Dipartimento di Salute Animale, Sezione di Malattie Infettive degli Animali, Università di Parma, Via del Taglio 10, 43100 Parma, Italy.
Virol J. 2010 Sep 21;7:246. doi: 10.1186/1743-422X-7-246.
Persistent infection of macrophages with bovine herpesvirus 4 (BoHV-4) has been proposed to play a secondary causal role, along with bacterial infection, in bovine post-partum metritis. Mechanisms of maintenance of BoHV-4 persistent infection are not understood. We previously generated in vitro models of BoHV-4 persistent infection in human rhadomyosarcoma and bovine macrophage cell lines by drug selection of cells infected with BoHV-4 carrying a drug-resistance marker, and demonstrated circular episomal BoHV-4 genomes. In the present study, we used fluorescent in situ hybridization (FISH) to demonstrate BoHV-4 genomes also integrated into the genomes of these persistently infected cells.
牛疱疹病毒 4 型(BoHV-4)持续感染巨噬细胞,与细菌感染一起,被认为在奶牛产后子宫内膜炎中起次要因果作用。BoHV-4 持续感染的维持机制尚不清楚。我们之前通过携带耐药标记的 BoHV-4 感染细胞的药物选择,在人横纹肌肉瘤和牛巨噬细胞系中建立了 BoHV-4 持续感染的体外模型,并证明了环状附加体 BoHV-4 基因组。在本研究中,我们使用荧光原位杂交(FISH)证明 BoHV-4 基因组也整合到这些持续感染细胞的基因组中。