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Zhang R, Yan H, Zhou J, Liu X, Chen Y. Invalidation of geraniin as a potential inhibitor against SARS-CoV-2 main protease. Nat Prod Res 2024; 38:2078-2081. [PMID: 37533400 DOI: 10.1080/14786419.2023.2241973] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2023] [Accepted: 07/19/2023] [Indexed: 08/04/2023]
Abstract
Recently, geraniin has been identified as a potent antiviral agent targeting SARS-CoV-2 main protease (Mpro). Considering the potential of geraniin in COVID-19 treatment, a stringent validation for its Mpro inhibition is necessary. Herein, we rigorously evaluated the in vitro inhibitory effect of geraniin on Mpro using the fluorescence resonance energy transfer (FRET), fluorescence polarization (FP), and dimerization-dependent red fluorescent protein (ddRFP) assays. Our data indicate that geraniin is not a potential inhibitor against Mpro based on the results from a set of in vitro assays. These results suggest a stringent in vitro validation with diverse biochemical assays is essential for the discovery of Mpro inhibitors, and the fluorescence quenching effect caused by natural products should be considered when evaluating Mpro inhibitors.
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Affiliation(s)
- Rui Zhang
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, P. R. China
| | - Haohao Yan
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, P. R. China
| | - Jiahao Zhou
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, P. R. China
| | - Xiaoping Liu
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, P. R. China
| | - Yunyu Chen
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, P. R. China
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2
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Zhang R, Zhou J, Yan H, Liu X, Chen Y. Chrysin 7-O-β-D-glucuronide is not a potential inhibitor against SARS-CoV-2 main protease. Int J Antimicrob Agents 2024; 63:107136. [PMID: 38460738 DOI: 10.1016/j.ijantimicag.2024.107136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2023] [Revised: 02/05/2024] [Accepted: 03/01/2024] [Indexed: 03/11/2024]
Affiliation(s)
- Rui Zhang
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, China
| | - Jiahao Zhou
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, China
| | - Haohao Yan
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, China
| | - Xiaoping Liu
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, China
| | - Yunyu Chen
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, China.
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3
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Zhang R, Zhou J, Yan H, Liu X, Shang C, Chen Y. Manidipine is not a potential inhibitor against SARS-CoV-2 main protease. Antimicrob Agents Chemother 2024; 68:e0129723. [PMID: 38294235 PMCID: PMC10916385 DOI: 10.1128/aac.01297-23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2024] Open
Affiliation(s)
- Rui Zhang
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, China
| | - Jiahao Zhou
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, China
| | - Haohao Yan
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, China
| | - Xiaoping Liu
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, China
| | - Chao Shang
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Yunyu Chen
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, China
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4
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Zhang R, Yan H, Zhou J, Yan G, Liu X, Shang C, Chen Y. Improved fluorescence-based assay for rapid screening and evaluation of SARS-CoV-2 main protease inhibitors. J Med Virol 2024; 96:e29498. [PMID: 38436148 DOI: 10.1002/jmv.29498] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Revised: 02/07/2024] [Accepted: 02/20/2024] [Indexed: 03/05/2024]
Abstract
The outbreak of coronavirus disease 2019 (COVID-19) pandemic caused by the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is a global threat to human health. In parallel with vaccines, efficacious antivirals are urgently needed. SARS-CoV-2 main protease (Mpro) is an attractive drug target for antiviral development owing to its key roles in virus replication and host immune evasion. Due to the limitations of currently available methods, the development of novel high-throughput screening assays is of the highest importance for the discovery of Mpro inhibitors. In this study, we first developed an improved fluorescence-based assay for rapid screening of Mpro inhibitors from an anti-infection compound library using a versatile dimerization-dependent red fluorescent protein (ddRFP) biosensor. Utilizing this assay, we identified MG-101 as a competitive Mpro inhibitor in vitro. Moreover, our results revealed that ensitrelvir is a potent Mpro inhibitor, but baicalein, chloroquine, ebselen, echinatin, and silibinin are not. Therefore, this robust ddRFP assay provides a faithful avenue for rapid screening and evaluation of Mpro inhibitors to fight against COVID-19.
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Affiliation(s)
- Rui Zhang
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, China
| | - Haohao Yan
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, China
| | - Jiahao Zhou
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, China
| | - Gangan Yan
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, China
| | - Xiaoping Liu
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, China
| | - Chao Shang
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, China
| | - Yunyu Chen
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, China
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5
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Yan H, Zhang R, Yan G, Liu X, Li N, Chen Y. Validation of baicalein and oridonin as nonspecific SARS-CoV-2 main protease inhibitors. Phytother Res 2024; 38:1161-1164. [PMID: 37042347 DOI: 10.1002/ptr.7829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2023] [Revised: 03/27/2023] [Accepted: 03/28/2023] [Indexed: 04/13/2023]
Affiliation(s)
- Haohao Yan
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, 241002, China
| | - Rui Zhang
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, 241002, China
| | - Gangan Yan
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, 241002, China
| | - Xiaoping Liu
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, 241002, China
| | - Ni Li
- State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100050, China
| | - Yunyu Chen
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, 241002, China
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Zhou J, Zhang R, Yan H, Liu X, Shang C, Chen Y. Evaluation of natural products from virtual screenings as SARS-CoV-2 main protease inhibitors using combinational experiments. Nat Prod Res 2024:1-4. [PMID: 38189351 DOI: 10.1080/14786419.2023.2301466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 12/26/2023] [Indexed: 01/09/2024]
Abstract
Recently, andrographolide, kaempferol, maslinic acid, rutin, and schaftoside have been identified as potent SARS-CoV-2 main protease (Mpro) inhibitors via molecular docking studies. However, no comprehensive in vitro testing of these compounds against Mpro has been conducted. In this study, we rigorously evaluated the in vitro inhibition of Mpro by these compounds using combinational experiments, including fluorescence resonance energy transfer (FRET), fluorescence polarization (FP), and dimerization-dependent red fluorescent protein (ddRFP) assays. Our data revealed that these compounds are not Mpro inhibitors based on the results from a set of in vitro assays. These results suggest that an efficient combination of a molecular docking approach and an experimental assay is essential for the discovery of Mpro inhibitors in the future.
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Affiliation(s)
- Jiahao Zhou
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, P. R. China
| | - Rui Zhang
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, P. R. China
| | - Haohao Yan
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, P. R. China
| | - Xiaoping Liu
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, P. R. China
| | - Chao Shang
- Changchun Veterinary Research Institute, Chinese Academy of Agricultural Sciences, Changchun, P. R. China
| | - Yunyu Chen
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, P. R. China
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Zhang R, Yan H, Yan G, Liu X, Chen Y. Letter to the Editor: Repurposing Tafenoquine as a Potential Inhibitor Against Severe Acute Respiratory Syndrome Coronavirus 2 Main Protease via a Fluorescence Polarization Assay. Assay Drug Dev Technol 2023; 21:369-371. [PMID: 37930848 DOI: 10.1089/adt.2023.103] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2023] Open
Affiliation(s)
- Rui Zhang
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, China
| | - Haohao Yan
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, China
| | - Gangan Yan
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, China
| | - Xiaoping Liu
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, China
| | - Yunyu Chen
- Institute for Drug Screening and Evaluation, Wannan Medical College, Wuhu, China
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