tetano
Editor, Senior Moderator
BMC Biotechnol. 2017 Jan 7;17(1):2. doi: 10.1186/s12896-016-0321-6.
[h=1]Multi-antigen avian influenza a (H7N9) virus-like particles: particulate characterizations and immunogenicity evaluation in murine and avian models.[/h] Hu CJ[SUP]1,[/SUP][SUP]2[/SUP], Chien CY[SUP]3[/SUP], Liu MT[SUP]4[/SUP], Fang ZS[SUP]1,[/SUP][SUP]3[/SUP], Chang SY[SUP]5[/SUP], Juang RH[SUP]6[/SUP], Chang SC[SUP]6[/SUP], Chen HW[SUP]7,[/SUP][SUP]8[/SUP].
[h=3]Author information[/h]
[h=3]Abstract[/h] [h=4]BACKGROUND:[/h] Human infection with avian influenza A virus (H7N9) was first reported in China in March 2013. Since then, hundreds of cases have been confirmed showing severe symptoms with a high mortality rate. The virus was transmitted from avian species to humans and has spread to many neighboring areas, raising serious concerns over its pandemic potential. Towards containing the disease, the goal of this study is to prepare a virus-like particle (VLP) that consists of hemagglutinin (HA), neuraminidase (NA) and matrix protein 1 (M1) derived from the human isolate A/Taiwan/S02076/2013(H7N9) for potential vaccine development.
[h=4]RESULTS:[/h] Full length HA, NA, and M1 protein genes were cloned and expressed using a baculoviral expression system, and the VLPs were generated by co-infecting insect cells with three respective recombinant baculoviruses. Nanoparticle tracking analysis and transmission electron microscopy were applied to verify the VLPs' structure and antigenicity, and the multiplicity of infection of the recombinant baculoviruses was adjusted to achieve the highest hemagglutination activity. In animal experiments, BALB/c mice and specific-pathogen-free chickens receiving the VLP immunization showed elevated hemagglutination inhibition serum titer and antibodies against NA and M1 proteins. In addition, examination of cellular immunity showed the VLP-immunized mice and chickens exhibited an increased splenic antigen-specific cytokines production.
[h=4]CONCLUSIONS:[/h] The H7N9 VLPs possess desirable immunogenicity in vivo and may serve as a candidate for vaccine development against avian influenza A (H7N9) infection.
[h=4]KEYWORDS:[/h] Avian influenza virus A (H7N9); Vaccine; Virus-like particles
PMID: 28061848 DOI: 10.1186/s12896-016-0321-6
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[h=1]Multi-antigen avian influenza a (H7N9) virus-like particles: particulate characterizations and immunogenicity evaluation in murine and avian models.[/h] Hu CJ[SUP]1,[/SUP][SUP]2[/SUP], Chien CY[SUP]3[/SUP], Liu MT[SUP]4[/SUP], Fang ZS[SUP]1,[/SUP][SUP]3[/SUP], Chang SY[SUP]5[/SUP], Juang RH[SUP]6[/SUP], Chang SC[SUP]6[/SUP], Chen HW[SUP]7,[/SUP][SUP]8[/SUP].
[h=3]Author information[/h]
[h=3]Abstract[/h] [h=4]BACKGROUND:[/h] Human infection with avian influenza A virus (H7N9) was first reported in China in March 2013. Since then, hundreds of cases have been confirmed showing severe symptoms with a high mortality rate. The virus was transmitted from avian species to humans and has spread to many neighboring areas, raising serious concerns over its pandemic potential. Towards containing the disease, the goal of this study is to prepare a virus-like particle (VLP) that consists of hemagglutinin (HA), neuraminidase (NA) and matrix protein 1 (M1) derived from the human isolate A/Taiwan/S02076/2013(H7N9) for potential vaccine development.
[h=4]RESULTS:[/h] Full length HA, NA, and M1 protein genes were cloned and expressed using a baculoviral expression system, and the VLPs were generated by co-infecting insect cells with three respective recombinant baculoviruses. Nanoparticle tracking analysis and transmission electron microscopy were applied to verify the VLPs' structure and antigenicity, and the multiplicity of infection of the recombinant baculoviruses was adjusted to achieve the highest hemagglutination activity. In animal experiments, BALB/c mice and specific-pathogen-free chickens receiving the VLP immunization showed elevated hemagglutination inhibition serum titer and antibodies against NA and M1 proteins. In addition, examination of cellular immunity showed the VLP-immunized mice and chickens exhibited an increased splenic antigen-specific cytokines production.
[h=4]CONCLUSIONS:[/h] The H7N9 VLPs possess desirable immunogenicity in vivo and may serve as a candidate for vaccine development against avian influenza A (H7N9) infection.
[h=4]KEYWORDS:[/h] Avian influenza virus A (H7N9); Vaccine; Virus-like particles
PMID: 28061848 DOI: 10.1186/s12896-016-0321-6
[PubMed - in process] Free full text