Importance of the intracytoplasmic domain of the simian immunodeficiency virus (SIV) envelope glycoprotein for pathogenesis.

Importance of the intracytoplasmic domain of the simian immunodeficiency virus (SIV) envelope glycoprotein for pathogenesis.
复制标题

猿猴免疫缺陷病毒(SIV)包膜糖蛋白的胞浆内结构域对于发病机制的重要性。

DOI:
10.1006/viro.1998.9467
复制
发表时间:
1998
期刊:
影响因子:
3.7
通讯作者:
Marthas,ML
Marthas,ML
中科院分区:
医学3区
文献类型:
--
作者:
Luciw,PA;Shaw,KE;Shacklett,BL;Marthas,ML

文献摘要

参考文献

被引文献

相似文献

SIVmac 1A 11和SIVmac 239分别是恒河猴的非致病性和致病性分子克隆。虽然这些病毒表现出约98%的核苷酸和氨基酸序列同源性,但在几个基因的翻译框架长度上存在差异。SIVmac 239在nef中有一个提前终止密码子,而SIVmac 1A 11在env-跨膜(TM)亚基的胞质内结构域中有一个提前终止密码子inv pron和两个提前终止密码子。通过SIVmac 1A 11和SIVmac 239之间的大DNA限制性内切酶片段的相互交换构建的重组病毒在成年恒河猴中进行了评价。这种体内分析揭示了SIVmac基因组的两个或更多个区域对于高病毒载量和疾病进展是必需的(Marthaset al.,1993.J.Virol.67,6047-6055)。本研究中存在的一个重要知识空白是重组病毒SIV 1A 11/239 gag-env/1A 11的提前终止密码子inenv-TM(全长vprandnef,两个终止密码子inenv-TM)是否在体内恢复为编码三联体。在这里,我们报告,在感染SIV 1A 11/239 gag-env/1A 11后死于艾滋病样疾病的猕猴中,病毒序列表现出bothenv-TM终止密码子的逆转。此外,在含有回复突变病毒并显示疾病的猕猴中检测到env-TM胞浆内结构域的抗体;这一发现表明env糖蛋白的该结构域在体内表达。因此,选择具有全长env-TM的病毒变体证明SIVmacenv糖蛋白的胞质结构域在灵长类动物中的病毒持久性和免疫缺陷中起作用。
SIVmac1A11 and SIVmac239 are nonpathogenic and pathogenic molecular clones in rhesus macaques, respectively. Although these viruses exhibit ∼98% nucleotide and amino acid sequence homology, differences are found in the length of the translation frames for several genes. SIVmac239 has a premature stop codon innef, whereas SIVmac1A11 has a premature stop codon invprand two premature stop codons in the intracytoplasmic domain of theenv-transmembrane (TM) subunit. Recombinant viruses, constructed through reciprocal exchange of large DNA restriction enzyme fragments between SIVmac1A11 and SIVmac239, were evaluated in adult rhesus macaques. Thisin vivoanalysis revealed that two or more regions of the SIVmac genome were essential for high virus load and disease progression (Marthaset al.,1993.J. Virol.67, 6047–6055). An important gap in knowledge remaining from this study was whether the premature stop codons inenv-TM of recombinant virus SIV1A11/239gag-env/1A11 (full-lengthvprandnef, two stop codons inenv-TM) reverted to coding tripletsin vivo. Here, we report that viral sequences in macaques, which succumbed to an AIDS-like disease after infection with SIV1A11/239gag-env/1A11, exhibited reversion of bothenv-TM stop codons. In addition, antibodies to the intracytoplasmic domain ofenv-TM were detected in macaques containing revertant virus and showing disease; this finding indicates that this domain of theenvglycoprotein was expressedin vivo. Thus selection for viral variants with full-lengthenv-TM demonstrated that the cytoplasmic domain of the SIVmacenvglycoprotein plays a role in viral persistence and immunodeficiency in primates.
慢病毒中包膜糖蛋白的保守框架。
DOI: --
发表时间: 1994
影响因子: --
作者:
G. Pancino;H. Ellerbrok;M. Sitbon;P. Sonigo
通讯作者: P. Sonigo
DOI: 10.1128/jvi.63.10.4395-4403.1989
发表时间: 1989-10-01
影响因子: 5.4
作者:
CHAKRABARTI, L;EMERMAN, M;SONIGO, P
通讯作者: SONIGO, P
与人类免疫缺陷病毒 1 型包膜糖蛋白的两亲性螺旋片段相对应的合成肽的膜相互作用。
DOI: --
发表时间: 1992
期刊: The Journal of biological chemistry
影响因子: --
作者:
Srinivas,SK;Srinivas,RV;Anantharamaiah,GM;Segrest,JP;Compans,RW
通讯作者: Compans,RW
DOI: 10.1089/aid.1989.5.7
发表时间: 1989
影响因子: 1.5
作者:
Venable,RM;Pastor,RW;Brooks,BR;Carson,FW
通讯作者: Carson,FW
DOI: 10.1128/jvi.72.8.6574-6580.1998
发表时间: 1998-08-01
影响因子: 5.4
作者:
Ishikawa, H;Sasaki, M;Koga, Y
通讯作者: Koga, Y