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Mitomycin C stimulates the expression of human immunodeficiency virus long terminal repeat sequences in rat and human
1Institute of Biological Research and Biotechnology, National Hellenic Research Foundation, Athens, Greece.
Abstract:
We have employed a recombinant plasmid, pBHIV1, carrying the long terminal repeat (LTR) sequences of the human immunodeficiency virus-1 (HIV-1) linked to the reporter chloramphenicol acetyl transferase (CAT) gene and to the aminoglycoside phosphotransferase (aph) gene as a selectable marker. We have introduced pBHIV1 into rat 208F and human MRCSV40TGR fibroblasts and obtained stable geneticin resistant RFBHIV1-1 and SVTGHIV1-1 cells, respectively. Both transfectant cells express CAT activity from the HIV LTR promoter. The response to the antineoplastic drug mitomycin C was studied on the LTR regulated CAT activity in both cell lines. It was found that mitomycin C at 10 micrograms/mL concentration stimulates the expression of CAT from the HIV LTR 77-fold in rat RFBHIV1-1 and 3.1-fold in human SVTGHIV1-1 cells.
