jetPEI^®

Description

3 protocols to suit your application

In the forward protocol, the cells are split the day before transfection and the jetPEI^®/DNA complexes are added to the adherent or suspension cells.

The reverse protocol is the most appropriate when transfecting a pool of genes, such as a DNA library (Fig. 1). In this protocol, the jetPEI^®/DNA complexes are prepared or deposited in the wells prior to addition of the cells. Complexes are stable for up to 4 hours (Fig. 2).

The batch protocol has been developed to prepare a homogeneous pool of transfected cells. For this purpose, the cells are transfected just after trypsinization, while still in suspension. This protocol is preferred for drug screening applications and allows rapid processing, one day faster than the forward protocol.

Fig. 1: jetPEI^® reverse transfection protocol for HTS application.

Robust transfection complexes

Complexes formed with the water-soluble polymer jetPEI^® and DNA allow efficient transfection for up to 4 hours, in contrast to lipid-based reagents and calcium phosphate. Thus they allow plenty of time to dispense the complexes into the plates (Fig. 2).

Fig. 2: Effect of complex formation incubation time on transfection efficiency with jetPEI^®. HEK-293 cells were transfected in 96-well plates with pCMVLuc and jetPEI^® following the reverse transfection protocol. Luciferase activity was measured after 24 h.

Batch to batch reproducibility

HTS DNA transfection using jetPEI^® gives highly consistent transfection efficiency from batch-to-batch (Fig. 3).

Fig. 3: Batch-to-batch reproducibility using jetPEI^®. For each lot, HeLa cells were transfected in triplicate in the presence of serum using the standard protocol for a 24-well plate.

Efficient in a wide range of cell types

jetPEI^® successfully delivers genes to various adherent and non-adherent cell lines, as well as primary cells (Table 1). Over 550 publications using jetPEI^® can be found in the Polyplus-transfection Database. In addition, our online Database gives specific transfection conditions for over 400 cell lines and primary cells.

Table 1: Some common cell lines and primary cells successfully transfected using jetPEI^®.

Superior transfection results

jetPEI^® was compared to several other popular transfection reagents (Fig. 4). jetPEI^® was found to offer the best performance: high efficiency and low variability (small standard deviation).

Fig. 4: Transfection efficiency of a series of commercial reagents. HeLa cells were transfected in 24-well plates in the presence of 10% serum, using 1 µg pCMV-luciferase according to the manufacturers’ protocols. Luciferase expression was measured 24 h after transfection.

FAQ

If you have any questions regarding jetPEI^®, please visit our dedicated Frequently asked questions or contact us.

Applications

Our jetPEI^® reagent is perfectly well suited for plasmid DNA transfection, especially for High-Troughput Screening (HTS) application.

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Quality

Every batch of jetPEI^® is tested in-house  by DNA transfection of HeLa cells. Transfection with a firefly Luciferase gene under the control of CMV promoter gives at least 10⁹ RLU (relative light unit)/mg of protein. The value for each batch is indicated on the Certificate of Analysis.