COL11A2作为脊椎形和先天性脊柱病的候选基因
Denise Rebello1,2, Elizabeth Wohler3, Vida Erfani1,2
1Program in Developmental & Stem Cell Biology, The Hospital for Sick Children, Toronto, Ontario M5G 0A4, Canada.
Human molecular genetics
|July 18, 2023
概括
在COL11A2的遗传变异导致脊椎形 (VMs) 和先天性脊椎病 (CS). 斑马鱼模型表明,COL11A2对于脊椎发育至关重要,患者变异会损害其功能.
科学领域:
- 遗传学 是一个遗传学.
- 发展生物学 发展生物学
- 整形外科 整形外科 整形外科
背景情况:
- 人类脊椎形 (VMs) 影响2000分之一的出生,通常与先天性脊椎病 (CS) 和VACTERL综合征有关.
- 大多数虚拟机的遗传基础在很大程度上是未知的.
- 在患有宫VM和先天性脊柱病的患者中发现了COL11A2变体.
研究的目的:
- 研究COL11A2在脊椎发育中的作用.
- 为了确定已识别的COL11A2变体的功能影响.
主要方法:
- 使用CRISPR/Cas9产生斑马鱼突变体,其中有一种无意义突变 (col11a2L642*) 和基因删除 (col11a2del).
- 斑马鱼模型分析了脊椎融合和矿化缺陷.
- 野生类型和变种COL11A2的转基因表达被用于评估突变表型的救援.
主要成果:
- 斑马鱼col11a2突变体在尾椎中表现出脊椎融合.
- 野生型COL11A2表达在突变斑马鱼中挽救了脊椎融合表型.
- 来自患者的COL11A2误解变体未能挽救功能丧失表型,表明功能受损.
结论:
- COL11A2 在正常的脊椎发育中起着至关重要的作用.
- 鉴定到的 COL11A2 误解变异是致病的,并有助于先天性脊柱病.
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