基因变异在KIF7可能有助于额外的牙形成
Phohathai Chainaphaphorn1, Chumpol Ngamphiw2, Sissades Tongsima2
1Center of Excellence in Medical Genetics Research, Chiang Mai University, Chiang Mai, Thailand; Division of Pediatric Dentistry, Department of Orthodontics and Pediatric Dentistry, Faculty of Dentistry, Chiang Mai University, Chiang Mai, Thailand.
International dental journal
|August 7, 2025
概括
基因因素家族成员7 (KIF7) 中的遗传变异可能会导致多余的牙形成. 这项研究确定了与各种牙异常相关的新型KIF7变异,包括额外的牙.
科学领域:
- 遗传学 是一个遗传学.
- 发展生物学 发展生物学
- 口腔生物学 口腔生物学
背景情况:
- 素家族成员7 (KIF7) 对于保持状细胞完整性至关重要.
- 耳介导的声音刺信号影响牙发育,包括数量,位置和形态.
- 这些通路的干扰可能导致牙异常.
研究的目的:
- 调查KIF7基因变异在超数牙病因学中的潜在作用.
- 为了确定与牙异常相关的特定KIF7突变.
主要方法:
- 对来自130个家庭的153个人进行了整体外组测序,这些人呈现出孤立的超数型牙类型.
- 免疫组织化学被用来检查Kif7表达在小鼠胚胎odontogenesis期间.
- 运用计算建模来分析已识别的KIF7变异对蛋白质结构和功能的影响.
主要成果:
- 六种KIF7变异 (4种罕见的错误,1种新鲜的错误,1种插入) 在患者中被确定,这些患者有多余的牙,包括 mesiodens,多余的牙和复合牙.
- 预计KIF7运动域 (p.His54Tyr,p.Val59Met) 的变异会损害素相互作用并破坏状细胞局部化.
- 预计其他变体 (p.Arg851Cys,p.Glu628Lys,p.Glu630_Glu631dup,p.Pro655Arg) 会影响蛋白质结构和电荷平衡.
结论:
- 这项研究提供了第一个证据,将KIF7变异与超数牙表型联系起来.
- 基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因基因
- 需要进一步的研究,以充分阐明KIF7功能障碍导致牙异常的机制.
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