TRANSFECTION OF MAMMALIAN CELLS USING LIPOFECTAMINE REAGENT

Thursday, October 16, 2003

Description
TRANSFECTION OF MAMMALIAN CELLS USING LIPOFECTAMINE REAGENT

Procedure
1. In a six-well or 35 mm tissue culture plate, seed ~2x 105 cells per well in 2 ml Basal Medium containing 10% FBS.
2. Incubate the cells at 37C in a CO2 incubator until the cells are 70-80% confluent. This will usually take 18-24 h.

3. Prepare the following solutions in 12 x 75 mm sterile tubes:

Solution A: For each transfection, dilute 2 g DNA (plasmid) in 375 l serum-free basal medium
Solution B: For each transfection, dilute 12 l LIPOFECTAMINE Reagent in 375 l serum-free medium

4. Combine the two solutions, mix gently, and incubate at room temperature for 15-45 min. The solution may appear cloudy, however this will not impede the transfection.

5. Wash the cells once with 2 ml serum-free medium.

6. For each transfection, add 750 l serum-free medium to each tube containing the lipid-DNA complexes. Do not add antibacterial agents to media during transfection. Mix gently and overlay the diluted complex solution onto the washed cells.

7. Incubate the cells for 5 h at 37C in a CO2 incubator.

8. Add 1.5 ml medium with 20% FBS without removing the transfection mixture. If toxicity is a problem, remove the transfection mixture and replace with normal growth medium.

9. Replace medium at 18-24 h following start of transfection.

10. Assay cell extracts for gene activity 24-72 h after the start of transfection, depending on cell type and promoter activity or add selective antibiotic for isolating stable transformants.

Recipes
Lipofectamine
Basal Medium containing 10% fetal bovine serum, 1% glutamine, 1% aa
Basal Medium containing 1% glutamine
Basal Medium containing 20% fetal bovine serum, 1% glutamine, 1% aa

Supplies

Tips

(责任编辑：泉水)

搜索

热门标签:

TRANSFECTION OF MAMMALIAN CELLS USING LIPOFECTAMINE REAGENT