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Updated: Sep 13, 2025
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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
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Ultrastructural Aspects of Physiological Mineralization: A Comparative Study in Different Hard Tissues
Marina Borgese1, Mario Raspanti1, Marina Protasoni1
1Department of Medicine and Technological Innovation, Insubria University, 21100 Varese, Italy.
Biomolecules
|July 29, 2025
Summary
Vertebrate calcified tissues like bone and dentin mineralize on collagen templates, but cartilage shows unique ultrastructural features. This difference suggests distinct molecular mechanisms in cartilage mineralization compared to other collagenous tissues.
Area of Science:
- Biomineralization
- Tissue Engineering
- Comparative Anatomy
Background:
- Vertebrate calcified tissues (bone, cartilage, dentin, tendons) involve mineral deposition on collagen templates.
- The precise molecular mechanisms of mineralization vary and are not fully understood.
Purpose of the Study:
- Investigate ultrastructural differences in the mineral phase of vertebrate calcified tissues.
- Clarify the role of collagen in tissue-specific mineralization processes.
Main Methods:
- High-resolution scanning electron microscopy (HR-SEM) was employed.
- Low-temperature thermal deproteination was used for direct visualization of the mineral component.
Main Results:
- Distinctive ultrastructural features were observed in each tissue.
- Mineralization often occurred discontinuously, forming clumps or clusters.
- Except in cartilage, the mineral phase correlated with collagen fibril layout and D-period.
Conclusions:
- Cartilage exhibits a unique mineralization process compared to bone, dentin, and tendons.
- Collagen type II in cartilage may influence its distinct mineralization pathway.
- Further research is needed to elucidate tissue-specific mineralization mechanisms.
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