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Proteomic Sample Preparation from Formalin Fixed and Paraffin Embedded Tissue
Published on: September 2, 2013
Formalin-fixed paraffin-embedded tissue: The holy grail of clinical proteomics
Valérie Broeckx1, Lise Peeters, Evelyne Maes
1Functional Genomics and Proteomics Unit, KU Leuven, Leuven, Belgium.
Insights
Formalin-fixed paraffin-embedded (FFPE) tissues are a viable alternative for omics studies when fresh frozen tissue is unavailable. Standardized FFPE preparation protocols ensure reproducible results in multicenter clinical proteomics research.
Area of Science:
- Biotechnology
- Proteomics
- Clinical Research
Background:
- Omics technologies are crucial for understanding disease mechanisms, with fresh frozen tissue being the preferred biological material.
- Variability in storage conditions for fresh frozen tissue (e.g., -20°C, -80°C, liquid nitrogen) leads to protein degradation, hindering reproducible multicenter studies.
- Formalin-fixed paraffin-embedded (FFPE) tissue offers a standardized storage solution and is increasingly recognized as a valuable alternative for omics analyses.
Purpose of the Study:
- To investigate the impact of different preparation protocols on FFPE tissue.
- To determine the reproducibility of multicenter studies using FFPE tissues.
- To validate FFPE tissue as a reliable source for clinical proteomics.
Main Methods:
- Comparative analysis of protein degradation rates across different FFPE tissue preparation protocols.
- Assessment of the impact of FFPE processing on the quality and reproducibility of omics data.
- Statistical evaluation of variations introduced by different FFPE preparation procedures.
Main Results:
- No significant differences were observed between various FFPE tissue preparation procedures.
- FFPE tissue preparation protocols do not introduce significant variability, ensuring sample integrity.
- The findings support the use of FFPE tissues in large-scale, reproducible clinical proteomics studies.
Conclusions:
- FFPE tissues are a reliable and reproducible sample type for clinical proteomics.
- Standardized FFPE preparation enables multicenter studies, overcoming limitations of fresh frozen tissue storage.
- This study validates FFPE tissues for broader application in omics-based disease research.
Abstract:
Tissue is the most relevant biological material to gather insight in disease mechanisms by means of omics technologies. However, fresh frozen tissue, which is generally regarded as the best imaginable source for such studies, is often not available. In case it is available, the different ways of storage (e.g. -20°C, -80°C, liquid nitrogen, etc.) hamper the conduction of reproducible multicenter studies because of different protein degradation rates. Formalin-fixed paraffin-embedded (FFPE) tissue on the contrary is considered as a valuable alternative for fresh frozen tissue, because only a few standard operation procedures are applied worldwide for the preparation of these tissues and because they are all stored in the same way. However, a study on the impact of the different preparation protocols for FFPE tissue was still lacking. Therefore, Bronsert et al. in this issue [Bronsert, P., Weißer, J., Biniossek, M. L., Kuehs, M. et al., Proteomics Clin. Appl. 2014, 8 786-804] conducted such a study that provides proof that there is no significant effect between these sample preparations procedures, and thereby they further open the gate for FFPE tissues to enter the field of clinical proteomics.
