BMC Gastroenterology:小肠中gankyrin缺乏与结肠炎加重相关

2020-02-16 不详 MedSci原创

Gankyrin(GK)是一种调节炎症反应的癌蛋白,其抑制作用被认为是炎症性肠病(IBD)的一种可能的抗炎疗法。本项研究旨在探究其中的作用。

背景
Gankyrin(GK)是一种调节炎症反应的癌蛋白,其抑制作用被认为是炎症性肠病(IBD)的一种可能的抗炎疗法。本项研究旨在探究其中的作用。

方法
在这项研究中,研究人员使用(i)整个小肠和结肠和(ii)远端小肠中具有肠上皮细胞特异性GK缺失的小鼠,研究了GK在上皮细胞中的作用。

结果
出乎意料的是,当右旋糖酐硫酸钠诱发结肠炎时,与对照小鼠相比,小肠上部的GK缺乏会增强炎症活性。生化分析表明,GK缺乏症导致上部小肠中抗菌肽α-防御素5的表达降低。对人体样本的检查进一步证实,小肠中GK表达的降低与结肠克隆氏症有关。通过对细菌16S rRNA基因扩增子进行测序,发现对肠道稳态可能有害的细菌(如日本Helicobacter japonicum和Bilophila)在结肠炎诱发的Gankyrin过量表达。

结论
这些结果突出了GK促炎和抗炎功能的独特部位依赖性,并为IBD的发病机理提供了重要依据。

原始出处:

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    2020-03-21 许安
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