The MYC Oncogene as a Cancer Drug Target

Author(s): Heiko Hermeking

Journal Name: Current Cancer Drug Targets

Volume 3 , Issue 3 , 2003

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The universal deregulation of c-myc gene expression in tumor cells suggests that this oncogene represents an attractive target for cancer therapeutic purposes. The same applies to the N-myc gene, which has a more restricted tissue specificity. Translocation (e.g., c-myc in Burkitts lymphoma), or amplification (e.g., N-myc in neuroblastoma) of myc genes has been causally linked to tumor formation. Furthermore, the c-myc promoter integrates diverse mitogenic signalling cascades, which are constitutively activated in tumor cells, and translates them into expression of the c- MYC transcription factor, which promotes cell proliferation by regulating the expression of numerous target genes. Recent experimental data suggest, that even a brief inhibition of c-myc expression may be sufficient to permanently stop tumor growth and induce regression of tumors. Attempts to identify specific inhibitors of c-MYC / MAX dimerization have yielded promising results. In addition, downstreamtarget genes of c-MYC represent attractive targets for tumor therapy. Tumor cells expressing c-MYC at elevated levels are sensitized to treatment with DNA-damaging drugs. In mice and presumably also in human patients, the successful treatment of c-myc-induced tumors with conventional chemotherapy depends on the presence of functional p53. Therefore, restoration of this pathway, which is commonly lost in cancer cells, may enhance therapy of c-myc-induced tumors. These and other recent developments, which address the use of myc genes as therapeutic targets for cancer treatment, are discussed in this review.

Keywords: myc oncogene, cancer drug target, c-myc gene, n-myc, burkitts lymphoma, myc genes, c-myc/max, c-myc-induced tumors

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Article Details

Year: 2003
Published on: 01 March, 2012
Page: [163 - 175]
Pages: 13
DOI: 10.2174/1568009033481949
Price: $65

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