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Synergistic Effects of Microplastics and Marine Pollutants on the Destabilization of Lipid Bilayers

The Journal of Physical Chemistry B 2024 10 citations ? Citation count from OpenAlex, updated daily. May differ slightly from the publisher's own count.
Jean‐Baptiste Fleury, Vladimir A. Baulin

Summary

Using computer simulations, this study showed that microplastics combined with common marine pollutants can destabilize the lipid membranes that protect our cells. The pollutants attached to microplastic surfaces were more effective at penetrating cell membranes than the pollutants alone. This means microplastics may act as carriers that help harmful chemicals get into cells more easily, increasing their toxic effects.

Microplastics have been detected in diverse environments, including soil, snowcapped mountains, and even within human organs and blood. These findings have sparked extensive research into the health implications of microplastics for living organisms. Recent studies have shown that microplastics can adsorb onto lipid membranes and induce mechanical stress. In controlled laboratory conditions, the behavior and effects of microplastics can differ markedly from those in natural environments. In this study, we investigate how exposure of microplastics to pollutants affects their interactions with lipid bilayers. Our findings reveal that pollutants, such as chemical solvents, significantly enhance the mechanical stretching effects of microplastics. This suggests that microplastics can act as vectors for harmful pollutants, facilitating their penetration through lipid membranes and thus strongly affect their biophysical properties. This research underscores the complex interplay between microplastics and environmental contaminants.

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