کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
3428195 1594357 2015 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
H5N1 influenza virus-like particle vaccine protects mice from heterologous virus challenge better than whole inactivated virus
موضوعات مرتبط
علوم زیستی و بیوفناوری ایمنی شناسی و میکروب شناسی ویروس شناسی
پیش نمایش صفحه اول مقاله
H5N1 influenza virus-like particle vaccine protects mice from heterologous virus challenge better than whole inactivated virus
چکیده انگلیسی


• We generated a H5N1 influenza virus-like particle vaccine based on clade 2.3.2.1.
• Mice vaccinated with VLP induced stronger humoral and cellular responses than WIV.
• VLP + CFA showed 100% protection against clade 2.3.2.1, 2.3.4, H5N8 virus challenge.
• H5N1 VLP provided cross-clade protection for the control of H5N1 HPAI infections.

The highly pathogenic avian influenza (HPAI) H5N1 virus has become highly enzootic since 2003 and has dynamically evolved to undergo substantial evolution. Clades 2.3.2.1 and 2.3.4 have become the most dominant lineage in recent years, and H5N8 avian influenza outbreaks have been reported Asia. The current approach to generate influenza virus vaccines uses embryonated chicken eggs for large-scale production, although such vaccines have been poorly immunogenic to heterologous virus challenge. In the current study, virus-like particles (VLP) based on A/meerkat/Shanghai/SH-1/2012 (clade 2.3.2.1) and comprising hemagglutinin (HA), neuraminidase (NA), and matrix (M1) were produced using a baculovirus expression system to develop effective protection for different H5 HPAI clade challenges. Mice immunized with VLP demonstrated stronger humoral and cellular immune responses than mice immunized with whole influenza virus (WIV), with 20-fold higher IgG antibody titers against A/meerkat/Shanghai/SH-1/2012 after boost. Notably, the WIV vaccine group showed partial protection (80% survival) to homologous challenge, little protection (40% survival) to heterologous challenge, and 20% survival to H5N8 challenge, whereas all mice in the VLP + CFA group survived. These results provide insight for the development of effective prophylactic vaccines based on VLPs with cross-clade protection for the control of current H5 HPAI outbreaks in humans.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Virus Research - Volume 200, 16 March 2015, Pages 9–18
نویسندگان
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