circPCMTD1:一种编码蛋白质的圆形RNA,可调节BCR/ABL1阳性白血病中DNA损伤反应
Dimitrios Papaioannou1, Amog P Urs2, Rémi Buisson3
1New York University Langone Medical Center, New York, New York, United States.
Blood
|January 29, 2026
概括
循环RNAcircPCMTD1枯竭通过激活DNA损伤反应通路来抑制白血病细胞的增殖. 向circPCMTD1代表了BCR/ABL1阳性髓性白血病的潜在治疗策略.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 是一个遗传学.
背景情况:
- 循环RNAs (circRNAs) 是健康和疾病中细胞功能的新兴调节者.
- BCR/ABL1阳性髓性白血病的特点是特定的基因转位驱动白血病发生.
研究的目的:
- 研究circPCMTD1在BCR/ABL1阳性髓性白血病中的功能性作用.
- 阐明 circPCMTD1 的功能和其作为治疗点的潜力背后的分子机制.
主要方法:
- circPCMTD1 耗尽使用选实验.
- 用RNA测序和质量细胞测量进行途径分析.
- 基因纤维测定,彗星测定和西方抹杀用于基因毒性压力标志物.
- 在小鼠模型中的体内研究.
- 鉴定和表征circPCMTD1-衍生的 (cPCMTD1-127aa) 和其相互作用.
主要成果:
- circPCMTD1的枯竭显著抑制了白血病细胞的增殖,并诱导了DNA损伤反应 (DDR).
- 向circPCMTD1激活了DDR通路,并在细胞系和患者样本中增加了基因毒性应激.
- 在体内,circPCMTD1敲除在患有BCR/ABL1阳性白血病的小鼠中延长了生存时间.
- circPCMTD1产生一种 (cPCMTD1-127aa),与BCR/ABL1和BTR复合体相互作用,增强DNA修复耐受性.
结论:
- 在BCR/ABL1阳性髓性白血病中,circPCMTD1具有功能相关性.
- circPCMTD1作为白血病细胞存活率和基因组稳定性的关键调节者.
- circPCMTD1及其产物cPCMTD1-127aa代表了这些白血病的潜在治疗脆弱性.
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