JCI Insight:VEGF-A165基因治疗可改善血-迷路屏障破裂和听力损失

2021-03-31 AlexYang MedSci原创

数百万人受到听力损失的影响。如果听力损失是由噪音或衰老引起的,通常与耳蜗及其血管之间的屏障破裂有关。

数百万人受到听力损失的影响。如果听力损失是由噪音或衰老引起的,通常与耳蜗及其血管之间的屏障破裂有关。

成年内耳中的许多小血管中都有周皮细胞,然而,它们在不同类型的听力损失中的作用在很大程度上是未知的

最近,有研究人员使用诱导和条件型的周皮细胞缺失小鼠模型,研究结果表明,周皮细胞的缺失会导致血管结构的明显变化,导致血液循环不良和听力损失。在体外试验中,结果表明,在成人和新生小鼠内耳组织中周皮细胞能够有力促进新的血管生长。在体内,将腺相关病毒血清型1(AAV1)介导的VEGF-A165病毒载体递送到缺失周皮细胞的动物身中能够再生缺失的周皮细胞,改善了血液供应,减少了感觉毛细胞的损失,并减轻了听力损失。

VEGFA165基因治疗可提高周皮细胞存活率,促进周皮细胞再生并减轻血管损伤

最后,研究人员指出,他们的研究提供了第一个明确的证据,证明了周皮细胞对成人听力至关重要,并且可以再生耳蜗血管用AAV1介导的VEGF-A165基因疗法能够恢复受损内耳的血管功能,因此是是改善血管相关听力疾病的新策略,包括常见形式的年龄相关听力损失。

原始出处:

Jinhui Zhang , Zhiqiang Hou , Xiaohan Wang et al. VEGF-A165 gene therapy ameliorates blood-labyrinth barrier breakdown and hearing loss. JCI Insight. Mar 2021

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    2021-04-02 ysjykql
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    2021-03-31 月亮的月

    厉害了

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