PMID- 16042883 OWN - NLM STAT- MEDLINE DCOM- 20070907 LR - 20050726 IS - 1007-3418 (Print) IS - 1007-3418 (Linking) VI - 13 IP - 7 DP - 2005 Jul TI - [Immune response enhanced by genes encoding IFN-alpha 8 and T alpha 1 co-inoculated with HBV DNA vaccine]. PG - 497-500 AB - OBJECTIVES: To evaluate if the humoral immune response of hepatitis B DNA vaccine pVAX1-S2S could be enhanced by Talpha1 and/or IFNa expression plasmid co-inoculated. METHODS: The following mammalian expression recombinant plasmids were constructed: the plasmid pVAX1-S2S expressing hepatitis B surface antigen S2S, the plasmid pVAX1-T/I co-expressing thymosin a and IFNalpha, the plasmid pVAX1-I/S2S co-expressing IFNalpha and S2S. These plasmids were inoculated intramuscularly into several BALB/c mice groups in different combinations. In the co-immunization group 1 (pVAX1-I/S2S), each mouse was inoculated with 100 microg of pVAX1-I/S2S; in the co-immunization group 2 (pVAX1-S2S) each mouse was co-inoculated with pVAX1-S2S and 50 microg of pVAX1-TI; in the control group each mouse was inoculated with 100 microg of pVAX1-S2S. All the immunizations were boosted at 2 and 4 week intervals; then the serum samples were collected to detect the anti-HBs and anti-preS2 strengths. RESULTS: 3, 5 and 8 weeks after the first inoculation, the positive rates of anti-HBs were 12.5%, 12.5%, 62.5% respectively in the co-immunization group 1 and 25%, 50%, 50% in the co-immunization group 2, while those in the control group were 0, 25%, 37.5%. The titers of anti-preS2 in co-immunization group 2 was 5 times higher than those in the other two groups. CONCLUSION: The data shows that Talpha1 and/or IFNalpha expression plasmid co-inoculated with pVAX1-S2S might act as an adjuvant to enhance the humoral immune response induced by pVAX1-S2S. FAU - Zhou, Tao-you AU - Zhou TY AD - Department of Infectious Disease Center, State Key Laboratory of Biotherapy, West China Hospital of Sichuan University, Chengdu 610041, China. FAU - Zhao, Lian-san AU - Zhao LS FAU - Chen, Min AU - Chen M FAU - Chen, Shou-chun AU - Chen SC FAU - Wang, Song AU - Wang S FAU - Liu, Li AU - Liu L FAU - Tang, Hong AU - Tang H LA - chi PT - English Abstract PT - Journal Article PT - Research Support, Non-U.S. Gov't PL - China TA - Zhonghua Gan Zang Bing Za Zhi JT - Zhonghua gan zang bing za zhi = Zhonghua ganzangbing zazhi = Chinese journal of hepatology JID - 9710009 RN - 0 (Adjuvants, Immunologic) RN - 0 (Hepatitis B Vaccines) RN - 0 (Interferon-alpha) RN - 0 (Recombinant Fusion Proteins) RN - 0 (Vaccines, DNA) RN - 61512-21-8 (Thymosin) SB - IM MH - Adjuvants, Immunologic/genetics/*therapeutic use MH - Animals MH - Female MH - Hepatitis B/immunology/therapy MH - Hepatitis B Vaccines/*immunology/therapeutic use MH - Interferon-alpha/*genetics/immunology MH - Mice MH - Mice, Inbred BALB C MH - Recombinant Fusion Proteins/immunology MH - Thymosin/*genetics/immunology MH - Vaccines, DNA/*immunology EDAT- 2005/07/27 09:00 MHDA- 2007/09/08 09:00 CRDT- 2005/07/27 09:00 PHST- 2005/07/27 09:00 [pubmed] PHST- 2007/09/08 09:00 [medline] PHST- 2005/07/27 09:00 [entrez] PST - ppublish SO - Zhonghua Gan Zang Bing Za Zhi. 2005 Jul;13(7):497-500.