PMID- 35158413 OWN - NLM STAT- MEDLINE DCOM- 20220422 LR - 20231219 IS - 1538-7836 (Electronic) IS - 1538-7933 (Print) IS - 1538-7836 (Linking) VI - 20 IP - 5 DP - 2022 May TI - Cross-linking by tissue transglutaminase-2 alters fibrinogen-directed macrophage proinflammatory activity. PG - 1182-1192 LID - 10.1111/jth.15670 [doi] AB - BACKGROUND: The blood coagulation factor fibrin(ogen) can modulate inflammation by altering leukocyte activity. Analyses of fibrin(ogen)-mediated proinflammatory activity have largely focused on leukocyte integrin binding activity revealed by conversion of fibrinogen to a stabilized fibrin polymer by blood coagulation enzymes. In addition to coagulation enzymes, fibrinogen is a substrate for tissue transglutaminase-2 (TG2), a widely expressed enzyme that produces unique fibrinogen Aalpha-gamma chain cross-linked products. OBJECTIVES: We tested the hypothesis that TG2 dependent cross-linking alters the proinflammatory activity of surface-adhered fibrinogen. METHODS: Mouse bone marrow-derived macrophages (BMDMs) were cultured on tissue culture plates coated with fibrinogen or TG2-cross-linked fibrinogen (10 microg/ml) and then stimulated with lipopolysaccharide (LPS, 1 ng/ml) or vehicle for various times. RESULTS: In the absence of LPS stimulation, TG2-cross-linked fibrin(ogen) enhanced inflammatory gene induction (e.g., Tnfalpha) compared with unmodified fibrinogen. LPS stimulation induced mitogen-activated protein kinase phosphorylation, IkappaBalpha degradation, and expression of proinflammatory cytokines (e.g., tumor necrosis factor alpha) within 60 min. This initial cellular activation was unaffected by unmodified or TG2-cross-linked fibrinogen. In contrast, LPS induction of interleukin-10 mRNA and protein and STAT3 phosphorylation was selectively attenuated by TG2-cross-linked fibrinogen, which was associated with enhanced proinflammatory cytokine secretion by LPS-stimulated BMDMs at later time points (6 and 24 h). CONCLUSIONS: The results indicate that atypical cross-linking by TG2 imparts unique proinflammatory activity to surface-adhered fibrinogen. The results suggest a novel coagulation-independent mechanism controlling fibrinogen-directed macrophage activation. CI - (c) 2022 International Society on Thrombosis and Haemostasis. FAU - Poole, Lauren G AU - Poole LG AUID- ORCID: 0000-0002-5405-5774 AD - Department of Pathobiology & Diagnostic Investigation, Michigan State University, East Lansing, Michigan, USA. AD - Institute for Integrative Toxicology, Michigan State University, East Lansing, Michigan, USA. FAU - Kopec, Anna K AU - Kopec AK AD - Department of Pathobiology & Diagnostic Investigation, Michigan State University, East Lansing, Michigan, USA. AD - Institute for Integrative Toxicology, Michigan State University, East Lansing, Michigan, USA. FAU - Flick, Matthew J AU - Flick MJ AD - Department of Pathology and Laboratory Medicine, UNC Blood Research Center, Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, North Carolina, USA. FAU - Luyendyk, James P AU - Luyendyk JP AUID- ORCID: 0000-0003-3174-8583 AD - Department of Pathobiology & Diagnostic Investigation, Michigan State University, East Lansing, Michigan, USA. AD - Institute for Integrative Toxicology, Michigan State University, East Lansing, Michigan, USA. AD - Department of Pharmacology and Toxicology, Michigan State University, East Lansing, Michigan, USA. LA - eng GR - R01 DK120289/DK/NIDDK NIH HHS/United States GR - F32 DK121423/DK/NIDDK NIH HHS/United States GR - K99 DK129710/DK/NIDDK NIH HHS/United States GR - R01 ES017537/ES/NIEHS NIH HHS/United States GR - R01 DK112778/DK/NIDDK NIH HHS/United States PT - Journal Article DEP - 20220227 PL - England TA - J Thromb Haemost JT - Journal of thrombosis and haemostasis : JTH JID - 101170508 RN - 0 (Lipopolysaccharides) RN - 0 (TG2 protein, mouse) RN - 0 (Tumor Necrosis Factor-alpha) RN - 9001-31-4 (Fibrin) RN - 9001-32-5 (Fibrinogen) RN - EC 2.3.2.13 (Protein Glutamine gamma Glutamyltransferase 2) RN - EC 2.3.2.13 (Transglutaminases) SB - IM MH - Animals MH - Fibrin/metabolism MH - Fibrinogen/metabolism MH - Humans MH - *Lipopolysaccharides MH - Macrophages/metabolism MH - Mice MH - *Protein Glutamine gamma Glutamyltransferase 2 MH - Transglutaminases/genetics/metabolism MH - Tumor Necrosis Factor-alpha PMC - PMC9035112 MID - NIHMS1781715 OTO - NOTNLM OT - fibrinogen OT - inflammation OT - lipopolysaccharide OT - macrophage OT - transglutaminase COIS- Conflicts of Interest: L.G. Poole, A. K. Kopec, M. J. Flick, and J.P. Luyendyk express no conflicts of interest regarding this work. EDAT- 2022/02/15 06:00 MHDA- 2022/04/23 06:00 PMCR- 2023/05/01 CRDT- 2022/02/14 20:18 PHST- 2022/01/21 00:00 [revised] PHST- 2021/09/27 00:00 [received] PHST- 2022/02/07 00:00 [accepted] PHST- 2022/02/15 06:00 [pubmed] PHST- 2022/04/23 06:00 [medline] PHST- 2022/02/14 20:18 [entrez] PHST- 2023/05/01 00:00 [pmc-release] AID - S1538-7836(22)00162-3 [pii] AID - 10.1111/jth.15670 [doi] PST - ppublish SO - J Thromb Haemost. 2022 May;20(5):1182-1192. doi: 10.1111/jth.15670. Epub 2022 Feb 27.