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Nanoplastic Stimulates the Amyloidogenesis of Parkinson's Alpha‐Synuclein NACore
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This study found that nanoplastic particles can accelerate the clumping of a protein called alpha-synuclein, which is linked to Parkinson's disease. Using advanced mass spectrometry, researchers showed that nanoplastics sped up the formation of harmful protein clusters and increased their toxicity to brain cells. The findings suggest that nanoplastic exposure could be a factor worth investigating in neurodegenerative disease research.
Environmental plastic wastes are potential health hazards due to their prevalence as well as their versatility in initiating physical, chemical, and biological interactions and transformations. Indeed, recent research has implicated the adverse effects of micro- and nano-plastics, including their neurotoxicity, yet how plastic particulates may impact the aggregation pathway and toxicity of amyloid proteins pertinent to the pathologies of neurological diseases remains unknown. Here, electrospray ionization time-of-flight mass spectrometry (ESI-TOF-MS) is employed to reveal the polymorphic oligomerization of NACore, a surrogate of alpha-synuclein that is associated with the pathogenesis of Parkinson's disease. These data indicate that the production rate and population of the NACore oligomers are modulated by their exposure to a polystyrene nanoplastic, and these cellular assays further reveal an elevated NACore toxicity in microglial cells elicited by the nanoplastic. These simulations confirm that the nanoplastic-NACore association is promoted by their hydrophobic interactions. These findings are corroborated by an impairment in zebrafish hatching, survival, and development in vivo upon their embryonic exposure to the nanoplastic. Together, this study has uncovered the dynamics and mechanism of amyloidogenesis elevated by a nanoplastic trigger, shedding a new light on the neurological burden of plastic pollution.
More Papers Like This
Nanoplastic stimulates the amyloidogenesis of Parkinson's alpha-synuclein NACore
AI summary Read the abstract
Polystyrene nanoplastics accelerate the formation of toxic protein clumps (oligomers) from alpha-synuclein NACore, a protein fragment linked to Parkinson's disease, through hydrophobic binding interactions. Tests in brain immune cells showed increased toxicity, and zebrafish embryos exposed to the nanoplastic showed impaired hatching and survival — providing early mechanistic evidence that nanoplastic pollution may contribute to neurodegenerative disease risk.
Nanoplastic stimulates the amyloidogenesis of Parkinson's alpha-synuclein NACore
AI summary Read the abstract
Polystyrene nanoplastics accelerate the formation of toxic protein clumps (oligomers) from alpha-synuclein NACore, a protein fragment linked to Parkinson's disease, through hydrophobic binding interactions. Tests in brain immune cells showed increased toxicity, and zebrafish embryos exposed to the nanoplastic showed impaired hatching and survival — providing early mechanistic evidence that nanoplastic pollution may contribute to neurodegenerative disease risk.
Anionic nanoplastic contaminants promote Parkinson’s disease–associated α-synuclein aggregation
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Researchers discovered that nanoplastics can enter brain cells and accelerate the clumping of alpha-synuclein, a protein whose buildup is the hallmark of Parkinson's disease. In mice, nanoplastics worsened the spread of this protein pathology across brain regions, including the area that controls movement, suggesting a potential link between nanoplastic pollution and Parkinson's disease risk.
Anionic Nanoplastic Contaminants Promote Parkinson’s Disease-Associated α-Synuclein Aggregation
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Researchers discovered that anionic nanoplastic contaminants can promote the formation and spread of alpha-synuclein protein fibrils, which are associated with Parkinson's disease. The study found that nanoplastics enter neurons, impair lysosomal function, and in mouse models, exacerbate the spread of alpha-synuclein pathology across brain regions, including dopaminergic neurons, highlighting a potential link between nanoplastic exposure and neurodegenerative processes that warrants further investigation.
Micro-nanoplastics and Parkinson’s disease: evidence and perspectives
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Researchers reviewed growing evidence linking micro- and nanoplastic exposure to Parkinson's disease, a degenerative brain condition. Lab studies suggest these particles may accelerate disease by promoting the misfolding of a key brain protein (alpha-synuclein), triggering inflammation, and damaging mitochondria — though large-scale human studies are still needed to establish causation and define safe exposure thresholds.
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