首页> 外文期刊>Journal of Cancer Research and Clinical Oncology >High-efficiency transfer and expression of AdCMV-p53 in human cervix adenocarcinoma cells induced by subclinical-dose carbon beam radiation.
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High-efficiency transfer and expression of AdCMV-p53 in human cervix adenocarcinoma cells induced by subclinical-dose carbon beam radiation.

机译:亚临床剂量碳束辐射诱导人宫颈腺癌细胞中AdCMV-p53的高效转移和表达。

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PURPOSE: The aim of this study is to evaluate the effect of carbon-beam irradiation on adenovirus-mediated p53 transfer in human cervix adenocarcinoma. MATERIALS AND METHODS: The HeLa cells pre-exposed to carbon-beam or gamma-ray, were infected with replication-deficient adenovirus recombinant vectors, containing human wild-type p53 (AdCMV-p53) and green fluorescent protein (GFP) (AdCMV-GFP), respectively. The GFP transfer and p53 expression were detected by flow cytometric analysis. RESULTS: The GFP transfer frequency in C-beam with AdCMV-GFP groups was 38-50% more than that in gamma-ray with AdCMV-GFP groups. The percentage of p53 positive cells in the C-beam with AdCMV-p53 groups was 34-55.6% more than that in gamma-ray with AdCMV-p53 groups (p < 0.05), suggesting that subclinical-dose C-beam irradiation could significantly promote exogenous p53 transfer and p53 expression, and extend the duration of p53 expression in the HeLa cells. The expression of p21 increased with p53 expression in HeLa cells. The survival fractions for the 0.5-1.0 Gy C-beam with AdCMV-p53 groups were 38-43% less than those for the isodose gamma-ray with AdCMV-p53 groups, and 31-40% less than those for the C-beam only groups (p < 0.05). CONCLUSIONS: The subclinical-dose C-beam irradiation could significantly promote the transfer and expression of exogenous p53, extend the duration of p53 expression, and enhance the suppression of p53 on cervix adenocarcinoma cells.
机译:目的:本研究的目的是评估碳束辐射对人宫颈腺癌中腺病毒介导的p53转移的影响。材料和方法:将预先暴露于碳束或伽马射线的HeLa细胞用复制缺陷型腺病毒重组载体感染,该载体含有人野生型p53(AdCMV-p53)和绿色荧光蛋白(GFP)(AdCMV- GFP)。通过流式细胞术分析检测GFP的转移和p53表达。结果:AdCMV-GFP组在C射线中的GFP转移频率比AdCMV-GFP组在γ射线中的GFP转移频率高38-50%。 AdCMV-p53组的C射线中p53阳性细胞的百分比比AdCMV-p53组的γ射线高34-55.6%(p <0.05),这表明亚临床剂量C射线照射可以显着提高促进外源性p53转移和p53表达,并延长HeLa细胞中p53表达的持续时间。在HeLa细胞中,p21的表达随p53的表达而增加。 AdCMV-p53组的0.5-1.0 Gy C射线的存活分数比AdCMV-p53组的等剂量伽马射线的存活分数低38-43%,比C射线的存活分数低31-40%仅组(p <0.05)。结论:亚临床剂量C型束照射可显着促进外源p53的转移和表达,延长p53表达的持续时间,并增强对宫颈腺癌细胞的p53抑制作用。

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