Sci Rep:关键蛋白海藻多糖降解酶或能帮助抵御严重的感染性疾病

2017-01-14 佚名 生物谷

图片来源:www.phys.org 一项发表在国际杂志Scientific Reports上的研究报告中,来自梅西大学基础科学研究所的研究人员通过研究鉴别出了一种关键蛋白海藻多糖降解酶(polysaccharide degrading enzyme),该蛋白或能帮助抵御严重的感染性疾病、癌症、HIV以及囊性纤维化。文章中研究者重点对细菌的生物被膜进行研究,生物被膜能够帮助细菌粘附到材

图片来源:www.phys.org

一项发表在国际杂志Scientific Reports上的研究报告中,来自梅西大学基础科学研究所的研究人员通过研究鉴别出了一种关键蛋白海藻多糖降解酶(polysaccharide degrading enzyme),该蛋白或能帮助抵御严重的感染性疾病、癌症、HIV以及囊性纤维化。文章中研究者重点对细菌的生物被膜进行研究,生物被膜能够帮助细菌粘附到材料表面并形成保护层,生物被膜到处都存在,比如牙齿上的斑块,但大多数生物被膜是无害的,有些则是致死性的。

研究者指出,铜绿假单胞菌能够诱发免疫力低下人群出现严重伤口和肺部感染,细菌能够通过吸附到患者的伤口或肺部组织上来发挥作用,同时还会产生致密且具有粘液状的藻酸盐生物被膜,在生物被膜中细菌能够自我包埋并且免于机体免疫系统的识别和杀灭。如今研究人员发现了一种方法来“剥除”掉细菌的这种保护层从而使得细菌就容易被机体免疫系统所杀灭。

研究者Rehm教授说道,细菌遍布于我们的环境中,很多对健康个体都不具有致病性,但有些细菌,比如医院内的很多致病菌都会对多种类型的抗生素产生耐受性。如今研究人员鉴别出了一种特殊蛋白,其能够有效阻断细菌生物被膜吸附到组织上并且诱发感染,同时这种蛋白还能够阻断细菌扩散到机体其它部位并引发感染。

研究者认为,这种新鉴别出的蛋白质能够影响细菌细胞的化学组分,而本文研究对于我们理解细菌藻酸盐以及生物被膜的产生提供了新的线索,也为开发抵御细菌性疾病的新型疗法提供了新的思路;同时本文研究也让科学家们发现了生物被膜新的应用,其能够在某些材料中自然出现,比如海藻,在某些情况下其对于工业和医学上非常重要,同时也广泛用于食品、纺织业以及制药领域,本文研究对于改善医学产品,比如藻酸盐敷料非常重要;后期研究人员还将对生物被膜进行更为深入的研究来制定出更加高效的抵御细菌生物被膜的新型策略。

原始出处:

Wang Y, Moradali MF, Goudarztalejerdi A, Sims IM, Rehm BH. Biological function of a polysaccharide degrading enzyme in the periplasm. Sci Rep. 2016 Nov 8;6:31249. doi: 10.1038/srep31249.

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    2017-01-15 医张生

    外伤材料革命性的新材料。

    0

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    2017-01-15 lovetcm

    这是一个非常关键的发现

    0

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