Lgr4 Expression in Osteoblastic Cells Is Suppressed by Hydrogen Peroxide Treatment

Chantida Pawaputanon Na Mahasarakham, Yayoi Izu, Katsuhiko Nishimori, Yuichi Izumi, Masaki Noda, Yoichi Ezura

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

LGR4 is expressed in bone and has been shown to be involved in bone metabolism. Oxidative stress is one of the key issues in pathophysiology of osteoporosis. However, the link between Lgr4 and oxidative stress has not been known. Therefore, effects of hydrogen peroxide on Lgr4 expression in osteoblasts were examined. Hydrogen peroxide treatment suppressed the levels of Lgr4 mRNA expression in an osteoblastic cell line, MC3T3-E1. The suppressive effects were not obvious at 0.1 mM, while 1 mM hydrogen peroxide suppressed Lgr4 expression by more than 50%. Hydrogen peroxide treatment suppressed Lgr4 expression within 12 h and this suppression lasted at least up to 48 h. Hydrogen peroxide suppression of Lgr4 expression was still observed in the presence of a transcription inhibitor but was no longer observed in the presence of a protein synthesis inhibitor. Although Lgr4 expression in osteoblasts is enhanced by BMP2 treatment as reported before, hydrogen peroxide treatment suppressed Lgr4 even in the presence of BMP2. Finally, hydrogen peroxide suppressed Lgr4 expression in primary cultures of osteoblasts similarly to MC3T3-E1 cells. These date indicate that hydrogen peroxide suppresses Lgr4 expression in osteoblastic cells. J. Cell. Physiol. 232: 1761–1766, 2017.

Original languageEnglish
Pages (from-to)1761-1766
Number of pages6
JournalJournal of Cellular Physiology
Volume232
Issue number7
DOIs
Publication statusPublished - 2017 Jul 1

ASJC Scopus subject areas

  • Physiology
  • Clinical Biochemistry
  • Cell Biology

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    Pawaputanon Na Mahasarakham, C., Izu, Y., Nishimori, K., Izumi, Y., Noda, M., & Ezura, Y. (2017). Lgr4 Expression in Osteoblastic Cells Is Suppressed by Hydrogen Peroxide Treatment. Journal of Cellular Physiology, 232(7), 1761-1766. https://doi.org/10.1002/jcp.25684