在人类癌症的转录格局中表达的伪基因
Shanker Kalyana-Sundaram1, Chandan Kumar-Sinha, Sunita Shankar
1Michigan Center for Translational Pathology, University of Michigan, Ann Arbor, MI 48109, USA.
Cell
|June 26, 2012
概括
这项研究揭示了在组织和癌症中广泛的伪基因转录. 这些转录的伪基因显著影响基因调节,细胞分化和癌症进展,为转录组提供了新的见解.
科学领域:
- 基因组学和分子生物学
- 癌症研究 癌症研究
- 基因规则 基因规则
背景情况:
- 伪基因转录可以通过小干扰RNA (siRNA) 或微RNA (miRNA) 结合部位来调节基因表达.
- 由于与父编码基因的高序列相似性,分析伪基因表达具有挑战性,这使得以前的研究仅限于事观察.
研究的目的:
- 系统地分析各种人类组织和癌症类型的伪基因转录.
- 调查表达伪基因的流行率,特异性 (无处不在,血统,癌症或疾病亚型特异性) 和潜在功能.
- 为高通量伪基因表达分析提供全面的转录组资源.
主要方法:
- 利用一个大型RNA测序 (RNA-Seq) 数据集,包括来自13种癌症和正常组织类型的293个样本.
- 进行了系统分析,以识别和表征伪基因转录.
- 探索疾病亚型特异性和选定的表达伪基因的功能作用.
主要成果:
- 观察到惊人的普遍性,伪基因的全基因组表达.
- 将伪基因表达分类为无处不在的,血统特定的和癌症特定的模式.
- 确定了几个表达的伪基因的疾病亚型特异性和潜在功能.
结论:
- 转录的伪基因是细胞转录组的重要和广泛的组成部分.
- 表达的伪基因有望在细胞分化和癌症进展中发挥关键作用,特别是在ceRNA网络中.
- 这项研究为未来的高通量伪基因表达研究提供了宝贵的资源.
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