PNAS:蛋白聚集导致AEC综合征

2018-02-12 海北 MedSci原创

已有的研究显示,p63是一个编码表皮命运承诺,发育和分化的主要调节基因。在p63基因的C末端结构域中的杂合突变可以引起紫癜 - 外胚层缺陷 - 唇裂/腭裂(AEC)综合征,这是一种危及生命的疾病。

已有的研究显示,p63是一个编码表皮命运承诺,发育和分化的主要调节基因。在p63基因的C末端结构域中的杂合突变可以引起紫癜 - 外胚层缺陷 - 唇裂/腭裂(AEC)综合征,这是一种危及生命的疾病,其特征在于皮肤脆弱,和严重的,持久的皮肤糜烂。尽管现在研究人员对p63的功能已经有了深入的了解,但对疾病病理机制和可能的治疗机制还知之甚少。

最近,来自法兰克福大学的研究人员发现,多个AEC相关的p63突变,但不是其他疾病致病原因,能够导致热力学蛋白质去稳定,错误折叠和聚集。这和癌症中发现的已知p53功能增益突变体类似。

AEC突变蛋白表现出受损的DNA结合能力和转录活性,由于与野生型p63和p73的聚合,导致显性负面效应。重要的是,p63聚集也发生在条件敲入的疾病小鼠模型中,其中错误折叠的p63突变蛋白导致严重的表皮缺陷。破坏突变蛋白聚集的p63变体能够在报告测定以及人成纤维细胞-角质化细胞转化测定中挽救p63的转录功能。

因此,该研究表明,AEC综合征是一种蛋白质聚集障碍导致的疾病,为治疗性干预开辟了道路。


原始出处:

Claudia Russo et al. Protein aggregation of the p63 transcription factor underlies severe skin fragility in AEC syndromeProceedings of the National Academy of Sciences, 2018; 115 (5): E906 DOI: 10.1073/pnas.1713773115


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    2018-10-06 drwjr
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    2018-02-12 1ddf0692m34(暂无匿称)

    学习了.涨知识

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