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Immunofluorescent analysis is a standard method for detecting DNA virus oncoproteins in transformed cells. Here we demonstrate the detection of DNA virus nuclear oncoproteins by flow cytometry of unfixed cells, after saponin permeabilization. This method could to be of value in the evaluation and quantitation of oncogene products in transformed cells.
In this study, the expression of the p53 tumor suppressor gene and the p53-regulated Mdm2 and Waf1 genes was evaluated in adenovirus (Ad)-transformed mouse cells. The expected levels of p53 mRNA and protein and Mdm2 mRNA were detected in all transformed cells. However, the level of Waf1 mRNA was markedly reduced in Ad12-transformed cells and in some(More)
The adenovirus type 5 (Ad5) 55-kDa E1B oncoprotein has been shown to form complexes with the p53 tumor suppressor protein. These complexes are thought to interfere with normal p53 activity and may be responsible for the paucity of p53 mutations in cells transformed by these viruses. This report describes an example of a p53 mutation in exon 5 in an(More)
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