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  • 1
    ISSN: 1573-7217
    Keywords: antisense ; protein kinase A ; apoptosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract In recent years, several laboratories have explored the possibility of using antisense oligodeoxynucleotides for specific manipulation of gene expression leading to cancer treatment. The enhanced expression of the RIα subunit of cyclic AMP-dependent protein kinase type I (PKA-I) has been correlated with cancer cell growth. In the present study, the effects of an antisense oligodeoxynucleotide targeted against RIα subunit of PKA-I on growth inhibition and apoptosis in MDA-MB-231 human breast cancer cells were investigated. The growth inhibitory effects of RIα antisense oligodeoxynucleotide correlated with a decrease in the RIα mRNA and protein levels. The growth inhibition was accompanied by changes in the cell cycle phase distribution, cell morpbology, cleavage of poly (ADP-ribose) polymerase (PARP), and appearance of apoptotic nuclei. By comparison, mismatched control oligodeoxynucleotide had no effect. On the basis of these results, it can be suggested that the RIα antisense oligodeoxynucleotide, which efficiently depletes the growth stimulatory RIα and induces apoptosis/differentiation, could be used as a therapeutic agent for breast cancer treatment.
    Type of Medium: Electronic Resource
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