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Interleukin-18 induces EMMPRIN expression in primary cardiomyocytes via JNK/Sp1 signaling and MMP-9 in part via EMMPRIN and through AP-1 and NF-[kappa]B activation
- Source :
- The American Journal of Physiology. Oct, 2010, Vol. 299 Issue 4, pH1242, 13 p.
- Publication Year :
- 2010
-
Abstract
- IL-18 and the extracellular matrix metalloproteinase (MMP) inducer (EMMPRIN) stimulate the expression of proinflammatory cytokines and MMPs and are elevated in myocardial hypertrophy, remodeling, and failure. Here, we report several novel findings in primary cardiomyocytes treated with IL-18. First, IL-18 activated multiple transcription factors, including NF-[kappa]B (p50 and p65), activator protein (AP)-1 (cFos, cJun, and JunD), GATA, CCAAT/enhancer-binding protein, myocyte-specific enhancer-binding factor, interferon regulatory factor-1, p53, and specific protein (Sp)-1. Second, IL-18 induced EMMPRIN expression via myeloid differentiation primary response gene 88/IL-1 receptor-associated kinase/TNF receptor-associated factor-6/JNK-dependent Sp1 activation. Third, IL-18 induced a number of MMP genes, particularly MMP-9, at a rapid rate as well as tissue inhibitor of metalloproteinase (TIMP)-1 and TIMP-3 at a slower rate. Finally, the IL-18 induction of MMP-9 was mediated in part via EMMPRIN and through JNK- and ERK-dependent AP-1 activation and p38 MAPK-dependent NF-[kappa]B activation. These results suggest that the elevated expression of IL-18 during myocardial injury and inflammation may favor EMMPRIN and MMP induction and extracellular matrix degradation. Therefore, targeting IL-18 or its signaling pathways may be of potential therapeutic benefit in adverse remodeling. myocardial remodeling; extracellular matrix; extracellular matrix metalloproteinase inducer; matrix metalloproteinase; tissue inhibitor of metalloproteinase; c-Jun N[H.sub.2] terminal kinase; specific protein-1; activator protein-1; nuclear factor-[kappa]B doi: 10.1152/ajpheart.00451.2010.
- Subjects :
- Heart cells -- Physiological aspects
Heart cells -- Genetic aspects
Heart cells -- Research
Interleukins -- Physiological aspects
Interleukins -- Research
Cellular signal transduction -- Physiological aspects
Cellular signal transduction -- Genetic aspects
Cellular signal transduction -- Research
Transcription factors -- Physiological aspects
Transcription factors -- Research
Biological sciences
Subjects
Details
- Language :
- English
- ISSN :
- 00029513
- Volume :
- 299
- Issue :
- 4
- Database :
- Gale General OneFile
- Journal :
- The American Journal of Physiology
- Publication Type :
- Academic Journal
- Accession number :
- edsgcl.240912693