在T细胞急性淋巴细胞白血病中针对NOTCH1和内滴化通路的治疗向
Kalay Bertulfo1,2, Pablo Perez-Duran1, Hannah Miller1
1Institute for Cancer Genetics, Columbia University, New York, NY 10032.
概括
玛分泌酶抑制剂 (Gamma Secretase Inhibitors,GSI) 通过阻断NOTCH1.1,治疗T细胞急性淋巴细胞白血病 (T-ALL). 将GSI与MLN4924结合起来可以预防肠道毒性,并改善T-ALL模型中的存活率.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 胃肠病学 胃肠病学
背景情况:
- 玛分泌酶抑制剂 (GSIs) 在T细胞急性淋巴细胞白血病 (T-ALL) 中向致癌性NOTCH1.
- 由于肠道中NOTCH信号抑制,导致杯状细胞分化,GSI的临床使用受到胃肠道毒性限制.
- 在NOTCH1抑制后,研究了基化途径在杯状细胞分化中的作用.
研究的目的:
- 为了确定在NOTCH1抑制过程中调节杯细胞分化的机制.
- 为了评估结合NOTCH1和化途径抑制用于T-ALL治疗的治疗潜力.
主要方法:
- 在LS174T结肠癌细胞中全基因 CRISPR 功能丧失屏幕.
- 使用MLN4924的药理抑制化途径.
- 毛发和增强分裂-1蛋白稳定性的评估.
- 在小鼠T-ALL模型中对GSI和MLN4924联合治疗的评估.
主要成果:
- 在NOTCH1抑制后,内滴化途径被确定为杯状细胞分化的关键调节者.
- 在体外,MLN4924治疗挽救了GSI诱导的杯状细胞分化.
- MLN4924增加了毛的稳定性,并增强了分裂-1的增强剂,NOTCH1的目标.
- 结合GSI和MLN4924治疗导致白血病回归,并改善了没有肠道毒性的小鼠的生存率.
结论:
- 向化途径可以减轻GSI诱导的胃肠道毒性.
- 联合抑制NOTCH1和化通路为T-ALL.提供了一个有前途的治疗策略.
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