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This Article Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Rights and Permissions Citing Articles Citing Articles via HighWire Citing Articles via CrossRef Citing Articles via Google Scholar Google Scholar Articles by An, J. Articles by Rettig, M. B. Search for Related Content PubMed PubMed Citation Articles by An, J. Articles by Rettig, M. B. Related Collections Neoplasia Gene Expression Social Bookmarking                   What's this?  Previous Article  |  Table of Contents  |  Next Article  Blood, 15 January 2002, Vol. 99, No. 2, pp. 649-654 NEOPLASIA The Kaposi sarcoma-associated herpesvirus (KSHV) induces cellular interleukin 6 expression: role of the KSHV latency-associated nuclear antigen and the AP1 response element Jiabin An, Alan K. Lichtenstein, Gregory Brent, and Matthew B. Rettig From the Department of Medicine, VA Greater Los Angeles Healthcare System, and the Department of Medicine, UCLA School of Medicine, Los Angeles, CA. Cellular interleukin 6 (IL-6) is an important growth factor for Kaposi sarcoma- associated herpesvirus (KSHV)-associated neoplasms, which include human immunodeficiency virus (HIV)-related and -unrelated cases of Kaposi sarcoma (KS), primary effusion lymphoma (PEL), and multicentric Castleman disease (MCD). Increased IL-6 levels are found in tissues affected with these diseases, and KSHV exists in a latent state in the majority of virally infected cells. In addition, acute infection with KSHV up-regulates IL-6 expression in endothelial cells. Thus, the hypothesis was considered that a latent KSHV gene product up-regulates IL-6 expression. To evaluate this hypothesis, the KSHV latency-associated nuclear antigen (LANA) was expressed in human embryonal kidney 293 cells and a bone marrow stromal cell line. LANA up-regulates IL-6 expression by inducing transcription from the IL-6 promoter, and the AP1 response element within the IL-6 promoter is necessary for and mediates IL-6 up-regulation by LANA. Thus, LANA may play a key pathophysiologic role in KSHV-associated neoplasms by functioning to up-regulate expression of IL-6. © 2002 by The American Society of Hematology.   CiteULike    Connotea    Del.icio.us    Digg    Reddit    Technorati    What's this? This article has been cited by other articles: S. Sadagopan, N. Sharma-Walia, M. V. Veettil, V. Bottero, R. Levine, R. J. Vart, and B. Chandran Kaposi's Sarcoma-Associated Herpesvirus Upregulates Angiogenin during Infection of Human Dermal Microvascular Endothelial Cells, Which Induces 45S rRNA Synthesis, Antiapoptosis, Cell Proliferation, Migration, and Angiogenesis J. 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