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Cell-free systems for development of biosensors
1School of Applied Sciences and Technology, Gujarat Technological University, Ahmedabad, Gujarat, India.
Progress in Molecular Biology and Translational Science
|January 25, 2026
Summary
Cell-free systems (CFSs) offer rapid, customizable biosensors for diverse applications. These synthetic biology tools are ideal for point-of-care diagnostics, especially in resource-limited settings.
Area of Science:
- Synthetic biology
- Biochemistry
- Biosensor technology
Background:
- Cell-free systems (CFSs) leverage in vitro transcription and translation for controlled biochemical environments.
- CFSs enable the development of modular and customizable biosensors without living cells.
- Applications span healthcare, environmental monitoring, agriculture, and food quality assurance.
Purpose of the Study:
- To provide an in-depth overview of cell-free biosensor design and functionality.
- To highlight various device formats and use cases for CFS-based biosensors.
- To discuss current limitations and future engineering solutions for CFS biosensing.
Main Methods:
- Design and construction of genetic circuits for CFS biosensors.
- Development of diverse signal output strategies.
- Integration of CFS technology into various device formats (paper-based, microfluidics, wearables).
Main Results:
- CFS biosensors demonstrate utility in pathogen detection and environmental contaminant monitoring.
- These biosensors are particularly valuable for point-of-care (POC) and low-resource diagnostics.
- Current limitations include shelf-life, sensitivity, and scalability challenges.
Conclusions:
- Engineering solutions like AI-assisted design and material integration are addressing CFS limitations.
- The integration of CFS biosensing with IoT and distributed fabrication promises advanced diagnostics.
- Cell-free biosensors represent a significant advancement in accessible and intelligent diagnostic tools.
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