A novel anticancer therapy that simultaneously targets aberrant p53 and Notch activities in tumors.

A novel anticancer therapy that simultaneously targets aberrant p53 and Notch activities in tumors.
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一种同时针对肿瘤中异常 p53 和 Notch 活性的新型抗癌疗法

DOI:
10.1371/journal.pone.0046627
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发表时间:
2012
期刊:
影响因子:
3.7
通讯作者:
Ge S
Ge S
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Yao Y;Wang L;Zhang H;Wang H;Zhao X;Zhang Y;Zhang L;Fan X;Qian G;Hu JF;Ge S

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Notch信号通路通过维持肿瘤干细胞的自我更新活性在肿瘤发生中发挥重要作用,因此,有假说认为Notch信号通路的干扰可能抑制肿瘤的形成和进展。H101是一种重组溶瘤腺病毒,在缺乏完整p53的细胞中具有细胞溶解性,但无法根除癌症干细胞。在这项研究中,我们测试了一种新的策略,肿瘤基因治疗结合Notch 1-siRNA与H101溶瘤腺病毒。在HeLa-S3肿瘤细胞中,联合治疗阻断了Notch通路,并在p53失活的肿瘤中诱导了细胞凋亡。在荷有源自HeLa-S3细胞的异种移植肿瘤的裸鼠中,H101/Notch 1-siRNA疗法的组合抑制肿瘤生长。此外,Notch 1-siRNA在转录和翻译水平上增加了Hexon基因的表达,并促进了H101在肿瘤中的复制,从而增强了H101的溶瘤活性。这些数据证明了将联合收割机H101 p53靶向的溶瘤和抗Notch siRNA活性组合作为新型抗癌疗法的可行性。
Notch signaling pathway plays an important role in tumorigenesis by maintaining the activity of self-renewal of cancer stem cells, and therefore, it is hypothesized that interference of Notch signaling may inhibit tumor formation and progression. H101 is a recombinant oncolytic adenovirus that is cytolytic in cells lacking intact p53, but it is unable to eradicate caner stem cells. In this study, we tested a new strategy of tumor gene therapy by combining a Notch1-siRNA with H101 oncolytic adenovirus. In HeLa-S3 tumor cells, the combined therapy blocked the Notch pathway and induced apoptosis in tumors that are p53-inactive. In nude mice bearing xenograft tumors derived from HeLa-S3 cells, the combination of H101/Notch1-siRNA therapies inhibited tumor growth. Moreover, Notch1-siRNA increased Hexon gene expression at both the transcriptional and the translational levels, and promoted H101 replication in tumors, thereby enhancing the oncolytic activity of H101. These data demonstrate the feasibility to combine H101 p53-targted oncolysis and anti-Notch siRNA activities as a novel anti-cancer therapy.
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影响因子: 4.8
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