Home -> Genomics -> Cloning Kits -> Minicircle DNA Vector Technology: Non-Integrative Sustained Expression

Minicircle DNA Vector Technology: Non-Integrative Sustained Expression

• Sustained expression over weeks
• No integration into the genome
• Optimized E. coli production strain
• Works in vitro and in vivo

Minicircles are episomal DNA vectors that are produced as circular expression cassettes devoid of any bacterial plasmid DNA backbone. Their smaller molecular size enables more efficient transfections and offers sustained expression over a period of weeks as compared to standard plasmid vectors that only work for a few days. For dividing cells, expression of the minicircles lasts up to 14 days. For non-dividing cells, expression of the minicircles drops slightly after the first week, but then can continue to express the transgenes for months.
Multiple minicircle vector formats with different promoters and fluorescent reporters developed by SBI are offered, see table below.

Production of minicircle DNA
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The Minicircle (MC) DNA elements are generated by intramolecular (cis-) recombination from a parental plasmid (PP) mediated by PhiC31 integrase. The full-size MC-DNA construct is grown in a special host E. coli bacterial strain ZYCY10P3S2T harboring an Arabinose-inducible system to express PhiC31 integrase and I-SceI endonuclease simultaneously.
Adding arabinose to the media turns on the integrase and endonuclease genes. The PhiC31 integrase produces the MCDNA molecules as well as PP-DNA backbone from the full-size MC-DNA construct. The Sce-I endonuclease then degrades the PP-DNA backbone preventing immune responses.


It is highly recommended to use the MC-Easy Minicircle DNA Production Kit, which contains the following optimized reagents for perfect Minicircle DNA preparations:

• ZYCY10P3S2T Minicircle DNA Producer Strain, 5 vials of competent cells
• 5X Minicircle Growth medium (200 ml)
• 10X Induction Medium (100 ml)
• Minicircle DNA Re-Purification Kit (5 preps) incl. Minicircle-safe DNAse, buffers, and Purification/Concentration columns
• MC-Fection Minicircle DNA Transfection Reagent (100 ul)

The kit is also available in a version without E. coli producer cells.
The E. coli producer cells are also available as a separate product.


Minicircle DNA Vector Options

SBI has created a set of minicircle parental cloning vector formats to choose from. Select from CMV or EF1a promoters, GFP, RFP and Puro markers. The minicircle parental cloning shRNA vector formats feature either CMV or EF1a expressing the markers and a downstream H1 promoter to express high levels of the cloned shRNA sequence. See the table below for the particular MCS cloning sites for each of the minicircle DNA vectors.

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Parental minicircle plasmids and the ZYCY10P3S2T Producer Bacterial Strain are available for purchase by not-for-profit researchers only. Commercial users may purchase pre-made mcDNA [ready-to-transfect] only. SBI also offers custom parental plasmid cloning and mcDNA production to both not-for-profit and commercial end users. Please contact us for additional details by using the link below. For buying the parental MC production system, commercial users should contact BioCat for further information by using the link below.
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Description Cat# Size Price    
MC-Easy Minicircle DNA Production Kit with ZYCY10P3S2T E. coli Minicircle Producer Strain MN920A-1-GVO-SBI 5 preps 1088 € DETAILS   Add to Cart 
MC-Easy Minicircle DNA Production Kit with ZYCY10P3S2T E. coli Minicircle Producer Strain MN925A-1-GVO-SBI 10 preps 1852 € DETAILS   Add to Cart 
MC-Easy Minicircle DNA Production Kit without ZYCY10P3S2T E. coli Minicircle Producer Strain MN910A-1-SBI 5 preps 734 € DETAILS   Add to Cart 
MC-Easy Minicircle DNA Production Kit without ZYCY10P3S2T E. coli Minicircle Producer Strain MN915A-1-SBI 10 preps 1263 € DETAILS   Add to Cart 
MC-Easy Media Bonus Pack (includes Growth and Induction Media) MN950A-1-SBI 5 preps 291 € DETAILS   Add to Cart 
ZYCY10P3S2T E. coli Minicircle Producer Strain (chemically competent cells, ready to transform) MN900A-1-GVO-SBI 5 vials 632 € DETAILS   Add to Cart 
Minicircle Parental Vector with CMV Promoter, without marker gene: pMC.CMV-MCS-SV40polyA MN501A-1-SBI 10 ug 746 € DETAILS   Add to Cart 
Minicircle Parental Vector with EF1 Promoter, without marker gene: pMC.EF1-MCS-SV40polyA MN502A-1-SBI 10 ug 746 € DETAILS   Add to Cart 
Minicircle Parental Vector with CMV Promoter, with GFP marker gene (separate EF1 promoter): pMC.CMV-MCS-EF1-GFP-SV40PolyA MN511A-1-SBI 10 ug 849 € DETAILS   Add to Cart 
Minicircle Parental Vector with CMV Promoter, with RFP marker gene (separate EF1 promoter): pMC.CMV-MCS-EF1-RFP-SV40PolyA MN512A-1-SBI 10 ug 849 € DETAILS   Add to Cart 
Minicircle Parental Vector with EF1 Promoter, with GFP marker gene (Bicistronic by IRES): pMC.EF1-MCS-IRES-GFP-SV40PolyA MN530A-1-SBI 10 ug 849 € DETAILS   Add to Cart 
Minicircle Parental Vector with EF1 Promoter, with RFP marker gene (Bicistronic by IRES): pMC.EF1-MCS-IRES-RFP-SV40PolyA MN531A-1-SBI 10 ug 849 € DETAILS   Add to Cart 
Minicircle Parental Vector Positive Control: GFP Insert driven by CMV Promoter: pMC.CMV-GFP-SV40PolyA MN601A-1-SBI 10 ug 746 € DETAILS   Add to Cart 
Premade Minicircle DNA Positive Control: GFP Insert driven by CMV Promoter: CMV-GFP-SV40PolyA MN601MC-1-SBI 40 ug 746 € DETAILS   Add to Cart 
Minicircle Parental Vector Positive Control: RFP Insert driven by CMV Promoter: pMC.CMV-rRFP-SV40PolyA MN602A-1-SBI 10 ug 746 € DETAILS   Add to Cart 
Premade Minicircle DNA Positive Control: RFP Insert driven by CMV Promoter: CMV-rRFP-SV40PolyA MN602MC-1-SBI 40 ug 746 € DETAILS   Add to Cart 
Minicircle Parental shRNA Cloning Vector with CMV Promoter expressing GFP marker gene and H1 Promoter expressing shRNA: pMC-CMV-GFP-H1-MCS MNSI500A-1-SBI 10 ug 849 € DETAILS   Add to Cart 
Minicircle Parental shRNA Cloning Vector with CMV Promoter expressing GFP/Puro marker genes and H1 Promoter expressing shRNA: pMC-CMV-GFP-T2A-Puro-H1-MCS MNSI505A-1-SBI 10 ug 849 € DETAILS   Add to Cart 
Minicircle Parental shRNA Cloning Vector with EF1 Promoter expressing GFP/Puro marker genes and H1 Promoter expressing shRNA: pMC-EF1-GFP-T2A-Puro-H1-MCS MNSI506A-1-SBI 10 ug 849 € DETAILS   Add to Cart 
Minicircle shRNA scramble control: pMC.CMV-GFP-H1-Scramble MNSI000A-1-SBI 10 ug 849 € DETAILS   Add to Cart 
Minicircle Parental Vector without Promoter, Multiple Cloning Site Version 1: pMC.BESPX-MCS1 MN100A-1-SBI 10 ug 746 € DETAILS   Add to Cart 
Minicircle Parental Vector without Promoter, Multiple Cloning Site Version 2: pMC.BESPX-MCS2 MN100B-1-SBI 10 ug 746 € DETAILS   Add to Cart 
Kanamycin Solution (50mg/ml) for Minicircle DNA Vector Technology MN800A-1-SBI 20 ml 184 € DETAILS   Add to Cart 
Arabinose Induction Solution (20%) Minicircle DNA Vector Technology MN850A-1-SBI 20 ml 153 € DETAILS   Add to Cart 

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