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- W2011358571 abstract "To review our previous studies regarding alterations in gene expression in HSV-1 latently infected mouse trigeminal ganglia (TGs) following treatment with immunosuppressants and hyperthermia.Uninfected and HSV-1 latently infected mice were treated with immunosuppressants or heat stressed (43 degrees C for 10 minutes). In the immunosuppressant study, 4 groups of animals were examined: (1) uninfected, not treated; (2) uninfected, drug-treated; (3) latently infected, not treated; and (4) latently infected, drug-treated. In the hyperthermia study, TG from 6 groups of mice were studied: (1) uninfected, not stressed; (2) uninfected, heat-stressed; killed at 6 hours after hyperthermia; (3) uninfected, heat-stressed, killed at 24 hours after hyperthermia; (4) latently infected, not stressed; (5) latently infected, heat-stressed, killed at 6 hours after hyperthermia; and (6) latently infected, heat-stressed, killed at 24 hours after hyperthermia. PolyA mRNA from the TGs of each group was reverse-transcribed, labeled with P, incubated on a gene array membrane, and analyzed by phosphorimaging. As a comparison and to confirm microarray results, semiquantitative RT-PCR for selected genes was also performed.The immunosuppressive drugs significantly increased expression of two genes--calpactin 1 light chain and guanine nucleotide-binding protein alpha stimulating activity polypeptide (GNAS)--in the ganglia of uninfected mice compared with untreated, uninfected mice. Ten genes were shown to be significantly increased in the latent TGs from mice treated with the immunosuppressants compared with latently infected untreated mice. These genes were prostaglandin E2 receptor EP4 subtype (PTGER4), insulin promoter factor 1 (IPF1), glutathione S-transferase mu2, cyclin D2, peripherin, plasma glutathione peroxidase, methyl CpG-binding protein 2, retinal S-antigen, ErbB2 protooncogene, and GNAS. Eight genes were shown to be significantly decreased in the HSV-1 latent TGs treated with the drugs compared with untreated latent mice. These genes were peripheral myelin protein 22, decorin, transcription factor AP-1, dystroglycan 1, myelin protein zero, mitogen-activated protein kinase 3, prothymosin beta4, and brain lipid-binding protein. The results obtained by semiquantitative RT-PCR results were similar to those obtained by microarray analysis. Six hours after heat stress, the genes whose expression was altered included the FK506-binding protein gene (decreased), the T-complex protein 1alpha subunit gene (increased), and the 94-kDa glucose-regulated protein gene (increased in uninfected TG, decreased in infected TG). Heat stress increased expression of the DNA excision repair protein ERCC5 gene 24 hours after the treatment. Genes previously reported to exhibit increased transcription 1 hour after heat stress did not continue to show significant transcriptional activation at 6 or 24 hours.Those genes whose expression is altered by immunosuppressive drug treatment may play an important role in ocular HSV-1 recurrence. Changes in gene expression in the prostaglandin pathway, a transcription factor, and an enzyme in the cell cycle are considered of special importance for HSV-1 reactivation by immunosuppression. Altered gene expression at 6 and 24 hours after heat stress was different from previously reported changes in gene expression 1 hour after hyperthermia in HSV-1 latently infected mice." @default.
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- W2011358571 date "2004-11-01" @default.
- W2011358571 modified "2023-10-16" @default.
- W2011358571 title "Microarray Analysis in the HSV-1 Latently Infected Mouse Trigeminal Ganglion" @default.
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- W2011358571 doi "https://doi.org/10.1097/01.ico.0000136665.56247.89" @default.
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