Open AccessIn vitro detection of haematogenous prions in white-tailed deer orally dosed with low concentrations of chronic wasting disease
Author(s) -
Erin McNulty,
Amy V. Nalls,
Randy Xun,
Nathaniel D. Denkers,
Edward A. Hoover,
Candace K. Mathiason
Publication year - 2020
Publication title -
journal of general virology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.55
H-Index - 167
eISSN - 1465-2099
pISSN - 0022-1317
DOI - 10.1099/jgv.0.001367
Subject(s) - chronic wasting disease , in vitro , pathogenesis , biology , buffy coat , virology , disease , infectivity , wasting , saliva , virus , immunology , prion protein , pathology , medicine , endocrinology , biochemistry , scrapie
Infectivity associated with prion disease has been demonstrated in blood throughout the course of disease, yet the ability to detect blood-borne prions by in vitro methods remains challenging. We capitalized on longitudinal pathogenesis studies of chronic wasting disease (CWD) conducted in the native host to examine haematogenous prion load by real-time quaking-induced conversion (RT-QuIC) and protein misfolding cyclic amplification. Our study demonstrated in vitro detection of amyloid seeding activity (prions) in buffy-coat cells harvested from deer orally dosed with low concentrations of CWD positive (+) brain (1 gr and 300 ng) or saliva (300 ng RT-QuIC equivalent). These findings make possible the longitudinal assessment of prion disease and deeper investigation of the role haematogenous prions play in prion pathogenesis.