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Accumulation pattern of IgG antibodies and Fab fragments in transgenic Arabidopsis thaliana plants

Chris De Wilde (UGent) , Riet De Rycke (UGent) , Tom Beeckman (UGent) , Myriam De Neve (UGent) , Marc Van Montagu (UGent) , Gilbert Engler (UGent) and Anna Depicker (UGent)
(1998) PLANT AND CELL PHYSIOLOGY. 39(6). p.639-646
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Abstract
For the further optimization of antibody expression in plants, it is essential to determine the final accumulation sites of plant-made antibodies. Previously, we have shown that, upon secretion, IgG antibodies and F-ab fragments can be detected in the intercellular spaces of leaf mesophyll cells of transgenic Arabidopsis thaliana plants. However, immunofluorescence microscopy showed that this is probably not their final accumulation site. In leaves, IgG and F-ab fragments accumulate also at the interior side of the epidermal cell layers and in xylem vessels. These accumulation sites correspond with the leaf regions where water of the transpiration stream is entering a space impermeable to the proteins or where water is evaporating. In roots, plant-made F-ab fragments accumulate in intercellular spaces of cortex cells, in the cytoplasm of pericycle and, to a lesser extent, endodermis cells, and in cells of the vascular cylinder. In other words, antibody accumulation occurs at the sites where mater passes on its radial pathway towards and within the vascular bundle, Taken together, our results suggest that, upon secretion of plant-made antibodies or F-ab fragments, a large proportion of these proteins are transported in the apoplast of A. thaliana, possibly by the water flow in the transpiration stream.
Keywords
VIRUS, PLASMODESMATA, PHLOEM, MOVEMENT, EXPRESSION, WATER, TOBACCO, COMPANION CELL, PROTEIN SECRETION, secreted proteins, transgenic plants, recombinant antibodies, Nicotiana tabacum, Arabidopsis thaliana, apoplastic water movement, TRANSPORT

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Chicago
De Wilde, Chris, Riet De Rycke, Tom Beeckman, Myriam De Neve, Marc Van Montagu, Gilbert Engler, and Anna Depicker. 1998. “Accumulation Pattern of IgG Antibodies and Fab Fragments in Transgenic Arabidopsis Thaliana Plants.” Plant and Cell Physiology 39 (6): 639–646.
APA
De Wilde, C., De Rycke, R., Beeckman, T., De Neve, M., Van Montagu, M., Engler, G., & Depicker, A. (1998). Accumulation pattern of IgG antibodies and Fab fragments in transgenic Arabidopsis thaliana plants. PLANT AND CELL PHYSIOLOGY, 39(6), 639–646.
Vancouver
1.
De Wilde C, De Rycke R, Beeckman T, De Neve M, Van Montagu M, Engler G, et al. Accumulation pattern of IgG antibodies and Fab fragments in transgenic Arabidopsis thaliana plants. PLANT AND CELL PHYSIOLOGY. 1998;39(6):639–46.
MLA
De Wilde, Chris, Riet De Rycke, Tom Beeckman, et al. “Accumulation Pattern of IgG Antibodies and Fab Fragments in Transgenic Arabidopsis Thaliana Plants.” PLANT AND CELL PHYSIOLOGY 39.6 (1998): 639–646. Print.
@article{178552,
  abstract     = {For the further optimization of antibody expression in plants, it is essential to determine the final accumulation sites of plant-made antibodies. Previously, we have shown that, upon secretion, IgG antibodies and F-ab fragments can be detected in the intercellular spaces of leaf mesophyll cells of transgenic Arabidopsis thaliana plants. However, immunofluorescence microscopy showed that this is probably not their final accumulation site. In leaves, IgG and F-ab fragments accumulate also at the interior side of the epidermal cell layers and in xylem vessels. These accumulation sites correspond with the leaf regions where water of the transpiration stream is entering a space impermeable to the proteins or where water is evaporating. In roots, plant-made F-ab fragments accumulate in intercellular spaces of cortex cells, in the cytoplasm of pericycle and, to a lesser extent, endodermis cells, and in cells of the vascular cylinder. In other words, antibody accumulation occurs at the sites where mater passes on its radial pathway towards and within the vascular bundle, Taken together, our results suggest that, upon secretion of plant-made antibodies or F-ab fragments, a large proportion of these proteins are transported in the apoplast of A. thaliana, possibly by the water flow in the transpiration stream.},
  author       = {De Wilde, Chris and De Rycke, Riet and Beeckman, Tom and De Neve, Myriam and Van Montagu, Marc and Engler, Gilbert and Depicker, Anna},
  issn         = {0032-0781},
  journal      = {PLANT AND CELL PHYSIOLOGY},
  keywords     = {VIRUS,PLASMODESMATA,PHLOEM,MOVEMENT,EXPRESSION,WATER,TOBACCO,COMPANION CELL,PROTEIN SECRETION,secreted proteins,transgenic plants,recombinant antibodies,Nicotiana tabacum,Arabidopsis thaliana,apoplastic water movement,TRANSPORT},
  language     = {eng},
  number       = {6},
  pages        = {639--646},
  title        = {Accumulation pattern of IgG antibodies and Fab fragments in transgenic Arabidopsis thaliana plants},
  url          = {http://pcp.oxfordjournals.org/content/39/6/639.abstract},
  volume       = {39},
  year         = {1998},
}

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