Mouse model for hemolytic uremic syndrome induced by outer membrane vesicles of Escherichia coli O157:H7

被引:11
作者
Kim, Sang-Hyun [1 ]
Lee, Yong-Hoon [1 ]
Lee, Sang-Ho [1 ]
Lee, Sang-Rae [1 ]
Huh, Jae-Won [1 ]
Kim, Sun-Uk [1 ]
Chang, Kyu-Tae [1 ]
机构
[1] KRIBB, Natl Primate Res Ctr, Cheongwon 363883, Chungbuk, South Korea
来源
FEMS IMMUNOLOGY AND MEDICAL MICROBIOLOGY | 2011年 / 63卷 / 03期
关键词
hemolytic uremic syndrome; lipopolysaccharide; outer membrane vesicles; Shiga toxin; INTESTINAL EPITHELIAL-CELLS; SHIGA-TOXIN; LIPOPOLYSACCHARIDE; O157-H7; TRANSLOCATION; INFECTION; STRAINS; MUTANT;
D O I
10.1111/j.1574-695X.2011.00869.x
中图分类号
R392 [医学免疫学]; Q939.91 [免疫学];
学科分类号
100102 ;
摘要
Hemolytic uremic syndrome (HUS) is characterized by acute renal failure in children and is typically complicated with thrombocytopenia and hemolytic anemia. Although mouse models of HUS have been evaluated using Shiga toxin (STx) combined with or without lipopolysaccharide (LPS), no HUS model has been tested using purified outer membrane vesicles (OMVs) from STx-producing Escherichia coli (STEC) O157:H7. Accordingly, we investigated whether OMVs of STEC O157:H7 conveying STx2 and LPS can cause HUS-like symptoms in mice inoculated intraperitoneally. Three types of OMVs differing in LPS acylation status and STx2 amount were used to compare their ability to induce HUS-like symptoms. Native OMVs (nOMV) with fully hexa-acylated LPS caused HUS-like symptoms at 7296 similar to h after dually divided injections of 1 similar to mu g nOMV per animal. However, elevated doses of modified OMVs (mOMV) carrying mainly penta-acylated LPS were required to induce similar HUS signs. Moreover, mitomycin-C-induced OMVs (mcOMV) that were enriched with STx2 induced HUS-like symptoms similar to those of nOMV at the same dose. These results suggest that the OMVs of STEC O157:H7 potentiated with STx2 and fully hexa-acylated LPS can be utilized for inducing HUS-like symptoms in mice and could be the causative material involved in the development of HUS.
引用
收藏
页码:427 / 434
页数:8
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