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Science 22 May 1981:
Vol. 212. no. 4497, pp. 941 - 943
DOI: 10.1126/science.7233190
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Articles

Science, Vol 212, Issue 4497, 941-943
Copyright © 1981 by American Association for the Advancement of Science

articles

Activation of the transforming potential of a normal cell sequence: a molecular model for oncogenesis

DG Blair, M Oskarsson, TG Wood, WL McClements, PJ Fischinger, and GG Vande Woude

The molecularly cloned, long terminal repeat (LTR) of the Moloney sarcoma virus (M-MSV) provirus has been covalently linked to c-mos, the cellular homolog of the M-MSV-specific sequence, v-mos. These newly constructed clones lack any M-MSV-derived sequences other than the LTR, but in DNA transfection assays they transform cells as efficiently as cloned subgenomic M-MSV fragments containing both v-mos and LTR. Cells transformed by LTR:c-mos hybrid molecules contain additional copies of mos DNA, and several size classes of polyadenylated RNA's with sequence homology to mos. The activation of the transforming potential of c-mos by the proviral LTR suggests a model whereby LTR-like elements could activate other normal cell sequences with oncogenic potential.


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