Nature:特殊抗菌蛋白或有望治疗机体炎症

2016-11-03 佚名 生物谷

图片来源:medicalxpress.com 近日,刊登在国际杂志Nature上的一项研究报告中,来自加利福尼亚大学的研究人员通过研究发现,将一种名为小菌素的抗菌蛋白引入到肠道发炎的小鼠机体中或许就能够降低小鼠肠道的发炎程度,同时研究者还发现小菌素或许能够调解肠道中不同类型细菌的关系。 在过去几十年里,科学家们进行了很多研究来理解引发肠道易激综合症的因子,肠道易激综合症包括了克罗恩病和结肠

图片来源:medicalxpress.com

近日,刊登在国际杂志Nature上的一项研究报告中,来自加利福尼亚大学的研究人员通过研究发现,将一种名为小菌素的抗菌蛋白引入到肠道发炎的小鼠机体中或许就能够降低小鼠肠道的发炎程度,同时研究者还发现小菌素或许能够调解肠道中不同类型细菌的关系。

在过去几十年里,科学家们进行了很多研究来理解引发肠道易激综合症的因子,肠道易激综合症包括了克罗恩病和结肠炎等多种类型的疾病,研究者认为,这其中很多疾病的发生都是因为肠道中有害细菌的扩增,以及有益细菌被不断“排挤”所致;为此,本文中研究人员对名为小菌素的蛋白进行了研究,小菌素是益生菌所分泌的特殊蛋白质,其对于抵御有害细菌非常重要,文章中研究者通过研究确定了是否将小菌素引入到患肠道易激综合症的小鼠肠道中就能够产生正向效应。

文章中,研究者促使多个小鼠患上肠道易激综合症,随后将这些小鼠分为几个小组,其中一部分小鼠接受一定剂量的能够产生小菌素的大肠杆菌,另外一部分小鼠接受不能够产生小菌素的大肠杆菌,第三组小鼠则接受一定剂量能够引发腹泻的肠炎沙门菌,第四小组的小鼠则接受在人类克罗恩病中扮演重要角色的大肠杆菌。

结果研究者发现,有益生作用的大肠杆菌能够快速繁殖来抵御消除肠道中有害的细菌,随后导致机体炎症下降;同时研究者还发现,这种有益菌群还能够降低被感染小鼠机体中肠炎沙门菌的水平。

研究者指出,将产小菌素的有益细菌引入到患肠道易激综合症的患者机体中或许有望成为一种新型疗法来帮助降低患者机体炎症,同时还能够克服和抗生素耐药性相关的一些问题;当然后期研究人员还需要更为深入的研究探索才能够进一步开发出新型疗法来治疗诸如肠道易激综合症等疾病。

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