[Immune response induced by recombinant adenovirus combined with recombinant adeno-associated virus type 1 containing HPV16 L1 gene].
OBJECTIVE
To evaluate the immune potency of recombinant adenovirus combined with rAAV1 vector expressing HPV16L1 protein in mice.


METHODS
The rAdV and rAAV1 vector containing codon-modified HPV16L1 gene was constructed using Admax and AAVmax packaging system respectively. C57 BL/6 mice were immunized with purified rAdV and rAAV1 vector through intramuscular and intranasal inoculation routes, and the titer of neutralizing antibody was determined by neutralization assay based HPV16 pseudovirus.


RESULTS
Intramuscular immunization by rAAV1-mod. HPV16L1 or combined with rAd-mod. HPV16L1 can induce higher titer of neutralizing antibody in serum than that of other groups. The titer of neutralizing antibody of intranasal groups is significantly lower than that of intramuscular group, although the prime-boost strategy using in intranasal group was effective to enhance the specific humoral immunity.


CONCLUSIONS
The rAAV1-mod. HPV16L1 combined with rAd-mod. HPV16L1 can induce higher titer of neutralizing antibody in serum through intramuscular route than that of other groups at the 16th week after the first immunization.
Zhou
Yu-bai
YB
College of Life Science and Bio-engineering, Beijing University of Technology, Beijing 100022, China.
Li
Ze-lin
ZL
Zhou
Ling
L
Sheng
Wang
W
Ma
Hong-tao
HT
Zeng
Yi
Y
D000256:Adenoviridae / Q000235:genetics / Q000276:immunology*; D000257:Adenoviridae Infections / Q000276:immunology*; D000818:Animals; D000914:Antibodies, Viral / Q000276:immunology; D000229:Dependovirus / Q000235:genetics / Q000276:immunology*; D055633:Immune System Phenomena; D007114:Immunization; D051379:Mice; D008810:Mice, Inbred C57BL; D015514:Oncogene Proteins, Fusion / Q000276:immunology*; D009856:Oncogene Proteins, Viral / Q000276:immunology*; D011994:Recombinant Proteins / Q000235:genetics / Q000276:immunology*
D000914:Antibodies, Viral; C424202:HPV16 L1E7 chimeric virus-like particle; D015514:Oncogene Proteins, Fusion; D009856:Oncogene Proteins, Viral; D011994:Recombinant Proteins