Related Experiment Video

Updated: Dec 13, 2025

Screening and Isolation of C-Glycoside-Cleaving Intestinal Bacteria
06:38

Screening and Isolation of C-Glycoside-Cleaving Intestinal Bacteria

Published on: February 28, 2025

584

Flavonoids with inhibitory activity against SARS-CoV-2 3CLpro

Seri Jo1, Suwon Kim1, Dae Yong Kim2

  • 1College of Pharmacy, Graduates School of Pharmaceutical Sciences, Ewha W. University, Seoul, Republic of Korea.

Journal of Enzyme Inhibition and Medicinal Chemistry
|August 5, 2020
PubMed

Insights

Certain flavonoids, including baicalin, herbacetin, and pectolinarin, show potential as inhibitors against the SARS-CoV-2 main protease (3CLpro). This research identifies key compounds for developing new antiviral agents and health supplements to combat COVID-19.

Area of Science:

  • Biochemistry
  • Pharmacology
  • Virology

Background:

  • The COVID-19 pandemic necessitates the development of effective antiviral treatments.
  • Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) main protease (3CLpro) is a critical target for antiviral drug discovery.
  • Flavonoids have demonstrated inhibitory activity against SARS-CoV 3CLpro, suggesting potential for SARS-CoV-2.

Purpose of the Study:

  • To identify flavonoids that inhibit the proteolytic activity of SARS-CoV-2 3CLpro.
  • To investigate the binding modes and affinities of potential flavonoid inhibitors using computational methods.
  • To suggest structural scaffolds for designing novel antiviral agents targeting SARS-CoV-2.

Main Methods:

  • Screening of a flavonoid library for inhibitory activity against SARS-CoV-2 3CLpro.
  • Utilizing *in silico* molecular docking studies to analyze binding interactions.
  • Comparing docking results with known interactions against SARS-CoV 3CLpro.

Main Results:

  • Baicalin, herbacetin, and pectolinarin were identified as inhibitors of SARS-CoV-2 3CLpro.
  • Herbacetin and pectolinarin exhibited binding modes similar to those observed with SARS-CoV 3CLpro.
  • Baicalin demonstrated effective inhibition with a distinct binding mode, suggesting unique inhibitory mechanisms.

Conclusions:

  • Baicalin, herbacetin, and pectolinarin are promising candidates for developing SARS-CoV-2 antiviral therapies.
  • The identified flavonoids provide valuable scaffolds for designing potent 3CLpro inhibitors.
  • This research supports the development of antiviral agents, health foods, and dietary supplements for managing SARS-CoV-2 infections.
Keywords:
FRETSARS-CoV 3CL proteaseantiviralflavonoidinhibitory compounds

More Related Videos

Early Viral Entry Assays for the Identification and Evaluation of Antiviral Compounds09:29

Early Viral Entry Assays for the Identification and Evaluation of Antiviral Compounds

Published on: October 29, 2015

30.7K
Live Imaging and Quantification of Viral Infection in K18 hACE2 Transgenic Mice Using Reporter-Expressing Recombinant SARS-CoV-208:41

Live Imaging and Quantification of Viral Infection in K18 hACE2 Transgenic Mice Using Reporter-Expressing Recombinant SARS-CoV-2

Published on: November 5, 2021

3.2K

Related Concept Videos

Inhibition of Cdk Activity02:34

Inhibition of Cdk Activity

The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
5.4K
Antimicrobial Effectiveness01:28

Antimicrobial Effectiveness

The effectiveness of antimicrobial agents depends on various factors influencing their ability to eliminate microbial populations. Larger microbial populations require more time for complete eradication, emphasizing the importance of population size analysis when evaluating antimicrobial efficacy.Microbial resistance to antimicrobial agents varies significantly. Highly resilient microorganisms include endospores, gram-negative bacteria, and non-enveloped viruses, while prions are exceptionally...
823
Subviral Agents01:29

Subviral Agents

Subviral agents are infectious entities that resemble viruses but lack one or more viral components, such as a capsid or essential replication machinery. These agents include viroids, prions, and satellites, each possessing distinct structural and functional characteristics that influence their mode of infection and replication.Viroids are the simplest subviral agents, consisting of circular, single-stranded RNA molecules without a protein coat. They exclusively infect plants, relying entirely...
362
Enzyme Inhibition01:30

Enzyme Inhibition

Inhibitors are molecules that reduce enzyme activity by binding to the enzyme. In a normally functioning cell, enzymes are regulated by a variety of inhibitors. Drugs and other toxins can also inhibit enzymes. Some inhibitors bind to the enzyme’s active site, while others inhibit enzymatic activity by binding to other sites on the protein structure.
89.8K
Cancer Prevention02:59

Cancer Prevention

Several factors can increase the risk of cancer in an individual. About 50% of cancer cases can be prevented by adopting a healthy lifestyle, regular exercise, eating healthy, and following a modest cancer prevention diet. Epidemiological studies have consistently shown that populations with vegetable and fruit-rich diets have reduced the incidence of cancer. On the other hand, populations who have a diet rich in animal fat, red meat, junk food, or high calories are predisposed to cancer.
Some...
7.5K
Eukaryotic Transcription Inhibitors01:52

Eukaryotic Transcription Inhibitors

Certain biochemical processes, such as embryonic development and cell growth regulation, depend on the repression of specific genes. DNA binding proteins known as eukaryotic transcription inhibitors regulate the repression of gene expression in eukaryotes. The presence of these inhibitors at the required location and time in the cell is triggered by the presence of hormones and additional signals from other cells.
Eukaryotic transcription inhibitors usually contain two distinct domains, a...
10.8K