ArticleInternational journal of biological sciences2025
Polystyrene Nanoplastics Exacerbate HFD-induced MASLD by Reducing Cathepsin Activity and Triggering Large Vacuole Formation via Impaired Lysosomal Acidification.
Article in International journal of biological sciences, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.
What it found
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The trial behind it
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Who cites it
6 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Microplastics in focus: a silent disruptor of liver health- a systematic review.Frontiers in pharmacology · 2025Pooled it
- Interaction of polystyrene nanoplastics andVirulence · 2026Article
- Developmental Environmental Chronotoxicity by Polystyrene Nanoplastics Exacerbates High-Fat Diet-Induced Pediatric MAFLD Through Circadian Disruption and Mitochondrial Dysfunction.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- Hepatocyte Models for Metabolic Dysfunction-Associated Steatotic Liver Disease: A Comparative Analysis of Non-HepG2 Cell Models.International journal of molecular sciences · 2026Review
- The endo-lysosomal-lipid axis: bidirectional interactions between membrane trafficking dysfunction and lipid metabolic disorders.Frontiers in cell and developmental biology · 2026Review
- Pathogenesis of Micro/Nanoplastics in Mammalian Systems: Gut to Systemic Multi-Organ Dysfunction.Research (Washington, D.C.) · 2026Review
Corrections and comments
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Authors and funding
11 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Environmental nanoplastics (NPs) have harmful effects on health. This study investigated the effects of polystyrene (PS) NPs on steatosis and fatty liver disease. PS-NP oral administration, in conjunction with a high-fat diet (HFD), synergistically exacerbated the symptoms of steatosis in mice, leading to increased alanine transaminase, aspartate aminotransferase, and cholesterol levels; no effects were observed with PS-NPs on a normal chow diet. Transcriptome analysis unveiled that PS-NPs interfered with actin organization, cell-cell adhesion, PPAR signaling, and lipid metabolism. In HepaRG cells, PS-NPs rapidly entered by inducing actin rearrangement, resulting in the formation of numerous small cytoplasmic vesicles. This treatment led to an augmented number of acidic organelles, leading to development and buildup of large vacuoles, indicative of enlarged pre-lysosomal and lysosomal compartments. PS-NP exposure hampered p62 degradation, leading to LC3B accumulation and decreased cathepsin B and D activity. Additionally, PS-NP exposure resulted in accumulation of lipid droplets and elevated expression of lipogenesis-, transport-, and storage-related genes. These findings suggest that excessive endocytosis driven by PS-NPs worsens MASLD in HFD through accumulation of lysosomes and large vacuoles with reduced cathepsin activity.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.