Sealable capped nanovials for high-throughput screening of cell growth and function

Area of Science:

• Biotechnology
• Single-cell biology
• Synthetic biology

Background:

• Scalable biological discovery requires advanced tools for isolating single-cell data.
• Current methods for cell compartmentalization can be complex and lack accessibility.

Purpose of the Study:

• To introduce capped nanovials, a versatile system for culturing, analyzing, and sorting single cells and small colonies.
• To demonstrate the utility of capped nanovials in enhancing single-cell secretion assays and co-culture applications.

Main Methods:

• Development of a two-particle architecture: bowl-shaped nanovials and hydrogel capping particles.
• Demonstration of compartment formation via simple pipetting and centrifugation.
• Compatibility with standard laboratory workflows including microscopy and flow cytometry.

Main Results:

• Successful compartmentalization and growth of mammalian, bacterial, and yeast cells.
• Enhanced signal-to-noise ratios in single-cell secretion assays due to reduced molecular crosstalk.
• High-purity selection (>100%) of antibody-secreting cells in functional co-culture assays (signal-to-noise ratio >30).

Conclusions:

• Capped nanovials offer a scalable and democratized approach to single-cell analysis.
• This technology bridges the gap between standard lab procedures and high-resolution microfluidic methods.
• Capped nanovials represent a new class of accessible tools for modern single-cell biology research.