PurposeIntersectional viral expression of ChR2-EYFP in cells expressing Cre AND NOT Flp
|Item||Catalog #||Description||Quantity||Price (USD)|
|Plasmid||137163||Standard format: Plasmid sent in bacteria as agar stab||1||$75|
|AAV8||137163-AAV8||Virus (100 µL at titer ≥ 1×10¹³ vg/mL) and Plasmid.|
This material is available to academics and nonprofits only.
- Backbone size w/o insert (bp) 4600
Vector typeAAV, Cre/Lox, Synthetic Biology ; Flp/FRT
Growth in Bacteria
Growth Strain(s)NEB Stable
Copy numberHigh Copy
Gene/Insert nameCon/Foff 2.0-ChR2-EYFP
Insert Size (bp)2400
- Promoter nEF
- Cloning method Restriction Enzyme
- 5′ cloning site BamHI (unknown if destroyed)
- 3′ cloning site EcoRI (unknown if destroyed)
- 5′ sequencing primer GACCCTGCTTGCTCAACTCT
- 3′ sequencing primer GGGCCACAACTCCTCATAAA (Common Sequencing Primers)
Terms and Licenses
- Not Available to Industry
Additional sequencing primers: Intron 2F GGGACGACATGACTTAACCAG; Intron 2R CCAGCCCTTCTCATGTTCAG; Intron 1F CCTGTATGTGACCCATGTGC; Intron 1R: GCACATGGGTCACATACAGG
Information for AAV8 (Catalog # 137163-AAV8) ( Back to top )
Ready-to-use AAV8 particles produced from pAAV-nEF-Con/Foff 2.0-ChR2-EYFP (#137163). In addition to the viral particles, you will also receive purified pAAV-nEF-Con/Foff 2.0-ChR2-EYFP plasmid DNA.nEF-driven, Cre-dependent expression of ChR2-EYFP for optogenetic activation (inhibited in the presence of Flp recombinase). These AAV preparations are suitable purity for injection into animals.
- Volume 100 µL
- Titer ≥ 1×10¹³ vg/mL
- Pricing $350 USD for preparation of 100 µL virus + $30 USD for plasmid.
- Storage Store at -80℃. Thaw just before use and keep on ice.
- Shipment Viral particles are shipped frozen on dry ice. Plasmid DNA (≥ 200ng) will also be included in the shipment.
Viral Production & Use
- Packaging Plasmids encode adenoviral helper sequences and AAV rep gene, AAV8 cap gene
- Buffer PBS + 0.001% Pluronic F-68 + 200 mM NaCl
- Serotype AAV8
- Purification Iodixanol gradient ultracentrifugation
- Reporter Gene EYFP (Cre-dependent)
Requestor is responsible for compliance with their institution's biosafety regulations. Lentivirus is generally considered BSL-2. AAV is generally considered BSL-1, but may require BSL-2 handling depending on the insert. Biosafety Guide
Viral Quality Control
- Addgene ensures high quality viral vectors by optimizing and standardizing production protocols and performing rigorous quality control (QC) (see a list of our QC assays). The specific QC assays performed varies for each viral lot. To learn which specific QC assays were performed on your lot, please contact us.
- Titer: the exact titer of your sample will be reported on the tube. The titer you see listed on this page is the guaranteed minimum titer. See how titers are measured.
Visit our viral production page for more information.
Using FLEX vectors in vivo: LoxP sites in FLEX plasmids are known to recombine during DNA amplification and viral vector production, which may result in a minority of Cre-activated (i.e., "flipped") viral vectors. Addgene has measured this occurs in 0.1-0.8% of viral particles in our typical production protocol. This can lead to a small number of cells exhibiting Cre-independent transgene expression in vivo. To address this, it is necessary to optimize the injection volume and viral titer to find the optimal AAV dosage required for Cre-dependent transgene expression and function in vivo. This may include reducing the viral particle dosage in order to reduce the likelihood of Cre-independent expression.
These plasmids were created by your colleagues. Please acknowledge the Principal Investigator, cite the article in which the plasmids were described, and include Addgene in the Materials and Methods of your future publications.
For your Materials & Methods section:pAAV-nEF-Con/Foff 2.0-ChR2-EYFP was a gift from Karl Deisseroth & INTRSECT 2.0 Project (Addgene plasmid # 137163 ; http://n2t.net/addgene:137163 ; RRID:Addgene_137163)
For viral preps, please replace (Addgene plasmid # 137163) in the above sentence with: (Addgene viral prep # 137163-AAV8)
For your References section:Comprehensive Dual- and Triple-Feature Intersectional Single-Vector Delivery of Diverse Functional Payloads to Cells of Behaving Mammals. Fenno LE, Ramakrishnan C, Kim YS, Evans KE, Lo M, Vesuna S, Inoue M, Cheung KYM, Yuen E, Pichamoorthy N, Hong ASO, Deisseroth K. Neuron. 2020 Jun 20. pii: S0896-6273(20)30432-3. doi: 10.1016/j.neuron.2020.06.003. 10.1016/j.neuron.2020.06.003 PubMed 32574559