alexa High-level production and long-term storage of engineered antibodies in transgenic tobacco seeds.
Pharmaceutical Sciences

Pharmaceutical Sciences

Medicinal & Aromatic Plants

Author(s): Fiedler U, Conrad U

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Abstract We have used transgenic tobacco seeds to produce large amounts of a functionally active engineered antibody. A gene infusion encoding an antigen-binding single chain Fv protein (scFv) that recognizes the hapten oxazolone was constructed and used as a model. After characterization in a bacterial expression system ,the scFv gene was cloned into a plant expression cassette conferring seed specific expression, and transferred using Agrobacterium-mediated transformation, into Nicotiana tabacum. The expressed scFv could be detected in the developing as well as ripe seeds of regenerated transgenic plants, and the functionally active scFv is stabaly deposited and accumulates up to 0.67\% of the total soluble seed protein. After storage of ripe transgenic tobacco seeds for one year at room temperature there was no loss of scFv protein or its antigen-binding activity.
This article was published in Biotechnology (N Y) and referenced in Medicinal & Aromatic Plants

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