通过PML-NBs调节JC病毒的原原基因调节基因组修饰酶:VLP表达细胞中的转录组学
Yukiko Shishido-Hara1, Takeshi Yaoi2
1Department of Diagnostic Pathology, Kindai University Hospital, Osaka-Sayama 589-8511, Japan.
Viruses
|October 29, 2025
概括
冠状病毒 (JCV) 诱导基因影响质细胞内的表观遗传调节,影响细胞周期控制. 这发生在前细胞性白血病核体 (PML-NBs) 中,在类似病毒的粒子组装过程中.
科学领域:
- 神经病毒学 神经病毒学
- 分子生物学分子生物学
- 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:
- 结核病病毒 (JCV) 感染质细胞,导致渐进的多焦点白血脑病.
- 简型冠状病毒具有双链DNA基因组,具有早期和晚期编码区域以及控制区域.
- 体蛋白质在前细胞性白血病核体 (PML-NBs) 内组装成病毒样颗粒 (VLPs).
研究的目的:
- 为了研究JCV激原基因的功能.
- 确定agonogen在VLP形成中的作用及其对宿主细胞基因表达的影响.
- 探索激原基因对表观遗传调节和细胞周期控制的影响.
主要方法:
- 细胞培养系统用于VLP形成,具有和没有agonogen.
- 微阵列分析用于差异性基因表达.
- 对基因组修饰酶,激酶和酸酶的分析.
- 对感染了JCV的人类大脑组织的检查.
主要成果:
- 简型冠状病毒抗原显著改变了基因组修饰酶 (EHMT1,PRMT7,KDM2B,KDM5C,KDM6B) 和激酶/酸酶的表达.
- 参与RNA聚合酶II调节的CTDP1也被差异表达.
- 基因表达的变化在异基因存在时更加明显.
- 人类大脑组织中感染JCV的质细胞保持了双胞胎染色体补充,表明G2停止.
结论:
- 型冠状病毒病原体可能会影响与PML-NBs相关的表观遗传调节.
- 这种表观遗传调节可能会影响受感染的质细胞中的细胞周期控制.
- 在感染了JCV的细胞中,G2停止的确切机制需要进一步阐明.
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