Biosensor for Detecting SARS-CoV-2 Spike Protein
Author Information
Author(s): Diego Quezada, Beatriz Herrera, Rodrigo Santibáñez, Juan Luis Palma, Esteban Landaeta, Claudio A. Álvarez, Santiago Valenzuela, Kevin Cobos-Montes, David Ramírez, Paula A. Santana, Manuel Ahumada
Primary Institution: Instituto de Ciencias Aplicadas, Facultad de Ingeniería, Universidad Autónoma de Chile
Hypothesis
Can an ACE2 peptide-mimic-based electrochemical biosensor effectively detect SARS-CoV-2 spike protein?
Conclusion
The developed biosensor can detect SARS-CoV-2 spike protein with a detection limit of 45.08 pg mL−1 and a rapid response time of 3 minutes.
Supporting Evidence
- The sensor achieved a detection limit of 45.08 pg mL−1, significantly lower than many previously reported values.
- The response time of the sensor is only 3 minutes, making it faster than many existing methods.
- Molecular dynamics simulations indicated stable binding interactions between the spike protein and the sensor surface.
Takeaway
Scientists created a special sensor that can quickly find a part of the virus that causes COVID-19, helping to test for the virus faster.
Methodology
The sensor was developed using a graphite electrode modified with an ACE2 peptide-mimic, and detection was performed using electrochemical impedance spectroscopy.
Limitations
The sensor has only been tested in a simulated environment and not with the complete virus or in complex biological samples.
Statistical Information
P-Value
p<0.05
Digital Object Identifier (DOI)
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