Abstract:
:Nitric Oxide (NO) is a signaling radical, highly diffusible pleiotropic regulator of a large set of different molecular and biological pathways, including, neurotransmission, vasodilatation and macrophagemediated responses against infections. It is produced from the amino acid L-Arginine and oxygen by the enzymatic action of three isoforms of the Nitric Oxide Synthase (NOS), differently expressed and regulated in tissues. Increasing evidence highlights the wide spectrum of action of NO in different pathologic conditions, including cancer. In this regard, a dual role for this molecule as a pro- and anti-tumorigenic mediator has been described, in a context and concentration-dependent manner. Moreover, NO exerts numerous immunologic effects, by operating as an effector molecule in innate immune responses as well as a regulator of adaptive immune components. Here, we will review recent advances in the field of biology of this pleiotropic signaling molecule in cancer, also providing a concise description of the immunoregulatory and effector activities of NO and Reactive Nitrogen Species (RNS). In particular, we will summarize recent knowledge of the molecular mechanisms underlying the complex functions of NO in cancer pathogenesis. We will also address emerging immune-mediated mechanisms regulated by NO to provide a comprehensive view of the complex cellular interactions which control cancer progression and that can be influenced by NO at multiple levels. In the light of different immunologic effects of this molecule, the potential therapeutic implications of novel drugs targeting NO to treat cancer and to improve anti-tumor immune responses will be discussed.
journal_name
Curr Med Chemjournal_title
Current medicinal chemistryauthors
Fionda C,Abruzzese MP,Santoni A,Cippitelli Mdoi
10.2174/0929867323666160727105101subject
Has Abstractpub_date
2016-01-01 00:00:00pages
2618-2636issue
24eissn
0929-8673issn
1875-533Xpii
CMC-EPUB-77370journal_volume
23pub_type
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