Lavrovsky Y V, Svinarchuk F P, Lavrovsky V A, Yefremov Y R, Vlassov V V
Institute of Bioorganic Chemistry, Genetics, Siberian Division, Russian Academy of Sciences, Novosibirsk.
FEBS Lett. 1993 Jan 25;316(2):161-4. doi: 10.1016/0014-5793(93)81207-g.
c-fos gene expression in two types of mouse sarcoma cells of spontaneous origin and in revertants to pseudonormal phenotype has been investigated. In the latter cells the content of c-fos mRNA is similar to that in normal fibroblasts. Activity of transcription factors interacting with the regulatory elements, SRE, DSE and TRE, in the c-fos promoter do not correlate with the c-fos mRNA concentration. However, experiments with cells transformed with the indicator plasmid, fos-CAT, showed that the 600 bp c-fos promoter region provides the chloramphenicol acetyltransferase activity correlating with c-fos mRNA expression in cell revertants to a pseudonormal phenotype.
