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Assessment on interactive prospectives of nanoplastics with plasma proteins and the toxicological impacts of virgin, coronated and environmentally released-nanoplastics
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Researchers found that nanoplastics quickly coat themselves in blood proteins, forming a multi-layered "corona" that changes the proteins' shape and makes them biologically harmful; these protein-coated nanoplastics caused more DNA and cell damage in human blood cells than bare nanoplastics. The study highlights the need to regulate nanoplastics in medical products and better understand how they accumulate in the body.
Recently, the concerns about micro- and nano-plastics (NPs) toxicity have been increasing constantly, however the investigations are quiet meager. The present study provides evidences on the toxicological prospectives of virgin-, coronated- and isolated-NPs on human blood cells and Allium cepa root tip, respectively. Several plasma proteins displayed strong affinity towards NPs and produced multi-layered corona of 13 nm to 600 nm size. The coronated-NPs often attracted each other via non-specific protein-protein attraction which subsequently induced protein-induced coalescence in NPs. In the protein point of view, the interaction caused conformational changes and denaturation of protein thereby turned it as bio-incompatible. The coronated-NPs with increased protein confirmation changes caused higher genotoxic and cytotoxic effect in human blood cells than the virgin-NPs. On the other hand, virgin-NPs and the NPs isolated from facial scrubs hindered the root growth and caused chromosome aberration (ring formation, C-mitotic and chromosomal breaks, etc.) in root of Allium cepa. At the outset, the present study highlights the urgent need of scrutinization and regulation of NPs use in medical applications and pre-requisition of additional studies for assessing the bio-accumulation and bio-magnification of NPs.
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Nanoplastics and Protein Corona - Investigating the Corona Structure and their Biological Impacts
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This PhD thesis investigated how proteins from biological fluids coat the surface of nanoplastics, forming a 'protein corona' that changes how nanoplastics interact with cells and tissues. The protein corona is important because it alters the biological behavior of nanoplastics once they enter the body, potentially affecting how harmful they are.
Protein corona alleviates adverse biological effects of nanoplastics in breast cancer cells
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Scientists discovered that when nanoplastics enter human blood, proteins naturally coat their surface forming a "protein corona," and this coating actually reduces some of the harmful effects of the plastics on breast cancer cells. Without the protein coating, nanoplastics stuck to cell membranes and disrupted important signaling pathways, but coated particles were safely captured inside cellular compartments. This finding suggests that the body may have some natural defense against nanoplastics in the bloodstream, though the long-term effects of this process remain unknown.
Contribution of Cancer-Specific Protein Coronas to the Pro-Tumor Effects of Nanoplastics through Enhanced Cellular Interactions
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Researchers investigated how nanoplastics interact with blood proteins to form a protein coating that changes how the particles behave around cancer cells. They found that this protein coating enhanced the uptake of nanoplastics by cancer cells and could promote tumor-related behaviors. The study raises important questions about whether nanoplastic exposure could influence cancer progression through these protein-mediated interactions.
Impact of Protein Corona Formation and Polystyrene Nanoparticle Functionalisation on the Interaction with Dynamic Biomimetic Membranes Comprising of Integrin
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Researchers studied how polystyrene nanoparticles interact with blood proteins and cell membranes to understand potential health effects of nanoplastic exposure. They found that when blood proteins coat the nanoparticles, forming a so-called protein corona, it actually reduces the particles' ability to damage cell membranes. The study suggests that the body's natural protein coating of nanoplastics may offer some protection against membrane disruption, though the long-term implications remain unclear.
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Scientists studied how proteins in biological fluids coat nanoplastic particles (forming a "protein corona") and how this coating changes the way cells take up and process the plastics. The protein coating actually increased how many nanoplastics entered liver cells and made them harder to clear out, suggesting that once nanoplastics enter the bloodstream, the body's own proteins may make the contamination harder to eliminate.
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