High-throughput screening of biomolecules using cell-free systems.

Area of Science:

• Biochemistry
• Molecular Biology
• Synthetic Biology

Background:

• High-throughput screening (HTS) traditionally uses live cells but faces limitations like toxicity and metabolic interference.
• Cell-free systems (CFS) operate in vitro, bypassing cellular constraints for direct biomolecule expression from DNA/RNA.
• CFS offers a flexible and rapid alternative for evaluating large biomolecule libraries.

Purpose of the Study:

• To explore the principles, platforms, and applications of cell-free systems (CFS) in high-throughput screening (HTS).
• To highlight the transformative impact of CFS-based HTS on synthetic biology, drug discovery, diagnostics, and protein engineering.
• To discuss advancements and challenges in CFS-based HTS for next-generation biomolecular screening.

Main Methods:

• Utilizes various cell-free systems (E. coli, wheat germ, rabbit reticulocytes, PURE system).
• Integrates CFS with high-throughput platforms like microplates, droplet microfluidics, and paper-based devices.
• Employs analytical readouts such as fluorescence, luminescence, mass spectrometry, and digital PCR for detection.

Main Results:

• CFS-based HTS enables cost-effective, scalable, and multiplexed assays with real-time detection.
• Automation, machine learning, and AI-integrated platforms accelerate discovery and design processes.
• Innovations like lyophilized kits and artificial cells address challenges like reagent cost and post-translational modifications.

Conclusions:

• Cell-free systems (CFS) provide a flexible, rapid, and accessible approach for high-throughput screening (HTS).
• CFS-based HTS is crucial for advancing biomolecular screening, therapeutic development, and synthetic biology.
• Continued innovation in CFS platforms and integration with AI will further expand screening capabilities.