Effect of differentiation inducers on growth characteristics of human glioma cell lines

Laszlo Geder, John W. Kreider, Javad Towfighi, Robert B. Page, Roger L. Ladda, Robert W. Brennan, Fred Rapp

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1 Scopus citations


The effect of dimethylsulfoxide (DMSO) and iododeoxyuridine (IUdR) on the growth characteristics of two established human glioblastoma cell lines (FG and HMCN-1) was studied. The FG cell line has been characterized. The HMCN-1 cell line, established in our laboratory, consisted of fibroblastoid and polygonal cells that grew without contact inhibition. Subcutaneous injection of these cells into weanling athymic nude mice induced slowly growing, solid tumors that were histologically spindly with areas that were similar to the original tumor. Chromosomal analyses revealed a human heteroploid pattern with a modal number of 69. The cells of the original human glioma contained S-100 protein and glial fibrillary acidic protein (GFA protein), whereas the established cells failed to express markers. Prolonged treatment of glioma cells with DMSO generated a more adherent, normal human fibroblastoid phenotype that grew with contact inhibition. The new phenotype and proliferative restriction of these cells was evident as late as 50 days after discontinuation of treatment. The chemical induction of cell differentiation resulted in decreased tumorigenic potential in athymic nude mice.

Original languageEnglish (US)
Pages (from-to)251-271
Number of pages21
JournalJournal of neuro-oncology
Issue number3
StatePublished - Oct 1 1987

All Science Journal Classification (ASJC) codes

  • Oncology
  • Neurology
  • Clinical Neurology
  • Cancer Research


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