PUBLICATION
Mycobacterium marinum strains can be divided into two distinct types based on genetic diversity and virulence
- Authors
- van der Sar, A.M., Abdallah, A.M., Sparrius, M., Reinders, E., Vandenbroucke-Grauls, C.M., and Bitter, W.
- ID
- ZDB-PUB-061222-7
- Date
- 2004
- Source
- Infection and Immunity 72(11): 6306-6312 (Journal)
- Registered Authors
- Bitter, Wilbert
- Keywords
- none
- MeSH Terms
-
- Acute Disease
- Animals
- Carps
- Cell Line
- Chronic Disease
- Genetic Variation*
- Humans
- Male
- Mycobacterium Infections, Nontuberculous/microbiology*
- Mycobacterium Infections, Nontuberculous/mortality
- Mycobacterium Infections, Nontuberculous/physiopathology
- Mycobacterium marinum/classification*
- Mycobacterium marinum/genetics
- Mycobacterium marinum/pathogenicity*
- Polymorphism, Restriction Fragment Length
- Virulence
- Zebrafish
- PubMed
- 15501758 Full text @ Infect. Immun.
Citation
van der Sar, A.M., Abdallah, A.M., Sparrius, M., Reinders, E., Vandenbroucke-Grauls, C.M., and Bitter, W. (2004) Mycobacterium marinum strains can be divided into two distinct types based on genetic diversity and virulence. Infection and Immunity. 72(11):6306-6312.
Abstract
Mycobacterium marinum causes a systemic tuberculosis-like disease in a large number of poikilothermic animals and is used as a model for mycobacterial pathogenesis. In the present study, we infected zebra fish (Danio rerio) with different strains of M. marinum to determine the variation in pathogenicity. Depending on the M. marinum isolate, the fish developed an acute or chronic disease. Acute disease was characterized by uncontrolled growth of the pathogen and death of all animals within 16 days, whereas chronic disease was characterized by granuloma formation in different organs and survival of the animals for at least 4 to 8 weeks. Genetic analysis of the isolates by amplified fragment length polymorphism showed that M. marinum strains could be divided in two clusters. Cluster I contained predominantly strains isolated from humans with fish tank granuloma, whereas the majority of the cluster II strains were isolated from poikilothermic species. Acute disease progression was noted only with strains belonging to cluster I, whereas all chronic-disease-causing isolates belonged to cluster II. This difference in virulence was also observed in vitro: cluster I isolate Mma20 was able to infect and survive more efficiently in the human macrophage THP-1 and the carp leukocyte CLC cell lines than was the cluster II isolate Mma11. We conclude that strain characteristics play an important role in the pathogenicity of M. marinum. In addition, the correlation between genetic variation and host origin suggests that cluster I isolates are more pathogenic for humans.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping