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首页> 外文期刊>Archives of virology >Sequences of polycythemia-type Friend spleen focus-forming virus in clone-745-derived mouse erythroleukemia cells.
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Sequences of polycythemia-type Friend spleen focus-forming virus in clone-745-derived mouse erythroleukemia cells.

机译:克隆745衍生的小鼠红白血病细胞中的红细胞增多症型Friend脾脏聚焦形成病毒的序列。

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摘要

Friend leukemia virus complex consists of a replication-competent virus plus one of two replication-incompetent viruses, spleen focus-forming virus anemia virus or spleen focus-forming virus polycythemia virus. The replication-incompetent viruses induce rapid malignant transformation of erythroid precursor cells. Transformed cell lines from mice infected with the complex can be induced to undergo erythrodifferentiation in vitro. However, lines containing the anemia-type virus require erythropoietin and another agent such as dimethyl sulfoxide for optimal erythrodifferentiation, whereas those containing the polycythemia-type virus do not require or respond to erythropoietin. Mice infected with the original Friend virus isolates were anemic, so sub-lines derived from these mice should be erythropoietin-dependent for induction of erythrodifferentiation. However, many of the widely studied sub-lines are erythropoietin-independent. In order to clarify this apparent anomaly, the genomes of viruses present in two commonly used erythropoietin-independent sub-lines were sequenced. Sequence analysis demonstrates that they contain the polycythemia-type virus and not the anemia-type virus.
机译:Friend白血病病毒复合物由具有复制能力的病毒加上两种不具有复制能力的病毒之一组成,即形成脾脏聚焦病的贫血病毒或形成脾脏聚焦病的红细胞增多症病毒。无复制能力的病毒诱导红系前体细胞快速恶变。来自复合物感染的小鼠的转化细胞系可以在体外被诱导进行红细胞分化。但是,含有贫血型病毒的品系需要促红细胞生成素和另一种试剂(如二甲基亚砜)才能实现最佳的红细胞分化,而含有促红细胞增多症型病毒的品系则不需要或不响应促红细胞生成素。感染原始Friend病毒分离株的小鼠贫血,因此从这些小鼠衍生的亚系应该是促红细胞生成素依赖性的,以诱导红细胞分化。然而,许多被广泛研究的子系是独立于促红细胞生成素的。为了澄清这种明显的异常,对两个常用的促红细胞生成素非依赖性亚系中存在的病毒基因组进行了测序。序列分析表明它们含有红细胞增多症型病毒,而非贫血型病毒。

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