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Cell:一种蛋白可以预防非酒精性脂肪肝

2019-05-28 佚名 生物通

非酒精性脂肪性肝病引起几种不同严重程度的肝功能异常,其特征是肝细胞中脂肪的积累,但不是由高酒精摄入引起的。这种疾病是发达国家最常见的疾病之一,全世界约25%的人口中受到影响。生物医学研究所(IRB Barcelona)的一个研究小组已经确定了一个可以对抗这种疾病的因素,即蛋白质Mitofusin 2。

研究人员发现了一种能预防非酒精性脂肪肝的蛋白质。



非酒精性脂肪性肝病引起几种不同严重程度的肝功能异常,其特征是肝细胞中脂肪的积累,但不是由高酒精摄入引起的。这种疾病是发达国家最常见的疾病之一,全世界约25%的人口中受到影响。生物医学研究所(IRB Barcelona)的一个研究小组已经确定了一个可以对抗这种疾病的因素,即蛋白质Mitofusin 2。

“Mitofusin 2可能是治疗脂肪肝的一个治疗靶点,目前脂肪肝是一种没有治疗方法的疾病。这种疾病的早期诊断是困难的,医生目前只能建议减轻体重以缓解病情,”巴塞罗那IRB复杂代谢疾病和线粒体实验室负责人Antonio Zorzano解释说。

最严重的脂肪酸形式之一是非酒精性脂肪性肝炎(NASH),脂肪积累伴有炎症。发表在《Cell》杂志上的这项研究中,研究人员观察到,即使在疾病的早期,NASH患者的Mitofusin 22水平也有所下降。

和人类一样,小鼠也会在Mitofusin 2水平降低时患上这种疾病。巴塞罗那大学高级教授、CIBERDEM项目研究人员Zorzano领导的研究小组,通过给一个NASH小鼠模型注射一种腺病毒(这种腺病毒编码Mitofusin 2蛋白)观察到了NASH的改善。

“我们现在正在研究不同的方法,这些方法可以使我们在不产生副作用的情况下提高Mitofusin 2的水平,这可能与治疗非酒精性脂肪肝病有关,”巴塞罗那IRB博士后研究员、该研究的第一作者María Isabel Hernández-Alvarez说。

这项工作得到了国家科技部、创新和大学(先前称为MINECO)、加泰罗尼亚政府、Salud Carlos III学院、CIBERDEM、“La Cixa”基金会和Pere Virgili研究所(IISPV)的资助。

原始出处:Hernández-Alvarez MI, Sebastián D, Vives S, et al. Deficient Endoplasmic Reticulum-Mitochondrial Phosphatidylserine Transfer Causes Liver Disease. Cell. 2019 May 2;

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    2019-08-30 维他命
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