破坏ERF与激活ERK1/2相互作用的异合变体会导致小头症,发育迟缓和骨异常
Lucia Micale1, Aikaterini Vourlia2,3, Carmela Fusco4
1Division of Medical Genetics, Fondazione IRCCS-Casa Sollievo della Sofferenza, Viale Cappuccini snc, 71013, San Giovanni Rotondo, Italy. l.micale@operapadrepio.it.
新的研究确定了ETS2抑制因子 (ERF) 基因的突变,特别影响FSF动机,导致MIDES综合征. 这种情况涉及小头症,发育迟缓和骨异常,原因是ERF-ERK相互作用受损.
科学领域:
- 遗传学和分子生物学
- 发展生物学 发展生物学
- 人类疾病的发病因子人类疾病的发病因子
背景情况:
- 在ETS2抑制因子 (ERF) 基因的突变与骨突症和Chitayat综合征有关.
- 在ERF内部的FSF动机对于其与细胞外信号调节激酶 (ERKs) 的相互作用至关重要.
研究的目的:
- 在患有小头症和先天异常的患者中研究新型ERF de novo in-frame indel (c.911_913del) 的作用.
- 描述影响FSF动机的ERF变异的基础分子机制及其对人类疾病的贡献.
主要方法:
- 异构体和全转录组测序被用来识别遗传变异.
- 进行了蛋白质亲和度映射,共免疫沉和亚细胞局部化研究.
- 功能性测试评估了变体对ERF-ERK相互作用和ERF活动的影响.
主要成果:
- 在一个患有小头症,关节位移和皮埃尔-罗宾序列的患者身上发现了一个新的ERFindel (c.911_913del).
- 另外三名患有发育迟缓,小头症,皮埃尔-罗宾序列和骨异常的患者携带了FSF动机中的de novo ERF变体.
- ERF变体会损害ERF与激活ERK1/2的相互作用,增加核定位,并影响抑制器活性.
结论:
- 该研究扩大了ERF相关疾病的表型谱,包括MIDES综合征,其特点是小头症,发育迟缓和骨异常.
- 破坏ERF-ERK相互作用与MIDES综合征的发病有关,并强调其在人类发育中的重要性.
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