在瘤中抑制PRMT5的抗瘤作用
Stéphanie Verbeke1,2, Aurélien Bourdon1,2, Jean-Philippe Guegan3
1Sarcoma Unit, Bergonié Institute, Bordeaux, France.
Cancer research communications
|October 20, 2023
概括
向蛋白质氨酸甲基转移酶5 (PRMT5) 显示了软组织肉瘤 (STS) 的治疗潜力. 抑制PRMT5降低了瘤生长和调节癌细胞代谢,这表明它是STS患者的可行的治疗标.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 生物化学 生化学
背景情况:
- 软组织肉瘤 (STS) 对患者来说具有有限的治疗途径.
- 蛋白质氨酸甲基转移酶5 (PRMT5) 是一种已确定的抗癌点,主要研究在上皮瘤中.
- 在STS中PRMT5抑制的作用和治疗潜力在很大程度上仍未被探索.
研究的目的:
- 评估PRMT5表达在STS患者队列中的预后意义.
- 在体外和体内使用选择性化合物GSK3326595 (GSK595) 调查PRMT5抑制的抗瘤作用.
- 阐明PRMT5抑制对STS细胞代谢的潜在机制.
主要方法:
- 在两个STS患者队列中对PRMT5表达的预后价值评估.
- 在STS细胞系上使用GSK595进行体外试验 (MTT,细胞亡,细胞周期,克隆性,增殖).
- 在两种动物模型中进行体内研究,以评估GSK595对瘤生长的影响.
- 作用研究的机制包括RNA测序,代谢途径分析,西部抹杀和葡萄糖吸收/乳酸生产测定.
主要成果:
- 高PRMT5基因表达与STS患者无转移生存率较差相关.
- GSK595治疗减少了STS的扩散,克隆原性和体内瘤生长.
- 抑制PRMT5导致有氧糖解的下调,包括葡萄糖吸收和乳酸盐生产.
结论:
- PRMT5在调节STS细胞代谢方面发挥着至关重要的作用.
- 在STS模型中,PRMT5抑制显示出显著的抗瘤活性.
- PRMT5代表了软组织肉瘤的有前途的治疗标,需要进一步的临床研究.
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