Special lipids improve mRNA medicine effectiveness and lower immune reactions

PCB-containing lipid nanoparticles (LNPs) demonstrate higher mRNA transfection efficiency than PEG-containing LNPs.

• In vitro studies indicate that PCB-containing LNPs outperform PEG-containing LNPs in mRNA delivery across various cell types.
• In vivo studies in mice show that PCB-containing LNPs have greater therapeutic efficacy compared to PEG counterparts.
• Enhanced endosomal escape is identified as the mechanism behind the improved performance of PCB-containing LNPs.
• PCB formulations present a safe immunotoxicity profile, enabling their use in repeated administrations without loss of efficacy.
• These findings suggest PCB-containing LNPs could serve as a robust mRNA delivery system for potential clinical use.

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