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Science 7 June 2002:
Vol. 296. no. 5574, pp. 1880 - 1882
DOI: 10.1126/science.1071699

Reports

Activation of Endothelial Cell Protease Activated Receptor 1 by the Protein C Pathway

Matthias Riewald,1 Ramona J. Petrovan,1 Aaron Donner,1 Barbara M. Mueller,2 Wolfram Ruf1*

The coagulant and inflammatory exacerbation in sepsis is counterbalanced by the protective protein C (PC) pathway. Activated PC (APC) was shown to use the endothelial cell PC receptor (EPCR) as a coreceptor for cleavage of protease activated receptor 1 (PAR1) on endothelial cells. Gene profiling demonstrated that PAR1 signaling could account for all APC-induced protective genes, including the immunomodulatory monocyte chemoattractant protein-1 (MCP-1), which was selectively induced by activation of PAR1, but not PAR2. Thus, the prototypical thrombin receptor is the target for EPCR-dependent APC signaling, suggesting a role for this receptor cascade in protection from sepsis.

1 Department of Immunology, C204, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, CA 92037, USA.
2 Division of Cancer Biology, La Jolla Institute for Molecular Medicine, 4570 Executive Drive, San Diego, CA 92121, USA.
*   To whom correspondence should be addressed. E-mail: ruf{at}scripps.edu


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   Abstract »    Full Text »    PDF »
PAR1 Cleavage and Signaling in Response to Activated Protein C and Thrombin.
M. J. Ludeman, H. Kataoka, Y. Srinivasan, N. L. Esmon, C. T. Esmon, and S. R. Coughlin (2005)
J. Biol. Chem. 280, 13122-13128
   Abstract »    Full Text »    PDF »
A cardioprotective role for the endothelial protein C receptor in lipopolysaccharide-induced endotoxemia in the mouse.
T. Iwaki, D. T. Cruz, J. A. Martin, and F. J. Castellino (2005)
Blood 105, 2364-2371
   Abstract »    Full Text »    PDF »
Activated protein C induces the release of microparticle-associated endothelial protein C receptor.
M. Perez-Casal, C. Downey, K. Fukudome, G. Marx, and C. H. Toh (2005)
Blood 105, 1515-1522
   Abstract »    Full Text »    PDF »
Proteinase-Activated Receptors: Transducers of Proteinase-Mediated Signaling in Inflammation and Immune Response.
M. Steinhoff, J. Buddenkotte, V. Shpacovitch, A. Rattenholl, C. Moormann, N. Vergnolle, T. A. Luger, and M. D. Hollenberg (2005)
Endocr. Rev. 26, 1-43
   Abstract »    Full Text »    PDF »
Fibrin(ogen)-{alpha}M{beta}2 Interactions Regulate Leukocyte Function and Innate Immunity In Vivo.
M. J. Flick, X. Du, and J. L. Degen (2004)
Exp Biol Med 229, 1105-1110
   Abstract »    Full Text »    PDF »
Gene Expression Profiling of Inflamed Human Endothelial Cells and Influence of Activated Protein C.
N. Franscini, E. B. Bachli, N. Blau, M.-S. Leikauf, A. Schaffner, and G. Schoedon (2004)
Circulation 110, 2903-2909
   Abstract »    Full Text »    PDF »
A role for thrombin in liver fibrosis.
J G. Duplantier, L Dubuisson, N Senant, G Freyburger, I Laurendeau, J-M Herbert, A Desmouliere, and J Rosenbaum (2004)
Gut 53, 1682-1687
   Abstract »    Full Text »    PDF »
A Protein C Deficiency Exacerbates Inflammatory and Hypotensive Responses in Mice During Polymicrobial Sepsis in a Cecal Ligation and Puncture Model.
J. G. Ganopolsky and F. J. Castellino (2004)
Am. J. Pathol. 165, 1433-1446
   Abstract »    Full Text »    PDF »
APC stripped bare.
R. J. S. Preston and D. A. Lane (2004)
Blood 104, 1595-1596
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Activated protein C variants with normal cytoprotective but reduced anticoagulant activity.
L. O. Mosnier, A. J. Gale, S. Yegneswaran, and J. H. Griffin (2004)
Blood 104, 1740-1744
   Abstract »    Full Text »    PDF »
Autoantibodies against EPCR are found in antiphospholipid syndrome and are a risk factor for fetal death.
V. Hurtado, R. Montes, J.-C. Gris, M. L. Bertolaccini, A. Alonso, M. A. Martinez-Gonzalez, M. A. Khamashta, K. Fukudome, D. A. Lane, and J. Hermida (2004)
Blood 104, 1369-1374
   Abstract »    Full Text »    PDF »
Thrombomodulin-Protein C-EPCR System: Integrated to Regulate Coagulation and Inflammation.
M. V. de Wouwer, D. Collen, and E. M. Conway (2004)
Arterioscler Thromb Vasc Biol 24, 1374-1383
   Abstract »    Full Text »    PDF »
Activated Protein C Induces Endothelial Cell Proliferation by Mitogen-Activated Protein Kinase Activation In Vitro and Angiogenesis In Vivo.
M. Uchiba, K. Okajima, Y. Oike, Y. Ito, K. Fukudome, H. Isobe, and T. Suda (2004)
Circ. Res. 95, 34-41
   Abstract »    Full Text »    PDF »
Protease-Activated Receptors (PAR1 and PAR2) Contribute to Tumor Cell Motility and Metastasis.
X. Shi, B. Gangadharan, L. F. Brass, W. Ruf, and B. M. Mueller (2004)
Mol. Cancer Res. 2, 395-402
   Abstract »    Full Text »    PDF »
Bidirectional Relation Between Inflammation and Coagulation.
M. Levi, T. van der Poll, and H. R. Buller (2004)
Circulation 109, 2698-2704
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Protease-activated Receptor 2-dependent Phosphorylation of the Tissue Factor Cytoplasmic Domain.
J. Ahamed and W. Ruf (2004)
J. Biol. Chem. 279, 23038-23044
   Abstract »    Full Text »    PDF »



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