Positive Regulation of Interleukin-1ß Bioactivity by Physiological ROS-Mediated Cysteine S-Glutathionylation.
Cell Rep
; 20(1): 224-235, 2017 07 05.
Article
em En
| MEDLINE
| ID: mdl-28683316
Reactive oxygen species (ROS)-induced cysteine S-glutathionylation is an important posttranslational modification (PTM) that controls a wide range of intracellular protein activities. However, whether physiological ROS can modulate the function of extracellular components via S-glutathionylation is unknown. Using a screening approach, we identified ROS-mediated cysteine S-glutathionylation on several extracellular cytokines. Glutathionylation of the highly conserved Cys-188 in IL-1ß positively regulates its bioactivity by preventing its ROS-induced irreversible oxidation, including sulfinic acid and sulfonic acid formation. We show this mechanism protects IL-1ß from deactivation by ROS in an in vivo system of irradiation-induced bone marrow (BM) injury. Glutaredoxin 1 (Grx1), an enzyme that catalyzes deglutathionylation, was present and active in the extracellular space in serum and the BM, physiologically regulating IL-1ß glutathionylation and bioactivity. Collectively, we identify cysteine S-glutathionylation as a cytokine regulatory mechanism that could be a therapeutic target in the treatment of various infectious and inflammatory diseases.
Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Processamento de Proteína Pós-Traducional
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Espécies Reativas de Oxigênio
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Interleucina-1beta
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Glutationa
Limite:
Animals
Idioma:
En
Revista:
Cell Rep
Ano de publicação:
2017
Tipo de documento:
Article
País de publicação:
Estados Unidos