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Preparation of the Mgm101 Recombination Protein by MBP-based Tagging Strategy
Published on: June 25, 2013
Microbial antigenic variation mediated by homologous DNA recombination
Cornelis Vink1, Gloria Rudenko, H Steven Seifert
1Department of Pediatrics, Erasmus MC, Rotterdam, The Netherlands.
FEMS Microbiology Reviews
|January 4, 2012
Summary
Pathogens evade immune detection through antigenic variation, altering surface molecules. This review focuses on DNA recombination mechanisms used by bacteria, fungi, and parasites for immune evasion.
Area of Science:
- Microbiology
- Immunology
- Genetics
Background:
- Pathogenic microorganisms utilize immune evasion strategies to survive within hosts.
- Antigenic variation, a key immune evasion tactic, involves continuous modification of microbial surface molecules.
- This forces the host immune system to constantly adapt, allowing pathogen persistence.
Purpose of the Study:
- To review antigenic variation systems reliant on homologous DNA recombination.
- To explore these systems across diverse pathogens including bacteria, fungi, and parasites.
- To detail the mechanisms, DNA substrates, and enzymatic machinery involved in recombination-based antigenic variation.
Main Methods:
- Literature review of antigenic variation systems.
- Focus on homologous DNA recombination mechanisms.
- Analysis of DNA substrates and enzymatic machinery.
Main Results:
- Antigenic variation is a widespread strategy employed by various pathogens.
- Homologous DNA recombination is a common mechanism underlying antigenic variation.
- Diverse pathogens, including bacteria (Neisseria spp., Borrelia spp.), fungi (Pneumocystis carinii), and parasites (Trypanosoma brucei), utilize these systems.
Conclusions:
- DNA recombination-based antigenic variation is crucial for pathogen survival and persistence.
- Understanding these mechanisms provides insights into host-pathogen interactions.
- Further research into recombination machinery can inform therapeutic strategies against infectious diseases.
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