新方法推进丙肝疫苗研发

2011-08-04 MedSci原创 MedSci原创

来源:医学论坛网   近日,法国学者Pierre Garrone等开发了一种基于逆转录病毒Gag制成假病毒样颗粒(VLPs)、专门诱导产生中和抗体(NAbs)的疫苗平台。他们称,这种可用大量丙型肝炎病毒(HCV)包膜糖蛋白制成假VLP的平台,代表了病毒性疫苗开发的一种新方法。该研究发表于《科学-转化医学》【Sci Transl Med 3 August 2011 3:94ra71】。   慢性

来源:医学论坛网

  近日,法国学者Pierre Garrone等开发了一种基于逆转录病毒Gag制成假病毒样颗粒(VLPs)、专门诱导产生中和抗体(NAbs)的疫苗平台。他们称,这种可用大量丙型肝炎病毒(HCV)包膜糖蛋白制成假VLP的平台,代表了病毒性疫苗开发的一种新方法。该研究发表于《科学-转化医学》【Sci Transl Med 3 August 2011 3:94ra71】。

  慢性HCV感染,可引发致命并发症,影响着全球2亿人。在一些国家其流行率超过10%,因此急需抗HCV的预防和治疗性疫苗。NAbs是历史最悠久的疫苗成功预防疾病的基础。然而,对于可造成慢性感染的病毒,如人类免疫缺陷病毒(HIV)和HCV,要使重组疫苗诱导产生大量的NAbs仍难以实现。

  研究者报告称,在老鼠和猕猴中用HCV包膜E2和(或)E1糖蛋白制成的假VLPs均能诱导产生高滴度的抗E2和(或)E1抗体,以及NAbs。NAbs被认为具有抗HCV 1a活性,并可中和另5种基因型(1b,2a,2b,4和5)。

  美国圣路易斯大学分子微生物学与免疫学Ranjit Ray对该研究发表观点,他称:“若从使用重组HCV E1/E2纯化蛋白作为亚单位疫苗的早期临床试验以及VLP策略的额外发现考虑,这些结果或许能帮助研究人员研发出诱导中和抗体反应的新型HCV疫苗。

相关链接: 

  1. A Prime-Boost Strategy Using Virus-Like Particles Pseudotyped for HCV Proteins Triggers Broadly Neutralizing Antibodies in Macaques 

  2.  Progress Toward Development of a Hepatitis C Vaccine with Broad Shoulders


 

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    2011-08-06 lqvr

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