Clock genes influence gene expression in growth plate and endochondral ossification in mice

Takeshi Takarada, Ayumi Kodama, Shogo Hotta, Michihiro Mieda, Shigeki Shimba, Eiichi Hinoi, Yukio Yoneda

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

We have previously shown transient promotion by parathyroid hormone of Period-1 (Per1) expression in cultured chondrocytes. Here we show the modulation by clock genes of chondrogenic differentiation through gene transactivation of the master regulator of chondrogenesis Indian hedgehog (IHH) in chondrocytes of the growth plate. Several clock genes were expressed with oscillatory rhythmicity in cultured chondrocytes and rib growth plate in mice, whereas chondrogenesis was markedly inhibited in stable transfectants of Per1 in chondrocytic ATDC5 cells and in rib growth plate chondrocytes from mice deficient of brain and muscle aryl hydrocarbon receptor nuclear translocator-like (BMAL1). Ihh promoter activity was regulated by different clock gene products, with clear circadian rhythmicity in expression profiles of Ihh in the growth plate. In BMAL1-null mice, a predominant decrease was seen in Ihh expression in the growth plate with a smaller body size than in wild-type mice. BMAL1 deficit led to disruption of the rhythmic expression profiles of both Per1 and Ihh in the growth plate. A clear rhythmicity was seen with Ihh expression in ATDC5 cells exposed to dexamethasone. In young mice defective of BMAL1 exclusively in chondrocytes, similar abnormalities were found in bone growth and Ihh expression. These results suggest that endochondral ossification is under the regulation of particular clock gene products expressed in chondrocytes during postnatal skeletogenesis through a mechanism relevant to the rhythmic Ihh expression.

Original languageEnglish
Pages (from-to)36081-36095
Number of pages15
JournalJournal of Biological Chemistry
Volume287
Issue number43
DOIs
Publication statusPublished - Oct 19 2012
Externally publishedYes

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Growth Plate
Chondrocytes
Osteogenesis
Gene expression
Clocks
Genes
Gene Expression
Periodicity
Chondrogenesis
Ribs
Aryl Hydrocarbon Receptor Nuclear Translocator
Hedgehogs
Bone Development
Body Size
Parathyroid Hormone
Dexamethasone
Transcriptional Activation
Muscle
Brain
Bone

ASJC Scopus subject areas

  • Biochemistry
  • Cell Biology
  • Molecular Biology

Cite this

Clock genes influence gene expression in growth plate and endochondral ossification in mice. / Takarada, Takeshi; Kodama, Ayumi; Hotta, Shogo; Mieda, Michihiro; Shimba, Shigeki; Hinoi, Eiichi; Yoneda, Yukio.

In: Journal of Biological Chemistry, Vol. 287, No. 43, 19.10.2012, p. 36081-36095.

Research output: Contribution to journalArticle

Takarada, Takeshi ; Kodama, Ayumi ; Hotta, Shogo ; Mieda, Michihiro ; Shimba, Shigeki ; Hinoi, Eiichi ; Yoneda, Yukio. / Clock genes influence gene expression in growth plate and endochondral ossification in mice. In: Journal of Biological Chemistry. 2012 ; Vol. 287, No. 43. pp. 36081-36095.
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