Advanced mass spectrometry technologies for the study of microbial pathogenesis
Jessica L Moore1, Richard M Caprioli1, Eric P Skaar2
1Mass Spectrometry Research Center, Vanderbilt University, Nashville, TN, United States.
Current Opinion in Microbiology
|July 6, 2014
Summary
Matrix-assisted laser desorption/ionization mass spectrometry (MALDI MS) rapidly identifies bacteria using molecular profiles. This technique aids in studying pathogen-host interactions and discovering infection markers in clinical samples.
Area of Science:
- Microbial pathogenesis
- Analytical chemistry
- Molecular imaging
Background:
- Matrix-assisted laser desorption/ionization mass spectrometry (MALDI MS) is a powerful tool for molecular analysis.
- Its application in diagnostic microbiology allows for rapid bacterial identification.
- MALDI MS offers potential for studying host-pathogen interactions and identifying infection biomarkers.
Purpose of the Study:
- To summarize the application of MALDI MS in studying microbial pathogenesis.
- To highlight MALDI MS as a diagnostic tool for bacterial identification.
- To explore its utility in analyzing host-pathogen interactions and discovering infection markers.
Main Methods:
- Utilizing MALDI MS for direct molecular profiling of microbial samples.
- Applying MALDI MS to serum and tissue samples for pathogen-host interaction studies.
- Employing MALDI MS for in situ molecular imaging across tissue sections (2D and 3D).
Main Results:
- MALDI MS enables rapid identification of bacteria from small cell populations.
- Direct molecular profiling of clinical samples facilitates pathogen-host interaction studies.
- MALDI MS serves as an imaging modality for regiospecific molecular measurements in tissues.
Conclusions:
- MALDI MS is a valuable technique in microbial pathogenesis research.
- It provides rapid diagnostic capabilities and aids in biomarker discovery.
- MALDI MS enables advanced molecular imaging for in situ analysis of infections.
Related Concept Videos
01:19MALDI-TOF Mass Spectrometry
5.7K
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...
5.7K
01:21Tandem Mass Spectrometry
3.0K
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...
3.0K
01:29Modern Molecular Taxonomy
830
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...
830
01:24Automated Microbial Diagnostics
66
Automated diagnostic analyzers have transformed clinical microbiology by providing rapid and reliable methods for pathogen identification and antibiotic susceptibility testing. Among these systems, the Vitek 2 is widely used because it automates the traditionally labor-intensive processes of microbial identification (ID) and antibiotic susceptibility testing (AST), delivering standardized and timely results that are essential for effective patient care.Microbial Identification with ID CardsThe...
66
01:21Mass Spectrometry: Complex Analysis
2.1K
Mass spectrometry is an important technique for the identification of pure compounds. However, it has some limitations for the analysis of complex mixtures, often due to excessive fragmentation making the spectrum too complicated to decipher. Mass spectrometry can be combined with suitable separation methods in sequence, forming hyphenated methods, which are useful in the analysis of complex mixtures.
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
GC–MS is a powerful hyphenated method commonly used in forensics and environmental...
2.1K
01:28Methods of Classification and Identification
2.2K
Bacterial identification relies on a diverse array of techniques to classify and understand microorganisms, each tailored to uncover specific characteristics. Traditional morphological approaches, while still valuable, are limited for closely related or structurally simple organisms. Modern methods integrate biochemical, serological, genetic, and advanced molecular tools to achieve greater accuracy.Morphological and Biochemical TechniquesMorphological characteristics, such as cell shape and...
2.2K