Probiotic bacteria reduce salmonella typhimurium intestinal colonization by competing for iron.
Probiotic bacteria reduce salmonella typhimurium intestinal colonization by competing for iron.
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DOI:
10.1016/j.chom.2013.06.007
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发表时间:
2013-07-17
影响因子:
30.3
通讯作者:
Raffatellu M
中科院分区:
文献类型:
--
作者:
Deriu E;Liu JZ;Pezeshki M;Edwards RA;Ochoa RJ;Contreras H;Libby SJ;Fang FC;Raffatellu M
Host inflammation alters the availability of nutrients such as iron to limit microbial growth. However, Salmonella enterica serovar Typhimurium thrives in the inflamed gut by scavenging for iron with siderophores. By administering Escherichia coli strain Nissle 1917, which assimilates iron by similar mechanisms, we show that this non-pathogenic bacterium can outcompete and reduce S. Typhimurium colonization in mouse models of acute colitis and chronic persistent infection. This probiotic activity depends on E. coli Nissle iron acquisition as mutants deficient in iron uptake colonize the intestine but do not reduce S. Typhimurium colonization. Additionally, the ability of E. coli Nissle to overcome iron restriction by the host protein lipocalin-2, which counteracts some siderophores, is essential as S. Typhimurium is unaffected by E. coli Nissle in lipocalin-2-deficient mice. Thus, iron availability impacts S. Typhimurium growth and E. coli Nissle reduces S. Typhimurium intestinal colonization by competing for this limiting nutrient.
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影响因子:
5.4
作者:
Behnsen, Judith;Deriu, Elisa;Raffatellu, Manuela
通讯作者:
Raffatellu, Manuela
DOI:
10.1073/pnas.0737682100
发表时间:
2003-04-01
影响因子:
11.1
作者:
Hantke, K;Nicholson, G;Winkelmann, G
通讯作者:
Winkelmann, G
影响因子:
4.3
作者:
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通讯作者:
Danese, Silvio
影响因子:
3.7
作者:
Cukrowska, B;Lodínova-Zádníková, R;Tlaskalová-Hogenová, H
通讯作者:
Tlaskalová-Hogenová, H
影响因子:
3.6
作者:
Crouch, Marie-Laure V.;Castor, Margaret;Fang, Ferric C.
通讯作者:
Fang, Ferric C.