Humoral immune response to HCV core DNA vaccine in mice

DNAvaccine,alsocallednucleicacidvaccine,isarecombinanteukatyoticexpressionplasmidencodingcertainantigenofpathogen.DNAvaccinecanexpressantigenandinducecellularandhumoralimmuneresponsesaftervaccinationbyintramuscularinjectionorplasmid--coatedmicroparticlebombardment.Itshightemperaturestability,lowexpenseofmassproductionandtheabilitytoinducestrongimmuneresponsesevenfortheuseintherapyhavemadeDNAvaccineanexcitingwayfornewvaccinedevelopment'J.InordertofurnishevidenceforHCVDNAvaccinesuitablefo…

Humoral immune response to HCV core DNA vaccine in mice

To investigate the humoral immune response induced by HCV core DNA vaccine in mice and to furnish evidence for HCV DNA vaccine for humans. Methods: HCV core DNA vaccine (pcDNA3. 1HCVcore) was constructed by inserting the full-length cDNA of HCV core gene into an eukaryotic expression vector pcDNA3. 1. Balb/c mice were injected intramuscularly with the recombinant construct and serum anti-HCV core antibody was screened by ELISA. Lysate of NIH3T3 cells trans feeted with pcDNA3. 1 core was analyzed by Western-blot and the anti--HCV core antibody positive murine sera were used as specific antibodies to detect the expression of the vaccine. Results: ELISA detection revealed that 3 out of the 10 vaccinated mice produced HCV antibodies. Western-blot analysis showed that the anti--HCV core antibodies could detect HCV core protein expressed by NIH3T3 cells. Conclusion:HCV core DNA vaccine is able to induce specific antibodies in mice.