Convergence of nitric oxide and lipid signaling: Anti-inflammatory nitro-fatty acids
| Autor: | Paul R. S. Baker, Francisco J. Schopfer, Valerie B. O'Donnell, Bruce A. Freeman |
|---|---|
| Rok vydání: | 2009 |
| Předmět: |
Cell signaling
Peroxisome proliferator-activated receptor Nitric Oxide medicine.disease_cause Biochemistry Article Nitric oxide chemistry.chemical_compound Physiology (medical) medicine Animals Humans Inflammation chemistry.chemical_classification Chemistry Fatty Acids Lipid signaling Peroxisome Nitro Compounds Rats PPAR gamma Vasodilation Oxidative Stress Gene Expression Regulation Eicosanoid Cytokines Signal transduction Protein Processing Post-Translational Heme Oxygenase-1 Oxidative stress Signal Transduction |
| Zdroj: | Free Radical Biology and Medicine. 46:989-1003 |
| ISSN: | 0891-5849 |
| DOI: | 10.1016/j.freeradbiomed.2008.11.021 |
| Popis: | The signaling mediators nitric oxide ( NO) and oxidized lipids, once viewed to transduce metabolic and inflammatory information via discrete and independent pathways, are now appreciated as interdependent regulators of immune response and metabolic homeostasis. The interactions between these two classes of mediators result in reciprocal control of mediator synthesis that is strongly influenced by the local chemical environment. The relationship between the two pathways extends beyond coregulation of NO and eicosanoid formation to converge via the nitration of unsaturated fatty acids to yield nitro derivatives (NO(2)-FA). These pluripotent signaling molecules are generated in vivo as an adaptive response to oxidative inflammatory conditions and manifest predominantly anti-inflammatory signaling reactions. These actions of NO(2)-FA are diverse, with these species serving as a potential chemical reserve of NO, reacting with cellular nucleophiles to posttranslationally modify protein structure, function, and localization. In this regard these species act as potent endogenous ligands for peroxisome proliferator-activated receptor gamma. Functional consequences of these signaling mechanisms have been shown in multiple model systems, including the inhibition of platelet and neutrophil functions, induction of heme oxygenase-1, inhibition of LPS-induced cytokine release in monocytes, increased insulin sensitivity and glucose uptake in adipocytes, and relaxation of preconstricted rat aortic segments. These observations have propelled further in vitro and in vivo studies of mechanisms of NO(2)-FA signaling and metabolism, highlighting the therapeutic potential of this class of molecules as anti-inflammatory drug candidates. |
| Databáze: | OpenAIRE |
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