手足口病(hand,foot and mouth disease,HFMD)是由肠道病毒引起的传染病,柯萨奇病毒A16型(Coxsackievirus type A 16,CA16)和肠道病毒71型(enterovirus 71,EV71)是引发HFMD流行和暴发的主要病原菌。HFMD在5岁以下的儿童中可引起口腔疼...手足口病(hand,foot and mouth disease,HFMD)是由肠道病毒引起的传染病,柯萨奇病毒A16型(Coxsackievirus type A 16,CA16)和肠道病毒71型(enterovirus 71,EV71)是引发HFMD流行和暴发的主要病原菌。HFMD在5岁以下的儿童中可引起口腔疼痛、厌食、低热及手、脚和口腔溃疡,大部分儿童约1周痊愈,少数儿童可出现心肌炎、肺水肿、无菌脑膜炎等并发症,甚至导致死亡。疫苗接种是预防HFMD的主要途径,目前,EV71灭活疫苗已上市,但CA16疫苗研究进展仍较缓慢。因此,本文对CA16的全病毒灭活疫苗、减毒活疫苗、亚单位疫苗、DNA疫苗、类病毒颗粒(virus-like particle,VLP)疫苗的研究进展作一综述。展开更多
Coxsackievirus A16(CA16) is one of the major causes of hand, foot, and mouth disease(HFMD) worldwide, which is a common illness that affects children. The frequent occurrence of HFMD outbreaks has become a serious pub...Coxsackievirus A16(CA16) is one of the major causes of hand, foot, and mouth disease(HFMD) worldwide, which is a common illness that affects children. The frequent occurrence of HFMD outbreaks has become a serious public health problem in Asia. Therefore, it is important to understand the pathogenesis and replication of CA16. In this study, a stable infectious c DNA clone of an epidemic strain of Coxsackievirus A16(CA16) was assembled, and subsequently a reporter virus(e GFP-CA16) was constructed by inserting the e GFP gene between the 5'-UTR and the N-terminus of VP4, with the addition of a 2A protease cleavage site(ITTLG) at its C-terminus. This was transfected into Vero cells to generate infectious recombinant viruses. The growth characteristics and plaque morphology, in vitro, in mammalian cells were found to be indistinguishable between the parental and recombinant viruses. Although the e GFP-CA16 showed smaller plaque size as compared to recombinant CA16, both were found to exhibit similar growth trends and EC50 of NITD008. In summary, this stable infectious c DNA clone should provide a valuable experimental system to study CA16 infection and host response. The e GFP-CA16 is expected to provide a powerful tool to monitor e GFP expression in infected cells and to evaluate the antiviral activity of potential antiviral agents in the treatment of CA16 infections.展开更多
文摘手足口病(hand,foot and mouth disease,HFMD)是由肠道病毒引起的传染病,柯萨奇病毒A16型(Coxsackievirus type A 16,CA16)和肠道病毒71型(enterovirus 71,EV71)是引发HFMD流行和暴发的主要病原菌。HFMD在5岁以下的儿童中可引起口腔疼痛、厌食、低热及手、脚和口腔溃疡,大部分儿童约1周痊愈,少数儿童可出现心肌炎、肺水肿、无菌脑膜炎等并发症,甚至导致死亡。疫苗接种是预防HFMD的主要途径,目前,EV71灭活疫苗已上市,但CA16疫苗研究进展仍较缓慢。因此,本文对CA16的全病毒灭活疫苗、减毒活疫苗、亚单位疫苗、DNA疫苗、类病毒颗粒(virus-like particle,VLP)疫苗的研究进展作一综述。
基金supported by the Science and Technology Plan Projects of Wuhan (grant No. 2013060501010157)
文摘Coxsackievirus A16(CA16) is one of the major causes of hand, foot, and mouth disease(HFMD) worldwide, which is a common illness that affects children. The frequent occurrence of HFMD outbreaks has become a serious public health problem in Asia. Therefore, it is important to understand the pathogenesis and replication of CA16. In this study, a stable infectious c DNA clone of an epidemic strain of Coxsackievirus A16(CA16) was assembled, and subsequently a reporter virus(e GFP-CA16) was constructed by inserting the e GFP gene between the 5'-UTR and the N-terminus of VP4, with the addition of a 2A protease cleavage site(ITTLG) at its C-terminus. This was transfected into Vero cells to generate infectious recombinant viruses. The growth characteristics and plaque morphology, in vitro, in mammalian cells were found to be indistinguishable between the parental and recombinant viruses. Although the e GFP-CA16 showed smaller plaque size as compared to recombinant CA16, both were found to exhibit similar growth trends and EC50 of NITD008. In summary, this stable infectious c DNA clone should provide a valuable experimental system to study CA16 infection and host response. The e GFP-CA16 is expected to provide a powerful tool to monitor e GFP expression in infected cells and to evaluate the antiviral activity of potential antiviral agents in the treatment of CA16 infections.