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Plant Viral Vectors for Protein Expression
Yuri Y. Gleba and Anatoli Giritch
from: Recent Advances in Plant Virology (Edited by: Carole Caranta, Miguel A. Aranda, Mark Tepfer and J.J. Lopez-Moya). Caister Academic Press, U.K. (2011)
Plant-virus-driven transient expression of heterologous proteins is the basis of several mature manufacturing processes that are currently being used for the production of multiple proteins including vaccine antigens and antibodies. Viral vectors have also become useful tools for research. In recent years, advances have been made both in the development of first-generation vectors (those that employ the 'full virus' strategy) as well as second-generation vectors designed using the 'deconstructed virus' approach. This second strategy relies on Agrobacterium as a vector to deliver DNA copies of one or more viral RNA replicons. Among the most often used viral backbones are those of Tobacco mosaic virus, Potato virus X, and Cowpea mosaic virus. Prototypes of industrial processes that provide for high-yield, rapid scale-up, and fast manufacturing have been recently developed using viral vectors, with several manufacturing facilities compliant with good manufacturing practices (GMP) in place, and a number of pharmaceutical proteins currently in pre-clinical and clinical trials read more ...