Prions are infectious, self-propagating amyloid-like protein aggregates of mammals and fungi. We have studied aggregation propensities of a yeast prion domain in cell culture to gain insights into general mechanisms of prion replication in mammalian cells. Here, we report the artificial transmission of a yeast prion across a phylogenetic kingdom. HA epitope-tagged yeast Sup35p prion domain NM was stably expressed in murine neuroblastoma cells. Although cytosolically expressed NM-HA remained soluble, addition of fibrils of bacterially produced Sup35NM to the medium efficiently induced appearance of phenotypically and biochemically distinct NM-HA aggregates that were inherited by daughter cells. Importantly, NM-HA aggregates also were infectious to recipient mammalian cells expressing soluble NM-HA and, to a lesser extent, to yeast. The fact that the yeast Sup35NM domain can propagate as a prion in neuroblastoma cells strongly argues that cellular mechanisms support prion-like inheritance in the mammalian cytosol.
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Evidence ID | Analyze ID | Gene/Complex | Systematic Name/Complex Accession | Qualifier | Gene Ontology Term ID | Gene Ontology Term | Aspect | Annotation Extension | Evidence | Method | Source | Assigned On | Reference |
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Evidence ID | Analyze ID | Gene | Gene Systematic Name | Phenotype | Experiment Type | Experiment Type Category | Mutant Information | Strain Background | Chemical | Details | Reference |
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Evidence ID | Analyze ID | Gene | Gene Systematic Name | Disease Ontology Term | Disease Ontology Term ID | Qualifier | Evidence | Method | Source | Assigned On | Reference |
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Evidence ID | Analyze ID | Regulator | Regulator Systematic Name | Target | Target Systematic Name | Direction | Regulation of | Happens During | Regulator Type | Direction | Regulation Of | Happens During | Method | Evidence | Strain Background | Reference |
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Site | Modification | Modifier | Source | Reference |
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Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Allele | Assay | Annotation | Action | Phenotype | SGA score | P-value | Source | Reference | Note |
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Evidence ID | Analyze ID | Interactor | Interactor Systematic Name | Interactor | Interactor Systematic Name | Assay | Annotation | Action | Modification | Source | Reference | Note |
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Complement ID | Locus ID | Gene | Species | Gene ID | Strain background | Direction | Details | Source | Reference |
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Evidence ID | Analyze ID | Dataset | Description | Keywords | Number of Conditions | Reference |
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Evidence ID | Analyze ID | File | Description |
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