Clinical & Experimental Metastasis

, Volume 12, Issue 3, pp 195–202

1α,25-Dihydroxyvitamin D3 inhibits the invasive potential of human breast cancer cellsin vitro

  • Christina Mørk Hansen
  • Thomas L. Frandsen
  • Nils Brünner
  • Lise Binderup
Article

DOI: 10.1007/BF01753887

Cite this article as:
Hansen, C.M., Frandsen, T.L., Brünner, N. et al. Clin Exp Metast (1994) 12: 195. doi:10.1007/BF01753887

Abstract

Using the Boyden chamber invasion assay, the effect of 1α,25-dihydroxyvitamin D3 [1α,25(OH)2D3] on the invasiveness of the highly invasive, oestrogen receptor-negative human breast cancer cell line MDA-MB-231 was examined. The MDA-MB-231 cells were shown to contain high-affinity receptors for 1α,25(OH)2D3 with a Kd of 1.5 × 10−11 M. When the cells were treated with 1α,25(OH)2D3 for 4 days before the assay was performed, a dose-dependent inhibition of their invasive potential was demonstrated. Fifty per cent inhibition of invasion was obtained with a concentration of 13 pM of 1α,25(OH)2D3. However, when the cells were treated for only 6 h during the assay, no inhibitory effect was seen. The process of migration was also affected by treatment with 1α,25(OH)2D3 for 4 days, although the inhibition was not of the same magnitude as seen for the invasion. Fifty per cent inhibition of migration occurred at a concentration of 3.2 nM of 1α,25(OH)2D3 (250 times higher than in the invasion assay). Inhibition of invasion and migration was not due to the known anti-proliferative effect of 1α,25(OH)2D3, as no growth reduction could be demonstrated with treatment up to 5 days. Based on the present investigation it can therefore be concluded that 1α,25(OH)2D3 is able to inhibit tumour cell invasiveness by a mechanism which is not exclusively based on its anti-proliferative and anti-migrative effects.

Keywords

breast cancer cell proliferation invasion migration 1α 25-dihydroxyvitamin D3 

Copyright information

© Rapid Communications of Oxford Ltd 1994

Authors and Affiliations

  • Christina Mørk Hansen
    • 1
  • Thomas L. Frandsen
    • 2
    • 1
  • Nils Brünner
    • 2
    • 1
  • Lise Binderup
    • 1
  1. 1.Department of BiochemistryLeo Pharmaceutical ProductsBallerupDenmark
  2. 2.Finsen LaboratoryCopenhagenDenmark

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