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JCI:美研究发现抵御毛霉菌病的抗体

2013-12-26 伊文 EurekAlert中文

毛霉菌病是由被称为毛霉目真菌的特定类型真菌入侵病人的细胞所导致的,这是一种致命的感染,而且会攻击免疫系统被削弱的病人。在毛霉目真菌细胞表面上的一种被称为CotH的新型蛋白质让这种入侵成为了可能。 洛杉矶生医所发现新型蛋白CotH是毛霉目真菌入侵人类细胞因子 来自美国洛杉矶生物医学研究所(LA BioMed)的一个科研团队今天以网络提前出版的形式在《临床研究杂志》(

毛霉菌病是由被称为毛霉目真菌的特定类型真菌入侵病人的细胞所导致的,这是一种致命的感染,而且会攻击免疫系统被削弱的病人。在毛霉目真菌细胞表面上的一种被称为CotH的新型蛋白质让这种入侵成为了可能。

洛杉矶生医所发现新型蛋白CotH是毛霉目真菌入侵人类细胞因子

来自美国洛杉矶生物医学研究所(LA BioMed)的一个科研团队今天以网络提前出版的形式在《临床研究杂志》( Journal of Clinical Investigation)上发表了一项研究,该研究报告了这组研究人员的发现,这一发现可引导毛霉菌病的疫苗和疗法的开发,在这项研究中,研究人员说他们可以阻止毛霉目真菌入侵人类细胞,并且使用阻断CotH蛋白的抗体成功地治疗了疾病模型带有的毛霉菌病。【原文下载】

“目前还没有能遏制高度致命的毛霉菌病感染的疫苗或有效疗法,但是为了保护那些免疫系统被削弱的病人又迫切需要这些治疗策略,”洛杉矶生物医学研究所的主要科研人员、该研究的通讯作者Ashraf S. Ibrahim博士说。“我们的研究为开发预防和治疗高危病人的毛霉菌病的抗体打下了基础。这些发现还可能带来诊断测试这种疾病的方法。”

那些遭受免疫系统削弱、营养不良或酸中毒(高血糖或者糖尿病酮酸中毒)的病人面临更大的感染风险。Ibrahim博士的研究组发现用抗CotH抗体或者CotH靶向RNAi治疗能阻断这种对细胞的入侵并且保护病人不被毛霉菌病感染。在和这项研究同时发表的一篇评论中,美国杜克大学医学中心医学系传染病部门的教授Andrew Alspaug, MD探讨了这些发现如何能够对毛霉菌病疗法的开发做出贡献。

该研究和这篇同期发表的评论文章将发表在1月2日出版的《临床研究杂志》上。该研究受到了如下资助的支持:公共卫生服务资助AI063503 和R21 AI082414-01、美国国立促进转化科学中心通过美国加州大学洛杉矶分校CTSI授予的UL1TR000124号资助;R01 AI054928号资助,以及来自美国卫生与人类服务部国立卫生研究院国立过敏与传染病研究所的HHSN272200900009C号资助。参与这项研究的科研人员包括:Teclegiorgis Gebremariam、Mingfu Liu、Guanpingsheng Luo、Vincent Bruno、Quynh T. Phan、Alan J. Waring、John E. Edwards Jr.、Scott G. Filler 和 Michael R. Yeaman。

关于洛杉矶生物医学研究所

洛杉矶生物医学研究所成立于1952年,是美国主要的非营利性独立生物医学研究机构之一。它拥有大约100名研究组长,进行改善癌症、遗传病、传染病、环境因素导致的疾病以及其他疾病的诊断和治疗的研究。它还教育青年科学家、提供社区服务,其中包括胎儿期咨询和儿童期营养项目。洛杉矶生物医学研究所在学术上属于美国加州大学洛杉矶分校David Geffen医学院,位于加州大学洛杉矶分校港口医疗中心的园区内。

原文出处:

Gebremariam T, Liu M, Luo G, Bruno V, Phan QT, Waring AJ, Edwards JE Jr, Filler SG, Yeaman MR, Ibrahim AS.CotH3 mediates fungal invasion of host cells during mucormycosis.J Clin Invest. 2013 Dec 20. pii: 71349. doi: 10.1172/JCI71349.【原文下载】

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