Specific Detection of c-Kit Expressed on Human Cell Surface by Immunosensor Based on Surface Plasmon Resonance

Area of Science:

• Biomedical Engineering
• Immunotechnology
• Cell Biology

Background:

• Cell surface markers are crucial for cell identification and diagnostics.
• Existing detection methods can suffer from high background noise and low specificity.
• c-Kit is an important cell surface marker found on various cell types.

Purpose of the Study:

• To develop a highly specific immunosensor for detecting c-Kit on cell surfaces.
• To minimize nonspecific binding and enhance signal-to-noise ratio in cell detection.
• To establish a versatile platform for detecting various cell surface markers.

Main Methods:

• Development of a surface plasmon resonance (SPR) based immunosensor.
• Modification of antibody solutions with gelatin prior to immobilization.
• Blocking of the sensor chip surface with gelatin to reduce nonspecific reactions.
• Detection of c-Kit expression on cells.

Main Results:

• The developed immunosensor demonstrated sensitive detection of c-Kit.
• Gelatin modification and blocking significantly decreased nonspecific reactions.
• The method achieved high specificity in cell surface marker detection.
• Successful application in detecting cells expressing c-Kit.

Conclusions:

• The SPR immunosensor with gelatin modification offers a robust and specific method for cell detection.
• This approach effectively reduces nonspecific binding, improving assay reliability.
• The platform shows potential for detecting diverse cell surface markers beyond c-Kit.