pFC-MCS-pA-SV40-Neo PhiC31 Donor Vector

Use this PhiC31 Donor Vector, which contains only an MCS and a kanamycin/neomycin resistance gene, to clone-in your own promoter and gene-of-interest

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pFC-MCS-pA-SV40-Neo PhiC31 Donor Vector

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pFC-MCS-pA-SV40-Neo PhiC31 Donor Vector

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10 µg
FC500A-1
$ 636
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Overview

One-step, non-viral, single-copy transgenesis

Use the one-step, non-viral pFC-MCS-pA-SV40-Neo PhiC31 Donor Vector to integrate your promoter and gene-of-interest expression cassette into a host cell’s genome using the PhiC31 Integrase System. Simply co-transfect with the PhiC31 Integrase Expression Plasmid (Cat.# FC200PA-1) and select for integrants using neomycin resistance. This vector maximizes your flexibility, containing only an MCS upstream of a poly-A site, so you can clone in your own promoter as well as your own gene-of-interest.

pFC-MCS-pA-SV40-Neo PhiC31 Donor Vector

The PhiC31 Integrase System

Popularly used for gene therapy development and related applications, one of the major advantages of SBI’s PhiC31 system is the tight control over copy number—the majority of clones that undergo integration events have single insertions (Supporting Data, Figure 1), reducing the risks of insertional mutagenesis effects.

Other benefits include:

  • Non-viral transgene delivery
  • Single-copy integration
  • Preferential integration at active sites
  • Delivery of inserts with no size constraints
  • Easy generation of cell lines

When you want non-viral gene delivery, have a large insert, and/or need controlled, single-copy genomic integration, turn to the PhiC31 Integrase System.

How It Works

One-step transgene delivery with the PhiC31 Integrase System

With the PhiC31 Integrase System, you simply clone your gene-of-interest into the attB Donor Plasmid, and then (Step 1) co-transfect with a PhiC31 Integrase Expression Plasmid. (Inside the cell) The PhiC31 Integrase is transiently expressed, and mediates site-specific recombination between the attB site on the donor plasmid and a pseudo attP site in the genome. (Result) Because pseudo attP sites are typically present in transcriptionally active sites of the genome, your gene-of-interest will likely be integrated into an active region of the genome.

One-step transgene delivery with the PhiC31 Integrase System

Supporting Data

Streamlined gene delivery with the PhiC31 Integrase System

With the PhiC31 Integrase-based reprogramming system, the majority of clones that undergo integration events have single insertions

Figure 1. With the PhiC31 Integrase System, the majority of clones that undergo integration events have single insertions. Southern blot analysis of genomic DNA from positive clones co-transfected with both the PhiC31 Integrase Expression Plasmid (Cat.# FC200PA-1) and the pCOBLW (CAG-Oct4-Sox2-Klf4-Myc-GFP-SV40-Neo) Mouse Reprogramming PhiC31 Donor Plasmid shows the copy number status for 16 different iPSC lines. With both restriction enzymes used, 14 out of 16 lines show single insertions (88%) demonstrating the tight copy number control possible with the PhiC31 Integrase System.

The PhiC31 Integrase System efficiently introduces a puromycin resistance marker to HEK293 cells

Figure 2. The PhiC31 Integrase System efficiently introduces a puromycin resistance marker to HEK293 cells. The dual promoter PhiC31 Donor Vector pFC-PGK-MCS-EF1-GFP-Puro (Cat.# FC551A-1) was co-transfected into HEK293 cells with either carrier DNA (top plate) or the PhiC31 Integrase Expression Plasmid (bottom plate) and the cells placed under puromycin selection after three days. After an additional eleven days, the cells were fixed and stained with a solution of 50% methanol plus 1% methylene blue to image colonies. Only the cells co-transfected with integrase formed colonies (bottom panel), demonstrating the high efficiency of the PhiC31 Integrase System for transgene delivery.

The PhiC31 Integrase System efficiently introduces a puromycin resistance marker and GFP to HEK293 cells

Figure 3. The PhiC31 Integrase System efficiently introduces a puromycin resistance marker and GFP to HEK293 cells. The dual promoter PhiC31 Donor Vector pFC-PGK-MCS-EF1-GFP-Puro (Cat.# FC551A-1) was co-transfected into HEK293 cells with the PhiC31 Integrase Expression Plasmid (bottom plate), the cells placed under puromycin selection after two days, and cells imaged after another four and eleven days. Comparison of phase versus fluorescence imaging shows that the majority of cells robustly express the GFP reporter.