Abstract
Background: Steroid hormones affect the proliferation of breast cancer. The aim of this study
was to test the effect of estradiol, progesterone and testosterone on MCF-7 and MDA-MB468
human breast cancer cell line.
Methods and Materials: The human breast cancer cell line MCF-7 and MDA-MB468 were grown
in charcoal striped serum in the presence and absence of 10 nM 17- β-estradiol with different
concentration of progesterone and testosterone for 72 hrs. Growth of cells evaluated by MTT
method.
Results: The results demonstrated that estradiol produced an increase in the cell proliferation
rate of MCF-7 cells grown in the presence of charcoal-stripped serum, but had no effect on MDAMB468
cells. While progesterone had no effect on cell growth when tested alone on both cell lines,
it significantly inhibited the growth of MCF-7 cells in the presence of 10 nM estradiol. Testosterone
had no effect on cell growth of MDA-MB468 cells in the presence or absence of estradiol. In MCF-
7 cells, testosterone significantly inhibited the growth of these cells in the absence or presence of
estradiol.
Conclusions: Proliferation of breast cancer cells are hormone dependent or hormone
independent.
was to test the effect of estradiol, progesterone and testosterone on MCF-7 and MDA-MB468
human breast cancer cell line.
Methods and Materials: The human breast cancer cell line MCF-7 and MDA-MB468 were grown
in charcoal striped serum in the presence and absence of 10 nM 17- β-estradiol with different
concentration of progesterone and testosterone for 72 hrs. Growth of cells evaluated by MTT
method.
Results: The results demonstrated that estradiol produced an increase in the cell proliferation
rate of MCF-7 cells grown in the presence of charcoal-stripped serum, but had no effect on MDAMB468
cells. While progesterone had no effect on cell growth when tested alone on both cell lines,
it significantly inhibited the growth of MCF-7 cells in the presence of 10 nM estradiol. Testosterone
had no effect on cell growth of MDA-MB468 cells in the presence or absence of estradiol. In MCF-
7 cells, testosterone significantly inhibited the growth of these cells in the absence or presence of
estradiol.
Conclusions: Proliferation of breast cancer cells are hormone dependent or hormone
independent.
Keywords
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Copyright
© 2005, Author(s). This open-access article is available under the Creative Commons Attribution 4.0 (CC BY 4.0) International License (https://creativecommons.org/licenses/by/4.0/), which allows for unrestricted use, distribution, and reproduction in any medium, provided that the original work is properly cited.