FGFR1变异导致了牙产生家族
Siyue Yao1,2,3, Xi Zhou1,2, Min Gu4
1Department of Orthodontics, The Affiliated Stomatology Hospital of Nanjing Medical University, Nanjing, China.
Human genomics
|October 14, 2023
概括
在FGFR1的遗传突变导致牙生殖,一个常见的牙异常. 这项研究确定了新的变异,并探索了它们的分子机制,涉及牙髓干细胞.
科学领域:
- 遗传学 遗传学 是一个
- 发展生物学 发展生物学
- 干细胞生物学 干细胞生物学
背景情况:
- 牙发育是一种普遍的牙异常,影响功能和美学.
- 识别遗传因素和分子机制对于理解牙产生至关重要.
- 人类牙纸干细胞可能在牙产生病变发生过程中发挥作用.
研究的目的:
- 识别导致各种形式的牙发育的遗传因素.
- 研究涉及人类牙纸干细胞在牙产生过程中的分子机制.
主要方法:
- 整体外体测序和桑格测序被用来识别FGFR1基因中的突变.
- 在使用细胞系 (HEK293,人类牙髓干细胞) 和模型生物 (小鼠,Xenopus laevis) 的确定的FGFR1变体上进行了功能研究.
- 进行了基因表达分析和信号通路调查 (TGF-β).
主要成果:
- 一个罕见的FGFR1突变 (c.103G>A,p.Gly35Arg) 被确定为汉族中华家庭的非综合征性牙发生的原因.
- 另一个具有已知的FGFR1变异 (c.1859G>A,p.Arg620Gln) 的家族呈现了牙发生和家族内变异性.
- 这种c.103G>A变体表现出有害作用,促进了增殖,抑制了细胞灭绝,抑制了上皮细胞-介质酶过渡,降低了ID4的调节,并关闭了TGF-β通路.
结论:
- 这项研究扩大了牙产生已知的突变谱.
- 这些发现增强了对牙产生背后的分子机制的理解,突出了FGFR1和牙髓干细胞的作用.
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