SYNTHETIC BIOLOGY FOUNDRY
Precision Control for Next‑Generation Therapeutics
Many promising cell and gene therapy programs are limited not by their biological target, but by unpredictable gene expression, safety risks, and regulatory uncertainty. GeneFab’s Synthetic Biology Foundry was built to solve these challenges by engineering precise, reliable, and clinically relevant control of gene expression.
We partner with therapeutic developers to reduce uncertainty, mitigate toxicity, and unlock new therapeutic possibilities—by engineering the regulatory biology at the heart of their platform.
High‑Performance Regulatory Technologies Designed for Real‑World Use
GeneFab designs, builds, and validates synthetic regulatory elements that perform reliably in complex therapeutic applications —not just in proof‑of‑concept studies.
Core Capabilities
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Synthetic promoters for targeted cell-type and cell‑state specific gene expression
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Drug‑responsive switches using FDA‑approved small molecules
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Complex genetic circuit design and optimization
These systems enable therapeutic expression programs that:
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Activate only in defined cell types or biological states
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Respond dynamically to externally administered, clinically approved compounds
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Provide tunable control throughout development and clinical use
Built for the Real‑World Challenges of Cell and Gene Therapy Development
Our gene circuit and regulatory solutions are designed to work across therapeutic modalities, providing reliable expression, improved safety, and on‑demand control so teams can advance promising programs with greater confidence.
Related GeneFab services
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Design and optimization of gene circuits — Cell state regulators, custom promoters and UTRs, drug-regulated switches, sense-and-respond circuits & logic gates
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Customized cell/vector engineering
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High throughput screening in relevant therapeutic models
Frequently asked questions
What does GeneFab's Synthetic Biology Foundry do?
GeneFab's Synthetic Biology Foundry engineers precise control over gene expression for cell and gene therapy developers. Core capabilities include synthetic cell-type-specific promoters, drug-responsive switches that respond to FDA-approved small molecules, and the design and optimization of complex genetic circuits — all validated in clinically relevant models, not just proof-of-concept assays.
What are synthetic promoters and why do cell and gene therapies need them?
Synthetic promoters are engineered DNA sequences that turn a therapeutic gene on only in defined cell types or biological states. They reduce off-target expression, mitigate toxicity, and improve safety profiles. GeneFab designs synthetic promoters for cell-type and cell-state specific gene expression, enabling therapies that activate exactly where and when they are needed.
What is a drug-responsive switch in gene therapy?
A drug-responsive switch is a genetic control element that lets clinicians turn a therapeutic gene on or off using an externally administered small molecule. GeneFab builds drug-responsive switches using FDA-approved compounds, giving sponsors tunable, on-demand control of therapeutic expression throughout preclinical development and clinical use.
How do gene circuits improve cell and gene therapy safety?
Gene circuits combine multiple regulatory elements — promoters, sensors, logic gates, and switches — so a therapy responds dynamically to the cellular environment instead of expressing constitutively. This conditional expression reduces toxicity, narrows on-target activity to the right cell state, and provides a built-in safety layer that regulators increasingly expect for advanced therapies.
Can GeneFab support synthetic biology for both gene therapy and cell therapy programs?
Yes. GeneFab's regulatory technologies are designed to work across therapeutic modalities, including AAV and lentiviral gene therapies, CAR-T, CAR-NK, and other engineered cell therapies. The same synthetic promoters, switches, and circuits can be deployed across vector and cell platforms, allowing developers to use one regulatory toolkit across a pipeline.
What sets GeneFab's synthetic biology services apart from academic platforms?
GeneFab's synthetic biology elements are designed and validated for real-world therapeutic use, not just proof-of-concept demonstrations. The foundry is integrated with GeneFab's GMP manufacturing facility in Alameda, CA, so the same regulatory elements designed in the foundry can move directly into IND-enabling and clinical manufacturing — without re-engineering at scale-up.
How do I start a synthetic biology project with GeneFab?
Reach out through the GeneFab contact form with a description of your therapeutic target, modality, and the type of expression control you need (cell-state specificity, drug-regulated activation, or full gene-circuit design). GeneFab's team will scope a synthetic biology engagement, including high-throughput screening in relevant therapeutic models.
