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首页> 外文期刊>Journal of Virology >Transformation of rodent cells by DNA extracted from transformation-defective adenovirus mutants.
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Transformation of rodent cells by DNA extracted from transformation-defective adenovirus mutants.

机译:从转化缺陷腺病毒突变体中提取的DNA转化啮齿动物细胞。

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摘要

Complementation group II host range mutants of adenovirus type 5 which map in early region 1B (E1B, 4.5 to 11.0 map units) have been shown to be defective for the synthesis of the E1B 58,000-dalton (58K) antigen in infections of HeLa or KB cells (Lassam et al., Cell 18:781-791, 1979) and unable to transform cultured rodent cells (Graham et al., Virology 86:10-21, 1978). In this report we show that DNA extracted from group II mutants hr6 and hr50 can transform rat cells with the same efficiency as wild-type DNA. Furthermore, group II mutant-transformed hamster cells were shown to contain no detectable E1B 58K tumor antigen but were capable of inducing tumors in newborn hamsters. Hamster cell lines 1019-3 and 1019-C3, transformed by hr50 DNA, produced no detectable quantities of either the E1B 58K or 19K antigen but nonetheless exhibited a fully transformed oncogenic phenotype. Our results show that the E1B 58K antigen is not absolutely required for oncogenic transformation and suggest that even cells lacking the 19K protein can be oncogenic.
机译:辅酶II腺病毒型5的宿主范围突变体,其在早期区域1b(E1b,4.5至11.0映射单元)中,已经显示出对Hela或Kb感染的E1b 58,000-dalton(58k)抗原的合成有缺陷细胞(Lassam等,细胞18:781-791,1979),不能转化培养的啮齿动物细胞(Graham等,病毒学86:10-21,1978)。在本报告中,我们表明,从二组突变体HR6和HR50中提取的DNA可以转化与野生型DNA相同效率的大鼠细胞。此外,第二族突变体转化的仓鼠细胞显示不含有可检测的E检测的E1B 58K肿瘤抗原,但能够在新生儿仓鼠中诱导肿瘤。由HR50 DNA转化的仓鼠细胞系1019-3和1019-C3,不产生任何可检测量的E1B 58K或19K抗原,但仍未显示出完全转化的致癌表型。我们的研究结果表明,致癌转化不需要E1B 58K抗原,并表明缺乏19K蛋白的细胞可以是致癌的。

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