Related Experiment Video
Updated: Jun 17, 2026
13:00
Low Molecular Weight Protein Enrichment on Mesoporous Silica Thin Films for Biomarker Discovery
Published on: April 17, 2012
Challenges for biomarker discovery in body fluids using SELDI-TOF-MS
Muriel De Bock1, Dominique de Seny, Marie-Alice Meuwis
1Laboratory of Clinical Chemistry, GIGA Research, University of Liège, CHU, B36, 4000 Liège 1, Belgium.
Journal of Biomedicine & Biotechnology
|December 24, 2009
Summary
Protein profiling with Surface-Enhanced Laser Desorption/Ionization-Time of Flight Mass Spectrometry (SELDI-TOF-MS) shows promise for biomarker discovery. Strict control over sample handling, SELDI settings, and data analysis is crucial for robust results.
Area of Science:
- Biomarker Discovery
- Proteomics
- Mass Spectrometry
Background:
- Surface-Enhanced Laser Desorption/Ionization-Time of Flight Mass Spectrometry (SELDI-TOF-MS) is increasingly used for protein profiling.
- Biomarker discovery holds significant potential for early disease detection and diagnosis.
- Challenges exist in standardizing SELDI-TOF-MS for reliable biomarker identification.
Purpose of the Study:
- To present practical considerations for establishing a robust and sensitive biomarker discovery strategy using SELDI-TOF-MS.
- To review common biological fluids and their preanalytical challenges.
- To provide insights into biomarker identification and validation hurdles.
Main Methods:
- Review of established protocols for sample handling in SELDI-TOF-MS.
- Analysis of critical SELDI-TOF-MS instrument parameters.
- Discussion of data analysis pipelines for proteomic data.
- Overview of preanalytical factors for various biological fluids.
Main Results:
- Strict control over sample handling, SELDI settings, and data analysis is essential for reproducible protein profiling.
- Preanalytical variables in sample collection and storage significantly impact biomarker discovery outcomes.
- Standardization of methods is key to overcoming biomarker identification and validation challenges.
Conclusions:
- Implementing standardized protocols for sample preparation, instrument operation, and data analysis is vital for successful biomarker discovery using SELDI-TOF-MS.
- Addressing preanalytical challenges in biological fluid handling is critical for reliable proteomic studies.
- Further research into robust identification and validation strategies is needed.
Related Concept Videos
01:19MALDI-TOF Mass Spectrometry
Mass spectrometry is a powerful characterization technique that can identify and separate a wide variety of compounds ranging from chemical to biological entities, based on their mass-to-charge ratio (m/z). The instruments that allow this detection, known as mass spectrometers, have three components: an ion source, a mass analyzer, and a detector. These spectrometers differ based on the nature of their ion source and analyzers.Matrix-assisted laser desorption ionization (MALDI) is a commonly...
01:21Tandem Mass Spectrometry
Tandem mass spectrometry is a technique that uses multiple mass analyzers in series to obtain a higher selectivity and reduce chemical noise during analyte detection. Instruments with multiple analyzers separated by an interaction cell enable secondary fragmentation and selected study of the fragment ions.Secondary fragmentations occur in the interaction cell and can be induced by various factors. Fragmentation induced by collision with inert gases, such as N2, Ar, He, etc., is called...
01:33Peptide Identification Using Tandem Mass Spectrometry
Tandem mass spectrometry, also known as MS/MS or MS2, is an analytical technique that employs two mass analyzers. Essentially it is a series of mass spectrometers that helps isolate a particular biomolecule and then helps study its chemical properties.
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...
This technique helps gather information regarding the protein from which the peptide was obtained and to study the peptides’ amino acid sequence. Identifying peptides from a complex mixture is an important component of the growing field of...
01:25Rapid Identification of Pathogens
MALDI-TOF MS has transformed clinical microbiology by offering a rapid and reliable method for pathogen identification. The traditional approach to microbial identification typically involves time-consuming culture techniques and biochemical tests, which can delay the initiation of appropriate antimicrobial therapy. MALDI-TOF MS avoids these delays by using characteristic ribosomal protein mass patterns of microbial cells, enabling accurate species-level identification within minutes.Principle...