Tau protein aggregation associated with SARS-CoV-2 main protease

Author:

Eberle Raphael JosefORCID,Coronado Mônika AparecidaORCID,Gering IanORCID,Korostov Karolina,Stefanski AnjaORCID,Stühler KaiORCID,Kraemer-Schulien VictoriaORCID,Blömeke LaraORCID,Bannach OliverORCID,Willbold DieterORCID

Abstract

AbstractThe primary function of virus proteases is the proteolytic processing of the viral polyprotein. These enzymes can also cleave host cell proteins, which is important for viral pathogenicity, modulation of cellular processes, viral replication, the defeat of antiviral responses and modulation of the immune response. It is known that COVID-19 can influence multiple tissues or organs and that infection can damage the functionality of the brain in multiple ways. After COVID-19 infections, amyloid-β, neurogranin, tau and phosphorylated tau were detected extracellularly, implicating possible neurodegenerative processes.The present study describes the possible induction of protein aggregation by the SARS-CoV-2 3CL protease (3CLpro) possibly relevant in neuropathology, such as aggregation of tau, alpha-synuclein and TPD-43. Further investigations demonstrated that tau was proteolytically cleaved by the viral protease 3CL and, consequently, generated aggregates. However, more evidence is needed to confirm that COVID-19 is able to trigger neurodegenerative diseases.

Publisher

Cold Spring Harbor Laboratory

Reference63 articles.

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