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AAV-based process platform

Adeno-Associated Virus (AAV) is one of the most common viruses used as a viral vector in cell and gene therapies. This non-integrating vector offers many advantages as a viral vector for cell and gene therapies.

Using a HEK-293 cell line and a proprietary optimized transfection reagent, our AAV platform is compatible with suspension system, using shake flasks and single-use bioreactors, and is streamlined to reduce time-to-market for your cell and gene therapy products.

A fully integrated AAV platform

Manufacturing your AAV with Yposkesi’s platform, you will have access to a Plug-and-Play AAV platform, which is fully integrated. Because everything is optimized and set up with efficient procedures, the platform is fully integrated into our manufacturing and analytical structure. Our Experts have tested and improved Yposkesi’s AAV platform to produce premium viral vectors for your cell and gene therapies.

A scalable and highly productive AAV platform

Being scalable and highly productive, Yposkesi’s AAV platform delivers yields at harvest from 2×1013 VG/L to 3.4×1014 VG/L (vector dependent) with no loss of titer between 250 mL and 200 L/400 L scales, making it one of the most powerful AAV platforms on the market.

On top of that, our experts have gained experience with several serotypes and capsid variants.

AAV platform - Scalability and productivity graphs

An experienced, robust, and safe AAV platform

With more than 35 batches of current Good Manufacturing Practices (cGMP) AAV already produced, our highly qualified experts have the knowledge and experience needed to manufacture AAVs in a safe and cost-effective manner.

With a high success rate of >95%, Yposkesi’s AAV platform is robust and designed to produce high-quality grade AAVs.

The patient being at the heart of our manufacturing development, we take safety very seriously and have a proven Contamination Control Strategy (CCS).

About the cell line

Because innovation and constant improvement are one of our main concerns, we have developed “HEK+” cells, SV40 large T antigen encoding sequence deleted cell lines for our AAV platform. Coupled with a serum-free suspension process, the HEK+ cells offer stability and improved yields from our platform. Indeed, the HEK+ cell line improves the AAV productivity, regardless of the serotype at both small and large process scales and HEK+ cells are stable up to P39 with consistent performance, and without SV40 T antigen expression and with stable E1A and E1B mRNA expression levels.

Download the poster to learn more about HEK+

Frequently Asked Questions (FAQs)

What are the steps of an AAV manufacturing?

The manufacturing of AAVs involves several steps:

AAV platform steps

HEK293 or HEK+ cell thawing and expansion: To thaw and then expand the number of cells in the culture, this step can be done with an adherent or a suspension bioreactor.

Vector production: The AAVs are transfected into cells, which allows the production of large quantities of AAVs particles. This is usually done in multi-layer cell culture flasks or suspension bioreactors using chemical transfection reagents.

Virus purification: The AAVs particles are then purified from the cell culture media using techniques such as filtration, chromatography, and tangential flow filtration.

Analytical testing: The purified AAV is then tested to ensure that it is pure and free of contaminants. This can be done using techniques such as biochemical assays, molecular biology tests, protein assays, and potency assays.

Virus concentration: The purified AAV is then concentrated to the desired concentration using techniques such as ultra- or tangential flow filtration.

Formulation: The concentrated AAV is then formulated with excipients.

Drug substance: The final formulated bulk drug substance can be frozen and stored for later drug product manufacturing or can be onward processed to the drug product manufacturing step.

Fill and finish: As a last step, the formulated concentrated AAV is packaged into appropriate containers for storage and use. It is important to follow cGMP when producing AAVs to ensure that the final product is safe and effective for use in humans.

Is the AAV platform single-use?

Yes, Yposkesi’s AAV platform was developed using single-use equipment, except for certain chromatography resins which are packed into reusable columns. Working with single-use equipment allows our experts to work in a closed environment, reducing the risk of cross-contamination, and providing consistent batch-to-batch results. On top of that, it allows our scientists to work on a fast change-over time between batches, improving the cost-efficiency of our AAV platform.

Is the AAVs grown in serum-free media?

Yes, to avoid variability and contaminants in cell culture systems, Yposkesi’s AAV suspension platform uses serum-free media, and no animal product is used within the platform. Using defined components media allows us to manufacture AAVs with consistency and contamination control.

What is the procedure to have access to Yposkesi’s AAV platform?

When a cell and gene therapy developer wants to access our AAV platform, we will start with a standard feasibility study to optimise productivity, followed by the manufacturing of a technical batch and clinical batch, with associated analytics.

Do you also have a platform for lentivirus manufacturing?

Yes, a platform for lentivirus manufacturing, LentiSure™ is also available at Yposkesi. Learn more about the lentivirus platform here.

Do you keep on innovating to further optimize the platform?

Yes, because we know that science is constantly evolving, we are always working on innovating and improving our platforms. Learn more about our innovation programs by clicking here.

Would you like to know more?

Contact us!
Created by Yerokhoff Kostyiantine