PMID- 16309591 OWN - NLM STAT- MEDLINE DCOM- 20070111 LR - 20131121 IS - 1165-158X (Electronic) IS - 0145-5680 (Linking) VI - 51 IP - 4 DP - 2005 Sep 30 TI - Carbon monoxide reduces the expression and activity of matrix metalloproteinases 1 and 2 in alveolar epithelial cells. PG - 403-8 AB - Matrix metalloproteinases (MMPs), particularly MMP-1 and MMP-2, are involved in the pathophysiology of emphysema. MMPs contain zinc in the catalytic site and its expression is regulated transcriptionally via mitogen activated protein kinases (MAPKs). Carbon monoxide (CO), one of the end products of heme oxygenase activity, has anti-inflammatory properties, which are mediated, at least in part, by activation of p38 MAPK. Furthermore, CO has the unique ability to bind to metal centers in proteins and can affect their specific activity. Therefore, we hypothesized that CO could inhibit MMPs expression and/or activity. Here we show that a recently identified carbon monoxide-releasing molecule, [Ru(CO)3Cl2]2 (or CORM-2) inhibits MMP-1 and MMP-2 mRNA expression in the human lung epithelial cell line A549. The MMPs mRNA expression was unaffected by the p38 MAPK inhibitor SB203580, but in the case of MMP-1 was reversed by the antioxidant N-acetylcysteine. In addition, CORM-2 inhibited both MMP-1 and MMP-2 activities. Interestingly, no effect was observed with (Ru(DMSO)4Cl2), a negative control that does not contain CO groups. To the best of our knowledge this is the first evidence on the effect of CO on MMPs expression and activity. This effect could have important implications in the pathophysiology of emphysema and other diseases involving proteases/antiproteases imbalance. FAU - Desmard, M AU - Desmard M AD - Institut National de la Sante et la Recherche Medicale (INSERM) Unite 700, and Institut Federatif de Recherche 02, Faculte de Medecine Xavier Bichat, 75018 Paris, France. FAU - Amara, N AU - Amara N FAU - Lanone, S AU - Lanone S FAU - Motterlini, R AU - Motterlini R FAU - Boczkowski, J AU - Boczkowski J LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20050930 PL - France TA - Cell Mol Biol (Noisy-le-grand) JT - Cellular and molecular biology (Noisy-le-Grand, France) JID - 9216789 RN - 0 (Interleukin-1beta) RN - 0 (Organometallic Compounds) RN - 0 (RNA, Messenger) RN - 0 (tricarbonyldichlororuthenium (II) dimer) RN - 7U1EE4V452 (Carbon Monoxide) RN - EC 3.4.24.24 (Matrix Metalloproteinase 2) RN - EC 3.4.24.7 (Matrix Metalloproteinase 1) SB - IM MH - Carbon Monoxide/*pharmacology MH - Cell Line, Tumor MH - Epithelial Cells/*drug effects/*enzymology MH - Gene Expression Regulation, Enzymologic/*drug effects MH - Humans MH - Interleukin-1beta/pharmacology MH - Matrix Metalloproteinase 1/genetics/*metabolism MH - Matrix Metalloproteinase 2/genetics/*metabolism MH - Organometallic Compounds/pharmacology MH - Pulmonary Alveoli/*cytology MH - RNA, Messenger/genetics EDAT- 2005/11/29 09:00 MHDA- 2007/01/12 09:00 CRDT- 2005/11/29 09:00 PHST- 2005/04/14 00:00 [received] PHST- 2005/05/12 00:00 [accepted] PHST- 2005/11/29 09:00 [pubmed] PHST- 2007/01/12 09:00 [medline] PHST- 2005/11/29 09:00 [entrez] AID - 403 [pii] PST - epublish SO - Cell Mol Biol (Noisy-le-grand). 2005 Sep 30;51(4):403-8.