Folks T M, Powell D, Lightfoote M, Koenig S, Fauci A S, Benn S, Rabson A, Daugherty D, Gendelman H E, Hoggan M D
J Exp Med. 1986 Jul 1;164(1):280-90. doi: 10.1084/jem.164.1.280.
Leu-3- cells that survive infection with the acquired immune deficiency syndrome (AIDS) retrovirus can be induced with IUdR to express infectious virus. A cellular clone (8E5), isolated by limiting dilution of a mass culture of survivor cells, was found to contain a single, integrated provirus that was constitutively expressed. Although IUdR treatment of 8E5 cells failed to induce infectious virus, cocultivation with Leu-3+ cells generated the characteristic syncytia associated with acute AIDS retrovirus infection. The single integrated copy of proviral DNA directs the synthesis of all major viral structural proteins except p64, as monitored by immunoblotting. The relationship of the 8E5 clone to viral latency and persistence is discussed.
在获得性免疫缺陷综合征(艾滋病)逆转录病毒感染后存活下来的Leu-3-细胞,可用碘脱氧尿苷(IUdR)诱导其表达传染性病毒。通过对存活细胞的大规模培养进行有限稀释分离得到的一个细胞克隆(8E5),被发现含有一个组成型表达的单一整合前病毒。虽然用IUdR处理8E5细胞未能诱导出传染性病毒,但与Leu-3+细胞共培养会产生与急性艾滋病逆转录病毒感染相关的特征性多核巨细胞。通过免疫印迹监测发现,前病毒DNA的单一整合拷贝指导合成除p64之外的所有主要病毒结构蛋白。文中讨论了8E5克隆与病毒潜伏和持续存在的关系。