Standard operation procedure for switchSENSE DRX systems

Area of Science:

• Biochemistry
• Molecular Biology
• Biotechnology

Background:

• Numerous technologies exist for studying molecular interactions in vitro.
• Selecting the optimal method requires understanding the advantages and disadvantages of each approach, such as microfluidic surface-bound (e.g., SPR, switchSENSE) versus in-solution (e.g., ITC, MST) techniques.
• Surface-based methods offer advantages in sample requirement and off-rate characterization, while in-solution methods simplify sample preparation and handling.

Purpose of the Study:

• To provide a comprehensive standard operating procedure (SOP) for the switchSENSE method.
• To guide new users through sample preparation, instrument and biochip handling, and data acquisition and analysis.
• To assist researchers in determining the suitability of switchSENSE for their specific applications and maximize data output.

Main Methods:

• Detailed description of the switchSENSE technology, a microfluidic approach utilizing a controlled DNA-based ligand surface.
• Explanation of how to distribute up to two different ligand molecules on the surface at a customized density and ratio.
• Outline of the measurement process, including sample preparation, instrument operation, and data analysis.

Main Results:

• The SOP facilitates decision-making regarding the choice of molecular interaction analysis technology.
• Novice users can effectively acquire and analyze data using the switchSENSE method.
• switchSENSE enables multi-parameter characterization, including binding kinetics, affinity, enzymatic activity, and conformational changes.

Conclusions:

• The presented SOP serves as a valuable resource for researchers utilizing or considering the switchSENSE technology.
• switchSENSE offers unique advantages for studying molecular interactions with precise control over ligand presentation.
• The technology provides comprehensive insights into molecular binding events and functional assays.