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Related Concept Videos

Inhibitors Of Virion Release01:25

Inhibitors Of Virion Release

Viral replication and dissemination rely on efficient mechanisms for host cell entry, genome replication, assembly, and release. Influenza viruses, such as types A and B, are negative-sense single-stranded RNA viruses with a segmented genome, that depend on two critical surface glycoproteins to carry out these processes: hemagglutinin (HA) and neuraminidase (NA). HA initiates infection by binding to sialic acid residues on the surface of host epithelial cells, facilitating receptor-mediated...
Inhibitors of Virion Maturation and Assembly01:19

Inhibitors of Virion Maturation and Assembly

As part of their replication cycle, certain viruses synthesize long precursor proteins called polyproteins within infected host cells. In human immunodeficiency virus (HIV), two major polyproteins are produced: Gag and Gag-Pol. The Gag polyprotein supplies the structural components of the virus, while Gag-Pol includes essential viral enzymes such as reverse transcriptase, integrase, and protease. After synthesis, these polyproteins move to the host cell membrane, where they assemble into an...
Enzyme-Linked Immunosorbent Assay01:33

Enzyme-Linked Immunosorbent Assay

In 1971, Peter Perlman and Eva Engvall developed an Enzyme-linked immunosorbent assay (ELISA or EIA). ELISA differs from western blot in that the assays are conducted in microtiter plates or in vivo rather than on an absorbent membrane.
There are many different types of ELISAs, but they all involve an antibody molecule whose constant region binds an enzyme, leaving the variable region free to bind its specific antigen.  Enzyme-substrate reaction allows the antigen to be visualized or quantified.

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Related Experiment Video

Updated: Jun 12, 2026

Production of Human Norovirus Protruding Domains in E. coli for X-ray Crystallography
10:46

Production of Human Norovirus Protruding Domains in E. coli for X-ray Crystallography

Published on: April 19, 2016

(E)-2-styrylchromones as potential anti-norovirus agents.

Joana Rocha-Pereira1, Ricardo Cunha, Diana C G A Pinto

  • 1Serviço de Microbiologia, Faculdade de Farmácia, Universidade do Porto, Rua Aníbal Cunha, Porto, Portugal.

Bioorganic & Medicinal Chemistry
|June 18, 2010
PubMed
Summary

Researchers explored chromone derivatives to find new treatments for norovirus (NoV) infections. Certain (E)-2-styrylchromones showed promising antiviral activity, suggesting potential for developing novel norovirus drugs.

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Last Updated: Jun 12, 2026

Production of Human Norovirus Protruding Domains in E. coli for X-ray Crystallography
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Published on: April 19, 2016

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Quantifying Human Norovirus Virus-like Particles Binding to Commensal Bacteria Using Flow Cytometry
07:02

Quantifying Human Norovirus Virus-like Particles Binding to Commensal Bacteria Using Flow Cytometry

Published on: April 29, 2020

Area of Science:

  • Medicinal Chemistry
  • Virology
  • Drug Discovery

Background:

  • Human noroviruses (NoV) are a leading cause of acute gastroenteritis outbreaks and sporadic cases.
  • Significant morbidity and economic impact associated with norovirus disease.
  • Lack of available antiviral drugs or vaccines necessitates urgent discovery of anti-norovirus agents.

Purpose of the Study:

  • To evaluate the anti-norovirus potential of chromone and (E)-2-styrylchromone derivatives.
  • To identify lead compounds for the development of novel norovirus therapeutics.
  • To gain initial insights into the mechanism of action and structure-activity relationships.

Main Methods:

  • Synthesis and evaluation of 12 structure-related chromone and (E)-2-styrylchromone compounds.
  • Utilized murine norovirus (MNV) as a surrogate model for human norovirus.
  • Determined inhibitory concentrations (IC50) for active compounds.

Main Results:

  • Six (E)-2-styrylchromones exhibited significant anti-norovirus activity.
  • Identified (E)-5-hydroxy-2-styrylchromone and (E)-4'-methoxy-2-styrylchromone as potent compounds with IC50 values around 7µM.
  • Observed a correlation between chemical structure and antiviral activity.

Conclusions:

  • The (E)-2-styrylchromone scaffold is a promising structural class for developing new anti-norovirus drugs.
  • Further exploration and development of these compounds are warranted.
  • These findings contribute to the urgent need for effective norovirus treatments.