Peroxynitrite: a multifaceted oxidizing and nitrating metabolite.
Curr Opin Chem Biol
; 80: 102459, 2024 Jun.
Article
en En
| MEDLINE
| ID: mdl-38723343
ABSTRACT
Peroxynitrite, a short-lived and reactive oxidant, emerges from the diffusion-controlled reaction between the superoxide radical and nitric oxide. Evidence shows that peroxynitrite is a critical mediator in physiological and pathological processes such as the immune response, inflammation, cancer, neurodegeneration, vascular dysfunction, and aging. The biochemistry of peroxynitrite is multifaceted, involving one- or two-electron oxidations and nitration reactions. This minireview highlights recent findings of peroxynitrite acting as a metabolic mediator in processes ranging from oxidative killing to redox signaling. Selected examples of nitrated proteins (i.e., 3-nitrotyrosine) are surveyed to underscore the role of this post-translational modification on cell homeostasis. While accumulated evidence shows that large amounts of peroxynitrite participates of broad oxidation and nitration events in invading pathogens and host tissues, a closer look supports that low to moderate levels selectively trigger signal transduction cascades. Peroxynitrite probes and redox-based pharmacology are instrumental to further understand the biological actions of this reactive metabolite.
Palabras clave
Texto completo:
1
Bases de datos:
MEDLINE
Asunto principal:
Oxidación-Reducción
/
Ácido Peroxinitroso
Límite:
Animals
/
Humans
Idioma:
En
Revista:
Curr Opin Chem Biol
Asunto de la revista:
BIOQUIMICA
Año:
2024
Tipo del documento:
Article
País de afiliación:
Uruguay