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I've noticed that duration of the Nucleofector Program seems to change even when I haven't changed the program I am using. Why?

The duration time of a program is dependent on the number of the program. The duration is also dependent on how long the Nucleofector™ Device has been turned on as well as the number of Nucleofections you have done in the last couple of minutes. When...

What is the lowest amount of DNA which can be used for transfection? Do I need a DNA carrier for low DNA amounts?

The recommended amount of DNA per 100 µl reaction is 0.5µg-5 µg. No carrier is needed.

Can I use larger cuvettes for my Nucleofection Reaction ? Can I use the cuvettes more than once?

No. The electrical parameters provided by the Nucleofector™ Device are optimized for the cuvettes contained in the Nucleofector™ Kits. The cuvettes are single-use only. Using the cuvettes more than once will result in higher cell death and lower...

If I use Miltenyi paramagnetic beads for positive selection of cells, i.e. beads remain on the cell surface, does that influence Nucleofection results?

No, it seems that the beads bound to the cell surface do not have any influence on Nucleofection™. Larger magnetic beads (i.e. > 1µm) may disturb the Nucleofection™ process and negatively influence cell viability and efficiency.

Can I integrate the 96-well Shuttle Device into a liquid handling system?

Yes. The 96-well Shuttle™ Device is designed in such a way that it is addressable by robot grippers. Furthermore, the software contains the required interface to be connected with the LHS software. However, the practical implementation for each...

Can I use the Nucleofector 2b Solutions and Optimized Protocols with the 4D-Nucleofector X-Unit or the 96-well Shuttle Device?

No. The 4D-Nucleofector and 96-well Shuttle™ System uses specifically optimized electrical parameters and solutions. Five different 4D-Nucleofector or 96-well Shuttle™ Solutions are available for primary cells. For cell lines, three different 96-well...

Can I use a Nucleofector I or Nucleofector 2b Device together with the 96-well Shuttle Device?

No, the 96-well Shuttle™ only works in conjunction with the Nucleofector™ IIs Device or our 4D-Nucleofector™ Device.

How long does it take to obtain stable transfectants?

Depending on individual cell type and doubling rate, selection of stable transfectants will take between 7 and 28 days. Expansion and characterization of single cell clones will take several weeks in addition.

I have a very high transfection efficiency but most of my cells die during selection, is this to be expected?

This is the normal pattern you should expect to see. Only a small proportion (1/10,000 to 1/100) of all transfected cells will integrate the transfected DNA into their genome and become stable transfectants. The remaining cells lose the transfected...

Is it possible to use different substrates (e.g. siRNA duplexes) with the 96-well Shuttle Device?

Yes. Transfection can be done with any substrate AND under exactly the same conditions. For example, the same conditions (96-well Shuttle™ Solution and program) are used for siRNA transfection or shRNA vectors. This greatly facilitates the...