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Related Experiment Video

Updated: Dec 12, 2025

Non-Viral Engineering of Primary Human T Cells via Homology-Mediated End-Joining Targeted Integration of Large DNA Templates

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Thermal Control of Engineered T-cells.

Mohamad H Abedi, Justin Lee, Dan I Piraner

ACS Synthetic Biology

|August 14, 2020

Summary

Researchers developed a new method to control genetically engineered T-cells using temperature. This allows for precise targeting of T-cell activity in the body, enhancing T-cell immunotherapy safety and efficacy.

Keywords:

CAR T-cells heat shock promoters immunotherapy mammalian synthetic biology thermal control

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Last Updated: Dec 12, 2025

Non-Viral Engineering of Primary Human T Cells via Homology-Mediated End-Joining Targeted Integration of Large DNA Templates

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Generation of Human Chimeric Antigen Receptor Regulatory T Cells

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Published on: January 3, 2025

Area of Science:

Immunology
Synthetic Biology
Biotechnology

Background:

Genetically engineered T-cells show therapeutic promise but lack external control mechanisms for precise in vivo localization.
Lack of spatiotemporal control can lead to off-target toxicity in T-cell therapies, particularly for solid tumors.
Temperature is an accessible external stimulus for in vivo tissue targeting via focused ultrasound or magnetic hyperthermia.

Purpose of the Study:

To evaluate heat shock promoters for thermal control of genetic circuits in primary human T-cells within a physiological temperature range (37-42 °C).
To engineer genetic architectures for tunable amplitude and duration of thermal activation in T-cells.
To demonstrate the application of thermally controlled T-cells for therapeutic functions like CAR expression, cytokine release, and tumor cell killing.

Main Methods:

Testing heat shock promoters to mediate thermal actuation of genetic circuits in primary human T-cells.
Developing genetic architectures for fine-tuning thermal activation parameters (amplitude and duration).
Assessing the control of chimeric antigen receptor (CAR) expression, cytokine production, and tumor cell lysis by thermally activated T-cells.

Main Results:

Successfully demonstrated thermal control of genetic circuits in human T-cells using heat shock promoters within the 37-42 °C range.
Introduced novel genetic designs enabling adjustable amplitude and duration of thermal T-cell activation.
Validated the system's ability to control therapeutic outputs, including CAR expression, cytokine secretion, and targeted tumor cell killing.

Conclusions:

Heat shock promoters can effectively mediate thermal actuation of genetic circuits in human T-cells.
The developed technology provides a tunable platform for spatiotemporal control of T-cell activity in vivo.
This approach offers a critical tool to enhance the safety and precision of T-cell-based therapies, particularly in solid tumor treatment.