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Inhibition of cell cycle progression by antisense oligodeoxynucleotides
1Jefferson Cancer Institute, Jefferson Medical College, Philadelphia, Pennsylvania 19107-5541.
Abstract:
We have used the antisense strategy to study the role of certain genes in cell cycle progression. In particular, we used antisense oligodeoxynucleotides to study: (1) the role of the IGF-1 receptor in the control of cell proliferation; and (2) the sequence of gene expression during the cell cycle. Our results can be summarized as follows: (1) the activation of the IGF-1 receptor by its ligand, IGF-1, is an obligatory step in the proliferation of fibroblasts and hemopoietic cells; and (2) the expression of DNA synthesis genes, such as PCNA, DNA polymerase alpha, and cdc2, is dependent on the expression of previous genes. A tentative temporal order is: c-myc > c-myb > IGF-1 receptor > DNA synthesis genes.
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