PMID- 25539820 OWN - NLM STAT- MEDLINE DCOM- 20150414 LR - 20181202 IS - 1550-6606 (Electronic) IS - 0022-1767 (Print) IS - 0022-1767 (Linking) VI - 194 IP - 3 DP - 2015 Feb 1 TI - TLR2 modulates antibodies required for intestinal ischemia/reperfusion-induced damage and inflammation. PG - 1190-8 LID - 10.4049/jimmunol.1303124 [doi] AB - In multiple clinical conditions, including trauma and hemorrhage, reperfusion magnifies ischemic tissue damage. Ischemia induces expression of multiple neoantigens, including lipid alterations that are recognized by the serum protein, beta2-glycoprotein I (beta2-GPI). During reperfusion, binding of beta2-GPI by naturally occurring Abs results in an excessive inflammatory response that may lead to death. As beta2-GPI is critical for intestinal ischemia/reperfusion (IR)-induced tissue damage and TLR2 is one of the proposed receptors for beta2-GPI, we hypothesized that IR-induced intestinal damage and inflammation require TLR2. Using TLR2(-/-) mice, we demonstrate that TLR2 is required for IR-induced mucosal damage, as well as complement activation and proinflammatory cytokine production. In response to IR, TLR2(-/-) mice have increased serum beta2-GPI compared with wild-type mice, but beta2-GPI is not deposited on ischemic intestinal tissue. In addition, TLR2(-/-) mice also did not express other novel Ags, suggesting a sequential response. Unlike other TLRs, TLR2(-/-) mice lacked the appropriate Ab repertoire to induce intestinal IR tissue damage or inflammation. Together, these data suggest that, in addition to the inflammatory response, IR-induced injury requires TLR2 for naturally occurring Ab production. CI - Copyright (c) 2015 by The American Association of Immunologists, Inc. FAU - Pope, Michael R AU - Pope MR AD - Division of Biology, Kansas State University, Manhattan, KS 66506. FAU - Fleming, Sherry D AU - Fleming SD AD - Division of Biology, Kansas State University, Manhattan, KS 66506 sdflemin@ksu.edu. LA - eng GR - R21 AI107005/AI/NIAID NIH HHS/United States GR - P20 RR016475/RR/NCRR NIH HHS/United States GR - R01 AI061691/AI/NIAID NIH HHS/United States GR - RR016475/RR/NCRR NIH HHS/United States GR - P20 GM103418/GM/NIGMS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20141224 PL - United States TA - J Immunol JT - Journal of immunology (Baltimore, Md. : 1950) JID - 2985117R RN - 0 (Antibodies) RN - 0 (Cytokines) RN - 0 (Eicosanoids) RN - 0 (Immunoglobulin M) RN - 0 (Toll-Like Receptor 2) RN - 0 (beta 2-Glycoprotein I) RN - 9007-36-7 (Complement System Proteins) SB - IM MH - Animals MH - Antibodies/blood/*immunology MH - Complement System Proteins/immunology MH - Cytokines/biosynthesis MH - Disease Models, Animal MH - Eicosanoids/biosynthesis MH - Immunoglobulin M/blood/immunology MH - Inflammation/genetics/*immunology/*metabolism/pathology MH - Intestinal Mucosa/immunology/*metabolism/pathology MH - Intestines/*immunology/pathology MH - Mice MH - Mice, Knockout MH - Reperfusion Injury/genetics/*immunology/*metabolism MH - Toll-Like Receptor 2/genetics/*metabolism MH - beta 2-Glycoprotein I/immunology/metabolism PMC - PMC4297697 MID - NIHMS645794 EDAT- 2014/12/30 06:00 MHDA- 2015/04/15 06:00 PMCR- 2016/02/01 CRDT- 2014/12/26 06:00 PHST- 2014/12/26 06:00 [entrez] PHST- 2014/12/30 06:00 [pubmed] PHST- 2015/04/15 06:00 [medline] PHST- 2016/02/01 00:00 [pmc-release] AID - jimmunol.1303124 [pii] AID - 10.4049/jimmunol.1303124 [doi] PST - ppublish SO - J Immunol. 2015 Feb 1;194(3):1190-8. doi: 10.4049/jimmunol.1303124. Epub 2014 Dec 24.