Critical parameters in surface plasmon resonance biosensor development: The interaction between estrogen receptor and...

Area of Science:

• Environmental Science
• Analytical Chemistry
• Biotechnology

Background:

• Estrogenic compounds are environmental contaminants of concern due to their low-concentration activity.
• Detection methods often rely on the interaction between Estrogen Receptors (ER) and Estrogen Response Elements (ERE) DNA sequences.
• Surface Plasmon Resonance (SPR) offers label-free detection of molecular interactions, converting biological signals into quantifiable electrical signals.

Purpose of the Study:

• To assess signal variations using SPR in the presence of estrogenic compounds.
• To evaluate key parameters for developing SPR-based biosensors for estrogenic compound detection.
• To focus on surface activation, protein-DNA binding conditions, and Estrogen Response Element (ERE) regeneration.

Main Methods:

• Utilized Surface Plasmon Resonance (SPR) as an optical transducer for label-free detection.
• Developed a biosensor integrating physical properties with biological recognition (ER/ERE interactions).
• Investigated critical steps including surface activation, DNA sequence binding, ER preparation, binding characterization, and surface regeneration.

Main Results:

• Demonstrated the feasibility of using SPR to detect estrogenic compounds via ER/ERE interactions.
• Evaluated and summarized literature on usual conditions for biosensor fabrication steps.
• Provided an assessment of key parameters influencing biosensor performance.

Conclusions:

• SPR-based biosensors show promise for detecting estrogenic compounds.
• Optimization of surface activation, protein-DNA binding, and regeneration are crucial for effective biosensor development.
• This approach contributes to improved environmental monitoring of estrogenic contaminants.