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Related Concept Videos

Real Time RT-PCR02:57

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Real-time reverse transcription-polymerase chain reaction, or Real-time RT-PCR, is an analytical tool used to determine the expression level of target genes. The method involves converting mRNA to complementary DNA with the help of an enzyme known as reverse transcriptase, followed by the PCR amplification of the cDNA. These two processes can be performed simultaneously in a single tube or separately as a two-step reaction.
The real-time quantification of the number of amplified products is...
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Related Experiment Video

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Real-time Quaking-induced Conversion Assay for Detection of CWD Prions in Fecal Material
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Tracking Prions by RT-QuIC: An Update.

Christina D Orrù1, Bradley R Groveman2, Byron Caughey3

  • 1Laboratory of Neurological Infections and Immunity, Rocky Mountain Laboratories, Division of Intramural Research, National Institute of Allergy and Infectious Disease, National Institutes of Health, Hamilton, MT, USA. christina.orru@nih.gov.

Sub-Cellular Biochemistry
|September 26, 2025
PubMed
Summary
This summary is machine-generated.

Real-time quaking-induced conversion (RT-QuIC) assays offer highly sensitive and specific detection of prions for diagnosing prion diseases. Recent advancements expand the application of these assays in research, surveillance, and clinical settings.

Keywords:
DiagnosticsEar punchesPreclinical detectionPregnancyPrionsQuantitationRT-QuICSeed amplification assaySkinSolid surfacessCJD subtypes

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Area of Science:

  • Biochemistry
  • Neuroscience
  • Veterinary Medicine

Background:

  • Prion diseases are fatal neurodegenerative disorders caused by misfolded prion proteins.
  • Current diagnostic methods for prion diseases can be slow, invasive, or lack sensitivity.
  • Prion seed amplification assays (SAA) have emerged as promising tools for early and accurate detection.

Purpose of the Study:

  • To summarize recent advancements in prion seed amplification assays, specifically real-time quaking-induced conversion (RT-QuIC).
  • To highlight the expanding applications of RT-QuIC in research, surveillance, and clinical diagnostics for prion diseases.
  • To discuss ongoing developments and future directions for RT-QuIC technology.

Main Methods:

  • Real-time quaking-induced conversion (RT-QuIC) assays.
  • Ultrasensitive detection of misfolded prion proteins.
  • Application in various biological matrices (e.g., cerebrospinal fluid, blood, tissue).

Main Results:

  • RT-QuIC assays demonstrate high sensitivity and specificity for prion detection.
  • The assays are increasingly practical for widespread use in research and diagnostics.
  • Significant progress has been made in broadening RT-QuIC applications across different fields.

Conclusions:

  • RT-QuIC assays are a powerful tool for the ultrasensitive and specific detection of prions.
  • The technology is rapidly advancing, enabling broader applications in prion disease research and diagnostics.
  • Continued development promises improved diagnostic capabilities and surveillance strategies for prion diseases.