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Related Experiment Videos

A decrease in Sendai virus infection potency by interactions with cationic thermo-responsive polymers.

M Yokoyama1, T Okano

  • 1Institute of Biomedical Engineering, Tokyo Women's Medical University, Japan.

Journal of Biomaterials Science. Polymer Edition
|October 6, 2001
PubMed
Summary
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A novel synthetic polymer, P(IP-27DA-16BM), effectively reduces Sendai virus (HVJ) infectivity. This virus-inactivating agent shows high selectivity and temperature-dependent efficacy, indicating potential for practical applications.

Area of Science:

  • Biomaterials Science
  • Virology
  • Polymer Chemistry

Background:

  • Synthetic cationic polymers are explored for antiviral applications.
  • Sendai virus (HVJ) is a model paramyxovirus used in cell culture studies.
  • Cytotoxicity and antiviral efficacy are key parameters for evaluating potential antiviral agents.

Purpose of the Study:

  • To synthesize and evaluate synthetic cationic polymers for their ability to inactivate Sendai virus (HVJ).
  • To determine the optimal conditions for polymer-mediated virus inactivation, including concentration and temperature.
  • To assess the selectivity of the most effective polymer against viral titer reduction versus cell cytotoxicity.

Main Methods:

  • Three synthetic cationic polymers were synthesized and incubated with Sendai virus (HVJ).

Related Experiment Videos

  • Virus infection potency was measured using the plaque assay method on LLCMK2 cells.
  • Cytotoxicity of the polymers on LLCMK2 cells was evaluated.

    • Main Results:

    • Poly(N-isopropylacrylamide-co-N,N-dimethylaminopropyl acrylamide-co-butylmethacrylate) (P(IP-27DA-16BM)) demonstrated significant reduction in HVJ infection potency.
    • Effective virus titer reduction was observed at low polymer concentrations (2 x 10(-4) wt%).
    • Inactivation efficacy was temperature-dependent, with greater reduction above the polymer's phase transition temperature.

    Conclusions:

    • P(IP-27DA-16BM) is a potent and selective agent for inactivating Sendai virus.
    • The polymer exhibits higher selectivity for virus reduction compared to cytotoxicity, outperforming sodium dodecyl sulfate.
    • This synthetic polymer shows promise as a virus-specific inactivating agent.