Mucin-Inspired Filamentous Sulfated Copolymers Effectively Inhibit Human Respiratory Syncytial Virus (hRSV)...

Area of Science:

• Polymer Chemistry
• Biomaterials Science
• Virology

Background:

• Virucidal compounds are crucial for antiviral therapies.
• Developing safe and effective antiviral agents remains a significant challenge.
• Mucin-inspired materials offer potential for virus interaction and inhibition.

Purpose of the Study:

• To synthesize and characterize novel mucin-inspired amphiphilic statistical copolymers (MIACPs).
• To evaluate the antiviral activity and virucidal potential of these MIACPs against human respiratory syncytial virus (hRSV).
• To investigate the structure-activity relationship of MIACPs in hRSV inhibition and disruption.

Main Methods:

• RAFT polymerization technique for copolymer synthesis.
• Cryo-electron microscopy (cryo-EM) and small-angle neutron scattering (SANS) for structural analysis.
• Serial dilution experiments to assess viral inhibition and virucidal activity.

Main Results:

• MIACPs self-assemble into single-chain filamentous structures resembling natural mucin.
• MIACPs exhibit potent, sulfate-dependent inhibition of hRSV with low IC50 values (≈0.25 µg mL⁻¹).
• MIACPs demonstrate significant virucidal activity, indicating strong binding and disruption of hRSV, a property not seen in homopolymers.

Conclusions:

• Designed statistical copolymers with specific virucidal functionalities can be effective antiviral agents.
• MIACPs represent a promising class of biocompatible materials for hRSV treatment.
• Incorporating virucidal moieties into copolymers enhances their therapeutic potential without sacrificing inhibitory efficacy.