Potent Virustatic Polymer-Lipid Nanomimics Block Viral Entry and Inhibit Malaria Parasites In Vivo

Area of Science:

• Nanotechnology
• Infectious Diseases
• Drug Development

Background:

• Infectious diseases present a significant global health challenge, necessitating novel broad-spectrum treatments.
• Current treatments often face limitations in efficacy and scope.

Purpose of the Study:

• To design and evaluate synthetic polymer nanoparticles as broad-spectrum pathogen entry inhibitors.
• To explore the potential of these nanomimics as a versatile platform for infectious disease therapeutics.

Main Methods:

• Synthetic polymer nanoparticles were designed to mimic host cell membranes, creating multivalent nanomimics.
• Nanomimic circulation time was enhanced using polymer-lipid hybrids.
• In vitro and in vivo assays were conducted to assess inhibition of herpes simplex virus 2, SARS-CoV-2, and malaria parasite merozoites.

Main Results:

• Nanomimics demonstrated potent inhibition of herpes simplex virus 2 entry at femtomolar concentrations.
• Higher concentrations were required for severe acute respiratory syndrome coronavirus 2 inhibition.
• Efficient inhibition of malaria parasite merozoite invasion was observed both in vitro and in vivo.

Conclusions:

• The developed nanomimics represent a promising adaptable platform for inhibiting pathogen entry.
• These nanomimics can be further developed as immunomodulators for infectious disease treatment.