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Transcriptional regulation of the Herpes Simplex Virus 1α-gene by the viral immediate-early protein ICP22 in association with VP16

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Abstract

Herpes Simplex Virus 1 (HSV1) is capable of inducing two forms of infection in individuals, and the establishment of which type of infection occurs is linked to the transcriptional activation of viral α genes. One of the HSV1 α genes, ICP22, is known to have multiple functions during virus replication, but its distinct roles are still unclear. This study showed that ICP22 functions as a general repressor for certain viral and cellular promoters, and this transcriptional repression by ICP22 is independent of the specific upstream promoter element, as shown using the CAT enzyme assay system. Further work also found that VP16 interfered with ICP22 mediated transcriptional repression of the viral α4 gene, through interactions with specific elements upstream of the α4 gene promoter. These findings support the possibility that ICP22 and VP16 control transcription of HSV1α genes in a common pathway for the establishment of either viral lytic or latent infections.

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Authors and Affiliations

  1. Institute of Medical Biology, Chinese Academy of Medical Sciences and Peking Union Medical College, Kunming, 650118, China

    Wei Cun, Lei Guo, Ying Zhang, LongDing Liu, LiChun Wang, JianFeng Li, ChengHong Dong, JinJin Wang & QiHan Li

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  1. Wei Cun
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  2. Lei Guo
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  3. Ying Zhang
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  4. LongDing Liu
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  5. LiChun Wang
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  6. JianFeng Li
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  7. ChengHong Dong
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  8. JinJin Wang
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  9. QiHan Li
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Correspondence to QiHan Li.

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Supported by the National Natural Science Foundation (Grant No. 30570081, 30670094) and Doctoral Fund of Ministry of Education of China (Grant No. 20060023053)

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Cun, W., Guo, L., Zhang, Y. et al. Transcriptional regulation of the Herpes Simplex Virus 1α-gene by the viral immediate-early protein ICP22 in association with VP16. SCI CHINA SER C 52, 344–351 (2009). https://doi.org/10.1007/s11427-009-0051-2

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  • DOI: https://doi.org/10.1007/s11427-009-0051-2

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