小鼠皮肤炎症和瘤易感性的遗传结构
David A Quigley1, Minh D To, Jesús Pérez-Losada
1Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, San Francisco, California 94115, USA.
Nature
|January 13, 2009
概括
遗传变异影响疾病易感性. 这项研究绘制了影响小鼠皮肤癌的遗传变异图,揭示了像Lgr5和Vdr这样的关键调节者参与炎症和组织组织.
科学领域:
- 遗传学 是一个遗传学.
- 皮肤病学 皮肤病学
- 系统生物学 系统生物学
背景情况:
- 众所周知,生殖系多态性影响人类和模型生物的复杂特征疾病,如癌症和炎症.
- 鼠标物种Mus spretus对瘤发育表现出抵抗力,这使得它对癌症易感性的遗传研究具有价值.
- 以前的研究利用了M. spretus和M. musculus之间的交叉来识别导致皮肤癌易感性的遗传变异.
研究的目的:
- 将生殖系多态与来自小鼠皮肤的基因表达数据集成,以创建皮肤基因表达架构的网络视图.
- 识别影响组织组织和与炎症,造血,细胞循环控制和瘤易感性相关的生物功能的表达动机.
- 确定涉及皮肤生物学和疾病易感性的候选主调节剂.
主要方法:
- 交叉繁殖Mus musculus与Mus spretus,以创建一个反向交叉群体.
- 在正常皮肤组织中分析生殖线多态性和基因表达特征.
- 使用网络分析来绘制基因表达架构和识别调控动机.
- 在对瘤发展敏感或耐药的小鼠中比较基因表达模式.
主要成果:
- 综合方法成功生成了小鼠皮肤基因表达架构的网络视图.
- 鉴定了与炎症,表皮屏障功能和增殖相关的表达动机,这些动机在瘤敏感与耐药小鼠中受到差异调节.
- 发现Lgr5 (肠干细胞标记物) 作为毛囊的潜在主调节器.
- 将维生素D受体 (Vdr) 与表皮屏障功能的协调调节,炎症和瘤易感性联系起来.
结论:
- 这项研究提供了基于网络的理解,对皮肤生物学和疾病的遗传影响.
- 确定了关键候选调节剂 (Lgr5,Vdr),在皮肤平衡和癌症易感性方面发挥着重要作用.
- 突出了整合遗传和表达数据的潜力,用于剖析复杂的特征架构.
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