脑下垂体形的淘汰赛小鼠有助于识别人类下垂体形的病例
Julian Martinez-Mayer1, Michelle L Brinkmeier2, Sean P O'Connell3
1Institute of Biosciences, Biotechnology and Translational Biology (iB3), University of Buenos Aires, Intendente Güiraldes 2160, Ciudad Universitaria, C1428EGA, Buenos Aires, Argentina.
Genome medicine
|June 1, 2024
概括
鼠标淘汰赛模型发现了与先天性下垂体病 (CH) 相关的新基因,这是一种罕见的发育障碍. 这项研究有助于诊断CH和理解垂体发育,为受影响的儿童提供希望.
科学领域:
- 遗传学 遗传学 是一个
- 发展生物学 发展生物学
- 内分泌学 在内分泌学.
背景情况:
- 先天性下垂体病 (CH) 和相关的中线缺陷,如阴道视力发育不良 (SOD) 和全脑发育不良 (HPE),导致严重的健康问题.
- 67个基因中的遗传变异与CH有关,但大多数病例仍未被诊断出来.
- 整体外体/基因组测序识别出已知的CH基因和新候选基因,但许多意义不明的变异 (VUS) 复杂了诊断.
研究的目的:
- 通过选小鼠淘汰赛模型来识别先天性下垂体病 (CH) 的新型候选基因.
- 探索参与 pituitary 器官生成的新分子途径.
主要方法:
- 利用了来自发育障碍解密机制 (DMDD) 项目的胚胎成像数据.
- 从国际老鼠表型化联盟 (IMPC) 选了209个胚胎致命和次活性的淘汰赛老鼠线,以检测下垂体形.
主要成果:
- 鉴定出51个具有胚胎垂体形的淘汰性小鼠系,突出显示51个新的CH候选基因.
- 发现了涉及 pituitary 发育的新型分子通路.
- 在两个无关的CH患者病例中确定了MORC2和SETD5基因的变异.
结论:
- 来自淘汰赛项目的衰退性致命小鼠突变物是识别CH候选基因的宝贵资源.
- 这种方法验证了IMPC表型数据用于发现人类发育障碍背后的基因的使用.
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