The BacMam system allows you to run the assays you need in relevant cellular models quickly with high quality results. The technology offers the following key advantages:
The BacMam technology is based on double-stranded DNA insect viruses (baculovirus) as vehicles to efficiently deliver and express genes in mammalian cells. The baculovirus has been modified by engineering of a mammalian expression cassette for transgene expression in mammalian cells. Baculoviruses are non-replicating in mammalian cells and thus have an excellent safety profile combined with being well-tolerated by cells. BacMam reagents have been used in cell based assays, live cell imaging, stem cell biology and many other applications (View references).
To introduce genes into mammalian cells, a standard transduction process is used (Figure 1). BacMam particles are taken up by endocytosis and released for transcription and expression following migration to the nucleus. Gene expression begins within 4–6 hours of transduction and is at near maximum level within 24 hours of transduction.
Depending on transduction efficiency, cell type and cell division rate, the transgene remains detectable from 5 to 14 days.
Figure 1. BacMam-mediated gene delivery.
BacMam reagents are used in your normal workflow as any other reagent for cell-based research; take the reagent from the fridge, add it to cells, incubate and assay (Figure 2). Transduction is efficient and reproducible in most cell lines, including primary and stem cells. The BacMam platform enables easy transduction of large quantities of cells in batch mode; transduced cells can stored frozen in aliquots for later use, providing assay-ready cells when you need them—with no loss of activity. Cells can be assayed within hours of thawing and plating.
Figure 2—BacMam 2.0 workflow. Simply culture cells, add virus, incubate, and visualize BacMam 2.0 fluorescent protein expression.
BacMam technology is extremely well tolerated without apparent cytopathic effects, even at very high (1,000) virus particle to cell [multiplicity of infection (MOI)] ratios. Gene expression can therefore be easily titrated to a desired level by adjusting the dose. There are two basic transduction protocols: adherent cell transduction (Figure 3) and suspension cell transduction (Figure 4). Adherent cell transduction is more efficient, whereas transduction of cells in suspension gives a more convenient workflow and is recommended for high throughput based assay screening applications.
Figure 3. Adherent cell transduction protocol.
Figure 4. Suspension cell transduction protocol.
For Research Use Only. Not for use in diagnostic procedures.