Role of donor genotype in RT-QuIC seeding activity of chronic wasting disease prions using human and bank vole substrates

Autoři: Soyoun Hwang aff001;  Justin J. Greenlee aff001;  Eric M. Nicholson aff001
Působiště autorů: United States Department of Agriculture, Agricultural Research Service, National Animal Disease Center, Virus and Prion Research Unit, Ames, Iowa, United States of America aff001
Vyšlo v časopise: PLoS ONE 15(1)
Kategorie: Research Article
prolekare.web.journal.doi_sk: 10.1371/journal.pone.0227487


Chronic wasting disease is a transmissible spongiform encephalopathy of cervids. This fatal neurodegenerative disease is caused by misfolding of the cellular prion protein (PrPC) to pathogenic conformers (PrPSc), and the pathogenic forms accumulate in the brain and other tissues. Real-time Quaking Induced Conversion (RT-QuIC) can be used for the detection of prions and for prion strain discrimination in a variety of biological tissues from humans and animals. In this study, we evaluated how either PrPSc from cervids of different genotypes or PrPSc from different sources of CWD influence the fibril formation of recombinant bank vole (BV) or human prion proteins using RT-QuIC. We found that reaction mixtures seeded with PrPSc from different genotypes of white-tailed deer or reindeer brains have similar conversion efficiency with both substrates. Also, we observed similar results when assays were seeded with different sources of CWD. Thus, we conclude that the genotypes of all sources of CWD used in this study do not influence the level of conversion of PrPC to PrPSc.

Klíčová slova:

Deer – Animal prion diseases – Chronic wasting disease – Prions – Mules – Reindeer – Recombination reactions – Automated fluorescent genotyping


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