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Analysis of Minerals Produced by hFOB 1.19 and Saos-2 Cells Using Transmission Electron Microscopy with Energy Dispersive X-ray Microanalysis
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Adenosine Triphosphate stimulates differentiation and mineralization in human osteoblast-like Saos-2 cells

Alessandro Cutarelli1,2, Mario Marini3, Virginia Tancredi3

  • 1Department of Orthopaedics and Traumatology, University Hospital Foundation, Policlinico Tor Vergata, Viale Oxford 81, Rome, 00133, Italy.

Development, Growth & Differentiation
|May 19, 2016
PubMed

Insights

Adenosine triphosphate (ATP) influences bone biology by affecting osteoblast activities. This study reveals ATP

Area of Science:

  • Biochemistry
  • Cell Biology
  • Bone Biology

Background:

  • Adenosine triphosphate (ATP) and purinergic signaling via P2 receptors are crucial in bone tissue biology.
  • ATP regulates osteoblast activities including proliferation, differentiation, and matrix mineralization, but results are controversial.

Purpose of the Study:

  • To investigate the effects of ATP on differentiation and mineralization in human osteoblast-like Saos-2 cells.
  • To clarify the role of ATP in osteogenesis and bone matrix formation.

Main Methods:

  • Analysis of ATP receptor functional activity in Saos-2 cells.
  • Assessment of gene expression for alkaline phosphatase (ALP), Runx2, and Osteocalcin (OC).
  • Measurement of ALP activity and mineral deposition.

Main Results:

  • ATP reduced cell proliferation and stimulated early-stage osteogenic differentiation, evidenced by increased ALP, Runx2, and OC expression and ALP activity.
  • ATP exhibited a biphasic effect on mineralization: low concentrations enhanced mineral deposition, while high concentrations reduced it.
  • Altered functional activity of ATP receptors was observed for the first time.

Conclusions:

  • ATP promotes osteogenic differentiation in early stages of in vitro maturation.
  • ATP influences bone mineralization in a concentration-dependent manner.
  • This study demonstrates the osteogenic effects of ATP on both differentiation and mineralization in human osteoblastic cells.
Keywords:
adenosine triphosphatecell differentiationmineralsosteoblastspurinergic P2receptors

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