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Cryo-Gel embedding compound for renal biopsy biobanking
Malou L H Snijders1, Marina Zajec2,3, Laurens A J Walter4
1Department of Pathology, Erasmus MC, Rotterdam, The Netherlands. m.snijders@erasmusmc.nl.
Scientific Reports
|October 26, 2019
Summary
Cryo-Gel offers superior renal tissue preservation for diagnostics and research. This embedding compound enables mass spectrometry analysis without interfering polymers, unlike Optimal Cutting Temperature (OCT) compound.
Area of Science:
- Biomedical research
- Tissue biobanking
- Proteomics
Background:
- Optimal preservation and biobanking of renal tissue are crucial for diagnostics and research.
- Optimal Cutting Temperature (OCT) compound is a common embedding medium but interferes with mass spectrometry (MS).
Purpose of the Study:
- To investigate Cryo-Gel as an alternative embedding compound for renal biopsies.
- To assess Cryo-Gel's compatibility with proteomics and standard diagnostic techniques.
Main Methods:
- Renal biopsies were snap-frozen using Cryo-Gel, OCT, and without embedding medium.
- Tissues were evaluated for morphology, immunohistochemistry, immunofluorescence, RNA/DNA quality, and MS analysis.
- Additional normal tissues (spleen, skin, liver, colon) were analyzed.
Main Results:
- Cryo-Gel provided good morphological preservation and did not interfere with immunohistochemistry or immunofluorescence.
- RNA and DNA quality were well-maintained in Cryo-Gel embedded tissues.
- Mass spectrometry identified a similar number of proteins, but OCT polymers caused signal interference, which Cryo-Gel avoided.
Conclusions:
- Cryo-Gel is an excellent alternative to OCT for embedding renal biopsies.
- Cryo-Gel facilitates proteomic analysis while maintaining diagnostic and research quality.
- This method is preferable for renal biopsies, especially when proteomic analysis is required.
