tetano
Editor, Senior Moderator
Vaccine. 2011 Nov 16. [Epub ahead of print]
A novel combined adjuvant for nasal delivery elicits mucosal immunity to influenza in aging.
Asanuma H, Zamri NB, Sekine SI, Fukuyama Y, Tokuhara D, Gilbert RS, Fukuiwa T, Sata T, Tashiro M, Fujihashi K.
Source
Influenza Virus Research Center, National Institute of Infectious Diseases, Musashimurayama-shi, Tokyo, Japan; Department of Pediatric Dentistry, The Immunobiology Vaccine Center, The University of Alabama at Birmingham, Birmingham, AL 35294-0007, USA.
Abstract
Since a combination of flt3 ligand plasmid (pFL) and CpG-oligodeoxynucleotides (ODN)(3) as a dendritic cell (DC)-targeting double mucosal adjuvant elicited ovalbumin-specific secretory IgA (S-IgA) antibody (Ab) responses, we examined whether this double adjuvant could induce influenza-specific protective immunity in aged mice. A double adjuvant plus A/Puerto Rico/8/34 (PR8)-hemagglutinin (HA) induced increased numbers of CD11b(+) CD11c(+) DCs and both CD4(+) Th1- and Th2-type responses in the nasopharyngeal-associated lymphoreticular tissue, nasal passages and cervical lymph nodes. Further, increased levels of PR8-HA-specific S-IgA Ab responses were detected in the upper respiratory tact (URT) of aged and young adult mice given nasal PR8-HA with this double adjuvant. Thus, when mice were challenged with PR8 virus via the nasal route, both aged and young adult mice given nasal vaccine exhibited complete protection. Further, IgA-deficient mice nasally immunized with a double adjuvant influenza vaccine failed to provide protection against PR8 challenge. These results indicate that a nasal double adjuvant successfully induces PR8-HA-specific IgA Ab responses in both young adult and aged mice, which are essential for the prevention of influenza infection in the murine URT.
Copyright ? 2011 Elsevier Ltd. All rights reserved.
PMID:
22100889
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/22100889
A novel combined adjuvant for nasal delivery elicits mucosal immunity to influenza in aging.
Asanuma H, Zamri NB, Sekine SI, Fukuyama Y, Tokuhara D, Gilbert RS, Fukuiwa T, Sata T, Tashiro M, Fujihashi K.
Source
Influenza Virus Research Center, National Institute of Infectious Diseases, Musashimurayama-shi, Tokyo, Japan; Department of Pediatric Dentistry, The Immunobiology Vaccine Center, The University of Alabama at Birmingham, Birmingham, AL 35294-0007, USA.
Abstract
Since a combination of flt3 ligand plasmid (pFL) and CpG-oligodeoxynucleotides (ODN)(3) as a dendritic cell (DC)-targeting double mucosal adjuvant elicited ovalbumin-specific secretory IgA (S-IgA) antibody (Ab) responses, we examined whether this double adjuvant could induce influenza-specific protective immunity in aged mice. A double adjuvant plus A/Puerto Rico/8/34 (PR8)-hemagglutinin (HA) induced increased numbers of CD11b(+) CD11c(+) DCs and both CD4(+) Th1- and Th2-type responses in the nasopharyngeal-associated lymphoreticular tissue, nasal passages and cervical lymph nodes. Further, increased levels of PR8-HA-specific S-IgA Ab responses were detected in the upper respiratory tact (URT) of aged and young adult mice given nasal PR8-HA with this double adjuvant. Thus, when mice were challenged with PR8 virus via the nasal route, both aged and young adult mice given nasal vaccine exhibited complete protection. Further, IgA-deficient mice nasally immunized with a double adjuvant influenza vaccine failed to provide protection against PR8 challenge. These results indicate that a nasal double adjuvant successfully induces PR8-HA-specific IgA Ab responses in both young adult and aged mice, which are essential for the prevention of influenza infection in the murine URT.
Copyright ? 2011 Elsevier Ltd. All rights reserved.
PMID:
22100889
[PubMed - as supplied by publisher]
http://www.ncbi.nlm.nih.gov/pubmed/22100889