FEBS Lett:TOP2B变异能够引起常染色体显性遗传听力损失

2019-07-03 AlexYang MedSci原创

遗传性听力损失是一种临床和遗传异质性疾病。在一个大的具有常染色体显性非综合症听力损失的中国家庭中,研究人员对7名受影响和6名不受影响的家族成员中进行了全外显子组测序。研究人员发现,编码人类拓扑异构酶IIβ TOP2B(c.G4837C:p.D1613H)的基因在该血统中与听力损失共分离,并且还在66名散发性听力损失患者中,发现了TOP2B的另外2个变异。Top2b敲除能够导致斑马鱼内耳明显的缺陷并

遗传性听力损失是一种临床和遗传异质性疾病。在一个大的具有常染色体显性非综合症听力损失的中国家庭中,研究人员对7名受影响和6名不受影响的家族成员中进行了全外显子组测序。

研究人员发现,编码人类拓扑异构酶IIβ TOP2B(c.G4837C:p.D1613H)的基因在该血统中与听力损失共分离,并且还在66名散发性听力损失患者中,发现了TOP2B的另外2个变异。Top2b敲除能够导致斑马鱼内耳明显的缺陷并引起akt下调,从而导致PI3K-Akt信号的去激活。结果是,通过对PI3K-Akt途径的抑制,支持细胞和听毛细胞的数目减少。 因此,研究人员假设TOP2B的变异能够引起常染色体显性非综合征听力损失,机理是通过对PI3K-Akt途径进行抑制来产生的。

最后,研究人员公布了他们的全外显子组测序数据在NCBI上的登录号,分别为SRR9050868, SRR9050867、SRR90508676、SRR90508675、SRR90508674、SRR90508673、SRR90508672、SRR90508671、SRR90508679、SRR90508670、SRR9050859、SRR9050858和SRR9050857。

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    2019-07-05 ysjykql
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