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An Update on the Current State of SARS-CoV-2 Mac1 Inhibitors
Joseph J O'Connor1, Dana Ferraris2, Anthony R Fehr1
1Department of Molecular Biosciences, University of Kansas, Lawrence, KS 66045, USA.
Abstract:
Non-structural protein 3 (nsp3) from all coronaviruses (CoVs) contains a conserved macrodomain, known as Mac1, that has been proposed as a potential therapeutic target for CoVs due to its critical role in viral pathogenesis. Mac1 is an ADP-ribose binding protein and ADP-ribosylhydrolase that promotes replication and blocks IFN responses, though the precise mechanisms it uses to carry out these functions remain unknown. Over the past 3 years following the onset of COVID-19, several groups have used high-throughput screening with multiple assays and chemical modifications to create unique chemical inhibitors of the SARS-CoV-2 Mac1 protein. Here, we summarize the current efforts to identify selective and potent inhibitors of SARS-CoV-2 Mac1.
Insights
Scientists are developing new drugs targeting the SARS-CoV-2 Mac1 protein, crucial for coronavirus replication and immune evasion. This research focuses on creating selective and potent chemical inhibitors for COVID-19 therapeutics.
Area of Science:
- Virology
- Drug Discovery
- Biochemistry
Background:
- Coronaviruses (CoVs) possess a conserved macrodomain (Mac1) in non-structural protein 3 (nsp3).
- The Mac1 domain is vital for viral pathogenesis, replication, and blocking interferon responses.
- Its precise mechanisms of action remain largely unelucidated.
Purpose of the Study:
- To summarize current research efforts focused on identifying inhibitors of the SARS-CoV-2 Mac1 protein.
- To highlight the development of selective and potent chemical inhibitors for therapeutic applications.
Main Methods:
- High-throughput screening assays have been employed to identify potential inhibitors.
- Chemical modifications are being utilized to refine and enhance inhibitor properties.
Main Results:
- Several chemical inhibitors targeting SARS-CoV-2 Mac1 have been developed.
- These inhibitors show potential for therapeutic intervention against COVID-19.
Conclusions:
- The SARS-CoV-2 Mac1 protein represents a promising therapeutic target for combating COVID-19.
- Ongoing research is yielding selective and potent inhibitors with potential clinical applications.
