miR-200 家族 microRNAs 在上皮细胞和 B 细胞中的差异表达及其家族成员 miR-429 对 Epstein-Barr 病毒再激活的调控
Differential expression of the miR-200 family microRNAs in epithelial and B cells and regulation of Epstein-Barr virus reactivation by the miR-200 family member miR-429.
机构信息
Department of Pathology, SL-79, Tulane Health Sciences Center, New Orleans, Louisiana 70112, USA.
出版信息
J Virol. 2010 Aug;84(15):7892-7. doi: 10.1128/JVI.00379-10. Epub 2010 May 19.
The miR-200 microRNA family is important for maintaining the epithelial phenotype, partially through suppressing ZEB1 and ZEB2. Since ZEB1 inhibits Epstein-Barr virus (EBV) reactivation, we hypothesized that expression of miR-200 family members in epithelial cells may partly account for higher levels of EBV reactivation in this tissue (relative to nonplasma B cells). Here we show that, whereas miR-200 family members are expressed in epithelial cells, their expression is low in latently infected B cells. Furthermore, the miR-200 family member miR-429 shows elevated expression in plasma cell lines and is induced by B-cell-receptor activation in Akata cells. Lastly, expression of miR-429 can break latency.
miR-200 微 RNA 家族对于维持上皮细胞表型非常重要,部分是通过抑制 ZEB1 和 ZEB2。由于 ZEB1 抑制 EBV(Epstein-Barr virus)的再激活,我们假设上皮细胞中 miR-200 家族成员的表达可能部分解释了该组织中 EBV 再激活水平较高的原因(相对于非浆细胞 B 细胞)。在这里,我们发现 miR-200 家族成员在上皮细胞中表达,但在潜伏感染的 B 细胞中表达水平较低。此外,miR-200 家族成员 miR-429 在浆细胞系中表达上调,并在 Akata 细胞中被 B 细胞受体激活诱导。最后,miR-429 的表达可以打破潜伏状态。