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Related Experiment Videos

Real-time biospecific interaction analysis using surface plasmon resonance and a sensor chip technology.

U Jönsson1, L Fägerstam, B Ivarsson

  • 1Pharmacia Biosensor AB, Uppsala, Sweden.

Biotechniques
|November 1, 1991
PubMed
Summary

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This study introduces a novel biosensor technology using surface plasmon resonance for real-time, label-free analysis of molecular interactions. This advancement aids in understanding biorecognition and molecular function by monitoring complex formation.

Area of Science:

  • Biotechnology
  • Biophysics
  • Analytical Chemistry

Background:

  • Molecular interactions are fundamental to biological processes.
  • Real-time, label-free detection methods are crucial for studying these interactions.
  • Existing technologies may have limitations in sensitivity or dynamic range.

Purpose of the Study:

  • To develop and apply a novel biosensor technology for label-free, real-time molecular interaction studies.
  • To enhance the sensitivity and dynamic range of surface concentration measurements.
  • To facilitate the understanding of biorecognition and molecular function.

Main Methods:

  • Development of a biosensor chip with a gold layer on glass.
  • Derivatization of the sensor chip with a hydrophilic polymer for ligand attachment.

Related Experiment Videos

  • Utilizing surface plasmon resonance (SPR) for label-free detection.

    • Main Results:

    • The biosensor enables label-free studies of molecular interactions in real time.
    • The sensor chip design increases the dynamic range for surface concentration measurements.
    • The technology achieves high sensitivity, measuring surface concentrations down to 10 pg/mm2 with low coefficients of variation (2-5%).

    Conclusions:

    • The developed biosensor technology offers a sensitive and reliable platform for studying molecular interactions.
    • This technology is expected to significantly advance the understanding of biorecognition.
    • Monitoring multi-molecular complex formation will provide insights into the structural basis of molecular function.