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Amplification and novel locations of endogenous mouse mammary tumor virus genomes in mouse T-cell lymphomas.

机译:小鼠T细胞淋巴瘤中内源小鼠乳腺肿瘤病毒基因组的扩增和新颖。

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摘要

Endogenous mouse mammary tumor virus genomes are amplified and located in novel cell DNA sequences in many mouse T-cell lymphomas. Transplanted tumors recovered from the same mouse strain and shown to be of independent origin by chromosomal analysis, by the presence of JH immunoglobulin gene rearrangements, or by the integration patterns of exogenous Moloney MuLV genomes frequently showed similar patterns of novel mouse mammary tumor virus-containing cell DNA fragments. This process of amplification and relocation can occur within a limited number of cell generations and in C57BL/6 mice does not lead to the synthesis of mature virus-encoded proteins. In some instances, amplified mouse mammary tumor virus genomes contained novel restriction cleavage sites in the gag-pol region. The restricted time course of occurrence, lack of synthesis of mature virion proteins, and apparent site specificity indicate that this process of retrovirus amplification differs significantly from virus replication after exogenous infection.
机译:在许多小鼠T细胞淋巴瘤中扩增内源性小鼠乳腺肿瘤病毒基因组并位于新的小鼠T细胞淋巴瘤中的新细胞DNA序列中。从相同的小鼠菌株中回收的移植肿瘤并通过染色体分析显示出独立的来源,通过JH免疫球蛋白基因重排,或通过外源Moloney Mulv基因组的整合模式经常显示出类似的含有新型小鼠乳腺肿瘤病毒的模式细胞DNA片段。该扩增和迁移过程可以发生在有限数量的细胞代中,并且在C57BL / 6小鼠中不会导致成熟病毒编码蛋白的合成。在一些情况下,扩增的小鼠乳腺肿瘤病毒基因组含有GAG-POL区域中的新型限制性切割位点。局限性的发生时间,缺乏成熟病毒蛋白蛋白的合成,以及表观位点特异性表明,这种逆转录病毒扩增的过程与外源感染后病毒复制显着不同。

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  • 来源
    《Journal of Virology》 |1984年第1期|共10页
  • 作者

    J Dudley; R Risser;

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  • 收录信息 美国《科学引文索引》(SCI);
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