Autocrine role of macrophage inflammatory protein-1 beta in human T-cell lymphotropic virus type-I tax-transfected Jurkat T-cells.
The interaction of human T-cell lymphotropic virus I (HTLV-I) tax gene with host cell factors plays an important role in the maintenance of the transformed state. There have been numerous reports that have demonstrated the role of tax in transactivating several cytokines. In this study, we show that upon mitogen stimulation, macrophage inflammatory protein-1 beta (MIP-1beta) is expressed and secreted in tax-transfected Jurkat cells. Furthermore, expression of CC-chemokine receptor-5 (CCR5) mRNA in these cells suggests an autocrine role for MIP-1beta in HTLV-I-infected T-cells. These results, coupled with our earlier observations, demonstrate the influence that extracellular Tax protein might have on modulating host chemokines for proliferation and transformation of uninfected cells.
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Laboratory of Cytokine Research, University of West Florida, Pensacola, FL 32514-5751, USA. vsharma@uwf.edu
Lorey
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D019898:Autocrine Communication / Q000502:physiology*; D054407:Chemokine CCL4; D004797:Enzyme-Linked Immunosorbent Assay; D016356:Gene Products, tax / Q000378:metabolism; D016355:Genes, pX; D015368:Human T-lymphotropic virus 1 / Q000235:genetics*; D006801:Humans; D019169:Jurkat Cells; D008213:Lymphocyte Activation; D019402:Macrophage Inflammatory Proteins / Q000235:genetics / Q000378:metabolism*; D010835:Phytohemagglutinins / Q000494:pharmacology; D019713:Receptors, CCR5 / Q000235:genetics / Q000378:metabolism; D013601:T-Lymphocytes / Q000378:metabolism*; D013755:Tetradecanoylphorbol Acetate / Q000494:pharmacology; D014162:Transfection
D054407:Chemokine CCL4; D016356:Gene Products, tax; D019402:Macrophage Inflammatory Proteins; D010835:Phytohemagglutinins; D019713:Receptors, CCR5; D013755:Tetradecanoylphorbol Acetate