Purification, characterization, and N-glycosylation of recombinant butyrylcholinesterase from transgenic rice cell suspension cultures

Jasmine M. Corbin, Muchena J. Kailemia, C. Linn Cadieux, Salem Alkanaimsh, Kalimuthu Karuppanan, Raymond L Rodriguez, Carlito B. Lebrilla, Douglas M. Cerasoli, Karen A. McDonald, Somen Nandi

Research output: Contribution to journalArticle

7 Scopus citations

Abstract

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.

Original languageEnglish (US)
Pages (from-to)1301-1310
Number of pages10
JournalBiotechnology and Bioengineering
Volume115
Issue number5
DOIs
StatePublished - May 1 2018

Keywords

  • butyrylcholinesterase
  • downstream processing
  • Hupresin
  • N-glycosylation

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Applied Microbiology and Biotechnology

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    Corbin, J. M., Kailemia, M. J., Cadieux, C. L., Alkanaimsh, S., Karuppanan, K., Rodriguez, R. L., Lebrilla, C. B., Cerasoli, D. M., McDonald, K. A., & Nandi, S. (2018). Purification, characterization, and N-glycosylation of recombinant butyrylcholinesterase from transgenic rice cell suspension cultures. Biotechnology and Bioengineering, 115(5), 1301-1310. https://doi.org/10.1002/bit.26557