头杆菌的抗增殖活性:克服化学抵抗
Vladimir Yong-Gonzalez1,2, Constantin Radu1,3, Paul A Calder1,4
1HTS Core Facility - Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA.
Combinatorial chemistry & high throughput screening
|October 24, 2024
概括
荷莫哈林顿因 (HHT) 和其衍生物对白血病细胞表现出强烈的活性,克服多药性耐药性 (MDR1). 这些发现支持对HHT用于治疗急性髓性白血病 (AML) 和其他癌症的临床评估.
科学领域:
- 药理学 药理学是指药理学的学科.
- 在瘤学瘤学.
- 自然产品 化学 化学
背景情况:
- 奥马西塔克辛是一种荷莫哈林通因 (HHT) 衍生物,已被批准用于慢性髓性白血病 (CML).
- 之前的研究表明,HHT及其衍生物 (DHT,DHHT,BDHT) 对过度表达HL-60/RV+细胞的P-糖蛋白1 (MDR1) 具有耐火活性.
研究的目的:
- 调查MDR1介导的对HHT及其衍生物的耐药性程度.
- 评估HHT及其衍生物与白血病患者衍生的原始细胞小组的疗效.
主要方法:
- 利用一组已建立的细胞系和21个来自白血病患者的原始细胞.
- 评估细胞对HHT,DHT,DHHT和BDHT的敏感性.
- 研究了由HHT和DHHT诱导的细胞死亡机制.
主要成果:
- 在过度表达MDR1.1的K562衍生细胞中观察到对HHT的持续耐药性.
- DHT,DHHT和BDHT通过克服MDR1流量表现出有效性.
- 白血病原始细胞对HHT及其衍生物 (低纳米分子强度) 具有高度敏感性.
- 由HHT和DHHT诱导的细胞死亡是由caspase 3裂变调解的,这表明细胞亡.
结论:
- 证实HHT是MDR1.1的基质.
- HHT及其衍生物在急性髓性白血病 (AML) 和其他癌症中显示出临床评估的前景.
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