HDAC6 inhibition induces the failure of mouse early embryonic development

HDAC6 inhibition induces the failure of mouse early embryonic development
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HDAC6抑制导致小鼠早期胚胎发育失败

DOI:
10.1002/jcp.27534
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发表时间:
2018-10
影响因子:
5.6
通讯作者:
Bai Liping
Bai Liping
中科院分区:
生物学2区
文献类型:
--
作者:
Wang Hui;Ling Li;Ai Limei;Bai Liping

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组蛋白去乙酰化酶(HDAC)与许多生物学事件有关。然而,迄今为止,HDAC6在早期胚胎中的作用仍然未知。在目前的研究中,Tubastatin A(TubA)是一种有效的HDAC6抑制剂,用于阻断小鼠胚胎中的HDAC6活性。我们发现,TubA暴露显着减少早期胚胎的囊胚形成。共聚焦显微镜显示,在用HDAC6抑制剂处理的小鼠胚胎中,染色体聚集失败显著增加。此外,HDAC6抑制导致胚胎中活性氧(ROS)的过度产生。此外,我们观察到TubA处理的胚胎中磷酸化γH2AX的积累,表明DNA损伤增加。与此一致,与对照相比,在HDAC6缺陷胚胎中经常检测到囊胚细胞凋亡。总之,我们的数据表明,HDAC6可能作为一个重要的调节染色质结构和线粒体功能,决定了小鼠早期胚胎的发育潜力。
Histone deacetylases (HDACs) have been implicated in numerous biological events. However, to date, the role of HDAC6 in early embryos remains unknown. In the current study, Tubastatin A (TubA), a potent HDAC6 inhibitor, was used to block HDAC6 activity in mouse embryos. We found that TubA exposure significantly reduced the blastocyst formation of early embryos. Confocal microscopy revealed the markedly increased chromosomal congression failure in the mouse embryos treated with the HDAC6 inhibitor. Moreover, the HDAC6 inhibition resulted in the overproduction of reactive oxygen species (ROS) in embryos. In addition, we observed the accumulation of phosphorylated γH2AX in TubA‐treated embryos, indicative of the increased DNA damage. In line with this, cell apoptosis of blastocysts was frequently detected in HDAC6‐deficient embryos compared with their controls. Altogether, our data indicate that HDAC6 may serve as an important regulator of chromatin structure and mitochondrial function, determining the developmental potential of the early embryos of mouse.
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发表时间: 2018-05
期刊: Redox biology
影响因子: 11.4
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