Journal
PHARMACOLOGY & THERAPEUTICS
Volume 123, Issue 3, Pages 344-352Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.pharmthera.2009.05.003
Keywords
Chromatin remodeling; Gene expression; Nitric oxide; S-nitrosylation; Tyr-nitration
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Funding
- FIRB [RBLA035A4X-1-FIRB]
- UE FP6 [UE-LHSB-CT-04-502988]
- AFM [MNM2-06, DdT2-06]
- MDA [88202]
- Ministero del Lavoro, della Salute e delle Politiche Sociali Ministero dell'Istruzione, dell'Universita e della Ricerca
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The discovery of nitric oxide (NO) revealed its ambiguous nature, which is related to its pleiotropic activities that control the homeostasis of every organism from bacteria to mammals in several physiological and pathological situations. The wide range of action of NO basically depends on two features: 1) the variety of chemical reactions depending on NO, and 2) the differential cellular responses elicited by distinct NO concentrations. Despite the increasing body of knowledge regarding its chemistry, biology and NO-dependent signaling pathways. little information is available on the nuclear actions of NO in terms of gene expression regulation. Indeed, studies of a putative role for this diatomic compound in regulating chromatin remodeling are still in their infancy. Only recently has the role of NO in epigenetics emerged, and some of its putative epigenetic properties are still only hypothetical. In the present review, we discuss the current evidence for NO-related mechanisms of epigenetic gene expression regulation. We link some of the well known NO chemical reactions and metabolic processes (e.g., S-nitrosylation of thiols, tyrosine nitration, cGMP production) to chromatin modification and address the most recent, striking hypothesis about NO and the control of chromosomes structure. (C) 2009 Elsevier Inc. All rights reserved.
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