We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Nanoplastics and Biostructures: Exploring the Capabilities of MD Computer Simulations
AI summary Read the abstract
Tiny plastic particles from pollution can get inside our bodies and stick to proteins and cell membranes, potentially messing with how they normally work. This review paper uses advanced computer simulations to zoom in on exactly how nanoplastics latch onto and distort these biological building blocks at the atomic level, which helps scientists better understand the health risks—like inflammation and cell damage—linked to plastic exposure without having to rely solely on animal or lab testing.
Micro‑ and nanoplastics (MNPs) represent a class of emerging contaminants whose diminutive dimensions, extensive surface area, and chemical resilience facilitate intimate interactions with biomacromolecules. Owing to their ability to traverse biological barriers, MNPs accumulate in tissues and directly engage proteins, nucleic acids, and lipid assemblies, thereby perturbing structure and function. Nanoplastics, in par-ticular, adsorb onto protein surfaces, disrupt secondary and tertiary conformations, and partition within lipid bilayers. Molecular dynamics (MD) simulations provide atom-istic insight into these processes–adsorption, corona formation, membrane insertion, and conformational modulation-complementing in vitro, in vivo, and epidemiological investigations. Current knowledge on MNP‑induced alterations of protein architecture and membrane integrity is synthesized, integrating toxicological data, biophysical measurements, and MD results. A streamlined MD workflow is presented for nanoplastic–protein and nanoplastic–membrane systems, outlining key structural, thermodynamic, and dynamical observables (e.g., protein RMSD, membrane order parameters, surface coverage, interaction energies) that correlate with experimental endpoints such as enzy-matic inhibition, membrane leakage, oxidative stress, and inflammation. Finally, conceptual and methodological challenges in linking atomistic mechanisms to adverse out-come pathways and risk assessment are discussed.
More Papers Like This
Probing Interactions of Plastic Nanoparticles with Biomolecular Systems via Molecular Simulations
AI summary Read the abstract
Tiny plastic particles from breaking-down trash (called nanoplastics) may be small enough to interact with the proteins, DNA, and cell membranes in our bodies, potentially disrupting how they normally work. This paper reviews computer simulation studies—since lab tests can't fully capture these interactions—that use physics-based models to predict how nanoplastics stick to and affect biological molecules at the atomic level. While this research is still in early, theoretical stages, it's helping scientists understand possible health risks from plastic pollution and explore ways to reduce its impact.
Pollution caused by nanoplastics: adverse effects and mechanisms of interaction via molecular simulation
AI summary Read the abstract
This review used molecular simulation techniques to examine how nanoplastics interact with biological membranes and proteins, finding that NPs alter lipid membrane organization and protein secondary structure, potentially disrupting digestion and nutrient absorption in the gastrointestinal system. The review synthesized evidence that NPs can also adsorb environmental contaminants and potentiate their toxicity through synergistic mechanisms.
Molecular insights into nanoplastics-peptides binding and their interactions with the lipid membrane
AI summary Read the abstract
Using computer simulations, researchers studied how nanoplastics interact with small protein fragments and cell membranes at the molecular level. They found that nanoplastics readily bind to proteins, forming a coating called a protein corona, which changes how the plastics behave when they encounter cell membranes. This research helps explain how nanoplastics might enter human cells, since the protein coating could either help or hinder the particles from crossing biological barriers.
Interaction of polyethylene nanoplastics with the plasma, endoplasmic reticulum, Golgi apparatus, lysosome and endosome membranes: A molecular dynamics study
AI summary Read the abstract
Researchers used computer simulations to study how polyethylene nanoplastics interact with five types of cell membranes in the human body, finding that the plastic particles spontaneously insert themselves into the fatty inner layer of membranes and disrupt normal membrane flexibility. These atomic-level findings help explain how nanoplastics may cause cell damage from the inside.
Evidence for Protein Misfolding in the Presence of Nanoplastics
AI summary Read the abstract
Researchers used molecular dynamics simulations to demonstrate that nanoplastic particles can induce protein misfolding in biological systems. The study represents an early model-based investigation of how nanoplastics may interfere with protein structure and function at the molecular level.
Research digests by email
When a large batch of papers lands in the Atlas, we read through it and send a short write-up of what stood out.