Loss-of-function variants in SEMA3F and PLXNA3 encoding semaphorin-3F and its receptor plexin-A3 respectively cause idiopathic hypogonadotropic hypogonadism.

Loss-of-function variants in SEMA3F and PLXNA3 encoding semaphorin-3F and its receptor plexin-A3 respectively cause idiopathic hypogonadotropic hypogonadism.
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编码semaphorin-3F及其受体plexin-A3的SEMA 3F和PLXNA 3的功能丧失变体分别引起特发性低促性腺激素性性腺功能减退症。

DOI:
10.1038/s41436-020-01087-5
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发表时间:
2021-06
期刊:
Genetics in medicine : official journal of the American College of Medical Genetics
影响因子:
--
通讯作者:
Topaloglu AK
Topaloglu AK
中科院分区:
其他
文献类型:
--
作者:
Kotan LD;Ternier G;Cakir AD;Emeksiz HC;Turan I;Delpouve G;Kardelen AD;Ozcabi B;Isik E;Mengen E;Cakir EDP;Yuksel A;Agladioglu SY;Dilek SO;Evliyaoglu O;Darendeliler F;Gurbuz F;Akkus G;Yuksel B;Giacobini P;Topaloglu AK

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特发性低促性腺激素性性腺功能减退症(IHH)是一种罕见的遗传性疾病,其特征是由于促性腺激素释放激素(GnRH)缺乏而导致青春期缺失和不育。IHH可伴有正常(嗅觉正常的IHH,nIHH)或嗅觉受损(卡尔曼综合征,KS)。几种semaphorins已被证明是GnRH,嗅觉和犁鼻系统发育的有效调节剂。使用外显子组测序,我们筛选了216名IHH患者,并在15名患者中鉴定了SEMA3F和PLXNA3中的10种超罕见错义变体,相当于我们研究队列的6.9%。基于预测算法和体外功能测定,预测这些变体中的大多数影响SEMA3F分泌或信号传导活性。我们还证实了SEMA 3F及其专性全受体丛蛋白A在人类胎儿中沿沿着GnRH迁移路线的表达。我们报告,SEMA3F信号不足有助于IHH的发病机制。
Idiopathic hypogonadotropic hypogonadism (IHH) is a rare genetic condition characterized by absent puberty and infertility due to gonadotropin-releasing hormone (GnRH) deficiency. IHH can be accompanied by normal (normosmic IHH, nIHH) or compromised olfaction (Kallmann syndrome, KS). Several semaphorins have been shown to be potent modulators of the GnRH, olfactory and vomeronasal system development. Using exome sequencing, we screened 216 IHH patients and identified 10 ultra-rare missense variants in SEMA3F and PLXNA3 in 15 patients, corresponding to 6.9% of our study cohort. Most of these variants are predicted to affect SEMA3F secretion or signaling activity based on predictive algorithms and in vitro functional assays. We also demonstrated the expression of SEMA3F, and of its obligatory holoreceptors, PlexinAs, along the GnRH migratory route in human fetuses. We report that SEMA3F signaling insufficiency contributes to the pathogenesis of IHH.
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