Accessing microenvironment compartments in formalin-fixed paraffin-embedded tissues by protein expression analysis.
Author
Summary, in English
Background: Formalin-fixed paraffin-embedded (FFPE) samples are an outstanding source of new information regarding disease evolvements. Current research on new biomarkers and diseases features has recently invested resources in FFPE-related projects. Results: In order to initiate clinical protein-expression studies using minute amount of biological material, a workflow based on the combination of filter-assisted sample preparation with MS analysis and label-free quantification was developed. Xenograft lung tumor tissue was investigated as a model system. The workflow was optimized and characterized in terms of its reproducibility from a quantitative and qualitative point of view. We proposed a modification of the original filter-assisted sample preparation protocol to improve reproducibility and highlight its potential for the investigation of hydrophobic proteins. Conclusions: Altogether the presented workflow allows analysis of FFPE samples with improvements in the analytical time and performance, and we show its application for lung cancer xenograft tissue samples.
Department/s
- Department of Biomedical Engineering
- Breastcancer-genetics
- BioCARE: Biomarkers in Cancer Medicine improving Health Care, Education and Innovation
Publishing year
2013
Language
English
Pages
2647-2659
Publication/Series
Bioanalysis
Volume
5
Issue
21
Links
Document type
Journal article
Publisher
Future Science
Topic
- Pharmacology and Toxicology
Status
Published
ISBN/ISSN/Other
- ISSN: 1757-6180