Avian leukosis virus-induced tumors have common proviral integration sites and synthesize discrete new RNAs: oncogenesis by promoter insertion

Avian leukosis virus-induced tumors have common proviral integration sites and synthesize discrete new RNAs: oncogenesis by promoter insertion
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禽白血病病毒诱导的肿瘤具有共同的前病毒整合位点并合成离散的新RNA:启动子插入导致肿瘤发生

DOI:
10.1016/0092-8674(81)90128-8
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发表时间:
1981
期刊:
影响因子:
64.5
通讯作者:
S. Astrin
S. Astrin
中科院分区:
生物学1区
文献类型:
--
作者:
B. Neel;W. S. Hayward;H. Robinson;J. Fang;S. Astrin

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与其他RNA肿瘤病毒不同,禽白血病病毒(引起淋巴瘤和偶尔其他肿瘤)缺乏离散的“转化基因”。我们分析了禽白血病病毒(ALV)诱发肿瘤的病毒相关DNA和RNA,试图了解ALV致癌的机制。我们的研究结果表明,病毒基因产物不需要维持肿瘤转化。原发性和转移性肿瘤是克隆性的,因此可能来源于单个感染细胞。最重要的是,来自不同鸟类的肿瘤具有共同的整合位点。肿瘤细胞合成离散的新poly(A)RNA,其由共价连接到细胞序列的病毒序列组成。这些RNA种类在肿瘤细胞中以高水平表达。我们的研究结果表明,在淋巴肿瘤中,ALV前病毒是集成相邻的一个特定的细胞基因,和插入的病毒启动子相邻的这个基因的结果在其增强的表达,导致肿瘤。这些结果对非病毒致癌机制具有潜在的重要意义。
Unlike other RNA tumor viruses, avian leukosis viruses (which cause lymphomas and occasionally other neoplasms) lack discrete“transforming genes”. We have analyzed the virus-related DNA and RNA of avian leukosis virus (ALV)-induced tumors in an attempt to gain insight into the mechanism of ALV oncogenesis. Our results show that viral gene products are not required for maintenance of neoplastic transformation. Primary and metastatic tumors are clonal and thus presumably derived from a single infected cell. Most importantly, tumors from different birds have integration sites in common. Tumor cells synthesize discrete new poly (A) RNAs consisting of viral sequences covalently linked to cellular sequences. These RNA species are expressed at high levels in tumor cells. Our results suggest that in lymphoid tumors, an ALV provirus is integrated adjacent to a specific cellular gene, and the insertion of the viral promoter adjacent to this gene results in its enhanced expression, leading to neoplasia. These results have potentially important implications for the mechanism of nonviral carcinogenesis.
禽类骨髓细胞瘤病毒推定转化基因的脊椎动物同源物:DNA 位点及其 RNA 转录本的特征。
DOI: 10.1016/0042-6822(80)90042-2
发表时间: 1980
期刊: Virology
影响因子: 3.7
作者:
Sheiness,DK;Hughes,SH;Varmus,HE;Stubblefield,E;Bishop,JM
通讯作者: Bishop,JM
鸡中 E 亚组禽白血病病毒相关疾病。
DOI: 10.1101/sqb.1980.044.01.122
发表时间: 1980
期刊: Cold Spring Harbor symposia on quantitative biology
影响因子: --
作者:
Robinson,HL;Pearson,MN;DeSimone,DW;Tsichlis,PN;Coffin,JM
通讯作者: Coffin,JM
内源禽原病毒的转录产物和 DNA 结构。
DOI: 10.1101/sqb.1980.044.01.120
发表时间: 1980
期刊: Cold Spring Harbor symposia on quantitative biology
影响因子: --
作者:
Hayward,WS;Braverman,SB;Astrin,SM
通讯作者: Astrin,SM
感染禽肉瘤病毒的哺乳动物细胞中病毒 DNA 和 RNA 的结构。
DOI: 10.1016/0022-2836(80)90218-1
发表时间: 1980
影响因子: 5.6
作者:
Quintrell,N;Hughes,SH;Varmus,HE;Bishop,JM
通讯作者: Bishop,JM