Up-regulation of circadian clock gene Period 2 in the prostate mesenchymal cells during flutamide-induced apoptosis

Kaoru Yoshida, Pei Jian He, Nobuhiko Yamauchi, Seiichi Hashimoto, Masa Aki Hattori

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Androgen regulates the proper development and physiological function of the prostate. Here, we investigated the modulation of androgen and androgen receptor (AR) antagonist on circadian oscillations of a clock core gene Period 2 (Per2) in rat prostate mesenchymal cells (PMCs). Circadian oscillations were analyzed with the real-time monitoring system of gene expression using transgenic rats introduced with mouse Per2 promoter fused to a destabilized luciferase (Per2-dLuc) reporter gene. Analyses of circadian oscillations, immunofluorescence, and androgen response element (ARE)-luciferase reporter assay revealed that circadian clocks are operative and the AR protein is functional in PMCs in vitro. Androgen such as testosterone (T) and dihydrotestosterone (DHT) did not cause any changes in circadian Per2-dLuc oscillations of confluent cells. Conversely, flutamide (FL) up-regulated the amplitude of circadian Per2-dLuc oscillations in a dose-dependent manner, whereas T antagonized the action of FL. The PER2 protein was markedly accumulated by FL treatment and localized in both the nucleus and cytoplasm during the first peak period of circadian Per2-dLuc oscillations. Simultaneously, FL treatment increased apoptotic cell death. Collectively, the present study demonstrates that a clock gene Per2 is up-regulated in PMCs during FL-induced apoptotic cell death. Thus, circadian oscillations of Per2 gene expression may be closely linked to the cellular states of PMCs such as apoptotic cell death.

Original languageEnglish
Pages (from-to)37-45
Number of pages9
JournalMolecular and cellular biochemistry
Volume335
Issue number1-2
DOIs
Publication statusPublished - Feb 1 2010

Fingerprint

Flutamide
Circadian Clocks
Clocks
Prostate
Up-Regulation
Genes
Androgens
Apoptosis
Cell death
Cell Death
Luciferases
Gene expression
Rats
Androgen Receptor Antagonists
Transgenic Rats
Dihydrotestosterone
Computer Systems
Androgen Receptors
Response Elements
Gene Expression Profiling

All Science Journal Classification (ASJC) codes

  • Clinical Biochemistry
  • Molecular Biology
  • Cell Biology

Cite this

Up-regulation of circadian clock gene Period 2 in the prostate mesenchymal cells during flutamide-induced apoptosis. / Yoshida, Kaoru; He, Pei Jian; Yamauchi, Nobuhiko; Hashimoto, Seiichi; Hattori, Masa Aki.

In: Molecular and cellular biochemistry, Vol. 335, No. 1-2, 01.02.2010, p. 37-45.

Research output: Contribution to journalArticle

Yoshida, Kaoru ; He, Pei Jian ; Yamauchi, Nobuhiko ; Hashimoto, Seiichi ; Hattori, Masa Aki. / Up-regulation of circadian clock gene Period 2 in the prostate mesenchymal cells during flutamide-induced apoptosis. In: Molecular and cellular biochemistry. 2010 ; Vol. 335, No. 1-2. pp. 37-45.
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