Related Experiment Video
Updated: Jul 17, 2026

Stimulation of Notch Signaling in Mouse Osteoclast Precursors
Published on: February 28, 2017
Induction of a program gene expression during osteoblast differentiation with strontium ranelate
Ling-Ling Zhu1, Samir Zaidi, Yuanzhen Peng
1Mount Sinai Bone Program, Department of Medicine, Mount Sinai School of Medicine, New York, NY 10029, USA.
Strontium ranelate promotes osteoblast differentiation and bone formation. This osteoporosis treatment stimulates specific gene expression in bone cells, enhancing colony-forming unit-osteoblasts (CFU-obs) development.
Area of Science:
- Bone Biology and Osteoporosis Research
- Pharmacology of Bone Anabolic Agents
Background:
- Osteoporosis treatment aims to enhance bone formation.
- Strontium ranelate is a novel agent investigated for its bone-forming potential.
- Understanding its mechanism on osteoblast differentiation is crucial.
Purpose of the Study:
- To investigate the effects of strontium ranelate on osteoblast gene expression.
- To assess the impact of strontium ranelate on mineralized colony-forming unit-osteoblasts (CFU-obs) formation.
- To determine the cell type-specificity of strontium ranelate's effects on osteoblast differentiation.
Main Methods:
- Culturing bone marrow-derived stromal cells and U-33 pre-osteoblastic cells.
- Treating cells with varying concentrations and durations of strontium ranelate.
- Analyzing gene expression of key osteogenic markers (Runx2, BSP, osteocalcin) via quantitative methods.
- Quantifying mineralized CFU-obs formation using von Kossa staining.
Main Results:
- Strontium ranelate significantly increased Runx2 and bone sialoprotein (BSP) expression in differentiating stromal cells, alongside enhanced CFU-obs formation.
- In pre-osteoblastic cells, strontium ranelate boosted Runx2 and osteocalcin expression.
- Mature osteoblastic cells showed increased BSP and osteocalcin expression, with minor Runx2 modulation.
Conclusions:
- Strontium ranelate effectively stimulates osteoblast differentiation.
- The induction of specific gene expression programs by strontium ranelate is cell type-dependent.
- Enhanced osteoblast differentiation is the probable mechanism behind strontium ranelate's therapeutic bone-forming effects in osteoporosis.
More Related Videos
07:53Peptides from Phage Display Library Modulate Gene Expression in Mesenchymal Cells and Potentiate Osteogenesis in Unicortical Bone Defects
Published on: December 10, 2010
06:47Isolation of Mesenchymal Stem Cells from Human Alveolar Periosteum and Effects of Vitamin D on Osteogenic Activity of Periosteum-derived Cells
Published on: May 4, 2018
Related Concept Videos
Bone Formation by Endochondral Ossification
Osteoclasts in Bone Remodeling
Bone Formation by Intramembranous Ossification
The process begins when mesenchymal cells in the embryonic skeleton gather together and differentiate into osteogenic cells, which then develop into...
Hormones and Bone Tissue
Hormones That Influence Osteoblasts and/or Maintain the Matrix
Several hormones are necessary for controlling bone growth and maintaining the bone matrix. The pituitary gland secretes growth hormone (GH), which, as its name implies, controls bone growth. This happens in several ways: first, it triggers chondrocyte...