UNIT 9.2 Transfection Using DEAE-Dextran
Published Online: 1 MAY 2001
Copyright © 2003 by John Wiley and Sons, Inc.
Lab Protocol Title
Current Protocols in Molecular Biology
How to Cite
Gulick, T. 2001. Transfection Using DEAE-Dextran. Current Protocols in Molecular Biology. 40:I:9.2:9.2.1–9.2.10.
- Published Online: 1 MAY 2001
- Published Print: OCT 1997
Transfection of cultured mammalian cells using diethylaminoethyl (DEAE)-dextran/DNA can be an attractive alternative to other transfection methods in many circumstances. The major advantages of the technique are its relative simplicity and speed, limited expense, and remarkably reproducible interexperimental and intraexperimental transfection efficiency. Disadvantages include inhibition of cell growth and induction of heterogeneous morphological changes in cells. Furthermore, the concentration of serum in the culture medium must be transiently reduced during the transfection. In general, DEAE-dextran DNA transfection is ideal for transient transfections with promoter/reporter plasmids in analyses of promoter and enhancer functions, and is suitable for overexpression of recombinant protein in transient transfections or for generation of stable cell lines using vectors designed to exist in the cell as episomes. This unit presents a general description of DEAE-dextran transfection, as well as two more specific protocols for typical experimental applications. The Basic Protocol is suitable for transfection of anchorage-dependent (attached) cells. For cells that grow in suspension, electroporation or lipofection is usually preferred, although DEAE-dextran-mediated transfection can be used.