Enteric defensins are essential regulators of intestinal microbial ecology.
Enteric defensins are essential regulators of intestinal microbial ecology.
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Antimicrobial peptides are important effectors of innate immunity throughout the plant and animal kingdoms. In the mammalian small intestine, Paneth cell α-defensins are antimicrobial peptides that contribute to host defense against enteric pathogens. To determine if α-defensins also govern intestinal microbial ecology, we analyzed the intestinal microbiota in mice expressing a human α-defensin (DEFA5) and in mice lacking an enzyme required for processing of murine α-defensins. We detected significant α-defensin-dependent changes in microbiota composition, but not in total bacterial numbers, in these complementary models. Furthermore, DEFA5-expressing mice had striking losses of Segmented Filamentous Bacteria and fewer interleukin 17-producing lamina propria T cells. These data ascribe a new homeostatic role for α-defensins in regulating the makeup of the commensal microbiota.
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影响因子:
6.4
作者:
Heczko, U;Abe, A;Finlay, BB
通讯作者:
Finlay, BB
DOI:
10.1073/pnas.0504978102
发表时间:
2005-08-02
影响因子:
11.1
作者:
Ley, RE;Bäckhed, F;Gordon, JI
通讯作者:
Gordon, JI
影响因子:
30.3
作者:
Peterson, Daniel A.;McNulty, Nathan P.;Gordon, Jeffrey I.
通讯作者:
Gordon, Jeffrey I.
影响因子:
56.9
作者:
Gill, Steven R.;Pop, Mihai;Nelson, Karen E.
通讯作者:
Nelson, Karen E.
影响因子:
64.5
作者:
Garrett, Wendy S.;Lord, Graham M.;Glimcher, Laurie H.
通讯作者:
Glimcher, Laurie H.