Oncolytic activity of Sindbis virus in human oral squamous carcinoma cells.

Oncolytic activity of Sindbis virus in human oral squamous carcinoma cells.
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DOI:
10.1038/sj.bjc.6605209
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发表时间:
2009-08-18
影响因子:
8.8
通讯作者:
--
中科院分区:
医学1区
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--
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Sindbis病毒(SIN)感染在人类中不引起或仅引起轻微症状(发烧、皮疹和关节痛)。然而,SIN对多种癌细胞具有很强的细胞病变作用(CPE)。本研究的重点是比较SIN AR399与呼肠孤病毒(一种众所周知的靶向癌细胞的溶瘤病毒)对口腔癌细胞的溶瘤活性。我们分析了13种口腔鳞状细胞癌(OSCC)细胞系(HSC-2、HSC-3、HSC-4、Ca9-22、H-1、Sa-3、KON、KOSC-2、OK-92、HO-1-N1、SCC-4、SAT、SKN-3)和正常人口腔角质形成细胞(NHOKs)中SIN的细胞毒性和生长情况。Sindbis病毒感染在12株OSCC细胞系中诱导CPE, MOI为0.01,但在OSCC细胞系、HSC-4和NHOKs中未发生CPE。在NHOKs中未观察到Sindbis病毒生长,而在包括HCS-4在内的所有OSCC细胞系中均观察到高SIN生长。在12株OSCC细胞株中,SIN的细胞毒性和生长与呼肠孤病毒相同,MOI为20。通过末端脱氧核糖核苷酸转移酶介导的dUTP镍端标记试验显示,CPE是凋亡细胞死亡。此外,对SIN感染后HSC-3和HSC-4细胞mRNA的定量RT-PCR分析显示,caspase、细胞色素c和i - κ b α的激活与SIN诱导的细胞凋亡有关。作为一种具有复制能力的溶瘤病毒,SIN可能是一种有用的口腔癌治疗方式。
Sindbis virus (SIN) infection causes no or only mild symptoms (fever, rash, and arthralgia) in humans. However, SIN has a strong cytopathic effect (CPE) on various cancer cells. This study focuses on the oncolytic activity of SIN AR399 on oral cancer cells compared with reovirus, a well-known oncolytic virus that targets cancer cells. We analysed the cytotoxicity and growth of SIN in 13 oral squamous cell carcinoma (OSCC) cell lines (HSC-2, HSC-3, HSC-4, Ca9-22, H-1, Sa-3, KON, KOSC-2, OK-92, HO-1-N1, SCC-4, SAT, SKN-3) and normal human oral keratinocytes (NHOKs). Sindbis virus infection induced CPE in 12 OSCC cell lines at a low multiplicity of infection (MOI) of 0.01, but not in the OSCC cell line, HSC-4 or NHOKs. Sindbis viral growth was not observed in NHOKs, whereas high SIN growth was observed in all OSCC cell lines, including HCS-4. The cytotoxicity and growth of SIN was the same as reovirus at an MOI of 20 in 12 OSCC cell lines. The CPE was shown, by terminal deoxyribonucleotidyl transferase–mediated dUTP nick-end labelling assays, to be apoptotic cell death. Furthermore, quantitative RT-PCR of mRNA in HSC-3 and HSC-4 cells after SIN infection showed that activation of caspases, cytochrome c, and IκBα was associated with SIN-induced apoptosis. As a replication-competent oncolytic virus, SIN may be a useful therapeutic modality for oral cancers.
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