Title |
Glycolysis and pyrimidine biosynthesis are required for replication of adherent–invasive Escherichia coli in macrophages
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Published in |
Microbiology, April 2016
|
DOI | 10.1099/mic.0.000289 |
Pubmed ID | |
Authors |
Aoife P Thompson, Ian O'Neill, Emma J Smith, John Catchpole, Ailis Fagan, Karl E V Burgess, Ruaidhri J Carmody, David J Clarke |
Abstract |
Adherent-invasive Escherichia coli (AIEC) have been implicated in the etiology of Crohn's disease (CD), a chronic inflammatory bowel condition. It has been proposed that AIEC-infected macrophages produce high levels of pro-inflammatory cytokines thus contributing to the inflammation observed in CD. AIEC can replicate in macrophages and we wanted to determine if bacterial replication was linked to the high level of cytokine production associated with AIEC-infected macrophages. Therefore, we undertook a genetic analysis of the metabolic requirements for AIEC replication in the macrophage and we show that AIEC replication in this niche is dependent on bacterial glycolysis. In addition, our analyses indicate that AIEC have access to a wide range of nutrients in the macrophage although the level of pyrimidines does appear to be limiting. Finally, we show that the macrophage response to AIEC infection is indistinguishable from the response to the non-replicating glycolysis mutant (ΔpfkAB) and a non-pathogenic strain of E. coli, MG1655. Therefore, AIEC does not appear to subvert the macrophage response to E. coli during infection. |
X Demographics
Geographical breakdown
Country | Count | As % |
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United States | 2 | 33% |
United Kingdom | 1 | 17% |
Ireland | 1 | 17% |
Unknown | 2 | 33% |
Demographic breakdown
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Scientists | 4 | 67% |
Members of the public | 2 | 33% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
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United Kingdom | 1 | 4% |
United States | 1 | 4% |
Unknown | 26 | 93% |
Demographic breakdown
Readers by professional status | Count | As % |
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Student > Ph. D. Student | 8 | 29% |
Researcher | 3 | 11% |
Student > Bachelor | 3 | 11% |
Student > Master | 3 | 11% |
Lecturer | 2 | 7% |
Other | 1 | 4% |
Unknown | 8 | 29% |
Readers by discipline | Count | As % |
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Agricultural and Biological Sciences | 7 | 25% |
Biochemistry, Genetics and Molecular Biology | 6 | 21% |
Immunology and Microbiology | 4 | 14% |
Engineering | 1 | 4% |
Unknown | 10 | 36% |