ASP210:一种强大的基于寡核酸的抑制剂,有效对抗TCI耐药CML细胞
Veronika Nemethova1,2, Petra Babiakova1, Boglarka Teglasova1
1Selecta Biotech SE, Bratislava, Slovakia.
American journal of physiology. Cell physiology
|June 3, 2024
概括
一种新型的寡核酸,ASP210,有效地降低了TCI耐药慢性骨髓性白血病 (CML) 细胞中的BCR-ABL1mRNA,诱导了亡. 这种有前途的疗法准了耐药性CML细胞,同时保留了健康细胞.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 氨酸激酶抑制剂 (TKIs) 是慢性骨髓性白血病 (CML) 的标准治疗方法.
- 显著的患者群体对TCI产生初级或获得性耐药性,需要替代治疗.
- 逃脱TKI治疗的白血病克隆在CML管理中构成了挑战.
研究的目的:
- 研究一种新型寡核酸ASP210对抗TCI耐药CML细胞的疗效.
- 评估ASP210降低BCR-ABL1mRNA水平并诱导抗性CML的亡的能力.
- 在临床前模型中评估ASP210的安全性和选择性.
主要方法:
- 已确立的BCR-ABL1阳性MOLM-7和CML-T1细胞的意马替尼布和达萨替尼布耐药子线.
- 用ASP210 (0.25和2.5μM) 治疗耐药细胞10天.
- 使用RT-qPCR量化BCR-ABL1mRNA水平,并通过试蓝色染色监测细胞活力.
主要成果:
- 在一次应用后,ASP210显著降低了BCR-ABL1mRNA水平超过99%.
- 不管是T315I突变,TKI耐药CML细胞在再给药后的第5天经历了细胞亡,不论是T315I突变.
- ASP210对癌细胞具有选择性毒性,这表明它具有良好的安全性.
结论:
- ASP210是一种强大的寡核酸治疗候选者,用于TKI抗性CML.
- 它在耐药细胞中诱导亡的能力,包括那些具有T315I突变的细胞,提供了一个新的治疗途径.
- 药物的选择性作用和低剂量疗效的潜力需要进一步的临床研究.
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