Incorporation of GM-CSF or CD40L Enhances the Immunogenicity of Hantaan Virus-Like Particles.

Incorporation of GM-CSF or CD40L Enhances the Immunogenicity of Hantaan Virus-Like Particles.
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掺入 GM-CSF 或 CD40L 增强汉滩病毒样颗粒的免疫原性

DOI:
10.3389/fcimb.2016.00185
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发表时间:
2016
影响因子:
5.7
通讯作者:
Zhang FL
Zhang FL
中科院分区:
医学2区
文献类型:
--
作者:
Cheng LF;Wang F;Zhang L;Yu L;Ye W;Liu ZY;Ying QK;Wu XA;Xu ZK;Zhang FL

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安全有效的汉滩病毒(HTNV)疫苗是非常需要的,因为HTNV引起急性且通常致命的疾病(肾综合征出血热,HFRS)。由于灭活疫苗的免疫力弱,安全性差,HTNV病毒样颗粒(VLP)提供了一个有吸引力的和安全的替代品。这些颗粒缺乏病毒基因组,但被免疫系统视为病毒颗粒。我们假设向VLP添加免疫刺激信号将增强其功效。为了实现这种增强,我们产生了嵌合HTNV VLP含有糖基磷脂酰肌醇(GPI)锚定的粒细胞巨噬细胞集落刺激因子(GM-CSF)或CD 40配体(CD 40 L),并在体外研究其生物活性。与汉坦病毒灭活疫苗和汉坦病毒VLP相比,含GM-CSF或CD 40 L的嵌合汉坦病毒VLP免疫小鼠诱导了更强的体液免疫应答和细胞免疫应答。含有GM-CSF或CD 40 L的嵌合HTNV VLP也保护小鼠免受HTNV攻击。总之,我们的研究结果表明,锚定免疫刺激分子到HTNV VLP可以是一个潜在的方法,用于控制和预防HFRS。
A safe and effective Hantaan virus (HTNV) vaccine is highly desirable because HTNV causes an acute and often fatal disease (hemorrhagic fever with renal syndrome, HFRS). Since the immunity of the inactivated vaccine is weak and the safety is poor, HTNV virus-like particles (VLPs) offer an attractive and safe alternative. These particles lack the viral genome but are perceived by the immune system as virus particles. We hypothesized that adding immunostimulatory signals to VLPs would enhance their efficacy. To accomplish this enhancement, we generated chimeric HTNV VLPs containing glycosylphosphatidylinositol (GPI)-anchored granulocyte macrophage colony-stimulating factor (GM-CSF) or CD40 ligand (CD40L) and investigated their biological activity in vitro. The immunization of mice with chimeric HTNV VLPs containing GM-CSF or CD40L induced stronger humoral immune responses and cellular immune responses compared to the HTNV VLPs and Chinese commercial inactivated hantavirus vaccine. Chimeric HTNV VLPs containing GM-CSF or CD40L also protected mice from an HTNV challenge. Altogether, our results suggest that anchoring immunostimulatory molecules into HTNV VLPs can be a potential approach for the control and prevention of HFRS.
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