Protective effect of CpG-oligodeoxynucleotides against low- and high-LET irradiation.
Cell Physiol Biochem
; 34(5): 1663-74, 2014.
Article
en En
| MEDLINE
| ID: mdl-25401481
ABSTRACT
BACKGROUND/AIMS:
CpG-oligodeoxynucleotides (ODNs) are synthetic DNA sequences containing unmethylated cytosine-guanine motifs with potent immunomodulatory effects. Previous reports showed a powerful protective effect of CpG-ODN against the damage induced by low-LET γ-rays. In this study, we explored whether CpG-ODN also protects against the damage induced by high-LET irradiation. Parallel experiments were performed with low-LET irradiation.METHODS:
RAW264.7 cells were incubated with 1 µM of CpG-ODN after γ-ray or carbon-beam irradiation. Cell death was then measured by PI/DAPI double staining, cell survival was assessed by colony-formation assays, DNA damage was evaluated by comet assays, cell cycle was monitored by flow cytometry, and the levels of apoptosis-related proteins were detected by western blots.RESULTS:
When irradiated cells were treated with the CpG-ODN, cell viability decreased, cell survival increased, DNA damage and G2/M-phase arrest were ameliorated, and apoptosis was inhibited.CONCLUSIONS:
The CpG-ODN showed protective effects against low-LET γ-ray and high-LET carbon-beam irradiation. These effects might be associated with the repair of DNA damage and inhibition of apoptosis.
Texto completo:
1
Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Oligodesoxirribonucleótidos
/
Daño del ADN
/
Supervivencia Celular
/
Sustancias Protectoras
/
Rayos gamma
Límite:
Animals
Idioma:
En
Revista:
Cell Physiol Biochem
Asunto de la revista:
BIOQUIMICA
/
FARMACOLOGIA
Año:
2014
Tipo del documento:
Article
País de afiliación:
China