Prolonged bioluminescence monitoring in mouse ex vivo bone culture revealed persistent circadian rhythms in articular cartilages and growth plates.

The bone is a metabolically active organ which undergoes repeated remodeling cycles of bone resorption and formation. In this study, we revealed a robust and extremely long-lasting circadian rhythm in ex vivo culture maintained for over six months from the femoral bone of a PERIOD2(Luciferase) mouse...

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Main Authors: Naoki Okubo, Yoichi Minami, Hiroyoshi Fujiwara, Yasuhiro Umemura, Yoshiki Tsuchiya, Toshiharu Shirai, Ryo Oda, Hitoshi Inokawa, Toshikazu Kubo, Kazuhiro Yagita
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2013-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC3817244?pdf=render
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author Naoki Okubo
Yoichi Minami
Hiroyoshi Fujiwara
Yasuhiro Umemura
Yoshiki Tsuchiya
Toshiharu Shirai
Ryo Oda
Hitoshi Inokawa
Toshikazu Kubo
Kazuhiro Yagita
author_facet Naoki Okubo
Yoichi Minami
Hiroyoshi Fujiwara
Yasuhiro Umemura
Yoshiki Tsuchiya
Toshiharu Shirai
Ryo Oda
Hitoshi Inokawa
Toshikazu Kubo
Kazuhiro Yagita
author_sort Naoki Okubo
collection DOAJ
description The bone is a metabolically active organ which undergoes repeated remodeling cycles of bone resorption and formation. In this study, we revealed a robust and extremely long-lasting circadian rhythm in ex vivo culture maintained for over six months from the femoral bone of a PERIOD2(Luciferase) mouse. Furthermore, we also identified robust circadian clocks in flat bones. High- or low-magnification real-time bioluminescence microscopic imaging revealed that the robust circadian rhythms emanated from the articular cartilage and the epiphyseal cartilage within the growth plate of juvenile animals. Stimulation by forskolin or dexamethasone treatment caused type 0 phase resetting, indicating canonical entraining properties of the bone clock. Together, our findings from long-term ex vivo culture revealed that "tissue-autonomous" circadian rhythm in the articular cartilage and the growth plate of femoral bone functions for several months even in an organ culture condition, and provided a useful in vitro assay system investigating the role of the biological clock in bone formation or development.
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spelling doaj.art-f2ad8f2c58fb4e2ca64d78d530469f1a2022-12-21T19:58:04ZengPublic Library of Science (PLoS)PLoS ONE1932-62032013-01-01811e7830610.1371/journal.pone.0078306Prolonged bioluminescence monitoring in mouse ex vivo bone culture revealed persistent circadian rhythms in articular cartilages and growth plates.Naoki OkuboYoichi MinamiHiroyoshi FujiwaraYasuhiro UmemuraYoshiki TsuchiyaToshiharu ShiraiRyo OdaHitoshi InokawaToshikazu KuboKazuhiro YagitaThe bone is a metabolically active organ which undergoes repeated remodeling cycles of bone resorption and formation. In this study, we revealed a robust and extremely long-lasting circadian rhythm in ex vivo culture maintained for over six months from the femoral bone of a PERIOD2(Luciferase) mouse. Furthermore, we also identified robust circadian clocks in flat bones. High- or low-magnification real-time bioluminescence microscopic imaging revealed that the robust circadian rhythms emanated from the articular cartilage and the epiphyseal cartilage within the growth plate of juvenile animals. Stimulation by forskolin or dexamethasone treatment caused type 0 phase resetting, indicating canonical entraining properties of the bone clock. Together, our findings from long-term ex vivo culture revealed that "tissue-autonomous" circadian rhythm in the articular cartilage and the growth plate of femoral bone functions for several months even in an organ culture condition, and provided a useful in vitro assay system investigating the role of the biological clock in bone formation or development.http://europepmc.org/articles/PMC3817244?pdf=render
spellingShingle Naoki Okubo
Yoichi Minami
Hiroyoshi Fujiwara
Yasuhiro Umemura
Yoshiki Tsuchiya
Toshiharu Shirai
Ryo Oda
Hitoshi Inokawa
Toshikazu Kubo
Kazuhiro Yagita
Prolonged bioluminescence monitoring in mouse ex vivo bone culture revealed persistent circadian rhythms in articular cartilages and growth plates.
PLoS ONE
title Prolonged bioluminescence monitoring in mouse ex vivo bone culture revealed persistent circadian rhythms in articular cartilages and growth plates.
title_full Prolonged bioluminescence monitoring in mouse ex vivo bone culture revealed persistent circadian rhythms in articular cartilages and growth plates.
title_fullStr Prolonged bioluminescence monitoring in mouse ex vivo bone culture revealed persistent circadian rhythms in articular cartilages and growth plates.
title_full_unstemmed Prolonged bioluminescence monitoring in mouse ex vivo bone culture revealed persistent circadian rhythms in articular cartilages and growth plates.
title_short Prolonged bioluminescence monitoring in mouse ex vivo bone culture revealed persistent circadian rhythms in articular cartilages and growth plates.
title_sort prolonged bioluminescence monitoring in mouse ex vivo bone culture revealed persistent circadian rhythms in articular cartilages and growth plates
url http://europepmc.org/articles/PMC3817244?pdf=render
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