The varicella-zoster virus immediate early protein, IE62, can positively regulate its cognate promoter.

The varicella-zoster virus immediate early protein, IE62, can positively regulate its cognate promoter.
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水痘带状疱疹病毒立即早期蛋白 IE62 可以正向调节其同源启动子。

DOI:
10.1016/0042-6822(92)90197-w
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发表时间:
1992
期刊:
影响因子:
3.7
通讯作者:
John Hay
John Hay
中科院分区:
医学3区
文献类型:
--
作者:
L. Perera;J. Mosca;Majid Sadeghizadeh;W. Ruyechan;John Hay

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水痘-带状疱疹病毒(Varicella-Zoster virus,VZV)是一种嗜神经性的α疱疹病毒,与单纯疱疹病毒(HSV)关系密切。然而,与其近亲HSV不同,VZV缺乏功能性α-TIF(α-基因转诱导因子),该因子在病毒生命周期的初始事件期间激活立即早期基因的转录。因此,在缺乏功能性α-TIF的情况下,触发VZV中立即早期基因表达的机制目前仍不清楚。越来越多的证据表明,推定的立即早期基因ORF 62(IE 62)的基因产物在激活所有三种推定的动力学类别的VZV基因(即立即早期(α)、早期(β)和晚期(γ)类别的VZV基因)中起关键作用。在本研究中,我们表明,IE62可以积极自动调节其同源启动子使用瞬时转染试验,在淋巴细胞和神经细胞。在相同的系统中,我们还可以证明VZV IE62启动子被HSV ICP 4激活。通过缺失分析和寡核苷酸定点突变,我们在IE62启动子/上游序列中定位了介导IE62和HSV ICP 4诱导的特定区域,并提供证据表明这两种蛋白的启动子激活可能是通过不同的机制。这些数据与最近证实的IE62存在于VZ病毒体被膜(Kinchington,P.R.,霍格兰,J.K.,阿尔文,A. M.,Ruyechan,W. T.,和Hay,J.1992.J.Virol.66,359-366)提供了一种可能的机制,通过该机制,在不存在功能性α-TIF蛋白的情况下发生VZV基因表达的触发。
Varicella-Zoster virus (VZV) is a neurotropic alphaherpes virus closely related to herpes simplex virus (HSV). However, unlike its close relative HSV, VZV lacks a functional α-TIF (α-gene transinducing factor) that activates the transcription of immediate early genes during the initial events of the virus life cycle. Hence, in the absence of a functional α-TIF, the mechanism triggering the expression of immediate early genes in VZV at present remains unclear. Accumulating evidence indicates that the gene product of the putative immediate early gene ORF62 (IE62) plays a pivotal role in activating VZV genes of all three putative kinetic classes, namely immediate early (α), early (β), and late (γ) classes of VZV genes. In the present study, we show that IE62 can positively autoregulate its cognate promoter using a transient transfection assay, both in lymphocytes and in neural cells. In the same system, we can also demonstrate activation of the VZV IE62 promoter by HSV ICP4. By deletion analysis and oligonucleotide-directed site-specific mutagenesis we have localized specific regions in the IE62 promoter/upstream sequences that mediate inducibility by IE62 and HSV ICP4, and provide evidence that this promoter activation by these two proteins may be through different mechanisms. These data, taken together with the recent demonstration of the presence of IE62 in the VZ virion tegument (Kinchington, P. R., Hoagland, J. K., Arvin, A. M., Ruyechan, W. T., and Hay, J. 1992.J. Virol.66, 359–366) provides a possible mechanism by which the triggering of VZV gene expression occurs in the absence of a functional α-TIF protein.
单纯疱疹病毒基因表达的协调调节是由两个早期基因产物的功能相互作用介导的。
DOI: 10.1016/0022-2836(86)90135-x
发表时间: 1986
影响因子: 5.6
作者:
Gelman,IH;Silverstein,S
通讯作者: Silverstein,S
水痘带状疱疹病毒的早期蛋白质。
DOI: 10.1016/0042-6822(87)90423-5
发表时间: 1987
期刊: Virology
影响因子: 3.7
作者:
Shiraki,K;Hyman,RW
通讯作者: Hyman,RW
DOI: 10.1093/nar/14.15.6067
发表时间: 1986-08-11
影响因子: 14.9
作者:
FABER, SW;WILCOX, KW
通讯作者: WILCOX, KW
一种改进的丝状辅助噬菌体,用于产生单链质粒 DNA。
DOI: 10.1016/0378-1119(86)90032-6
发表时间: 1986
期刊: Gene
影响因子: 3.5
作者:
Russel,M;Kidd,S;Kelley,MR
通讯作者: Kelley,MR