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Updated: Aug 17, 2026
Quantitative Mass Spectrometric Profiling of Cancer-cell Proteomes Derived From Liquid and Solid Tumors
Published on: February 27, 2015
Use of proteomics to study chemosensitivity
Julia Poland1, Silke Wandschneider, Andrea Urbani
1Institut für Laboratoriumsmedizin und Pathobiochemie, Universitätsklinikum Charite, Berlin, Germany.
Abstract:
Chemoresistance remains an unresolved problem in clinical oncology. Therefore it is important to identify molecular factors that lead to an understanding of the mechanisms of drug resistance in cancer cells. On the protein-expression level, this can be done using proteomics, which has become the focus of significant interest and research over the past decade. We describe an easy and practicable standardized technique that can be used to study global protein expression in chemosensitive and chemoresistant cancer cells to find candidate proteins that are potentially associated with the drug-resistant phenotype. As an example, fractionation of human neuroblastoma cells using two-dimensional polyacrylamide electrophoresis, spot detection, image analysis, and finally protein identification is illustrated.
Insights
This study presents a standardized proteomics technique to identify proteins linked to cancer drug resistance. Understanding these molecular factors is key to overcoming chemoresistance in clinical oncology.
Area of Science:
- Oncology
- Proteomics
- Molecular Biology
Background:
- Chemoresistance is a major challenge in cancer treatment.
- Identifying molecular mechanisms of drug resistance is crucial.
- Proteomics offers a powerful approach to study protein expression in drug-resistant cells.
Purpose of the Study:
- To describe a standardized proteomics technique for analyzing protein expression in chemosensitive and chemoresistant cancer cells.
- To identify candidate proteins associated with the drug-resistant phenotype.
- To provide a practical method for advancing cancer drug resistance research.
Main Methods:
- Standardized proteomics technique.
- Two-dimensional polyacrylamide gel electrophoresis for protein fractionation.
- Spot detection, image analysis, and protein identification.
Main Results:
- Demonstrated a practicable method for global protein expression analysis.
- Illustrated the application in human neuroblastoma cells.
- Facilitated the identification of potential proteins involved in chemoresistance.
Conclusions:
- The described technique is effective for studying protein expression differences between chemosensitive and chemoresistant cells.
- This approach aids in understanding the molecular basis of cancer drug resistance.
- The findings support the use of proteomics in identifying therapeutic targets for overcoming chemoresistance.
