The present invention relates to innovative protoparvoviruses (PV) expressing RNAi effectors, preferably shRNAs, against the CDK9 gene which display improved anticancer activity. These new viruses are based on the ΔH-1PVsilencer platform that consists of a protoparvovirus H-1PV featuring an in-frame deletion within the NS region (ΔH-1PV) and harbouring a shRNA expression cassette in which the expression of the shRNA is controlled by the H1 Polymerase III promoter. In this invention the inventors aimed to use the ΔH-1PVsilencer to silence the CDK9 gene whose activity is often dysregulated in cancer cells and known to contribute to tumorigenesis. The present invention also provides cells or organisms comprising said parvovirus.
本发明涉及表达针对 CDK9
基因的 RNAi 效应子(最好是 shRNA)的创新型原杆状病毒 (PV),这些病毒具有更好的抗癌活性。这些新病毒以 ΔH-1PVsilencer 平台为基础,该平台由在 NS 区(ΔH-1PV)内具有框内缺失的原巴拉夫病毒 H-1PV 组成,并含有 shRNA 表达盒,其中 shRNA 的表达受 H1 聚合酶 III 启动子控制。在本发明中,发明者旨在利用ΔH-1PV沉默子沉默 CDK9
基因,该
基因的活性在癌细胞中经常失调,已知会导致肿瘤发生。本发明还提供了包含所述副病毒的细胞或
生物体。