The pathogenicity and defectiveness of PRCII: a new type of avian sarcoma virus.

The pathogenicity and defectiveness of PRCII: a new type of avian sarcoma virus.
复制标题

新型禽肉瘤病毒PRCII的致病性和缺陷。

DOI:
10.1016/0042-6822(81)90522-5
复制
发表时间:
1981
期刊:
影响因子:
3.7
通讯作者:
Vogt,PK
Vogt,PK
中科院分区:
医学3区
文献类型:
--
作者:
Breitman,ML;Neil,JC;Moscovici,C;Vogt,PK

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禽肉瘤病毒PRCII(第二家禽研究中心)在体外转化成纤维细胞,在体内引起纤维黏液肉瘤。这些生长比劳斯肉瘤的潜伏期长。PRCII在复制上存在缺陷,并依赖于一种相关的辅助病毒,即PRCII AV,来产生具有传染性的后代。PRCII病毒包含A亚群和B亚群包膜决定因子。在PRCII单次感染中转化的非产生细胞不释放通过[3H]尿苷掺入或逆转录酶试验检测到的病毒颗粒。然而,转化病毒在与鸡白血病群的辅助病毒超感染后可以被拯救。免疫沉淀分析表明,prcii转化的非产生细胞不合成三个复制基因产物Pr76gag、Pr180gag-pol和gPr95env,但含有105,000分子量的病毒特异性蛋白。该PRCII-p105与抗gag血清可沉淀,但与抗pol血清、抗嫉妒血清或广泛反应性抗src血清不可沉淀。未发现p60srcin在prcii转化细胞中的表达。因此,PRCII代表了一种不同于劳斯肉瘤病毒及其亲缘病毒的新型禽肉瘤病毒。在相应的论文[Neilet al., Virology107 000(1980)]中,我们提出了证据,证明PRCII-p105含有未被其他转化癌病毒编码的新序列。
The avian sarcoma virus PRCII (Poultry Research Centre No. 2) transforms fibroblastsin vitroand causes fibromyxosarcomasin vivo. These growths develop after a longer period of latency than Rous sarcomas. PRCII is defective in replication and depends upon an associated helper virus, PRCII AV, for the production of infectious progeny. PRCII AV contains both subgroup A and B envelope determinants. Nonproducer cells transformed in single infection with PRCII do not release viral particles detectable by[3H]uridine incorporation or by reverse transcriptase assay. However, transforming virus can be rescued following super-infection with helper viruses of the chicken leukosis group. Immune precipitation analyses show that PRCII-transformed nonproducer cells do not synthesize the three replicative gene products, Pr76gag, Pr180gag-pol, and gPr95env, but contain a virus-specific protein of 105,000 molecular weight. This PRCII-p105 is precipitable with anti-gagserum, but not with anti-polserum, anti-envserum, or a broadly reactive anti-srcserum. No evidence was found for the expression of p60srcin PRCII-transformed cells. PRCII thus represents a new class of avian sarcoma virus distinct from Rous sarcoma virus and its relatives. In the accompanying paper[Neilet al., Virology107, 000 (1980)] we present evidence that PRCII-p105 contains novel sequences not encoded by other transforming oncoviruses.
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发表时间: 1979
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