Galleria mellonella as an infection model to investigate virulence of Vibrio parahaemolyticus.
Galleria mellonella as an infection model to investigate virulence of Vibrio parahaemolyticus.
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DOI:
10.1080/21505594.2017.1384895
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发表时间:
2018-01-01
期刊:
影响因子:
5.2
通讯作者:
Titball RW
中科院分区:
文献类型:
--
作者:
Wagley S;Borne R;Harrison J;Baker-Austin C;Ottaviani D;Leoni F;Vuddhakul V;Titball RW
Non-toxigenic V. parahaemolyticus isolates (tdh−/trh−/T3SS2−) have recently been isolated from patients with gastroenteritis. In this study we report that the larvae of the wax moth (Galleria mellonella) are susceptible to infection by toxigenic or non-toxigenic clinical isolates of V. parahaemolyticus. In comparison larvae inoculated with environmental isolates of V. parahaemolyticus did not succumb to disease. Whole genome sequencing of clinical non-toxigenic isolates revealed the presence of a gene encoding a nudix hydrolase, identified as mutT. A V. parahaemolyticus mutT mutant was unable to kill G. mellonella at 24 h post inoculation, indicating a role of this gene in virulence. Our findings show that G. mellonella is a valuable model for investigating screening of possible virulence genes of V. parahaemolyticus and can provide new insights into mechanisms of virulence of atypical non-toxigenic V. parahaemolyticus. These findings will allow improved genetic tests for the identification of pathogenic V. parahaemolyticus to be developed and will have a significant impact for the scientific community.
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