Cited by 144Bone Metabolism and DiseasesBone and Dental Protein StudiesAlkaline Phosphatase Research Studies

Matrix mineralization and the differentiation of osteocyte-like cells in culture

Mikuni-Takagaki, Yuko, Kakai, Yoshio, Satoyoshi, Masanori, Kawano, Eiji, Suzuki, Yoshihisa, Kawase, Toshio, Saito, Shigeru·1995·Journal of Bone and Mineral Research

Abstract

Osteocyte-like cells were prepared by sequentially treating calvaria from newborn rats with collagenase and chelating agents. On a reconstituted gel of basement membrane components, cells from the third collagenase digest displayed a round shape and expressed the highest level of alkaline phosphatase with minimal osteocalcin deposition into the matrix. On the other hand, cells derived from the interior after EDTA treatment exhibited well-developed dendritic cell processes and expressed essentially no alkaline phosphatase. The latter population also showed quite distinct characteristics such as higher extracellular activities of casein kinase II and ecto-5′-nucleotidase and the extracellular accumulation of a large amount of osteocalcin associated with mineral. These diverse phenotypic and protein expressions as well as the sites from which each population of cells were recovered strongly suggest that we have isolated osteoblastic and osteocytic cells. Bone sialoprotein II was extracellularly phosphorylated by casein kinase II in osteocytic cells but not in osteoblastic cells. We discuss the possibility that differentiation of young osteocytes from osteoblasts may facilitate the biochemical sequence of mineral deposition in the bone matrix.

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Crossref · 10.1002/jbmr.5650100209

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Authors
Mikuni-Takagaki, Y., Kakai, Y., Satoyoshi, M., Kawano, E., Suzuki, Y., Kawase, T., & Saito, S.
Affiliations
  • Department of Oral Biochemistry, Kanagawa Dental College, Yokosuka, Japan
  • Kanagawa Dental University (JP)
Venue
Journal of Bone and Mineral Research
Published
1995-02-01
Volume
10
Issue
2
Pages
231-242
ISSN
  • 0884-0431 (ISSN-L)
  • 1523-4681
OpenAlex
W2029859781
Cited by
144
References
46
Citations by year
2026: 2 · 2025: 2 · 2024: 3 · 2023: 2 · 2022: 2 · 2021: 5 · 2020: 9 · 2019: 6 · 2018: 6 · 2017: 2 · 2016: 7 · 2015: 8 · 2014: 10 · 2013: 6 · 2012: 8
FWCI
2.35
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Bone and Mineral Research (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Hayashi foundation to Mikuni-Takagaki
  • Ministry of Science, Education and Culture of Japan
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Bone Metabolism and Diseases
  • Health Sciences › Medicine › Rheumatology › Bone and Dental Protein Studies
  • Health Sciences › Medicine › Endocrinology, Diabetes and Metabolism › Alkaline Phosphatase Research Studies
Keywords
osteocyte differentiation, osteogenic differentiation, osteocyte-like cells, osteocalcin, bone matrix mineralization, casein kinase 2, ecto-5'-nucleotidase, alkaline phosphatase, collagenase digestion, EDTA treatment, calvaria, bone matrix deposition
MeSH terms
Alkaline Phosphatase, Animals, Animals, Newborn, Basement Membrane, Bone Matrix, Calcification, Physiologic, Cell Differentiation, Cell Separation, Cells, Cultured, Dendrites, DNA-Binding Proteins, Edetic Acid, Frontal Bone, Osteoblasts, Osteocytes, Parietal Bone, Phenotype, Phosphorylation, Osteocalcin, 5'-Nucleotidase, Rats, Sprague-Dawley, Protein Serine-Threonine Kinases, Casein Kinase II, Rats

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