3D环境控制了H3K4甲基化和急性淋巴细胞白血病细胞核的机械反应
Raquel González-Novo1, Ana de Lope-Planelles1, María Pilar Cruz Rodríguez1
1Department of Molecular Medicine, Centro de Investigaciones Biológicas Margarita Salas (CIB Margarita Salas-CSIC), Madrid, Spain.
European journal of cell biology
|July 26, 2023
概括
向WDR5通过改变3D环境中的核力学来降低H3K4甲基化和儿科急性淋巴细胞白血病 (ALL) 的侵入性. 这为ALL提供了潜在的治疗策略.
科学领域:
- 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.
- 细胞力学 细胞力学
背景情况:
- 急性淋巴细胞白血病 (ALL) 是一种常见的儿科癌症,其中细胞透驱动进展和复发.
- 核变形性对癌细胞入侵至关重要,但白血病细胞核力学中的表观遗传变化的作用尚不清楚.
研究的目的:
- 研究3D原基质条件如何影响ALL细胞中的H3K4甲基化.
- 确定向WDR5,一个关键的H3K4甲基转移酶,对ALL细胞侵入性和核性质的影响.
主要方法:
- 在3D原基质条件下,在ALL细胞系和临床样本中对H3K4甲基化的表征.
- 使用了shRNA和化学抑制剂来准WDR5.5.
- 在实验室和体内,评估了ALL细胞的侵入性,以及粘附和化学反应.
- 进行生物化学和生物物理实验,分析色素,核形态和机械行为.
主要成果:
- 3D原基质条件诱导了ALL细胞中的H3K4甲基化.
- 向WDR5降低了3D诱导的H3K4甲基化,并降低了ALL细胞的侵入性,无论是体外还是体内.
- 抑制WDR5并没有影响ALL细胞粘附或化学反应,这表明它在入侵中发挥了特定的作用.
- 3D环境改变了所有细胞的染色质,核形态和机械性质.
结论:
- 3D环境对ALL细胞中的H3K4甲基化进行上调,影响核特性并促进侵入性.
- 向WDR5成为一种潜在的治疗策略,以抑制ALL细胞的侵入性.
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