IGF-1 prevents oxidative stress induced-apoptosis in induced pluripotent stem cells which is mediated by microRNA-1.
Biochem Biophys Res Commun
; 426(4): 615-9, 2012 Oct 05.
Article
em En
| MEDLINE
| ID: mdl-22982320
ABSTRACT
Oxidative stress contributes to tissue injury and cell death during the development of various diseases. The present study aims at investigating whether oxidative stress triggered by the exposure to hydrogen peroxide (H(2)O(2)) can induce apoptosis of induced pluripotent stem cells (iPS cells) in a mechanism mediated by insulin-like growth factor (IGF-1) and microRNA-1 (miR-1). iPS cells treated with H(2)O(2) showed increases in miR-1 expression, mitochondria dysfunction, cytochrome-c release and apoptosis, Addition of IGF-1 into the iPS cell cultures reduced the H(2)O(2) cytotoxicity. Prediction algorithms showed that 3'-untranslated regions of IGF-1 gene as a target of miR-1. Moreover, miR-1 mimic, but not miR-1 mimic negative control, diminished the protective effect of IGF-1 on H(2)O(2)-induced mitochondrial dysfunction, cytochrome-c release and apoptosis in iPS cells. In conclusion, IGF-1 inhibits H(2)O(2)-induced mitochondrial dysfunction, cytochrome-c release and apoptosis. IGF-1's effect is, at least partially, regulated by miR-1 in iPS cells.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Fator de Crescimento Insulin-Like I
/
Apoptose
/
Estresse Oxidativo
/
MicroRNAs
/
Células-Tronco Pluripotentes Induzidas
Idioma:
En
Ano de publicação:
2012
Tipo de documento:
Article