Intestinal microbes affect phenotypes and functions of invariant natural killer T cells in mice.
Intestinal microbes affect phenotypes and functions of invariant natural killer T cells in mice.
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DOI:
10.1053/j.gastro.2012.04.017
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发表时间:
2012-08
期刊:
影响因子:
29.4
通讯作者:
Kronenberg M
中科院分区:
文献类型:
--
作者:
Wingender G;Stepniak D;Krebs P;Lin L;McBride S;Wei B;Braun J;Mazmanian SK;Kronenberg M
Invariant natural killer T (iNKT) cells undergo canonical, Vα14–Jα18 rearrangement of the T-cell receptor (TCR) in mice; this form of the TCR recognizes glycolipids presented by CD1d. iNKT cells mediate many different immune reactions. Their constitutive activated and memory phenotype and rapid initiation of effector functions after stimulation indicate previous antigen-specific stimulation. However, little is known about this process. We investigated whether symbiotic microbes can determine the activated phenotype and function of iNKT cells. We analyzed the numbers, phenotypes, and functions of iNKT cells in germ-free mice, germ-free mice reconstituted with specified bacteria, and mice housed in specific pathogen-free (SPF) environments. SPF mice, obtained from different vendors, have different intestinal microbiota. iNKT cells isolated from these mice differed in TCR Vβ7 frequency and cytokine response to antigen, which depended on the environment. iNKT cells isolated from germ-free mice had a less mature phenotype and were hypo-responsive to activation with the antigen α-galactosylceramide. Intra-gastric exposure of germ-free mice to Sphingomonas bacteria, which carry iNKT cell antigens, fully established phenotypic maturity of iNKT cells. In contrast, reconstitution with Escherichia coli, which lack specific antigens for iNKT cells, did not affect the phenotype of iNKT cells. The effects of intestinal microbes on iNKT cell responsiveness did not require toll-like receptor signals, which can activate iNKT cells independently of TCR stimulation. Intestinal microbes can affect iNKT cell phenotypes and functions in mice.
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DOI:
10.1126/science.1219328
发表时间:
2012-04-27
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Olszak T;An D;Zeissig S;Vera MP;Richter J;Franke A;Glickman JN;Siebert R;Baron RM;Kasper DL;Blumberg RS
通讯作者:
Blumberg RS
DOI:
10.1084/jem.192.5.741
发表时间:
2000-09-04
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Matsuda JL;Naidenko OV;Gapin L;Nakayama T;Taniguchi M;Wang CR;Koezuka Y;Kronenberg M
通讯作者:
Kronenberg M
影响因子:
15.9
作者:
Chang, Ya-Jen;Kim, Hye Young;Umetsu, Dale T.
通讯作者:
Umetsu, Dale T.
影响因子:
30.5
作者:
Kinjo, Yuki;Tupin, Emmanuel;Kronenberg, Mitchell
通讯作者:
Kronenberg, Mitchell
影响因子:
5.4
作者:
Chang, Jae-Hoon;Lee, Jung-Mi;Kang, Chang-Yuil
通讯作者:
Kang, Chang-Yuil