کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10965829 1102760 2013 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Maternal antibody induced by recombinant gp85 protein vaccine adjuvanted with CpG-ODN protects against ALV-J early infection in chickens
موضوعات مرتبط
علوم زیستی و بیوفناوری ایمنی شناسی و میکروب شناسی ایمونولوژی
پیش نمایش صفحه اول مقاله
Maternal antibody induced by recombinant gp85 protein vaccine adjuvanted with CpG-ODN protects against ALV-J early infection in chickens
چکیده انگلیسی
In this study, the efficacy of a recombinant protein vaccine encoding the gp85 gene from the subgroup J avian leukosis virus (ALV-J) co-administered with cytosine-phosphate-guanine oligodeoxynucleotide (CpG-ODN) or Freund's adjuvants was investigated for the protection against early ALV-J infection in chickens. The gp85 gene from ALV-J was amplified using polymerase chain reaction (PCR), and the recombinant protein was expressed in Escherichia coli. The purified recombinant protein was injected intramuscularly into the breeder hens along with CpG-ODN or Freund's adjuvants, and the antibodies in the serum were assayed regularly post inoculation. The fertilized eggs from the vaccinated hens were hatched, the hatched chickens were challenged with 102.2 50% tissue culture infective dose (TCID50) ALV-J on 1 day, and the maternal antibodies in the hatched chickens were examined regularly before and after the challenge. The viremia was determined weekly, and a histopathological analysis of the immunosuppressive lesions was performed. The results suggest that the gp85 recombinant protein was successfully prepared and was inoculated with CpG-ODN adjuvant into breeder hens to induce serological antibody against ALV-J in the hens and in the hatched chickens. The positive maternal antibodies in the hatched chickens provided effective protection for most chickens against viremia and dramatically decreased the number of immunosuppressive lesions; these protective effects were better than those of the gp85 recombinant protein plus Freund's adjuvant. The data will provide a scientific basis for the application of the ALV-J subunit vaccine to control ALV-J infection in chicken flocks.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vaccine - Volume 31, Issue 51, 9 December 2013, Pages 6144-6149
نویسندگان
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