Gewin L, Galloway D A
Division of Human Biology, Fred Hutchinson Cancer Research Center, Seattle, Washington 98109, USA.
J Virol. 2001 Aug;75(15):7198-201. doi: 10.1128/JVI.75.15.7198-7201.2001.
Human papillomavirus type 16 (HPV-16) E6 activates telomerase specifically in epithelial cells. The oncogene c-myc has also been shown to activate telomerase in several cell types. Here we show that while both HPV-16 E6 and c-myc require intact E boxes to transactivate the hTERT promoter, E6 does not induce hTERT transcription simply by inducing expression of c-myc. Moreover, hTERT transactivation by HPV-16 E6 correlates with its ability to bind the cellular E6-associated protein (E6AP), suggesting that E6 and E6AP may target a regulator of hTERT expression.
人乳头瘤病毒16型(HPV - 16)E6蛋白特异性地激活上皮细胞中的端粒酶。致癌基因c - myc也已证实在多种细胞类型中可激活端粒酶。在此我们表明,虽然HPV - 16 E6蛋白和c - myc都需要完整的E盒来反式激活hTERT启动子,但E6蛋白并非简单地通过诱导c - myc的表达来诱导hTERT转录。此外,HPV - 16 E6蛋白对hTERT的反式激活与其结合细胞E6相关蛋白(E6AP)的能力相关,这表明E6蛋白和E6AP可能靶向hTERT表达的一种调节因子。