Mitomycin C modulates the circadian oscillation of clock gene period 2 expression through attenuating the glucocorticoid signaling in mouse fibroblasts

Naoki Kusunose, Naoya Matsunaga, Kenichi Kimoto, Takahiro Akamine, Kengo Hamamura, Satoru Koyanagi, Shigehiro Ohdo, Toshiaki Kubota

研究成果: Contribution to journalArticle査読

4 被引用数 (Scopus)

抄録

Clock gene regulates the circadian rhythm of various physiological functions. The expression of clock gene has been shown to be attenuated by certain drugs, resulting in a rhythm disorder. Mitomycin C (MMC) is often used in combination with ophthalmic surgery, especially in trabeculectomy, a glaucoma surgical procedure. The purpose of this study was to investigate the influence of MMC on clock gene expression in fibroblasts, the target cells of MMC. Following MMC treatment, Bmal1 mRNA levels was significantly decreased, whereas Dbp, Per1, and Rev-erbα mRNA levels were significantly increased in the mouse fibroblast cell line NIH3T3 cells. Microarray analysis was performed to explore of the gene(s) responsible for MMC-induced alteration of clock gene expression, and identified Nr3c1 gene encoding glucocorticoid receptor (GR) as a candidate. MMC suppressed the induction of Per1 mRNA by dexamethasone (DEX), ligand of GR, in NIH3T3 cells. MMC also modulated the DEX-driven circadian oscillations of Per2::Luciferase bioluminescence in mouse-derived ocular fibroblasts. Our results demonstrate a previously unknown effect of MMC in GR signaling and the circadian clock system. The present findings suggest that MMC combined with trabeculectomy could increase the risk for a local circadian rhythm-disorder at the ocular surface.

本文言語英語
ページ(範囲)157-163
ページ数7
ジャーナルBiochemical and Biophysical Research Communications
467
1
DOI
出版ステータス出版済み - 11 6 2015

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Biochemistry
  • Molecular Biology
  • Cell Biology

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