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Suicide gene therapy of sarcoma cell lines using recombinant adeno-associated virus 2 vectors.
Cancer Gene Therapy ( IF 6.4 ) Pub Date : 2004-07-29 , DOI: 10.1038/sj.cgt.7700718
Marlon R Veldwijk 1 , Simone Berlinghoff , Stephanie Laufs , Ulrich R Hengge , W Jens Zeller , Frederik Wenz , Stefan Fruehauf
Affiliation  

Soft-tissue sarcomas are mesenchymal tumors that respond poorly to systemic chemotherapy. Suicide gene therapy may be an alternative treatment strategy. Here we show a high susceptibility of human sarcoma cell lines for recombinant adeno-associated virus 2 (rAAV-2) suicide vectors: connective tissue sarcoma (HS-1), fibrosarcoma (HT-1080), Ewing sarcoma (RD-ES), Askin tumor (SK-N-MC), rhabdomyosarcoma (A-204) and soft-tissue sarcoma (WSKL-1). Several vectors containing the thymidine kinase (TK) gene under the control of either the cytomegalovirus promoter or the elongation-factor 1 alpha (EF1alpha) promoter were cloned and tested. Higher expression levels of the transgene were observed in the sarcoma lines when using the EF1alpha-suicide gene-containing vectors. A complete eradication of rAAV-2-EF1alpha-TK/eGFP (TK/enhanced green fluorescent protein fusion gene)-transduced tumor cells was shown following exposure to ganciclovir (2.5 microg/ml) in vitro, while at this dose level > 90% of mock-transduced tumor cells survived. Xenotransplantation tumor models (intraperitoneal, subcutaneous) for the human sarcoma cell line HS-1 were established in nonobese diabetic/severe-combined immunodeficient mice. Mice transplanted with rAAV-2-EF1alpha-TK/eGFP-transduced and ganciclovir-exposed tumor cells survived > 5 months while in the nontransduced group all mice had died approximately 1 month after inoculation. These data hold promise for further development of rAAV-2-based suicide gene therapy of sarcomas.

中文翻译:

使用重组腺相关病毒2载体对肉瘤细胞系进行自杀基因治疗。

软组织肉瘤是对全身化疗反应较差的间质肿瘤。自杀基因疗法可能是另一种治疗策略。在这里,我们显示出人类肉瘤细胞株对重组腺相关病毒2(rAAV-2)自杀载体的敏感性高:结缔组织肉瘤(HS-1),纤维肉瘤(HT-1080),尤因肉瘤(RD-ES),阿斯金瘤(SK-N-MC),横纹肌肉瘤(A-204)和软组织肉瘤(WSKL-1)。克隆并测试了几种在巨细胞病毒启动子或延伸因子1α(EF1alpha)启动子控制下含有胸苷激酶(TK)基因的载体。当使用含有EF1α-自杀基因的载体时,在肉瘤系中观察到转基因的较高表达水平。在体外暴露于更昔洛韦(2.5微克/毫升)后,以rAAV-2-EF1alpha-TK / eGFP(TK /增强型绿色荧光蛋白融合基因)转导的肿瘤细胞被完全清除,而该剂量水平> 90%模拟转导的肿瘤细胞存活。在非肥胖糖尿病/严重合并免疫缺陷小鼠中建立了人肉瘤细胞系HS-1的异种移植肿瘤模型(腹膜内,皮下)。移植有rAAV-2-EF1alpha-TK / eGFP转导和更昔洛韦暴露的肿瘤细胞的小鼠存活> 5个月,而在非转导组中,所有小鼠在接种后约1个月都死亡。这些数据有望进一步开发基于rAAV-2的肉瘤自杀基因疗法。5微克/毫升),而在此剂量水平下> 90%的模拟转导肿瘤细胞存活。在非肥胖糖尿病/严重合并免疫缺陷小鼠中建立了人肉瘤细胞系HS-1的异种移植肿瘤模型(腹膜内,皮下)。移植有rAAV-2-EF1alpha-TK / eGFP转导和更昔洛韦暴露的肿瘤细胞的小鼠存活> 5个月,而在非转导组中,所有小鼠在接种后约1个月都死亡。这些数据有望进一步开发基于rAAV-2的肉瘤自杀基因疗法。5微克/毫升),而在此剂量水平下> 90%的模拟转导肿瘤细胞存活。在非肥胖糖尿病/严重合并免疫缺陷小鼠中建立了人肉瘤细胞系HS-1的异种移植肿瘤模型(腹膜内,皮下)。移植有rAAV-2-EF1alpha-TK / eGFP转导和更昔洛韦暴露的肿瘤细胞的小鼠存活> 5个月,而在非转导组中,所有小鼠在接种后约1个月都死亡。这些数据有望进一步开发基于rAAV-2的肉瘤自杀基因疗法。移植有rAAV-2-EF1alpha-TK / eGFP转导和更昔洛韦暴露的肿瘤细胞的小鼠存活> 5个月,而在非转导组中,所有小鼠在接种后约1个月都死亡。这些数据有望进一步开发基于rAAV-2的肉瘤自杀基因疗法。移植有rAAV-2-EF1alpha-TK / eGFP转导和更昔洛韦暴露的肿瘤细胞的小鼠存活> 5个月,而在非转导组中,所有小鼠在接种后约1个月都死亡。这些数据有望进一步开发基于rAAV-2的肉瘤自杀基因疗法。
更新日期:2019-11-01
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