Effect of triplex forming oligonucleotide of PDGF-B chain on tumor growth and cell cycle of rat glioma
- VernacularTitle:PDGF-B链基因的三链形成寡核苷酸对大鼠脑胶质瘤生长及细胞周期的影响
- Author:
Weifang LI
;
Dingbiao ZHOU
;
Xinguang YU
;
Youxi JIN
- Publication Type:Journal Article
- Keywords:
glioma;
platelet-derived growth factor;
triplex forming oligonucleotide;
proliferation;
cell cycle
- From:
Academic Journal of Second Military Medical University
2001;0(09):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective:To observe the effect of triplex forming oligonucleotide(TFO) of PDGF-B chain on cell proliferation and cell cycle of rat glioma.Methods:1?10 6 C 6 glioma cells with high-flow microinfusion were seeded into right caudate putamen of rats.TFO was used in situ a week after glioma cell inoculation.The treatment groupⅠandⅡwere treated with 1.5 mg/20 ?l and 3.0 mg/20 ?l TFO respectively on 8,11 and 14 d after cell inoculation.The control group was treated with 20 ?l normal saline with the same procedure.Three weeks after cell inoculation all rats were killed and samples were detected with macroscopic,microscopic histology and immunofluorescence flow cytometric analysis.Results:The inhibition rates of tumor growth were 66.1% in the treatment groupⅠand 91.8% in the treatment group Ⅱ.TFO specifically blocked expressions of PDGF-B and PCNA of glioma cells in a concentration-dependent fashion. TFO obviously inhibited the transit of cells from the G 0-G 1 to S phase in a concentration-dependent fashion.Conclusion:TFO can commendably block PDGF-B expression,inhibit cell proliferation and induce C 6 glioma cells arrest in the G 1 phase,and thus inhibit tumor growth of glioma.
