Chromosomal localization of amplified N-myc in neuroblastoma cells using a biotinylated probe

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Abstract

G-banded chromosome analysis of neuroblastoma cells from two children revealed homogeneously staining regions (hsr) in one patient and double minutes (dmin) in the other. Subsequently, both abnormalities were confirmed as areas of N-myc amplification using chromosomal in situ hybridization with a biotinylated N-myc probe. In addition, the first patient's karyotype contained a possible derivative chromosome 17, which was also demonstrated to contain amplified N-myc, indicating the presence of an hsr unidentified by G-banding. Intercellular heterogeneity in the degree of amplification was also identified in the nuclei of interphase cells. This technique provides a quick method for detecting gene amplification, the identification of which may have useful clinical implications. ?? 1992.

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Rudduck, C., Lukeis, R. E., McRobert, T. L., Chow, C. W., & Garson, O. M. (1992). Chromosomal localization of amplified N-myc in neuroblastoma cells using a biotinylated probe. Cancer Genetics and Cytogenetics, 58(1), 55–59. https://doi.org/10.1016/0165-4608(92)90134-T

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