Pancreatic Amylase is an Environmental Signal for Regulation of Biofilm Formation and Host Interaction in Campylobacter jejuni.


Jowiya, W; Brunner, K; Abouelhadid, S; Hussain, HA; Nair, SP; Sadiq, S; Williams, LK; Trantham, EK; Stephenson, H; Wren, BW; Bajaj-Elliott, M; Cogan, TA; Laws, AP; Wade, J; Dorrell, N; Allan, E; (2015) Pancreatic Amylase is an Environmental Signal for Regulation of Biofilm Formation and Host Interaction in Campylobacter jejuni. Infection and immunity, 83 (12). pp. 4884-95. ISSN 0019-9567 DOI: https://doi.org/10.1128/IAI.01064-15

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Abstract

: Campylobacter jejuni 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 C. jejuni and that a secreted protease, Cj0511, is required. Exposure of C. jejuni to pancreatic amylase promotes biofilm formation in vitro, increases interaction with human epithelial cell lines, increases virulence in the Galleria mellonella infection model, and promotes colonization of the chicken ileum. We also show that exposure to pancreatic amylase protects C. jejuni from stress conditions in vitro, 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.<br/>

Item Type: Article
Faculty and Department: Faculty of Infectious and Tropical Diseases > Dept of Pathogen Molecular Biology
PubMed ID: 26438798
Web of Science ID: 364944400041
URI: http://researchonline.lshtm.ac.uk/id/eprint/2324751

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