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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Front+Immunol
2016 ; 7
(ä): 321
Nephropedia Template TP
gab.com Text
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English Wikipedia
DNA Vaccines Encoding Antigen Targeted to MHC Class II Induce Influenza-Specific
CD8(+) T Cell Responses, Enabling Faster Resolution of Influenza Disease
#MMPMID27602032
Lambert L
; Kinnear E
; McDonald JU
; Grodeland G
; Bogen B
; Stubsrud E
; Lindeberg MM
; Fredriksen AB
; Tregoning JS
Front Immunol
2016[]; 7
(ä): 321
PMID27602032
show ga
Current influenza vaccines are effective but imperfect, failing to cover against
emerging strains of virus and requiring seasonal administration to protect
against new strains. A key step to improving influenza vaccines is to improve our
understanding of vaccine-induced protection. While it is clear that antibodies
play a protective role, vaccine-induced CD8(+) T cells can improve protection. To
further explore the role of CD8(+) T cells, we used a DNA vaccine that encodes
antigen dimerized to an immune cell targeting module. Immunizing CB6F1 mice with
the DNA vaccine in a heterologous prime-boost regime with the seasonal protein
vaccine improved the resolution of influenza disease compared with protein alone.
This improved disease resolution was dependent on CD8(+) T cells. However, DNA
vaccine regimes that induced CD8(+) T cells alone were not protective and did not
boost the protection provided by protein. The MHC-targeting module used was an
anti-I-E(d) single chain antibody specific to the BALB/c strain of mice. To test
the role of MHC targeting, we compared the response between BALB/c, C57BL/6 mice,
and an F1 cross of the two strains (CB6F1). BALB/c mice were protected, C57BL/6
were not, and the F1 had an intermediate phenotype; showing that the targeting of
antigen is important in the response. Based on these findings, and in agreement
with other studies using different vaccines, we conclude that, in addition to
antibody, inducing a protective CD8 response is important in future influenza
vaccines.