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Abstract
The tissue factor (TF) pathway plays a central role in hemostasis and thrombo-inflammatory diseases. Although structure-function relationships of the TF initiation complex are elucidated, new facets of the dynamic regulation of TF's activities in cells continue to emerge. Cellular pathways that render TF non-coagulant participate in signaling of distinct TF complexes with associated proteases through the protease-activated receptor (PAR) family of G protein-coupled receptors. Additional co-receptors, including the endothelial protein C receptor (EPCR) and integrins, confer signaling specificity by directing subcellular localization and trafficking. We here review how TF is switched between its role in coagulation and cell signaling through thiol-disulfide exchange reactions in the context of physiologically relevant lipid microdomains. Inflammatory mediators, including reactive oxygen species, activators of the inflammasome, and the complement cascade play pivotal roles in TF procoagulant activation on monocytes, macrophages and endothelial cells. We furthermore discuss how TF, intracellular ligands, co-receptors and associated proteases are integrated in PAR-dependent cell signaling pathways controlling innate immunity, cancer and metabolic inflammation. Knowledge of the precise interactions of TF in coagulation and cell signaling is important for understanding effects of new anticoagulants beyond thrombosis and identification of new applications of these drugs for potential additional therapeutic benefits.
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Affiliation(s)
- H Zelaya
- Center for Thrombosis and Hemostasis, Johannes Gutenberg University Medical Center, Mainz, Germany
- National Scientific and Technical Research Council (CONICET) and National University of Tucumán, Tucumán, Argentina
| | - A S Rothmeier
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA, USA
| | - W Ruf
- Center for Thrombosis and Hemostasis, Johannes Gutenberg University Medical Center, Mainz, Germany
- Department of Immunology and Microbiology, The Scripps Research Institute, La Jolla, CA, USA
- German Center for Cardiovascular Research (DZHK), Partnersite Rhein-Main, Mainz, Germany
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Garcia-Castillo V, Zelaya H, Ilabaca A, Espinoza-Monje M, Komatsu R, Albarracín L, Kitazawa H, Garcia-Cancino A, Villena J. Lactobacillus fermentum UCO-979C beneficially modulates the innate immune response triggered by Helicobacter pylori infection in vitro. Benef Microbes 2018; 9:829-841. [PMID: 29798705 DOI: 10.3920/bm2018.0019] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Helicobacter pylori infection is associated with important gastric pathologies. An aggressive proinflammatory immune response is generated in the gastric tissue infected with H. pylori, resulting in gastritis and a series of morphological changes that increase the susceptibility to cancer development. Probiotics could present an alternative solution to prevent or decrease H. pylori infection. Among them, the use of immunomodulatory lactic acid bacteria represents a promising option to reduce the severity of chronic inflammatory-mediated tissue damage and to improve protective immunity against H. pylori. We previously isolated Lactobacillus fermentum UCO-979C from human gastric tissue and demonstrated its capacity to reduce adhesion of H. pylori to human gastric epithelial cells (AGS cells). In this work, the ability of L. fermentum UCO-979C to modulate immune response in AGS cells and PMA phorbol 12-myristate 13-acetate (PMA)-differentiated THP-1 (human monocytic leukaemia) macrophages in response to H. pylori infection was evaluated. We demonstrated that the UCO-979C strain is able to differentially modulate the cytokine response of gastric epithelial cells and macrophages after H. pylori infection. Of note, L. fermentum UCO-979C was able to significantly reduce the production of inflammatory cytokines and chemokines in AGS and THP-1 cells as well as increase the levels of immunoregulatory cytokines, indicating a remarkable anti-inflammatory effect. These findings strongly support the probiotic potential of L. fermentum UCO-979C and provide evidence of its beneficial effects against the inflammatory damage induced by H. pylori infection. Although our findings should be proven in appropriate experiments in vivo, in both H. pylori infection animal models and human trials, the results of the present work provide a scientific rationale for the use of L. fermentum UCO-979C to prevent or reduce H. pylori-induced gastric inflammation in humans.
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Affiliation(s)
- V Garcia-Castillo
- 1 Laboratory of Bacterial Pathogenicity, Faculty of Biological Sciences, University of Concepcion, Chacabuco s/n, Concepcion, Bio Bio 4030000, Chile.,2 Laboratory of Immunobiotechnology, Reference Centre for Lactobacilli (CERELA-CONICET), Tucuman 4000, Argentina.,3 Food and Feed Immunology Group, Graduate School of Agricultural Science, Tohoku University, Sendai 84-0051, Japan
| | - H Zelaya
- 2 Laboratory of Immunobiotechnology, Reference Centre for Lactobacilli (CERELA-CONICET), Tucuman 4000, Argentina
| | - A Ilabaca
- 1 Laboratory of Bacterial Pathogenicity, Faculty of Biological Sciences, University of Concepcion, Chacabuco s/n, Concepcion, Bio Bio 4030000, Chile
| | - M Espinoza-Monje
- 1 Laboratory of Bacterial Pathogenicity, Faculty of Biological Sciences, University of Concepcion, Chacabuco s/n, Concepcion, Bio Bio 4030000, Chile
| | - R Komatsu
- 2 Laboratory of Immunobiotechnology, Reference Centre for Lactobacilli (CERELA-CONICET), Tucuman 4000, Argentina
| | - L Albarracín
- 2 Laboratory of Immunobiotechnology, Reference Centre for Lactobacilli (CERELA-CONICET), Tucuman 4000, Argentina.,3 Food and Feed Immunology Group, Graduate School of Agricultural Science, Tohoku University, Sendai 84-0051, Japan.,5 Laboratory of Computing Science, Faculty of Exact Sciences and Technology, Tucuman University, Av. Independencia 1800, Tucuman 4000, Argentina
| | - H Kitazawa
- 3 Food and Feed Immunology Group, Graduate School of Agricultural Science, Tohoku University, Sendai 84-0051, Japan.,4 International Education and Research Center for Food and Agricultural Immunology (CFAI), Graduate School of Agricultural Science, Tohoku University, Sendai 984-0051, Japan
| | - A Garcia-Cancino
- 3 Food and Feed Immunology Group, Graduate School of Agricultural Science, Tohoku University, Sendai 84-0051, Japan
| | - J Villena
- 2 Laboratory of Immunobiotechnology, Reference Centre for Lactobacilli (CERELA-CONICET), Tucuman 4000, Argentina.,3 Food and Feed Immunology Group, Graduate School of Agricultural Science, Tohoku University, Sendai 84-0051, Japan
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