Purification, characterization, and N‐glycosylation of recombinant butyrylcholinesterase from transgenic rice cell suspension cultures
| Autor: | Carlito B. Lebrilla, Karen A. McDonald, Muchena J. Kailemia, Salem Alkanaimsh, Kalimuthu Karuppanan, Somen Nandi, Douglas M. Cerasoli, Raymond L. Rodriguez, Jasmine M. Corbin, C. Linn Cadieux |
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| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Glycosylation Genetically Modified Bioengineering N-glycosylation Applied Microbiology and Biotechnology Article Fucose law.invention 03 medical and health sciences chemistry.chemical_compound Affinity chromatography N-linked glycosylation law Humans Hupresin Butyrylcholinesterase Chromatography Liquid Downstream processing Chemistry Oryza Plants Plants Genetically Modified Recombinant Proteins Sialic acid downstream processing 030104 developmental biology Biochemistry Cell culture Recombinant DNA Filtration Chromatography Liquid Biotechnology |
| Zdroj: | Biotechnology and bioengineering, vol 115, iss 5 Biotechnol Bioeng |
| ISSN: | 1097-0290 0006-3592 |
| DOI: | 10.1002/bit.26557 |
| Popis: | Recombinant butyrylcholinesterase produced in a metabolically regulated transgenic rice cell culture (rrBChE) was purified to produce a highly pure (95%), active form of enzyme. The developed downstream process uses common manufacturing friendly operations including tangential flow filtration, anion-exchange chromatography, and affinity chromatography to obtain a process recovery of 42% active rrBChE. The purified rrBChE was then characterized to confirm its comparability to the native human form of the molecule (hBChE). The recombinant and native enzyme demonstrated comparable enzymatic behavior and had an identical amino acid sequence. However, rrBChE differs in that it contains plant-type complex N-glycans, including an α-1,3 linked core fucose, and a β-1,2 xylose, and lacking a terminal sialic acid. Despite this difference, rrBChE is demonstrated to be an effective stoichiometric bioscavenger for five different organophosphorous nerve agents in vitro. Together, the efficient downstream processing scheme and functionality of rrBChE confirm its promise as a cost-effective alternative to hBChE for prophylactic and therapeutic use. |
| Databáze: | OpenAIRE |
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