Related Experiment Video
Updated: Jun 7, 2026
13:33
Infinium Assay for Large-scale SNP Genotyping Applications
Published on: November 19, 2013
Technologies in the Whole-Genome Age: MALDI-TOF-Based Genotyping
Nicolas Vogel1, Katrin Schiebel, Andreas Humeny
1Institut für Biochemie, Emil-Fischer-Zentrum, Friedrich-Alexander-Universität Erlangen-Nürnberg, Germany.
Summary
Matrix-assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF-MS) is a powerful tool for analyzing DNA variations, including single nucleotide polymorphisms and DNA methylation. Optimized primer extension methods enable multiplexing for economic, parallel genotyping of multiple alleles.
Area of Science:
- Molecular Biology
- Genetics
- Biotechnology
Background:
- Deciphering the human genome has spurred research into DNA variations affecting gene function and disease.
- Matrix-assisted laser desorption/ionization-time of flight mass spectrometry (MALDI-TOF-MS) is a key technology for investigating DNA variations.
- MALDI-TOF-MS is valuable for analyzing single nucleotide polymorphisms, DNA methylation, microsatellite instability, and loss of heterozygosity.
Purpose of the Study:
- To highlight the utility of MALDI-TOF-MS in DNA analysis.
- To discuss the evolution and application of MALDI-TOF-MS in nucleic acid research.
- To present optimized primer extension methods for efficient DNA variation genotyping.
Main Methods:
- Utilizing MALDI-TOF-MS for qualitative and quantitative analysis of DNA variations.
- Employing primer extension assays for genotyping single alleles, microsatellite lengths, and methylation status.
- Developing optimized primer design and nucleotide selection for enhanced primer extension.
Main Results:
- MALDI-TOF-MS has achieved widespread acceptance in nucleic acid research.
- Primer extension methods allow for multiplexing, enabling parallel genotyping of multiple alleles.
- Optimized methods increase economic efficiency through simultaneous analysis of several alleles.
Conclusions:
- MALDI-TOF-MS provides a universal platform for diverse molecular analyses.
- Primer extension-based MALDI-TOF-MS is a versatile approach for DNA variation genotyping.
- This technique offers economic and efficient solutions for genetic analysis in research laboratories.
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...
01:29Modern Molecular Taxonomy
Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...
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...
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...
02:02Genomics
Genomics is the science of genomes: it is the study of all the genetic material of an organism. In humans, the genome consists of information carried in 23 pairs of chromosomes in the nucleus, as well as mitochondrial DNA. In genomics, both coding and non-coding DNA is sequenced and analyzed. Genomics allows a better understanding of all living things, their evolution, and their diversity. It has a myriad of uses: for example, to build phylogenetic trees, to improve productivity and...