ArticleScientific reports2022
A field-deployable diagnostic assay for the visual detection of misfolded prions.
Article in Scientific reports, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed, 15 citations in OpenAlex.
- Article
- Bovine Spongiform Encephalopathy: An Integrated Review of Prion Mechanisms, Neuroanatomy, and Control.Veterinary sciences · 2026Review
- Prions and protein aggregates as pathogens, self-propagating structures, biomarkers, and therapeutic targets.Microbiology and molecular biology reviews : MMBR · 2025Review
- Unlocking the Translational Potential of Nanophotonic Biosensors: Perspectives on Application-Guided Design.ACS photonics · 2025Review
- Proof-of-concept for an alternative prion detection method utilizing nanoparticle-enhanced, aptamer-template loop-mediated isothermal amplification.Scientific reports · 2025Article
- Prion Partitioning and Persistence in Environmental Waters.Environmental science & technology · 2025Article
- Tracking Prions by RT-QuIC: An Update.Sub-cellular biochemistry · 2025Review
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Authors and funding
7 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Diagnostic tools for the detection of protein-misfolding diseases (i.e., proteopathies) are limited. Gold nanoparticles (AuNPs) facilitate sensitive diagnostic techniques via visual color change for the identification of a variety of targets. In parallel, recently developed quaking-induced conversion (QuIC) assays leverage protein-amplification and fluorescent signaling for the accurate detection of misfolded proteins. Here, we combine AuNP and QuIC technologies for the visual detection of amplified misfolded prion proteins from tissues of wild white-tailed deer infected with chronic wasting disease (CWD), a prion disease of cervids. Our newly developed assay, MN-QuIC, enables both naked-eye and light-absorbance measurements for detection of misfolded prions. MN-QuIC leverages basic laboratory equipment that is cost-effective and portable, thus facilitating real-time prion diagnostics across a variety of settings. In addition to laboratory-based tests, we deployed to a rural field-station in southeastern Minnesota and tested for CWD on site. We successfully demonstrated that MN-QuIC is functional in a non-traditional laboratory setting by performing a blinded analysis in the field and correctly identifying all CWD positive and CWD not-detected deer at the field site in 24 h, thus documenting the portability of the assay. White-tailed deer tissues used to validate MN-QuIC included medial retropharyngeal lymph nodes, parotid lymph nodes, and palatine tonsils. Importantly, all of the white-tailed deer (n = 63) were independently tested using ELISA, IHC, and/or RT-QuIC technologies and results secured with MN-QuIC were 95.7% and 100% consistent with these tests for positive and non-detected animals, respectively. We hypothesize that electrostatic forces help govern the AuNP/prion interactions and conclude that MN-QuIC has great potential for sensitive, field-deployable diagnostics for CWD, with future potential diagnostic applications for a variety of proteopathies.
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