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Bead Aggregation Assays for the Characterization of Putative Cell Adhesion Molecules
Published on: October 17, 2014
A possible role of N-cadherin in thalidomide teratogenicity
A Thiele1, M Thormann, H J Hofmann
1University of Leipzig, Institute of Zoology, Germany. shaus@rz.uni-leipzig.de
Abstract:
Several experimental findings indicate that the adhesion molecule N-cadherin participates in distinct processes of embryogenesis that spatiotemporarily correlate with high sensitivity to thalidomide. Therefore, we suppose that thalidomide might interfere with N-cadherin-mediated interactions. This hypothesis is supported by protein-ligand docking studies simulating and characterizing the binding of thalidomide to N-cadherin molecules. Thalidomide was found to bind at the N-terminal domain of N-cadherin mimicking a tryptophan residue which is critical for the homodimerization of the adhesion molecule. Based on these results, we suggest that thalidomide might disturb cellular recognition and migration processes in morphogenesis by interaction with N-cadherin.
Insights
Thalidomide may disrupt embryonic development by interfering with N-cadherin, an adhesion molecule crucial for cell interactions. This study used computational docking to show thalidomide binding to N-cadherin, suggesting a mechanism for developmental toxicity.
Area of Science:
- Developmental biology
- Molecular pharmacology
- Biochemistry
Background:
- N-cadherin is an adhesion molecule involved in embryogenesis.
- Embryonic development stages sensitive to thalidomide overlap with N-cadherin functions.
Purpose of the Study:
- To investigate the hypothesis that thalidomide interferes with N-cadherin-mediated cell interactions.
- To elucidate the molecular mechanism underlying thalidomide's potential effects on N-cadherin.
Main Methods:
- Protein-ligand docking simulations were employed.
- The binding of thalidomide to N-cadherin was characterized computationally.
Main Results:
- Thalidomide was found to bind to the N-terminal domain of N-cadherin.
- The binding site mimics a tryptophan residue essential for N-cadherin homodimerization.
Conclusions:
- Thalidomide may disrupt N-cadherin-mediated cell recognition and migration during morphogenesis.
- This interaction provides a potential molecular explanation for thalidomide's teratogenic effects.
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