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Visualization, Quantification, and Mapping of Immune Cell Populations in the Tumor Microenvironment
Published on: March 25, 2020
Real-time immunohistochemistry analysis of embedded tissue
Lars Gedda1, Hanna Björkelund, Karl Andersson
1Unit of Biomedical Radiation Sciences, Department of Oncology, Radiology and Clinical Immunology, Rudbeck Laboratory, Uppsala University, SE-751 85 Uppsala, Sweden. Lars.Gedda@bms.uu.se
Summary
This study introduces real-time membrane-protein analysis in tissue using LigandTracer technology. It found that standard immunohistochemistry antibody protocols may be suboptimal, highlighting potential for improved accuracy.
Area of Science:
- Biotechnology
- Molecular Biology
- Medical Diagnostics
Background:
- Membrane protein expression analysis in tissues is crucial for diagnostics.
- Immunohistochemistry (IHC) is a common method but can be subjective.
- Quantitative and reproducible methods are needed for accurate protein analysis.
Purpose of the Study:
- To present a novel semi-automatic, real-time method for analyzing membrane-protein expression in tissue sections.
- To evaluate the performance of a commercial anti-HER2 antibody using this new technology.
- To compare the real-time method with traditional immunohistochemistry.
Main Methods:
- Utilized LigandTracer technology for semi-automatic, real-time measurement of protein interactions in tissue.
- Employed a commercial anti-HER2 antibody, typically used for immunohistochemistry.
- Analyzed antibody-tissue interactions directly and quantitatively.
Main Results:
- The commercial anti-HER2 antibody showed sub-optimal interaction with tissue under standard immunohistochemistry recommendations.
- Real-time measurement provided direct and quantitative analysis of membrane-protein binding.
- The LigandTracer method demonstrated potential to overcome limitations of classical immunohistochemistry.
Conclusions:
- Real-time measurement of tissue offers a more direct and quantitative approach to membrane-protein analysis.
- This technology can potentially improve the reproducibility of tissue-based protein expression studies.
- The findings suggest a need to re-evaluate antibody protocols for immunohistochemistry using real-time interaction analysis.
