PMID- 12093796 OWN - NLM STAT- MEDLINE DCOM- 20021029 LR - 20210206 IS - 0021-9258 (Print) IS - 0021-9258 (Linking) VI - 277 IP - 36 DP - 2002 Sep 6 TI - The serine protease plasmin triggers expression of MCP-1 and CD40 in human primary monocytes via activation of p38 MAPK and janus kinase (JAK)/STAT signaling pathways. PG - 33509-17 AB - The mechanism of proinflammatory activation of human monocytes by plasmin is unknown. Here we demonstrate that in human primary monocytes, plasmin stimulates mitogen-activated protein kinase (MAPK) signaling via phosphorylation of MAPK kinase 3/6 (MKK3/6) and p38 MAPK that triggers subsequent DNA binding of transcription factor activator protein-1 (AP-1). The AP-1 complex contained phosphorylated c-Jun and ATF2, and its DNA binding activity was blocked by the p38 MAPK inhibitor SB203580. In addition, plasmin elicits Janus kinase (JAK)/signal transducer and activator of transcription (STAT) signaling, as detected by phosphorylation of JAK1 tyrosine kinase and STAT1 and STAT3 proteins. Plasmin-induced DNA binding of STAT1 and STAT3 was blocked by SB203580 and AG490, inhibitors of p38 MAPK and JAK, respectively, but not by U0126, an inhibitor of MKK1/2. DNA binding of NF-kappaB remained unaffected by any of these inhibitors. The plasmin-induced signaling led to expression of monocyte chemoattractant protein-1 (MCP-1) and CD40, which required activation of both p38 MAPK and JAK/STAT signaling pathways. Additionally, signaling through both p38 MAPK and JAK is involved in the plasmin-mediated monocyte migration, whereas the formylmethionylleucylphenylalanine-induced chemotaxis remained unaffected. Taken together, our data demonstrate a novel function of the serine protease plasmin in a proinflammatory signaling network. FAU - Burysek, Ladislav AU - Burysek L AD - Department of Pharmacology of Natural Products and Clinical Pharmacology, University of Ulm, D-89081 Ulm, Germany. FAU - Syrovets, Tatiana AU - Syrovets T FAU - Simmet, Thomas AU - Simmet T LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20020701 PL - United States TA - J Biol Chem JT - The Journal of biological chemistry JID - 2985121R RN - 0 (CD40 Antigens) RN - 0 (Chemokine CCL2) RN - 0 (DNA-Binding Proteins) RN - 0 (NF-kappa B) RN - 0 (STAT1 Transcription Factor) RN - 0 (STAT1 protein, human) RN - 0 (STAT3 Transcription Factor) RN - 0 (STAT3 protein, human) RN - 0 (Trans-Activators) RN - 42HK56048U (Tyrosine) RN - 452VLY9402 (Serine) RN - 9007-49-2 (DNA) RN - EC 2.7.- (Protein Kinases) RN - EC 2.7.10.1 (Protein-Tyrosine Kinases) RN - EC 2.7.10.2 (JAK1 protein, human) RN - EC 2.7.10.2 (Janus Kinase 1) RN - EC 2.7.11.24 (Mitogen-Activated Protein Kinases) RN - EC 2.7.11.24 (p38 Mitogen-Activated Protein Kinases) RN - EC 3.4.21.- (Serine Endopeptidases) RN - EC 3.4.21.7 (Fibrinolysin) SB - IM MH - Blotting, Western MH - CD40 Antigens/*biosynthesis/genetics MH - Cell Movement MH - Cells, Cultured MH - Chemokine CCL2/*biosynthesis/genetics MH - DNA/metabolism MH - DNA-Binding Proteins/metabolism MH - Dose-Response Relationship, Drug MH - Enzyme Activation MH - Fibrinolysin/*pharmacology MH - Humans MH - Janus Kinase 1 MH - Mitogen-Activated Protein Kinases/metabolism MH - Monocytes/enzymology/*metabolism MH - NF-kappa B/metabolism MH - Phosphorylation MH - Precipitin Tests MH - Protein Binding MH - Protein Kinases/*metabolism MH - Protein-Tyrosine Kinases/metabolism MH - STAT1 Transcription Factor MH - STAT3 Transcription Factor MH - Serine/metabolism MH - Serine Endopeptidases/metabolism MH - Signal Transduction MH - Time Factors MH - Trans-Activators/*metabolism MH - Transcriptional Activation MH - Tyrosine/metabolism MH - p38 Mitogen-Activated Protein Kinases EDAT- 2002/07/03 10:00 MHDA- 2002/10/31 04:00 CRDT- 2002/07/03 10:00 PHST- 2002/07/03 10:00 [pubmed] PHST- 2002/10/31 04:00 [medline] PHST- 2002/07/03 10:00 [entrez] AID - S0021-9258(20)74512-6 [pii] AID - 10.1074/jbc.M201941200 [doi] PST - ppublish SO - J Biol Chem. 2002 Sep 6;277(36):33509-17. doi: 10.1074/jbc.M201941200. Epub 2002 Jul 1.