Abstract
Plant-specificN-glycosylation can represent an important limitation for the use of recombinant glycoproteins of mammalian origin produced by transgenic plants. Comparison of plant and mammalianN-glycan biosynthesis indicates that β1,4-galactosyltransferase is the most important enzyme that is missing for conversion of typical plantN-glycans into mammalian-likeN-glycans. Here, the stable expression of human β1,4-galactosyltransferase in tobacco plants is described. Proteins isolated from transgenic tobacco plants expressing the mammalian enzyme bearN-glycans, of which about 15% exhibit terminal β1,4-galactose residues in addition to the specific plantN-glycan epitopes. The results indicate that the human enzyme is fully functional and localizes correctly in the Golgi apparatus. Despite the fact that through the modified glycosylation machinery numerous proteins have acquired unusualN-glycans with terminal β1,4-galactose residues, no obvious changes in the physiology of the transgenic plants are observed, and the feature is inheritable. The crossing of a tobacco plant expressing human β1,4-galactosyltransferase with a plant expressing the heavy and light chains of a mouse antibody results in the expression of a plantibody that exhibits partially galactosylatedN-glycans (30%), which is approximately as abundant as when the same antibody is produced by hybridoma cells. These results are a major step in thein plantaengineering of theN-glycosylation of recombinant antibodies.
Bibliography
Bakker, H., Bardor, M., Molthoff, J. W., Gomord, V., Elbers, I., Stevens, L. H., Jordi, W., Lommen, A., Faye, L., Lerouge, P., & Bosch, D. (2001). Galactose-extended glycans of antibodies produced by transgenic plants. Proceedings of the National Academy of Sciences, 98(5), 2899â2904.
Authors
11
- Hans Bakker (first)
- Muriel Bardor (additional)
- Jos W. Molthoff (additional)
- Véronique Gomord (additional)
- Ingrid Elbers (additional)
- Lucas H. Stevens (additional)
- Wilco Jordi (additional)
- Arjen Lommen (additional)
- Loïc Faye (additional)
- Patrice Lerouge (additional)
- Dirk Bosch (additional)
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Dates
Type | When |
---|---|
Created | 23 years, 1 month ago (July 26, 2002, 10:45 a.m.) |
Deposited | 2 years, 4 months ago (April 22, 2023, 8:37 a.m.) |
Indexed | 3 weeks, 6 days ago (Aug. 5, 2025, 8:23 a.m.) |
Issued | 24 years, 6 months ago (Feb. 27, 2001) |
Published | 24 years, 6 months ago (Feb. 27, 2001) |
Published Online | 24 years, 6 months ago (Feb. 27, 2001) |
Published Print | 24 years, 6 months ago (Feb. 27, 2001) |
@article{Bakker_2001, title={Galactose-extended glycans of antibodies produced by transgenic plants}, volume={98}, ISSN={1091-6490}, url={http://dx.doi.org/10.1073/pnas.031419998}, DOI={10.1073/pnas.031419998}, number={5}, journal={Proceedings of the National Academy of Sciences}, publisher={Proceedings of the National Academy of Sciences}, author={Bakker, Hans and Bardor, Muriel and Molthoff, Jos W. and Gomord, Véronique and Elbers, Ingrid and Stevens, Lucas H. and Jordi, Wilco and Lommen, Arjen and Faye, Loïc and Lerouge, Patrice and Bosch, Dirk}, year={2001}, month=feb, pages={2899–2904} }