XPO1突变识别早期的CLL,其特点是较短的时间到第一次治疗和增强的BCR信号传递
Riccardo Moia1, Lodovico Terzi di Bergamo2,3,4, Donatella Talotta1
1Division of Hematology, Department of Translational Medicine, Università del Piemonte Orientale, Novara, Italy.
British journal of haematology
|August 15, 2023
概括
慢性淋巴细胞白血病 (CLL) 中的XPO1突变改变了基因的可访问性和表达,特别是在参与B细胞受体信号传递的基因中. 这些突变预测,在早期的CLL患者中,治疗时间更短.
科学领域:
- 在瘤学瘤学.
- 分子生物学分子生物学
- 遗传学 遗传学 是一个
背景情况:
- 慢性淋巴细胞白血病 (CLL) 是一种异质的B细胞恶性瘤.
- 了解CLL进展的分子驱动因素对于改善患者的治疗结果至关重要.
- 在CLL病原和临床过程中XPO1突变的作用需要进一步阐明.
研究的目的:
- 调查XPO1突变的CLL的表观基因组和转录基因组概况.
- 为了将XPO1突变与临床表型和早期CLL治疗结果相关联.
- 确定可能的分子机制,将XPO1突变与CLL进展联系起来.
主要方法:
- 使用ATAC-seq.进行染色体可访问性分析.
- 使用RNA-seq. 的转录基因分析.
- 下一代测序用于957名早期CLL患者的突变鉴定.
主要成果:
- XPO1突变的CLL在B细胞受体 (BCR) 信号相关转录因子的部位上表现出增加的染色质可访问性.
- 在XPO1突变的CLL中观察到MIR155HG和MYB的升级,促进者可访问性增加.
- XPO1突变被确定为一种新的,独立的预测器,可以在早期的CLL中预测到首次治疗的时间更短 (TTFT).
结论:
- XPO1突变与CLL中独特的表观基因组和转录基因组特征有关,有利于BCR信号传递.
- 在早期的CLL中,XPO1突变作为较短TTFT的显著预后生物标志物.
- 增加的miR-155水平,可能由XPO1突变驱动,可能有助于增强BCR信号和CLL扩散.
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