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Updated: Jul 18, 2025
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A Fluorogenic Peptide Cleavage Assay to Screen for Proteolytic Activity: Applications for coronavirus spike protein activation
Published on: January 9, 2019
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Tau protein aggregation associated with SARS-CoV-2 main protease
Raphael Josef Eberle1,2, Mônika Aparecida Coronado1, Ian Gering1
1Institute of Biological Information Processing (IBI-7: Structural Biochemistry), Forschungszentrum Jülich, Jülich, Germany.
Plos One
|August 21, 2023
Summary
The SARS-CoV-2 3CL protease may induce tau aggregation, a process implicated in neurodegeneration. This viral protease cleaves tau, potentially contributing to neuropathology following COVID-19 infection.
Area of Science:
- Virology
- Neuroscience
- Biochemistry
Background:
- Virus proteases cleave viral polyproteins and host proteins, impacting viral pathogenicity and cellular functions.
- COVID-19 infection is known to affect multiple organs, including the brain, with potential links to neurodegenerative processes.
Purpose of the Study:
- To investigate the potential role of SARS-CoV-2 3CL protease in inducing tau aggregation.
- To explore the implications of this interaction in COVID-19-associated neuropathology.
Main Methods:
- The study focused on the enzymatic activity of the SARS-CoV-2 3CL protease.
- Investigated the cleavage of tau protein by the viral protease.
Main Results:
- SARS-CoV-2 3CL protease was shown to proteolytically cleave tau protein.
- This cleavage resulted in the generation of tau aggregates.
Conclusions:
- The SARS-CoV-2 3CL protease may induce tau aggregation, a key feature of neurodegenerative diseases.
- Further research is required to confirm if COVID-19 infection triggers neurodegenerative diseases through this mechanism.
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