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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
Published on: June 24, 2018
Boron regulates mineralized tissue-associated proteins in osteoblasts (MC3T3-E1)
Sema S Hakki1, Buket S Bozkurt, Erdogan E Hakki
1Selcuk University, Faculty of Dentistry, Department of Periodontology, Konya, Turkey. sshakki@yahoo.com
Summary
Boron (B) significantly enhances bone metabolism by increasing mineralization and promoting osteoblastic gene expression in pre-osteoblastic cells. These findings suggest boron
Area of Science:
- Biochemistry and Molecular Biology
- Cell Biology
- Biomaterials Science
Background:
- Boron (B) is an essential trace element with poorly understood roles in bone metabolism.
- Pre-osteoblastic cells (MC3T3-E1) are a standard model for studying bone formation.
- Understanding boron's effects is crucial for potential applications in regenerative medicine.
Purpose of the Study:
- To investigate the impact of various boron concentrations on MC3T3-E1 cell survival, proliferation, and mineralization.
- To analyze the effects of boron on the mRNA expression of key bone-related proteins.
- To determine boron's influence on the protein levels of Bone Morphogenetic Proteins (BMPs).
Main Methods:
- Cell viability was assessed using MTT assays at 24 and 96 hours.
- Cell proliferation was measured by direct cell counting over 14 days.
- Mineralization was evaluated through nodule formation assays.
- Quantitative RT-PCR was used to measure mRNA expression of Collagen type I (COL I), Osteopontin (OPN), Bone Sialoprotein (BSP), Osteocalcin (OCN), and RunX2.
- Western blotting or ELISA was employed to quantify BMP-4, -6, and -7 protein levels.
Main Results:
- Short-term cell survival decreased at high boron concentrations (≥1000 ng/ml), but long-term proliferation showed no significant difference.
- Increased mineralized nodule formation was observed at 1 and 10 ng/ml boron concentrations.
- Boron treatment significantly upregulated mRNA expression of COL I, OPN, BSP, OCN, and RunX2, indicating enhanced osteoblastic function.
- Boron treatment increased BMP-4, -6, and -7 protein levels at concentrations of 0.1, 1, 10, and 100 ng/ml.
Conclusions:
- Boron plays a significant role in regulating bone metabolism at the molecular level.
- Low to moderate concentrations of boron promote osteoblastic differentiation and mineralization.
- Boron holds potential for novel applications in regenerative medicine for bone repair and tissue engineering.
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