在人类癌症中,C19MC驱动了线粒体的核入侵和介质核分裂
Goodwin G Jinesh1,2, Marian T Smallin1,2, Nino Mtchedlidze1,2
1Department of Molecular Oncology, H. Lee Moffitt Cancer Center & Research Institute, Tampa, FL 33612, USA.
iScience
|November 20, 2024
概括
染色体-19的miRNA集群 (C19MC) 通过阻止细胞分裂来驱动多核化. 这一发现影响了癌症,病毒感染和CRISPR疗法.
科学领域:
- 细胞生物学 细胞生物学
- 遗传学 是一个遗传学.
- 病毒学 病毒学
背景情况:
- 众所周知,染色体-19 miRNA 集群 (C19MC) 在胎盘细胞中限制病毒.
- C19MC和细胞多核的关系以前是未知的.
- 发现C19MC在各种癌症中与变相关的基因共同表达.
研究的目的:
- 阐明C19MC在细胞多核化中的作用.
- 研究C19MC影响细胞分裂的机制.
- 探索C19MC在疾病和治疗中的作用.
主要方法:
- 分析C19MC与变相关基因的共同表达.
- 描述了一种新型的半转化-III过程,涉及同时发生半转化核分裂 (MND) 和细胞运动.
- 人类基因工程 CRISPR 评估 C19MC 对多核化的必要性.
主要成果:
- C19MC促进介质桥接染色体的形成,抑制MND和细胞动力学以产生多核细胞.
- C19MC,CDK1和自促进了货物流入核中的超侵袭性细胞质 (NiC),而Aurora-B调节了流出,共同膨胀了MND进展的NiC.
- 克里斯普尔实验证实,C19MC表达对于NiC驱动的MND和随后的多核化至关重要.
结论:
- 在产生多核细胞的过程中,C19MC通过干扰中介核分裂和细胞运动,起到至关重要的作用.
- 这些发现揭示了一种新的多核化机制,涉及由C19MC和其他因素调节的NiC膨胀.
- 这项研究对理解癌症-病原体相互作用,免疫疗法,病毒传播和基于SpCas9-CRISPR的治疗方法具有重大意义.
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