Awale MM, Mody SK, Dudhatra GB, Avinash Kumar, Patel HB, Modi CM, Kamani DR and Chauhan BN
Transgenic plant vaccines are genetically engineered plant vaccines in which a selected gene is encoded for the desired antigen and modified which when taken orally elicits a strong immune response in the body. Plant-cellproduced vaccines are inherently safe because they pose no risk of microbiologic contamination associated with animal-derived vaccines and eliminate the risk of pathogenicity, reversion to virulence and shedding. Oral delivery stimulates mucosal immunity (the first line of defense) in the tissues lining the respiratory system and eliminates injection-related hazards. Plants structure may help in maintaining the antigenic property even after degradation in intestine. Plenty of availability of plants makes the vaccine production of low cost apart from low cost in storage and transportation. They act through different mechanism of action mainly stimulating the lymphoid structure in the intestine. This review highlights the development of transgenic plant vaccine, its action, and certain important diseases of animals, poultry and humans and status of plant vaccine developed against them.