Analysis of small-molecule interactions using Biacore S51 technology

Area of Science:

• Biochemistry
• Analytical Chemistry
• Drug Discovery

Background:

• Surface plasmon resonance (SPR) biosensors are crucial for analyzing molecular interactions.
• Existing SPR instruments have limitations in sensitivity and throughput for small-molecule drug discovery.
• Biacore AB developed the Biacore S51, an SPR biosensor engineered for enhanced small-molecule drug discovery and development.

Purpose of the Study:

• To introduce and evaluate the Biacore S51 SPR biosensor for small-molecule drug discovery.
• To assess the performance of the Biacore S51 in terms of sensitivity, reproducibility, and dynamic range.
• To highlight the advantages of the new hydrodynamic-addressing flow cell design.

Main Methods:

• Utilized surface plasmon resonance (SPR) technology with the new Biacore S51 instrument.
• Employed a hydrodynamic-addressing flow cell enabling multiple reaction and reference surfaces within a single flow cell.
• Tested the biosensor's performance using small-molecule inhibitors of carbonic anhydrase II.

Main Results:

• The Biacore S51 demonstrated increased sensitivity and larger sample handling capabilities.
• The hydrodynamic-addressing flow cell improved data quality and extended the kinetic range.
• The instrument showed high reproducibility, sensitivity, and dynamic range in performance tests.

Conclusions:

• The Biacore S51 biosensor offers significant advancements for small-molecule drug discovery and development.
• Its enhanced performance, particularly the novel flow cell, improves data quality and throughput.
• The S51 is well-suited for secondary screening, providing high-resolution data on small-molecule/target interactions.