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Androgen receptor reverts dexamethasone‑induced inhibition of prostate cancer cell proliferation and migration

Ju Guo1, Ke Ma2, Hai-Mei Xia3

  • 1Department of Urology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi 330006, P.R. China.

Molecular Medicine Reports
|February 14, 2018
PubMed

Insights

Androgen receptor (AR) influences how dexamethasone affects prostate cancer cells. AR can reverse dexamethasone

Area of Science:

  • Oncology
  • Molecular Biology
  • Endocrinology

Background:

  • Prostate cancer treatment often involves hormonal therapies.
  • Glucocorticoids like dexamethasone can impact cancer cell behavior.
  • The role of androgen receptor (AR) in mediating these effects is not fully understood.

Purpose of the Study:

  • To investigate the role of androgen receptor (AR) in mediating the effects of dexamethasone on prostate cancer cell proliferation and migration.
  • To determine how AR and glucocorticoid receptor (GR) expression profiles influence cellular responses to dexamethasone.

Main Methods:

  • Utilized multiple prostate cancer cell lines (LNCaP, 22Rv1, C4-2, PC3) in in vitro culture.
  • Administered dexamethasone after charcoal-stripping serum to ensure glucocorticoid-specific effects.
  • Assessed cell proliferation using MTT assays and cell migration using migration assays.

Main Results:

  • Dexamethasone suppressed proliferation and migration in PC3 cells (GR+, AR-).
  • No significant effect of dexamethasone was observed on LNCaP, C4-2, and 22Rv1 cell lines.
  • Androgen receptor (AR) expression was found to revert dexamethasone-induced inhibition of proliferation and migration.

Conclusions:

  • Androgen receptor (AR) plays a critical role in modulating the response of prostate cancer cells to dexamethasone.
  • The expression status of both AR and glucocorticoid receptor (GR) dictates whether dexamethasone inhibits or has no effect on cell proliferation and migration.
  • AR acts as a key factor in reversing the inhibitory effects of dexamethasone on prostate cancer cell growth and movement.
Keywords:
prostate cancerandrogen receptorglucocorticoid receptorproliferationmigration

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