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Introduction to Custom Adenovirus Production Service
|Sipping and Storage Guidelines||Shipped by dry ice, stored at -80 ° C, effective for 1 year. Avoid repeatedly freezing and thawing.|
|Titer||> 1*10^10 PFU/ml.|
Applications and Figures
Quality control description
Frequently Asked Questions(FAQs)
- 1. Why does adenovirus have a relatively higher immunogenecity compared with rAAV?
AnswerThe adenovirus without E1/E3 can express all of the other genes in the viral backbone and hence induces immunogenic responses, while rAAV does not have any of the AAV genes, thus no immunogenicity from viral protein.
- 2. What is the role of the E1 Gene in adenoviruses?
AnswerSimply, the E1 gene products are early proteins that are transcribed in the early transcribed regions and required for proceeding subsequent steps in viral replication. The E1 gene contains E1A and E1B, involved in the replication of adenovirus. E1A is critical to start viral replication by promoting transcription from rep gene promoters, P5 and P19, and facilitate viral replication by activating the early adenovirus promoters.
- 3. How to store adenovirus?
AnswerIt would be better to store adenovirus in PBS at -80oC. Sucrose or DMSO may help to stabilize the vector.
- 4. How can you tell if your vector is lentiviral, retroviral, or adenoviral?
AnswerYou should blast your vector sequence and see if there’re sequences of reverse transcriptase and integrase (gene names: gag and pol), which are for lentiviral/retroviral vectors, but not for adenoviral. For another, if your plasmid is around 30-35kb in size, it's certainly adenoviral.
- 5. Is adenovirus a useful tool to study primary macrophage functions?
AnswerIn RAW264.7 and PM cells, adenovirus works very well, and it seems that IL1β expression is increased slightly after adenovirus transfection compared with negative control. While for the BMDM, adenovirus does not work, it may be better to use lentivirus instead, which gives a pretty good transduction efficacy and less inflammatory response.
- 6. Is it possible to infect a tissue preparation with lentivirus and afterwards with adenovirus and getting high efficiency in transduction?
AnswerIt is definitively possible to perform sequential transductions/infections. Polybreen, protamine sulfate or other transduction enhancing reagents are recommended to enhance viral particle infectivity.
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