推薦產品
包裝
pkg of 2 vials (20μL aliquot for each of the 2 kit components)
濃度
500 ng/μL
應用
CRISPR
運輸包裝
dry ice
儲存溫度
−20°C
一般說明
This product is a kit containing two lentiviral plasmids: one plasmid that utilizes the EF1 alpha promoter to drive expression of MS2-P65-HSF1 and a hygromycin resistance cassette linked by a 2A peptide (EF1a-MS2-P65-HSF1-2A-Hygromycin) and one plasmid that utilizes the EF1 alpha promoter to drive expression of dCas9-VP64 and blasticidin resistance cassette also linked by a 2A peptide (EF1a-dCas9-VP64-2A-Blasticidin). The vector composition allows for easy selection following successful transfection or transduction. Use Sigma′s lentiviral MS2-P65-HSF1 or dCas9-VP64 plasmids for generation of lentiviral particles and efficient production of stable cell lines expressing MS2-P65-HSF1 and/or dCas9-VP64. The two plasmids are part of a 3 part CRISPR system with individual dCas9-VP64, MS2-p65-HSF1 and gRNA expression vectors used for CRISPR based transcipritonal activation and genome wide gain of function screening.
To order gRNA in any format click here
To order gRNA in any format click here
應用
Functional Genomics/Target Validation
- Unbiased forward genetic screening
- Strong transcriptional activation in multiple cell lines
- Manufacture of dCas9-VP64 and MS2-p65-HSF1 expressing Lentiviral Particles
特點和優勢
- Highly specific and highly active
- Sequence verified high purity plasmid DNA
- Activates genes through transcriptional activation rather than cDNA based overexpression
Learn more about SAM CRISPR Activators at SigmaAldrich.com/CRISPRa
成分
This kit contains 2 components:
2 Helper Constructs supplied at a concentration of 500 ng/μL in TE buffer (10μg of plasmid DNA)
2 Helper Constructs supplied at a concentration of 500 ng/μL in TE buffer (10μg of plasmid DNA)
- 20μL vial of dCas9-VP64-Blasticidin SAM CRISPRa Helper Construct 1 Plasmid DNA
- 20μL vial of MS2-P65-HSF1-Hygromycin SAM CRISPRa Helper Construct 2 Plasmid DNA
原則
CRISPR/Cas systems are employed by bacteria and archaea as a defense against invading viruses and plasmids. Recently, the type II CRISPR/Cas system from the bacterium Streptococcus pyogenes has been engineered to function in eukaryotic systems using two molecular components: a single Cas9 protein and a non-coding guide RNA (gRNA). The Cas9 endonuclease can be rendered inactive (dCas9) with mutations to the two protein domains, RuvC and HnH (D10A and H840A respectively), which are responsible for nuclease activity. The nuclease deficient protein can then be fused with the transcriptional activator VP64 and used in conjunction with a guide RNA modified with MS2 RNA aptamers that function to recruit the additional transcriptional coactivators p65 and HSF1. The assembled SAM complex is then used as a cargo delivery system to target gene promoters, enabling site-specific transcriptional activation of the gene of interest.
儲存類別代碼
10 - Combustible liquids
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Genome-scale transcriptional activation by an engineered CRISPR-Cas9 complex.
Konermann S, et al.
Nature, 517, 583-588 (2015)
Genome-scale transcriptional activation by an engineered CRISPR-Cas9 complex
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Nature, 517, 583-588 (2015)
Genome-scale CRISPR-Cas9 Knockout and Transcriptional Activation Screening.
Joung, S. et al.
Nature Protocols, 12, 828-863 (2017)
Julia Joung et al.
Nature protocols, 12(4), 828-863 (2017-03-24)
Forward genetic screens are powerful tools for the unbiased discovery and functional characterization of specific genetic elements associated with a phenotype of interest. Recently, the RNA-guided endonuclease Cas9 from the microbial CRISPR (clustered regularly interspaced short palindromic repeats) immune system
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