Looking for protein stabilizing drugs with thermal shift assay.

Area of Science:

• Biochemistry
• Pharmacology
• Enzyme kinetics

Background:

• Pharmacological chaperones are small molecules that stabilize mutant proteins.
• High-throughput screening methods are crucial for identifying effective therapeutic agents.
• Fabry and Pompe diseases are lysosomal storage disorders caused by enzyme deficiencies.

Purpose of the Study:

• To demonstrate the robustness, reproducibility, and versatility of the thermal shift assay for screening pharmacological chaperones.
• To validate the method using Deoxygalactonojirimycin and N-Butyldeoxynojirimycin as test cases.
• To assess the influence of experimental parameters on assay performance.

Main Methods:

• Thermal shift assay for protein stabilization studies.
• Utilized lysosomal alpha-galactosidase A and alpha-glucosidase as target enzymes.
• Evaluated the impact of solvent composition and scanning rate on assay results.
• Employed first derivatives of raw data to determine a melting temperature equivalent.

Main Results:

• The thermal shift assay proved to be a robust and reproducible method.
• The assay demonstrated versatility in screening pharmacological chaperones.
• A melting temperature equivalent was accurately derived from the first derivatives of the assay data.
• Experimental parameters like solvent and scanning rate were shown to influence the measurements.

Conclusions:

• The thermal shift assay is a valuable tool for high-throughput screening of pharmacological chaperones.
• The method provides reliable data for enzyme stabilization and drug discovery.
• Careful consideration of experimental conditions is necessary for optimal assay performance.