Characterization, expression and silencing by RNAi of p53 from Penaeus monodon

文献类型： 外文期刊

第一作者： Dai, Wenting

作者： Dai, Wenting;Qiu, Lihua;Zhao, Chao;Fu, Mingjun;Ma, Zhenhua;Zhou, Falin;Yang, Qibin;Qiu, Lihua;Zhao, Chao;Fu, Mingjun;Ma, Zhenhua;Zhou, Falin;Yang, Qibin;Dai, Wenting;Yang, Qibin

作者机构：

关键词： Pmp53;Gene cloning;RT-qPCR;RNAi;Ovarian development;Penaeus monodon

期刊名称：MOLECULAR BIOLOGY REPORTS （ 影响因子：2.316； 五年影响因子：2.357 ）

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收录情况： SCI

摘要： The tumor suppressor p53 is a sequence-specific transcription factor, whose target genes can regulate genomic stability, the cellular response to DNA damage and cell-cycle progression. In the present study, the full-length complementary DNA (cDNA) sequence of p53 gene from Penaeus monodon (Pmp53) was cloned by the technology of rapid amplification of cDNA ends (RACE). The cDNA of Pmp53 was 2239 bp, encoding a protein of 450 amino acids with calculated molecular weight of 50.62 kDa. The temporal expression of Pmp53 in different tissues (ovary, heart, intestine, brain, muscles, stomach and gills) and different developmental stages of ovary was investigated by real-time quantitative PCR (RT-qPCR). The lowest expression level of Pmp53 was observed in the stomach, while the highest expression level was detected in the brain. During the ovary development stages, the expression level of Pmp53 reached the peak at stage III. RNA interference (RNAi) and serotonin (5-hydroxytryptamine, 5-HT) injection experiments were conducted to study the expression profile of Pmp53 and PmCDK2 (cyclin-dependent kinase 2, CDK2). Knocked down of Pmp53 by dsRNA-p53 was sequence-specific and successful. Expression levels of Pmp53 and PmCDK2 in ovary of P. monodon were significantly increased at 12-96 h post 5-HT injection. These results indicate that Pmp53 may be involved in the regulation of ovarian development of P. monodon.

分类号： Q7

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