Disruption of HPV16-E7 by CRISPR/Cas system induces apoptosis and growth inhibition in HPV16 positive human cervical cancer cells.

Disruption of HPV16-E7 by CRISPR/Cas system induces apoptosis and growth inhibition in HPV16 positive human cervical cancer cells.
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CRISPR/Cas 系统破坏 HPV16-E7 诱导 HPV16 阳性人宫颈癌细胞凋亡和生长抑制

DOI:
10.1155/2014/612823
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发表时间:
2014
影响因子:
--
通讯作者:
Wang H
Wang H
中科院分区:
生物学3区
文献类型:
--
作者:
Hu Z;Yu L;Zhu D;Ding W;Wang X;Zhang C;Wang L;Jiang X;Shen H;He D;Li K;Xi L;Ma D;Wang H

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高危型人乳头瘤病毒(HR - HPV)已被确认为宫颈癌的主要致病因素。在HPV感染后,早期基因E6和E7在维持宫颈癌细胞的恶性表型方面发挥着重要作用。通过使用成簇规律间隔短回文重复序列 - (CRISPR -)相关蛋白系统(CRISPR/Cas系统),这是一种在许多生物体中广泛使用的基因编辑工具,针对HPV阳性细胞系中的HPV16 - E7 DNA,我们首次表明,HPV16 - E7单向导RNA(sgRNA)引导的CRISPR/Cas系统能够在特定位点破坏HPV16 - E7 DNA,诱导HPV阳性的SiHa和Caski细胞凋亡和生长抑制,但在HPV阴性的C33A和HEK293细胞中则无此作用。此外,E7 DNA的破坏直接导致E7蛋白的下调和肿瘤抑制蛋白pRb的上调。因此,我们的研究结果表明,HPV16 - E7 gRNA引导的CRISPR/Cas系统可能被用作治疗宫颈癌的一种治疗策略。
High-risk human papillomavirus (HR-HPV) has been recognized as a major causative agent for cervical cancer. Upon HPV infection, early genes E6 and E7 play important roles in maintaining malignant phenotype of cervical cancer cells. By using clustered regularly interspaced short palindromic repeats- (CRISPR-) associated protein system (CRISPR/Cas system), a widely used genome editing tool in many organisms, to target HPV16-E7 DNA in HPV positive cell lines, we showed for the first time that the HPV16-E7 single-guide RNA (sgRNA) guided CRISPR/Cas system could disrupt HPV16-E7 DNA at specific sites, inducing apoptosis and growth inhibition in HPV positive SiHa and Caski cells, but not in HPV negative C33A and HEK293 cells. Moreover, disruption of E7 DNA directly leads to downregulation of E7 protein and upregulation of tumor suppressor protein pRb. Therefore, our results suggest that HPV16-E7 gRNA guided CRISPR/Cas system might be used as a therapeutic strategy for the treatment of cervical cancer.
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