Journal
BIOTECHNOLOGY LETTERS
Volume 28, Issue 13, Pages 959-967Publisher
SPRINGER
DOI: 10.1007/s10529-006-9028-4
Keywords
hepatitis B virus; human immunodeficiency virus; oral plant-based vaccine; transgenic tomato
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A synthetic chimeric gene, TBI-HBS, encoding the immunogenic ENV and GAG epitopes of human immunodeficiency virus (HIV-1) and the surface protein antigen (HBsAg) of hepatitis B virus (HBV), was expressed in tomato plants. Tomato fruits containing the TBI-HBS antigen were fed to experimental mice and, on days 14 and 28 post-feeding, high levels of HIV- and HBV-specific antibodies were present in the serum and feces of the test animals. Intraperitoneal injection of a DNA vaccine directing synthesis of the same TBI-HBsAg antigen boosted the antibody response to HIV in the blood serum; however, it had no effect on the high level of antibodies produced to HBV.
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