Journal
TOXICOLOGICAL SCIENCES
Volume 158, Issue 1, Pages 3-13Publisher
OXFORD UNIV PRESS
DOI: 10.1093/toxsci/kfx074
Keywords
exosome; cell-to-cell transmission; neurodegeneration; environmental toxins; cancer; protein aggregation
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Funding
- National Institutes of Health R01 grants [ES19267, ES10586, ES026892, NS074443]
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Chronic exposure to environmental toxins has been known to initiate or aggravate various neurological disorders, carcinomas and other adverse health effects. Uptake by na < ve cells of pathogenic factors such as danger-associated molecules, mRNAs, miRNAs or aggregated proteins leads to disruption in cellular homeostasis further resulting in inflammation and disease propagation. Although early research tended to focus solely on exosomal removal of unwanted cellular contents, more recent reports indicate that these nano-vesicles play an active role in intercellular signaling. Not only is the exosomal cargo cell type-specific, but it also differs between healthy and dying cells. Moreover, following exosome uptake by na < ve cells, the contents from these vesicles can alter the fate of recipient cells. Since exosomes can traverse long distances, they can influence distantly located cells and tissues. This review briefly explores the role played by environmental toxins in stimulating exosome release in the context of progressive neurodegenerative diseases such as Alzheimer's, Parkinson's, and Huntington's, as well as certain cancers such as lung, liver, ovarian, and tracheal carcinomas.
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