Abstract
<jats:title>ABSTRACT</jats:title>
<jats:p>
<jats:named-content content-type="genus-species">Campylobacter jejuni</jats:named-content>
is a commensal bacterium in the intestines of animals and birds and a major cause of food-borne gastroenteritis in humans worldwide. Here we show that exposure to pancreatic amylase leads to secretion of an α-dextran by
<jats:named-content content-type="genus-species">C. jejuni</jats:named-content>
and that a secreted protease, Cj0511, is required. Exposure of
<jats:named-content content-type="genus-species">C. jejuni</jats:named-content>
to pancreatic amylase promotes biofilm formation
<jats:italic>in vitro</jats:italic>
, increases interaction with human epithelial cell lines, increases virulence in the
<jats:named-content content-type="genus-species">Galleria mellonella</jats:named-content>
infection model, and promotes colonization of the chicken ileum. We also show that exposure to pancreatic amylase protects
<jats:named-content content-type="genus-species">C. jejuni</jats:named-content>
from stress conditions
<jats:italic>in vitro</jats:italic>
, suggesting that the induced α-dextran may be important during transmission between hosts. This is the first evidence that pancreatic amylase functions as an interkingdom signal in an enteric microorganism.
</jats:p>
Original language | English |
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Pages (from-to) | 4884-4895 |
Number of pages | 0 |
Journal | Infection and Immunity |
Volume | 83 |
Issue number | 12 |
DOIs | |
Publication status | Published - Dec 2015 |