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Osteoclasts in Bone Remodeling

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Osteoclasts are cells responsible for bone resorption and remodeling. They originate from hematopoietic progenitor cells present in the bone marrow. Numerous progenitor cells fuse to form multinucleated cells, each with 10-20 nuclei. A single osteoclast has a diameter of 150 to 200 µM. These cells have ruffled borders that break down the underlying bone tissue and release minerals such as calcium into the blood in bone resorption. Osteoclasts cling to bones with their ruffled edges during bone...

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Related Experiment Video

Updated: May 27, 2026

Application of Retinoic Acid to Obtain Osteocytes Cultures from Primary Mouse Osteoblasts

Application of Retinoic Acid to Obtain Osteocytes Cultures from Primary Mouse Osteoblasts

Published on: May 13, 2014

Rat osteoblast cultures.

Isabel R Orriss¹, Sarah E B Taylor, Timothy R Arnett

¹Department of Cell and Developmental Biology, University College London, London, UK. i.orriss@ucl.ac.uk

Methods in Molecular Biology (Clifton, N.J.)

|December 2, 2011

Summary

This study details isolating and culturing primary osteoblasts from neonatal rats to measure bone matrix deposition and mineralization. It highlights the role of beta-glycerophosphate in osteoblast differentiation and mineralization.

Area of Science:

Cell Biology
Biochemistry
Histology

Background:

Osteoblasts are crucial for bone formation, mediating matrix deposition and mineralization.
Understanding osteoblast differentiation and function is key to bone biology research.
Primary cell cultures offer a model for studying these processes in detail.

Purpose of the Study:

To describe a method for isolating, culturing, and staining primary osteoblasts from neonatal rat calvaria and long bones.
To emphasize the utility of this assay for measuring bone matrix deposition and mineralization.
To investigate the role of beta-glycerophosphate in cell-mediated mineralization.

Main Methods:

Isolation and culture of primary osteoblasts from neonatal rat bone.
Staining techniques for histological and molecular analysis.

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Direct measurement of bone matrix deposition and mineralization.

Main Results:

Successful isolation and culture of primary osteoblasts yielding sufficient quantities for analysis.
Demonstration of direct measurement of bone matrix deposition and mineralization.
Observation of osteoblast differentiation at defined stages.

Conclusions:

The described osteoblast culture method is valuable for studying bone formation.
The assay allows for direct assessment of mineralization and osteoblast differentiation.
Beta-glycerophosphate plays a significant role in cell-mediated mineralization.