,而PHB过度表达减少了细胞迁移,入侵和附着.
- 基因本体学分析显示PHB调节细胞周期,WNT家族成员 (WNT7B,WNT9A,WNT10B) 和细胞粘附通路.
- 临床数据显示在转移性前列腺癌中PHB表达减少,WNT表达增加.
- 雄激素信号影响了WNT基因表达,但WNT也受到细胞周期的强烈调节,PHB损失促进了WNT的表达.
结论:
- 通过抑制AR,E2F和WNT信号通路,PHB作为前列腺癌进展的关键抑制剂.
- 失去PHB功能有助于增加前列腺癌的转移潜力,可能是通过WNT信号的上调和细胞周期失调.
- 复杂的AR:PHB:E2F:WNT相互作用轴代表了管理前列腺癌转移的潜在治疗目标.
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