Survival mechanisms of Campylobacter jejuniin co-culture with Acanthoamoebaspp.

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Campylobacter jejuniis a leading cause of food poisoning all over the world. Contaminated chicken meats are major source of infection in human. Therefore, reduction of C. jejuni-burden in chickens is an important factor for reduction of risk of infection. However, infection route of C. jejuniamong chickens has not been fully understood. Recently, it is suggested that amoeba could be reservoir of C. jejuni. In this study, we tried to identify the genes involving in growth inside of amoeba by using transposon mutagenesis. As results, it was suggested that internalization of C. jejuniinto amoeba depended on flagellar motility but was not necessary for proliferation of bacteria in co-culture with ameba.