Tissue culture conditions determine the effects of estrogen and growth factors on the anchorage independent growth of human breast cancer cell lines

Gerhard Zugmaier, Cornelius Knabbe, Christina Fritsch, Susan Simpson, Bruce Ennis, Marc Lippman, Robert B. Dickson

Research output: Contribution to journalArticlepeer-review

14 Scopus citations

Abstract

We determined the effect of epidermal growth factor, insulin-like-growth-factor-1 and estradiol on the anchorage independent growth of the estrogen receptor positive human breast cancer cell lines MCF7 and T-47D. In serum free conditions growth factors but not estrogen induced a dose dependent stimulation of growth in both cell lines. The ability of estrogen to induce colony formation of early passage MCF7 cells (<100) was strictly correlated to the concentration of sulfatase and charcoal treated calf serum (CCS) with a maximal effect at a concentration of 5% CSS and 10 nM estradiol. CCS alone had no stimulatory effect on the anchorage independent growth of early passage MCF7 cells, but increased colony formation in late passage (> 1000) MCF7 and T-47D cells. The growth of late passage MCF7 cells was inhibited by antiestrogen. Thus, the presence of serum components is necessary for the effect of estrogen but not for the effects of growth factors on the anchorage independent growth of estrogen receptor positive human breast cancer cell lines; after a prolonged period of tissue culture serum components switch their function from indirectly modulating estrogen effects to directly stimulating growth in the absence of estrogen.

Original languageEnglish (US)
Pages (from-to)681-685
Number of pages5
JournalJournal of Steroid Biochemistry and Molecular Biology
Volume39
Issue number5 PART 1
DOIs
StatePublished - Nov 1991

ASJC Scopus subject areas

  • Endocrinology, Diabetes and Metabolism
  • Biochemistry
  • Molecular Medicine
  • Molecular Biology
  • Endocrinology
  • Clinical Biochemistry
  • Cell Biology

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