Related Experiment Video
Updated: Aug 20, 2026
Peptides from Phage Display Library Modulate Gene Expression in Mesenchymal Cells and Potentiate Osteogenesis in Unicortical Bone Defects
Published on: December 10, 2010
Effect of nucleoside-5'-phosphates on collagen-induced in vitro mineralization
H S Talwar1, S K Singla, C Tandon
1Department of Biochemistry, Panjab University, Chandigarh 160014, India.
Abstract:
Nucleoside triphosphates (NTPs) at 4-10 microM concentrations were found to inhibit the rates of collagen-induced in vitro mineralization and ion exchange reactions. The sequential removal of the terminal phosphate groups caused a step-wise decrease in their inhibitory potency. The results suggest that NTPs inhibit the rates of ion uptake and exchange reactions at concentrations much lower than their intracellular physiological concentrations. Thus NTPs may be involved in the control of biological mineralization and the tissues which mineralize under physiological conditions develop a system to locally convert NTPs to NDPs and NMPs.
Insights
Nucleoside triphosphates (NTPs) inhibit biological mineralization and ion exchange. Their potency decreases with phosphate removal, suggesting NTPs regulate these processes at low concentrations.
Area of Science:
- Biochemistry
- Cell Biology
- Mineralization Studies
Background:
- Biological mineralization is crucial for skeletal formation and other physiological processes.
- Nucleoside triphosphates (NTPs) are essential energy carriers in cells.
- The role of NTPs in regulating mineralization is not fully understood.
Purpose of the Study:
- To investigate the inhibitory effects of NTPs on collagen-induced in vitro mineralization.
- To determine the relationship between NTP structure and inhibitory potency.
- To explore the potential role of NTPs in controlling biological mineralization.
Main Methods:
- In vitro assays measuring collagen-induced mineralization rates.
- Ion exchange reaction analysis.
- Sequential dephosphorylation of NTPs to assess potency changes.
Main Results:
- NTPs (4-10 microM) significantly inhibited mineralization and ion exchange rates.
- Inhibitory potency decreased stepwise with the removal of terminal phosphate groups.
- NTPs demonstrated inhibitory effects at concentrations lower than physiological intracellular levels.
Conclusions:
- NTPs can inhibit ion uptake and exchange reactions, suggesting a regulatory role in biological mineralization.
- Tissues that mineralize physiologically may possess mechanisms to convert NTPs to NDPs and NMPs.
- Further research is needed to elucidate the precise mechanisms of NTP involvement in mineralization control.
