PMID- 22029600 OWN - NLM STAT- MEDLINE DCOM- 20120307 LR - 20111124 IS - 1574-695X (Electronic) IS - 0928-8244 (Linking) VI - 63 IP - 3 DP - 2011 Dec TI - Mouse model for hemolytic uremic syndrome induced by outer membrane vesicles of Escherichia coli O157:H7. PG - 427-34 LID - 10.1111/j.1574-695X.2011.00869.x [doi] AB - 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 72-96 h after dually divided injections of 1 mug 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. CI - (c) 2011 Federation of European Microbiological Societies. Published by Blackwell Publishing Ltd. All rights reserved. FAU - Kim, Sang-Hyun AU - Kim SH AD - The National Primate Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Ochang, Cheongwon, Chungbuk, Korea. FAU - Lee, Yong-Hoon AU - Lee YH FAU - Lee, Sang-Ho AU - Lee SH FAU - Lee, Sang-Rae AU - Lee SR FAU - Huh, Jae-Won AU - Huh JW FAU - Kim, Sun-Uk AU - Kim SU FAU - Chang, Kyu-Tae AU - Chang KT LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20111004 PL - England TA - FEMS Immunol Med Microbiol JT - FEMS immunology and medical microbiology JID - 9315554 RN - 0 (Lipopolysaccharides) RN - 0 (Shiga Toxin 2) SB - IM MH - Animals MH - Disease Models, Animal MH - Escherichia coli O157/*pathogenicity MH - Exosomes/*metabolism MH - Hemolytic-Uremic Syndrome/*chemically induced/*pathology MH - Lipopolysaccharides/administration & dosage/*toxicity MH - Male MH - Mice MH - Mice, Inbred C57BL MH - Shiga Toxin 2/administration & dosage/*toxicity EDAT- 2011/10/28 06:00 MHDA- 2012/03/08 06:00 CRDT- 2011/10/28 06:00 PHST- 2011/05/05 00:00 [received] PHST- 2011/08/08 00:00 [revised] PHST- 2011/09/02 00:00 [accepted] PHST- 2011/10/28 06:00 [entrez] PHST- 2011/10/28 06:00 [pubmed] PHST- 2012/03/08 06:00 [medline] AID - 10.1111/j.1574-695X.2011.00869.x [doi] PST - ppublish SO - FEMS Immunol Med Microbiol. 2011 Dec;63(3):427-34. doi: 10.1111/j.1574-695X.2011.00869.x. Epub 2011 Oct 4.