斯皮-1 是病毒诱导的小鼠红血球白血病中的假定瘤基因
F Moreau-Gachelin1, A Tavitian, P Tambourin
1INSERM U-248, Faculté de Médecine Lariboisière-Saint Louis, Paris, France.
Nature
|January 21, 1988
概括
复原病毒插入性突变发生可以激活瘤基因. 研究人员发现了一种新的瘤基因Spi-1,它在由脏聚焦形成病毒 (SFFV) 诱导的小鼠红血球白血病中经常被重新排列,这表明它在这种癌症中的作用.
科学领域:
- 分子生物学分子生物学
- 在瘤学瘤学.
- 病毒学 病毒学
背景情况:
- 逆转录病毒插入性突变发生是一种已知的动物模型瘤基因激活机制.
- 染色体重组激活了人类癌症中的原基因,类似于逆转录病毒整合效应.
- 鸟类白血病病毒和小鼠白血病病毒研究发现了在白血病发生过程中激活的保存基因.
研究的目的:
- 描述一种涉及小鼠红血球白血病的新型假定瘤基因.
- 研究脏聚焦形成病毒 (SFFV) 集成在瘤基因激活中的作用.
- 为了确定与SFFV诱导的红状腺瘤相关的特定基因组变化.
主要方法:
- 来自SFFV诱导的小鼠红血球白血病的一个新型基因的分离和表征.
- 在已识别的基因组位点内分析逆转录病毒集成部位.
- 使用分子技术检测瘤样本中的信使RNA转录.
主要成果:
- 发现了一种新的假定瘤基因Spi-1 (SFFV前病毒集成).
- 在95%的研究红状腺瘤中发现了SFFV整合诱导的重组.
- 在重新排列的瘤中检测到4.0千基的信使RNA转录;在其他瘤类型中没有Spi-1重排列.
结论:
- 斯皮-1是SFFV诱导的小鼠红血球白血病中经常重新排列的位点,表明其作为潜在的瘤基因的作用.
- 这种Spi-1重组的高频率表明了红状腺细胞内瘤发生的特定机制.
- 对Spi-1的功能进行进一步的研究可能会阐明红细胞白血病发生的途径.
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