Droplet-Array (DA) Sandwich Chip: A Versatile Platform for High-Throughput Cell Screening Based on...

Area of Science:

• Biotechnology
• Microfluidics
• Cell Biology

Background:

• High-throughput screening (HTS) is crucial for drug discovery and biological research.
• Existing HTS platforms often require large reagent volumes and complex procedures.
• Miniaturization offers a path to more efficient and cost-effective screening.

Purpose of the Study:

• To introduce and characterize a novel droplet-array (DA) sandwich chip for cell-based HTS.
• To demonstrate the capabilities of the DA sandwich chip for efficient cell seeding and screening.
• To evaluate the reagent consumption of the DA sandwich chip compared to conventional methods.

Main Methods:

• Fabrication of a DA sandwich chip utilizing a superhydrophobic-superhydrophilic patterned glass slide.
• Development of a one-step cell seeding protocol compatible with the DA chip.
• Simultaneous formation of thousands of microdroplets containing cells on the chip.
• Comparison of reagent consumption between the DA chip and a standard 96-well plate.

Main Results:

• The DA sandwich chip successfully forms thousands of simultaneous microdroplets containing cells.
• One-step cell seeding and simultaneous screening initiation were achieved.
• The DA chip demonstrated a 1000-fold reduction in reagent consumption compared to a 96-well plate.
• The platform is suitable for miniaturized, high-throughput cell-based assays.

Conclusions:

• The droplet-array sandwich chip represents a significant advancement in miniaturized HTS platforms.
• This technology offers substantial benefits in terms of efficiency and reagent conservation.
• The DA chip has strong potential for applications in drug discovery and biological research requiring large-scale cell screening.