The osteocyte plays multiple roles in bone remodeling and mineral homeostasis

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• 作者：Huayue Chen ; Takao Senda ; Kin-ya Kubo
• 关键词：Osteocyte ; Lacunar–canalicular system ; Sclerostin ; FGF23 ; RANKL ; Osteoporosis
• 刊名：Medical Molecular Morphology
• 出版年：2015
• 出版时间：June 2015
• 年：2015
• 卷：48
• 期：2
• 页码：61-68
• 全文大小：1,308 KB
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  26.Yang J,
• 作者单位：Huayue Chen (1)
  Takao Senda (1)
  Kin-ya Kubo (2)
  
  1. Department of Anatomy, Gifu University Graduate School of Medicine, 1-1 Yanagido, Gifu, 501-1194, Japan
  2. Seijoh University Graduate School of Health Care Studies, Tokai, Aichi, 476-8588, Japan
  
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Biomedicine
  Medical Microbiology
  Pathology
  Biological Microscopy
  Molecular Medicine
  
• 出版者：Springer Japan
• ISSN：1860-1499

文摘

Osteocytes are the most abundant cells in bone and are the major orchestrators of bone remodeling and mineral homeostasis. They possess a specialized cellular morphology and a unique molecular feature. Osteocytes are a stellate shape with numerous long, slender dendritic processes. The osteocyte cell body resides in the bone matrix of the lacuna and the dendritic processes extend within the canaliculi to adjacent osteocytes and other cells on the bone surface. Osteocytes form extensive intercellular network to sense and respond to environmental mechanical stimulus by the lacunar–canalicular system and gap junction. Osteocytes are long-lived bone cells. They can undergo apoptosis, which may have specific regulatory effects on osteoclastic bone resorption. Osteocytes can secrete several molecules, including sclerostin, receptor activator of nuclear factor κB ligand and fibroblast growth factor 23 to regulate osteoblastic bone formation, osteoclastic bone resorption and mineral homeostasis. A deeper understanding of the complex mechanisms that mediate the control of osteoblast and osteoclast function by osteocytes may identify new osteocyte-derived molecules as potential pharmacological targets for treating osteoporosis and other skeletal diseases.