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What is the advantage of the 96-well Shuttle Device over common lipofection, especially in a high throughput framework?

Several primary cells of high research relevance can simply not be transfected at relevant efficiencies and viabilities using lipofection. The same holds true for many suspension cell lines which are often used for protein production. These...

How long have you been able to observe GFP expression in primary Human Keratinocytes?

GFP expression has been observed for up to one week as measured by light and fluorescence microscopy.

What are the contents of a 96-well Shuttle Kit?

As the system will most likely be used for high-throughput approaches we provide plates which are pre-equipped with 96-well Nucleocuvette™ modules (2x8). In addition to that, the 96-well Shuttle solution, the supplement, and the pmaxGFP™ are also...

What is the advantage of the Nucleofector Technology over common electroporation (systems)?

High cell viability and high transfection efficiency with the Nucleofection™ Technology are the most prominent features. Nucleofection™, i.e., the transfer of DNA into the nucleus and not only the cytosol, is essential when working with non-dividing...

Do I need a special incubator for cultivation of insect cells ?

Insect cells are cultivated at lower temperatures than E.coli or mammalian cells (S2 cells at 24°C, Sf9 cells at 28°C). Therefore they need a dedicated incubator with appropriate temperature.

Which promoter can be recommended for transient protein production in mammalian cells ?

Vectors with a CMV promoter [e.g. pmaxCloning™, Lonza, Cat. No. VDC-1040] typically work fine for transient protein expression in mammalian cells, like HEK293, CHO or NSO. For insect cells, like Sf9 or Sf21, vectors with insect promoters are...

What is the best incubation time for transient protein production?

The optimal incubation time ranges from 2-days to 6 days depending on various factors like the stability of the protein in the medium, potential toxicity of the protein, cell density and stability of the plasmid in the nucleus. To check the...

Is it possible to pre-plate substrates when using the 96-well Shuttle for Nucleofection?

Yes, pre-plating of substrates like siRNA and subsequent storage at -20°C is possible.

Why is the Nucleofector Technology ideal for transient protein production ?

For many cell lines in suspension, especially sCHO, conventional transfection methods are very limited in efficiency. For protein production, suspension cells are favored over adherent cells because they are much easier to cultivate. Unlike...

What kind of protocol you recommend for stimulation of human T cells?

For getting the results we present in our datasheet, we recommend the follwing strategy: Cells should be stimulated and cultivated for 3 days before Nucleofection, preferentially on plates coated with 1 µg/ml anti-CD3 and 2 µg/ml anti-CD28 antibody....
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