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在患有复发儿科B细胞急性淋巴细胞白血病的患者中,3D染色质景观的克隆演变

Sonali Narang¹, Yohana Ghebrechristos^1,2, Nikki A Evensen¹

¹Perlmutter Cancer Center, NYU Langone Health, New York, NY, USA.

Nature communications

|August 28, 2024

概括

儿童B细胞急性淋巴细胞白血病 (B-ALL) 复发是致命的. 这项研究揭示了复发期间的动态结构变化和3D染色质重新连接,确定了新的治疗点,如ATXN1和MN1.

科学领域:

基因组学就是基因组学.
癌症生物学癌症生物学
表观遗传学在表观遗传学中,表观遗传学是指表观遗传学.

背景情况:

复发的儿科B细胞急性淋巴细胞白血病 (B-ALL) 是儿童癌症死亡的主要原因.
了解导致复发的分子机制对于开发有效疗法至关重要.

研究的目的:

调查儿科B-ALL复发中的动态结构变异 (SVs) 和3D染色质变异.
通过分析全基因组染色体重塑来确定新的治疗点.

主要方法:

在匹配的诊断/复发儿科白血病样本上利用了Hi-C,ATAC-seq和RNA-seq.
分析了结构变异,融合转录和全基因组染色体组织 (A/B区,TAD,循环).

主要成果:

发现了新的动态转位和确认的融合转录,具有潜在的治疗意义.
在复发期间观察到多个组织层面的全基因组染色质重塑.
确定了驱动抗性的共享基因组变化,并精确确定了功能验证的新疗法候选者 (ATXN1,MN1).

结论:

治疗诱导显著的染色质重组在复发的儿科B-ALL.
这些发现突显了发现针对B-ALL复发中的染色质动态的新型治疗干预措施的潜力.

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