The prion hypothesis: from biological anomaly to basic regulatory mechanism.
The prion hypothesis: from biological anomaly to basic regulatory mechanism.
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DOI:
10.1038/nrm3007
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发表时间:
2010-12
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--
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Prions are unusual proteinaceous infectious agents that are typically associated with a class of fatal degenerative diseases of the mammalian brain. However, the discovery of fungal prions, which are not associated with disease, suggests that we must now consider the impact of these factors on basic cellular physiology in a different light. Fungal prions are epigenetic determinants that can alter a range of cellular processes, including metabolism and gene expression pathways, and these changes can lead to a range of prion-associated phenotypes. The mechanistic similarities between prion propagation in mammals and fungi suggest that prions are not a biological anomaly but instead are a new appreciated and perhaps ubiquitous regulatory mechanism.
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