PMID- 17505982 OWN - NLM STAT- MEDLINE DCOM- 20070712 LR - 20181113 IS - 1355-0284 (Print) IS - 1355-0284 (Linking) VI - 13 IP - 2 DP - 2007 Apr TI - A protein encoded by the bovine herpesvirus 1 open reading frame E gene induces neurite-like morphological changes in mouse neuroblastoma cells and is expressed in trigeminal ganglionic neurons. PG - 139-49 AB - Bovine herpes virus 1 (BHV-1), like other alpha-herpesvirinae subfamily members, establishes latency in sensory neurons. Periodically BHV-1 reactivates from latency, resulting in virus shedding and spread to uninfected cattle. Although reactivation from latency does not usually lead to recurrent disease, the latency-reactivation cycle is crucial for virus transmission. The latency-related (LR) RNA is abundantly expressed during latency, and expression of a LR encoded protein is necessary for dexamethasone-induced reactivation from latency in cattle. Within LR promoter sequences, a small open reading frame (ORF) was identified (ORF-E) that is antisense to the LR-RNA, and downstream of the bICP0 gene. ORF-E transcription is consistently detected in trigeminal ganglia (TG) of latently infected calves, suggesting ORF-E expression plays a role in the latency-reactivation cycle. Polyclonal antiserum directed against an ORF-E peptide or the entire ORF-E protein specifically recognizes the nucleus of sensory neurons in TG of latently infected calves. The ORF-E peptide-specific antiserum also recognizes a protein when mouse neuroblastoma cells (neuro-2A) are transfected with an ORF-E expression construct. In contrast to the growth inhibiting properties of the LR gene, stably transfected ORF-E-expressing cells were obtained. Neuro-2A cells stably transfected with a plasmid expressing ORF-E induced morphological changes that resembled neurite-like projections. In contrast, neurite-like projections were not observed following transfection of neuro-2A cells with an empty vector. These studies suggest that a protein encoded by ORF-E has the potential to alter the physiology or metabolism of neuronal cell types, which may be important for long-term latency. FAU - Perez, Sandra AU - Perez S AD - Department of Veterinary and Biomedical Sciences, University of Nebraska, Lincoln, Nebraska 68583-0905, USA. FAU - Meyer, Florencia AU - Meyer F FAU - Henderson, Gail AU - Henderson G FAU - Jiang, Yunquan AU - Jiang Y FAU - Sherman, Simon AU - Sherman S FAU - Doster, Alan AU - Doster A FAU - Inman, Melissa AU - Inman M FAU - Jones, Clinton AU - Jones C LA - eng GR - P20RR15635/RR/NCRR NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, U.S. Gov't, Non-P.H.S. PL - United States TA - J Neurovirol JT - Journal of neurovirology JID - 9508123 RN - 0 (Viral Fusion Proteins) RN - 0 (Viral Proteins) SB - IM MH - Amino Acid Sequence MH - Animals MH - Cattle MH - Cattle Diseases/pathology/*virology MH - Cell Line MH - Herpesviridae Infections/pathology/*veterinary/virology MH - *Herpesvirus 1, Bovine/chemistry/physiology MH - Immunohistochemistry MH - Mice MH - Molecular Sequence Data MH - Neurites/*pathology MH - Open Reading Frames/physiology MH - Transfection MH - Trigeminal Ganglion/*metabolism MH - Viral Fusion Proteins/*physiology MH - Viral Proteins/*physiology MH - Virus Latency EDAT- 2007/05/17 09:00 MHDA- 2007/07/13 09:00 CRDT- 2007/05/17 09:00 PHST- 2007/05/17 09:00 [pubmed] PHST- 2007/07/13 09:00 [medline] PHST- 2007/05/17 09:00 [entrez] AID - 778724457 [pii] AID - 10.1080/13550280701191459 [doi] PST - ppublish SO - J Neurovirol. 2007 Apr;13(2):139-49. doi: 10.1080/13550280701191459.