AAV Edge System
Develop gene therapies with greater precision, quality, and scalability

Stable Production
Upgraded gene therapy development
Asimov’s AAV Edge System is a modular suite of technologies to optimize the design and manufacture of AAV gene therapies. Developers and manufacturing organizations can access the tools that best address their payload design and production needs in one place.
Scalable manufacturing
Fully stable AAV producer cell lines achieve up to 6E15 vg/L before purification, enabling greater control over cost, quality, and scalability. Alternatively, move fast with our optimized transient system.
Engineer smarter payloads
Leverage our genetic and computational toolkit for tissue-specific expression, reduced transgene toxicity during production, and increased in vivo potency.
Payload Design
Production System
Stable AAV Production
Semi-Stable AAV Production
Transient AAV Production
- Fully stable HEK293 producer cell lines with custom capsid and transgene
- No transfection required, just add inducer
- Optimized production protocols
- Semi-Stable HEK293 cell lines
- One plasmid transfection with no inducer required
- Optimized production protocols
- Robust HEK293 cell lines
- Transient plasmid system
- Optimized production protocols
We provide tools for you to develop a cell line
We will ship the software, cells, and genes you need to design your cell line in-house.
We develop a cell line for you
Using our platform, we will design a custom cell line specifically for your needs and ship it to you.
We provide tools for you to develop a cell line
We will ship the software, cells, and genes you need to design your cell line in-house.
You design DNA
You use our software to design and optimize genetic constructs using best-in-class parts and models.
We build DNA
We will ship the software, cells, and genes you need to design your cell line in-house.
You transfect cells
You transfect and generate stable cell lines and use our software for data analysis.
You request producer cells
You request a producer cell line for a biologic or gene therapy.
We do cell line development
We do cell line development and process development at our site.
We share progress
We share progress and data with you using our software.
We ship you producer cell banks
We ship you clonal cell banks and transfer the process to your site.
Payload Design
Production System
Stable AAV Production
Semi-Stable AAV Production
Transient AAV Production
- Fully stable HEK293 producer cell lines with custom capsid and transgene
- No transfection required, just add inducer
- Optimized production protocols
- Semi-Stable HEK293 cell lines
- One plasmid transfection with no inducer required
- Optimized production protocols
- Robust HEK293 cell lines
- Transient plasmid system
- Optimized production protocols
Stable AAV: Setting a New Standard for Viral Vector Manufacturing
High performance stable cell lines
Low COGS: Lower cost of goods through high-titer, scalable manufacturing that can reduce cost per dose
Reduced risk: Streamline operations by eliminating GMP plasmids required for transient transfection, simplifying production, and derisking the supply chain
Increased manufacturing control: Greater consistency from clonal stable lines reduces variability within a batch as well as across batches
Fast timeline: Custom Stable AAV Producer cell lines in 20 weeks.
E12 titer with eGFP using 2-plasmid system
2-plasmid system outperforms 3-plasmid system across both titer and % full, while reducing GMP plasmid cost.
anti-BCMA Car LV
8.3E7 TU/mL
Yescarta CAR LV
1.1E8 TU/mL
Kymriah CAR LV
1.5E8 TU/mL
Kymriah case study:
LV Edge Packaging System vs transient
The LV Edge Packaging outperforms commercially-available systems.
Titers: Codon optimization of the CDS results in a 5-fold improvement in functional titer and 10-fold improvement of the infectivity ratio. As expected, both LV Edge Packaging and standard four-plasmid systems both show increased titers from sequence optimization.
Variability: Lentiviral production from a single-plasmid transfection results in reduced inter-batch variability versus the standard four-plasmid process. Importantly, the observed reduction in variability is maintained across the different sequence-optimized transfer plasmids.

Speak to a member of our team
Customize your payload using our suite of tools that enable precise gene expression, improve manufacturability, and enhance potency.
Tissue-specific promoters
Machine-guided design of tissue-specific promoters to enhance specificity.
Most AAV therapeutic transgenes are expressed using ubiquitous promoters, which are transcriptionally active in a broad set of tissues. This indiscriminate expression increases the risk of undesired off-target effects and tissue toxicity.
Our ML-derived tissue-specific promoters (TSPs) leverage multi-omics analysis for targeted expression of AAV payloads, increasing the selectivity and safety profile of the drug product. Our promoters show a >200-fold dynamic range in gene expression between target and off-target tissues.
Heart TSPs are available off-the-shelf. Contact us for more information and custom design of promoters to address your specific needs.

GOI silencing during production
GOI silencing in host cell
Toxic genes of interest (GOI) can significantly impact bioproduction titers. Asimov's genetic circuits silence transgene expression in the production host cell without impacting therapeutic function.

Sequence optimization
Asimov sequence optimization results in up to 7x increase in transduced-cell expression
Sequence optimization using our computer-aided design (CAD) software, Kernel, shows up to 7x improvement in expression for clinical transgenes. HEK293 cells were transduced with AAV and expression was measured using flow cytometry.

Speak to a member of our team
The AAV Edge Transient Production System includes a clonal suspension-adapted GMP-banked HEK293 cell line, an optimized plasmid system for transient production, and model-guided processes.
The production system achieves E15 vg/L titers.
Choose the right tools for you
Cell line
High-performance suspension-adapted clonal HEK293 host
- Suspension-adapted in chemically defined media.
- Rapid doubling time, fast recovery, and non-clumpy.
- Documented monoclonality.
- GMP banked under ICH Q5 guidelines.
Model-guided process development
Robust, scalable and ready-to-transfer
- Tested in multiple scales.
- Compatible with off-the-shelf consumables.
- Platform process optimized with computational models.
We optimized our process in 3 phases

250+
Runs performed
8
Parameters calibrated
2
Scales tested
Well-documented process
Ready to transfer with ease
Supported by our experts
Transient plasmid system
Optimized plasmid system for transient AAV production
- Select serotype of choice, enhance functionality through genetic parts and/or sequence optimization.

How to work with us
1
Define target specifications
Work with Asimov's team to outline your desired gene therapy design and production needs.
2
Payload design
Customize your therapeutic payload using our collection of payload genetic modules, accessed via Kernel, our CAD software.
3

Deploy system
Produce your AAV using our GMP clonal HEK293 host, optimized plasmid systems, and model-guided processes.
Speak to a member of our team
Raise manufacturing standards and unlock commercially readiness from the start with custom, high titer AAV Stable Producer HEK293 cell lines.
AAV Edge Stable Producer Cell Lines achieve titers up to 6E15 vg/L and can be delivered within 20 weeks for your payload and capsid of choice.
Why choose AAV Edge Stable Producer Cell Lines?
Low COGS
- Lower cost of goods through high-titer, scalable manufacturing that can reduce cost per dose
Reduced risk
- Streamline operations by eliminating GMP plasmids required for transient transfection, simplifying production, and derisking the supply chain
Increased manufacturing control
- Greater consistency from clonal stable lines reduces variability within a batch as well as across batches
Production system performance
High performance stable cell lines
Fully stable AAV producer cell lines to improve scalability, safety, and consistency. Cell lines achieve titers up to 6E15 vg/L.
E12 titer with eGFP using 2-plasmid system
2-plasmid system outperforms 3-plasmid system across both titer and % full, while reducing GMP plasmid cost.
anti-BCMA Car LV
8.3E7 TU/mL
Yescarta CAR LV
1.1E8 TU/mL
Kymriah CAR LV
1.5E8 TU/mL
Kymriah case study:
LV Edge Packaging System vs transient
The LV Edge Packaging outperforms commercially-available systems.
Titers: Codon optimization of the CDS results in a 5-fold improvement in functional titer and 10-fold improvement of the infectivity ratio. As expected, both LV Edge Packaging and standard four-plasmid systems both show increased titers from sequence optimization.
Variability: Lentiviral production from a single-plasmid transfection results in reduced inter-batch variability versus the standard four-plasmid process. Importantly, the observed reduction in variability is maintained across the different sequence-optimized transfer plasmids.

How it works
Sequence transfer
You request cell line development for your desired capsid and gene of interest (GOI) and provide us with their sequences. Optionally, we can use our design software, Kernel, to codon optimize the GOI sequence.
CLD start
Suspension-adapted stable pool generation
Asimov generates stable pools by transfecting customized plasmids and selecting for integrants. All work is performed at our state-of-the-art facility in Boston.
1 month

Suspension adaptation
Adherent stable pools are suspension adapted into chemically-defined media.
12 weeks
Single cell printing and clone screening
Single cell clones are printed from suspension-adapted pools, with monoclonality verification via pre- and post-deposition imaging using the Cytena F-sight™ and Solentim Cell Metric®. We use a proprietary screening method to enrich for high-performance clones.
16 weeks
Ambr®15 screen and optional scale-up
Clones are characterized in Ambr®15 bioreactors. Optionally, model-driven process optimization can be performed at larger scales to further improve performance.
20 weeks
Research Cell Bank (RCB) release
What you get
Top 5 clones
- Producer cell lines for your AAV gene therapy of interest
Platform process
- Optimized platform process compatible with off-the-shelf consumables
CMC-compliant documentation
- Plus a platform process to culture cells at your facility