期刊
JOURNAL OF STRUCTURAL BIOLOGY
卷 175, 期 2, 页码 209-215出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jsb.2011.04.017
关键词
Automated tissue culture; Eukaryotic expression system; HEK 293 cells; Transient transfection; HYPERFlask
资金
- European Union [211252, 227764]
- Wellcome Trust
- UK Medical Research Council
- Medical Research Council [G1000099, G19/3, G0900084, G1100525, G0700232] Funding Source: researchfish
- MRC [G0900084, G0700232, G1000099, G19/3] Funding Source: UKRI
Traditional mammalian expression systems rely on the time-consuming generation of stable cell lines; this is difficult to accommodate within a modern structural biology pipeline. Transient transfections are a fast, cost-effective solution, but require skilled cell culture scientists, making man-power a limiting factor in a setting where numerous samples are processed in parallel. Here we report a strategy employing a customised CompacT SelecT cell culture robot allowing the large-scale expression of multiple protein constructs in a transient format. Successful protocols have been designed for automated transient transfection of human embryonic kidney (HEK) 293T and 293S GnTI(-) cells in various flask formats. Protein yields obtained by this method were similar to those produced manually, with the added benefit of reproducibility, regardless of user. Automation of cell maintenance and transient transfection allows the expression of high quality recombinant protein in a completely sterile environment with limited support from a cell culture scientist. The reduction in human input has the added benefit of enabling continuous cell maintenance and protein production, features of particular importance to structural biology laboratories, which typically use large quantities of pure recombinant proteins, and often require rapid characterisation of a series of modified constructs. This automated method for large scale transient transfection is now offered as a Europe-wide service via the P-cube initiative. (C) 2011 Elsevier Inc. All rights reserved.
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