Transcriptomic responses to prion disease in rats

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Abstract

Background: Prions diseases are fatal neurodegenerative diseases of mammals. While the molecular responses to prion infection have been extensively characterized in the laboratory mouse, little is known in other rodents. To explore these responses and make comparisons, we generated a prion disease in the laboratory rat by successive passage beginning with mouse RML prions. Results: We describe the accumulation of rat prions, associated pathology and the transcriptional impact throughout the disease course. Comparative transcriptional profiling between laboratory mice and rats suggests that similar molecular and cellular processes are unfolding in response to prion infection. At the level of individual transcripts, however, variability exists between mice and rats and many genes deregulated by prion infection in mice are not affected in rats. Conclusion: Our findings detail the molecular responses to prion disease in the rat and highlight the usefulness of comparative approaches to understanding neurodegeneration and prion diseases in particular.

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Herbst, A., Ness, A., Johnson, C. J., McKenzie, D., & Aiken, J. M. (2015). Transcriptomic responses to prion disease in rats. BMC Genomics, 16(1). https://doi.org/10.1186/s12864-015-1884-7

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