Hand-held and integrated single-cell pipettes.

Area of Science:

• Biotechnology
• Cell Biology
• Microfluidics

Background:

• Single-cell isolation is crucial for subsequent analyses but conventional methods are often complex, inefficient, and reduce cell viability.
• Existing techniques struggle with isolating single cells into nanoliter volumes or selecting specific phenotypes, especially for adherent cells.

Purpose of the Study:

• To develop a rapid, simple, and efficient method for unbiased single-cell isolation.
• To create an integrated system for selective single-cell isolation based on visual characteristics.
• To facilitate downstream applications like PCR and cell culture.

Main Methods:

• Development of a hand-held single-cell pipet (hSCP) for unbiased isolation of suspended cells into nanoliter droplets.
• Development of an integrated single-cell pipet (iSCP) for selective isolation of suspended and adherent cells using fluorescence imaging and morphological features.
• Demonstration of seamless transfer of isolated single cells into standard laboratory consumables (e.g., 96-well plates).

Main Results:

• The hSCP enables rapid, operationally simple, and inexpensive isolation of single viable suspended cells without additional equipment.
• The iSCP successfully isolates single cells based on fluorescence and morphology, accommodating both suspended and adherent cell types.
• Isolated single cells are compatible with downstream applications such as cloning, PCR, and biochemical assays.

Conclusions:

• The developed hSCP and iSCP offer significant improvements over conventional single-cell isolation techniques.
• These novel tools provide efficient, versatile, and user-friendly solutions for single-cell isolation and downstream applications.
• The technology supports unbiased and selective single-cell isolation, enhancing cell biology research and diagnostics.