5.3　Gene Engineering Vaccine

Genetically engineered vaccines clone gene fragments encoding certain antigens into eukaryotic expression plasmids and directly inject them into the body.By using the translation system of host cells to express corresponding antigens, the body can be induced to produce specific humoral and cellular immune responses.Gene engineering vaccines induce the body’s immune response is associated with many factors, such as plasmid immune way, within the cells the expression level of target antigen, intake of the target antigen and presented, and the release of cytokines and lymphatic factor, stimulate the molecular and cellular adhesive molecular, so from the above several aspects to enhance gene vaccines induce antitumor immune effect.(https://www.daowen.com)