CRAdRGDflt-IL24 virotherapy in combination with chemotherapy of experimental glioma.

CRAdRGDflt-IL24 virotherapy in combination with chemotherapy of experimental glioma.
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DOI:
10.1038/cgt.2009.23
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发表时间:
2009-10
影响因子:
6.4
通讯作者:
--
中科院分区:
医学3区
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恶性胶质瘤是最常见的原发脑肿瘤,对包括化疗在内的多种治疗干预措施的反应仍然很差。细胞凋亡抑制和侵袭性异常是脑胶质瘤恶性表型的重要特征。我们构建了编码白介素24(IL-24)基因的血管内皮生长因子受体1(VEGFR-1/Flt-1)条件复制腺病毒载体(CRAdRGDflt-IL24)。我们调查了CRAdRGDflt-IL24介导的溶瘤病毒治疗和使用替莫唑胺(TMZ)化疗的组合是否与单独使用这些药物相比产生了对人胶质瘤细胞的更高的细胞毒性。与单独应用CRAdRGDflt-IL24或TMZ相比,CRAdRGDflt-IL24与TMZ联合应用可显著增强体外细胞毒作用,抑制D54 MG肿瘤生长,延长荷瘤小鼠的生存时间。这些数据表明,CRAdRGDflt-IL24介导的溶瘤病毒治疗和TMZ化疗的联合治疗为胶质瘤的治疗提供了一种有前途的方法。
Malignant forms of glioma, the most common primary brain tumors, remain poorly responsive to multimodality therapeutic interventions, including chemotherapy. Suppressed apoptosis and extraordinary invasiveness are important distinctive features that contribute to the malignant phenotype of glioma. We have developed the vascular endothelial growth factor receptor 1 (VEGFR-1/flt-1) conditional replicating adenoviral vector (CRAdRGDflt-IL24) encoding the interleukin-24 (IL-24) gene. We investigated whether a combination of CRAdRGDflt-IL24-mediated oncolytic virotherapy and chemotherapy using temozolomide (TMZ) produces increased cytotoxicity against human glioma cells in comparison with these agents alone. Combination of CRAdRGDflt-IL24 and TMZ significantly enhanced cytotoxicity in vitro, inhibited D54MG tumor growth and prolonged survival of mice harboring intracranial human glioma xenografts in comparison with CRAdRGDflt-IL24 or TMZ alone. These data indicate that combined treatment with CRAdRGDflt-IL24-mediated oncolytic virotherapy and TMZ chemotherapy provides a promising approach for glioma therapy.
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