MXenes-Au NPs modified electrochemical biosensor for multiple exosome surface proteins analysis.

Area of Science:

• Biomedical Engineering
• Nanotechnology
• Cancer Diagnostics

Background:

• Exosome-carried proteins are promising non-invasive biomarkers for cancer.
• Early cancer detection and precise diagnosis are critical challenges in oncology.
• Distinguishing subtle protein differences in exosomes is key for accurate diagnostics.

Purpose of the Study:

• To develop an electrochemical biosensor for detecting exosomal proteins.
• To assess the differential expression of EGFR, CEA, and EpCAM proteins.
• To enable sensitive detection of tumor biomarkers from various cancer cell lines.

Main Methods:

• Modification of an electrochemical biosensor with MXenes and Gold Nanoparticles (Au NPs).
• Utilizing the biosensor to detect specific exosomal proteins (EGFR, CEA, EpCAM).
• Testing the sensor's efficacy with exosomes derived from multiple cancer cell lines (A549, MCF-7, PC-3, HeLa).

Main Results:

• The developed biosensor demonstrated sensitive detection of tumor biomarkers.
• The sensor successfully identified exosomal proteins from diverse cancer cell origins.
• The study confirmed the potential of the biosensor for differential protein expression analysis.

Conclusions:

• The MXene-Au NP-based electrochemical biosensor is effective for detecting exosomal cancer biomarkers.
• This technology holds significant promise for early and accurate cancer diagnosis.
• The biosensor's ability to differentiate protein expression is crucial for clinical applications.