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Updated: Aug 9, 2026
Detection of Abnormal Prion Protein by Immunohistochemistry
Published on: May 5, 2023
Amplified immunohistochemical detection of PrPsc in animal transmissible spongiform encephalopathies using
Anna A Bencsik1, Anthony W Coleman, Sabine O S Debeer
1Agence Française de Sécurité Sanitaire des Aliments, Laboratoire d'Etudes et de Recherches en Pathologie Bovine et Hygiène des Viandes, Unité ATNC, Lyon, Cedex 07-France. a.bencsik@lyon.afssa.fr
Abstract:
Due to its sensitivity, immunohistochemistry (IHC) of abnormal prion protein (PrPsc) is used to study experimental and natural cases of transmissible spongiform encephalopathies (TSEs) such as Creutzfeldt-Jakob disease in humans or scrapie and bovine spongiform encephalopathy (BSE) in animals. The limits of detection are particularly critical when PrPsc IHC is used for diagnostic purposes. In this article, we describe for the first time the use of streptomycin sulfate in IHC, providing a novel original and easy way to amplify specifically PrPsc immunohistochemical detection in natural cases of BSE and scrapie, as well as in experimental TSEs in mice models using two different PrP antibodies.
Insights
This study introduces streptomycin sulfate to enhance prion protein detection in immunohistochemistry (IHC). This novel method improves the sensitivity of diagnosing transmissible spongiform encephalopathies (TSEs) like BSE and scrapie.
Area of Science:
- Veterinary Pathology
- Neuroscience
- Biochemistry
Background:
- Immunohistochemistry (IHC) for abnormal prion protein (PrPsc) is crucial for diagnosing transmissible spongiform encephalopathies (TSEs).
- Accurate detection of PrPsc is critical for diagnosing human (e.g., Creutzfeldt-Jakob disease) and animal (e.g., scrapie, bovine spongiform encephalopathy) TSEs.
- Current IHC methods face limitations in detection sensitivity, impacting diagnostic accuracy.
Purpose of the Study:
- To introduce and evaluate streptomycin sulfate as a novel amplification agent in PrPsc IHC.
- To assess the efficacy of streptomycin sulfate in enhancing PrPsc detection in natural and experimental TSE cases.
- To provide an easy and original method for improving PrPsc immunohistochemical detection.
Main Methods:
- Utilized streptomycin sulfate in immunohistochemistry (IHC) protocols for PrPsc detection.
- Applied the method to natural cases of bovine spongiform encephalopathy (BSE) and scrapie.
- Tested the technique on experimental transmissible spongiform encephalopathies (TSEs) in mouse models using two distinct PrP antibodies.
Main Results:
- Demonstrated that streptomycin sulfate effectively amplifies PrPsc detection via IHC.
- Showcased the method's applicability in both natural animal TSEs (BSE, scrapie) and experimental mouse models.
- Confirmed specific amplification of PrPsc, enhancing diagnostic potential.
Conclusions:
- Streptomycin sulfate offers a novel, simple, and effective approach to amplify PrPsc detection in IHC.
- This technique improves the sensitivity of diagnosing various transmissible spongiform encephalopathies (TSEs).
- The method holds significant potential for diagnostic applications in both veterinary and human medicine.
