We can't find the internet
Attempting to reconnect
Something went wrong!
Hang in there while we get back on track
Gel-dispersed micro- and nano- polystyrene (PS), polyethylene terephthalate (PET) and polypropylene (PP) impact metabolic parameters in egg-box liver spheroid model.
AI summary Read the abstract
Scientists grew tiny lab-made liver models and exposed them to common plastic particles (from water bottles, packaging, and other everyday plastics) for three weeks to see what happens when liver cells are around microplastics long-term. The plastics didn't kill the liver cells outright, but they did change how the cells produce and use energy, a subtler effect that could add up over time. This matters because it gives researchers a better tool to study how different types of plastic might quietly affect liver health, even without causing obvious damage.
Micro- and nanoplastics (MNPs) represent an emerging class of contaminants, yet their biological impacts remain poorly understood. Mechanistic research comparing polymers such as polypropylene (PP) and polyethylene terephthalate (PET) is challenging because of strong differences in hydrophobicity, buoyancy or sedimentation behavior, size distribution (aggregation) and lack of strong acute cytotoxic effects. This study introduces an innovative in vitro dosing platform with 3D hepatic spheroids, providing a dosimetrically robust model to investigate metabolic and bioenergetic effects of chronic MNP exposure. Gel encapsulation was used to expose spheroids for up to 21 days to MNPs of different composition and size. MNPs accumulated in spheroids with polymer-specific localization. Cytotoxicity was limited, but metabolic profiling revealed consistent bioenergetic shifts. This work highlights the importance of particle size distributions and introduces alginate bead encapsulation as a reproducible dosing strategy for comparing MNPs and defining toxic doses linked to biologically relevant molecular and cellular events.
More Papers Like This
Toxicity of Environmentally Relevant Micro- and Nanoplastic Exposure on Liver Cell Models
AI summary Read the abstract
Scientists tested how tiny plastic particles—shaped like the real-world microplastics found in food and water—affect liver cells in the lab. They found that the type of plastic mattered a lot: bits from PET (common in bottles) and polystyrene (used in foam containers) disrupted the cells' energy-producing machinery, while other plastic types didn't seem to cause harm. This suggests not all microplastics are equally risky to our health, but more research is needed to understand what makes certain plastics more dangerous than others.
Polystyrene nanoplastics elicit early mitochondria-associated phenotypic, metabolic, and functional responses in human hepatocytes
AI summary Read the abstract
Scientists exposed human liver cells to tiny plastic particles (nanoplastics) at levels that didn't kill the cells, but found the cells' "power plants" (mitochondria) were already struggling—burning less fuel and producing less energy—along with other changes in how the cells process fat and nutrients. This matters because it suggests nanoplastics, which have already been found in real human liver tissue, may quietly stress liver cells and disrupt their metabolism even before any visible damage occurs, raising questions about long-term effects of everyday plastic exposure on liver health.
Impact of environmental microplastic exposure on HepG2 cells: unraveling proliferation, mitochondrial dynamics and autophagy activation
AI summary Read the abstract
Lab experiments on human liver cells found that exposure to common microplastics (polyethylene and PET) increased cell growth but also triggered oxidative stress, damaged mitochondria (the cell's energy centers), and activated autophagy -- a process where cells try to clean up internal damage. These findings suggest that microplastics may disrupt normal liver cell function in ways that could have long-term health consequences.
Detection of Time-Dependent Uptake of Microplastics by Joint Utilization of Hepatic Organoids and a 3D-Printed Carrier
AI summary Read the abstract
Scientists grew tiny lab-made liver tissues (organoids) that behave more like real livers than flat cell cultures, and found they absorbed surprising amounts of microplastic particles, nearly 40% within 48 hours. This uptake damaged liver cells and impaired their energy-producing mitochondria, suggesting microplastics may pose a real risk to liver health, not just a theoretical one.
Cytotoxic Effects of Carboxyl-Modified Polystyrene Microplastics: Differential Effects on Hepatoma Cells and Immortalized Hepatocytes
AI summary Read the abstract
In a lab study, tiny plastic particles (microplastics) caused significant damage to liver cancer cells, building up inside them and disrupting their energy-producing structures, while healthy liver cells largely shrugged off the same exposure. This suggests microplastics may not affect all cells in the body equally, and more research is needed to understand what this means for people with liver disease or cancer versus healthy individuals. It's important to note this was a cell-culture study, not a study in living humans, so more research is needed before drawing conclusions about real-world health risks.
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.