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N-MYC Oncogene Amplification: A Consequence of Genomic Instability in Human NeuroblastomaGerman Cancer Research Center Division of Cytogenetics Heidelberg, Germany
German Cancer Research Center Division of Cytogenetics Heidelberg, Germany
German Cancer Research Center Division of Cytogenetics Heidelberg, Germany Increase of the dosage of cellular oncogenes by DNA amplification is a frequent genetic alteration of cancer cells and arises as the consequence of genomic instability. The presence of amplified cellular oncogenes is usually signaled by conspicuous chromosomal abnormalities "double minutes," or "homogeneously staining chromosomal regions." Some human cancers carry a specific amplified oncogene at high incidence. In neuroblastomas, which are tumors of the peripheral nervous system that arise from primitive neuroectodermal cells derived from neural crest, the amplification of the gene N-MYC has been associated with aggressively growing cancers and is an indicator for poor prognosis. N-MYC amplification is of predictive value for iden tifying neuroblastoma patients who either require specific therapeutic regimens or who do not benefit from chemotherapy. The Neuroscientist 1:277-285, 1995
Key Words: KEY WORDS N-MYC p53 Tumorigenesis Neuroblastoma Gene amplification Oncogenes
The Neuroscientist, Vol. 1, No. 5,
277-285 (1995) |
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