Screening of Membrane Protein Production by Comparison of Transient Expression in Insect and Mammalian Cells
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Membrane proteins are difficult biomolecules to express and purify. In this paper, we compare the small-scale production of six selected eukaryotic integral membrane proteins in insect and mammalian cell expression systems using different techniques for gene delivery. The target proteins were C terminally fused to the green fluorescent marker protein GFP to enable sensitive monitoring. We show that the choice of expression systems makes a considerable difference to the yield and quality of the six selected membrane proteins. Virus-free transient gene expression (TGE) in insect High Five cells combined with solubilization in dodecylmaltoside plus cholesteryl hemisuccinate generated the most homogeneous samples for all six targets. Further, the affinity purification of the solubilized proteins using the Twin-Strep® tag improved protein quality in terms of yield and homogeneity compared to His-tag purification. TGE in High Five insect cells offers a fast and economically attractive alternative to the established methods that require either baculovirus construction and the infection of the insect cells or relatively expensive transient gene expression in mammalian cells for the production of integral membrane proteins.
Original language | English |
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Article number | 817 |
Journal | Biomolecules |
Volume | 13 |
Issue number | 5 |
Number of pages | 20 |
ISSN | 2218-273X |
DOIs | |
Publication status | Published - 2023 |
Bibliographical note
Publisher Copyright:
© 2023 by the authors.
- Chinese hamster ovary (CHO) cells, fluorescence-detection size-exclusion chromatography, human embryonal kidney (HEK) cells, insect cells, membrane proteins, transient gene expression
Research areas
ID: 353762311