tetano
Editor, Senior Moderator
Bioengineered. 2015 Dec 28:0. [Epub ahead of print]
[h=1]High immunogenicity of plant-produced influenza based on the M2e peptide fused to flagellin.[/h] Mardanova ES[SUP]1[/SUP], Kotlyarov RY[SUP]1[/SUP], Kuprianov VV[SUP]1[/SUP], Stepanova LA[SUP]2[/SUP], Tsybalova LM[SUP]2[/SUP], Lomonossoff GP[SUP]3[/SUP], Ravin NV[SUP]1[/SUP].
[h=3]Author information[/h]
[h=3]Abstract[/h] The ectodomain of the conserved influenza matrix protein M2 (M2e) is a promising target for the development of a universal influenza vaccines. Immunogenicity of M2e could be enhanced by its fusion to bacterial flagellin, the ligand for Toll-like receptor 5. Previously we reported the transient expression in plants of a recombinant protein Flg-4M comprising flagellin fused to four tandem copies of the M2e. The use of self-replicating recombinant vector based on the potato virus X allowed expression of Flg-4M in Nicotiana benthaminana leaves at a very high level, up to about 1 mg/g of fresh leaf tissue. Intranasal immunization of mice with Flg-4M induced M2e-specific serum antibodies and provided protection against lethal challenge with different strains of influenza A virus. Here we show that immunization with Flg-4M not only generates a strong immune response, but also redirects the response from the carrier flagellin towards the M2e epitopes. Significant IgG response to M2e was also developed in bronchoalveolar lavages of immunized mice. Protective activity of Flg-4M upon lethal influenza challenge correlated with a decrease of virus titers in lungs relative to the control. Overall these data show the potential for the development of a plant-produced M2e-flagellin universal influenza vaccine.
[h=4]KEYWORDS:[/h] M2e; M2e peptide; Plant-produced vaccine; Toll-like receptor; ELISA; bronchoalveolar lavage; PBS; enzyme-linked immunosorbent assay; BAL; flagellin; influenza; phosphate buffered saline; potato virus X; TLR; the extracellular domain of matrix protein 2 of influenza A virus; PVX
PMID: 26710263 [PubMed - as supplied by publisher]
[h=1]High immunogenicity of plant-produced influenza based on the M2e peptide fused to flagellin.[/h] Mardanova ES[SUP]1[/SUP], Kotlyarov RY[SUP]1[/SUP], Kuprianov VV[SUP]1[/SUP], Stepanova LA[SUP]2[/SUP], Tsybalova LM[SUP]2[/SUP], Lomonossoff GP[SUP]3[/SUP], Ravin NV[SUP]1[/SUP].
[h=3]Author information[/h]
[h=3]Abstract[/h] The ectodomain of the conserved influenza matrix protein M2 (M2e) is a promising target for the development of a universal influenza vaccines. Immunogenicity of M2e could be enhanced by its fusion to bacterial flagellin, the ligand for Toll-like receptor 5. Previously we reported the transient expression in plants of a recombinant protein Flg-4M comprising flagellin fused to four tandem copies of the M2e. The use of self-replicating recombinant vector based on the potato virus X allowed expression of Flg-4M in Nicotiana benthaminana leaves at a very high level, up to about 1 mg/g of fresh leaf tissue. Intranasal immunization of mice with Flg-4M induced M2e-specific serum antibodies and provided protection against lethal challenge with different strains of influenza A virus. Here we show that immunization with Flg-4M not only generates a strong immune response, but also redirects the response from the carrier flagellin towards the M2e epitopes. Significant IgG response to M2e was also developed in bronchoalveolar lavages of immunized mice. Protective activity of Flg-4M upon lethal influenza challenge correlated with a decrease of virus titers in lungs relative to the control. Overall these data show the potential for the development of a plant-produced M2e-flagellin universal influenza vaccine.
[h=4]KEYWORDS:[/h] M2e; M2e peptide; Plant-produced vaccine; Toll-like receptor; ELISA; bronchoalveolar lavage; PBS; enzyme-linked immunosorbent assay; BAL; flagellin; influenza; phosphate buffered saline; potato virus X; TLR; the extracellular domain of matrix protein 2 of influenza A virus; PVX
PMID: 26710263 [PubMed - as supplied by publisher]