Differential Expression of N-myc in Phenotypically Distinct Subclones of a Human Neuroblastoma Cell Line

John Foley, Susan L. Cohn, Helen R. Salwen, Daniel Chagnovich, Janet Cowan, Karen L. Mason, Linda M. Parysek

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56 Scopus citations

Abstract

Neuroblastomas are malignant childhood neoplasms that arise from derivatives of the neural crest. We report the characterization of a new neuroblastoma cell line, designated NBL-W, derived from the primary tumor of a patient with stage IVS disease (S. L. Cohn, C. V. Herst, H. S. Maurer, and S. T. Rosen, J. Clin. Oncol., 5: 1441-1444, 1987) according to the criteria of Evans (A. E. Evans, G. J. D'Augiâ»,and J. Randolf, Cancer (Phila.), 27: 374-378, 1971). Neurite-bearing (N) and substrate-adherent (S) cell lines have been subcloned from the parent line. N and S cells can interconvert, and both cell types label with the neural crest cell surface marker antibody, HNK-1. Cells in the subcloned lines and in the parent line have been shown by Southern blot analysis to contain ~100 copies of the N-myc gene. Cytogenetic analysis shows a homogeneously staining region present on chromosome 19. Although these subclones are of identical genotype, the S cells express lower amounts of N-myc niRNA and protein as compared to the N cells. N cells express several neuronal proteins including the neurotransmitterprocessing enzymes tyrosine hydroxylase and dopamine/8-hydroxylase, the neuronal intermediate filament proteins peripherin and NF66/ainternexin, and the neural cell adhesion molecule. S cells generally lack neuronal markers but express the mesenchymal intermediate filament protein vimentin, and a small subset of the S cells express glial fibrillar) acidic protein. Some S cells were labeled weakly with neural cell adhesion molecule antibody; others were negative. S cells did not express the glial marker S-100 or a melanocyte marker, tyrosinase. Thus, S cells express the neural crest marker HNK-1 but do not express a set of antigens characteristic of any known cell type derived from the neural crest. These results are consistent with the suggestion that differential N-myc expres sion may be involved in the interconversion of N and S cells but indicate that the S cell phenotype need not represent a highly differentiated neural crest derivative.

Original languageEnglish (US)
Pages (from-to)6338-6345
Number of pages8
JournalCancer Research
Volume51
StatePublished - Dec 1991
Externally publishedYes

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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    Foley, J., Cohn, S. L., Salwen, H. R., Chagnovich, D., Cowan, J., Mason, K. L., & Parysek, L. M. (1991). Differential Expression of N-myc in Phenotypically Distinct Subclones of a Human Neuroblastoma Cell Line. Cancer Research, 51, 6338-6345.