ArticleJournal for immunotherapy of cancer2026
Engineering single-vector logic-gated CAR T cells with transgene sizes beyond current limitations.
Article in Journal for immunotherapy of cancer, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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Who cites it
3 citing papers in PubMed.
- Barriers and Blueprints: Next-Generation Engineering Strategies for CAR-T Cell Therapy in Gastrointestinal Tumors.Pharmaceuticals (Basel, Switzerland) · 2026Review
- Applications of synthetic biology in biomedicine.Molecular biomedicine · 2026Review
- Engineering controllable CAR T-cell therapies: from binary safety switches to programmable immunity.Frontiers in immunology · 2026Review
Corrections and comments
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Authors and funding
11 authors.
Funding
Abstract
backgroundEngineering chimeric antigen receptor (CAR) T cells with logic-gated synthetic Notch (synNotch) receptor circuits can enhance specificity and mitigate on-target/off-tumor toxicity. However, the conventional synNotch system uses two lentiviral vectors encoding the synNotch receptor and inducible CAR, requiring dual transduction and cell sorting, which limits clinical translation. Integrating the synNotch-CAR circuit into a single lentiviral vector could overcome this limitation, yet manufacturing CAR T cells with large transgenes remains challenging, as increasing transgene size drastically reduces lentiviral titers and T cell transduction efficiency. Current production workflows compensate for low transduction efficiency by sorting transduced cells, further impeding clinical translation. Consequently, these constraints have limited the broader development of synNotch-CAR T cell therapies.
methodsWe engineered a single-vector synNotch (svsNotch) system that integrates all components of the conventional dual-vector circuit into one lentiviral vector to facilitate clinical translation. To overcome the low lentiviral titers and T cell transduction efficiency caused by the large svsNotch transgene, we established an optimized CAR T cell production workflow for effector T cells with large lentiviral transgenes.
resultsOur optimized workflow increased T cell transduction rates by up to 14.8-fold and enabled the production of effector T cells with lentiviral transgenes exceeding the effective packaging capacity limit of 9.2 kb. As a proof of concept, we engineered human epidermal growth factor receptor 2 (HER2)-mesothelin (MSLN) svsNotch (9.2 kb), in which a synNotch receptor targeting HER2 regulates the expression of a second-generation 4-1BBζ CAR against MSLN to enable selective targeting of double-positive HER2
conclusionThese data establish a framework for engineering logic-gated single-vector immunotherapies and provide an optimized workflow for generating CAR T cells with transgenes that exceed current size limitations.
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Registered trials
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