Simple-to-Operate Approach for Single Cell Analysis Using a Hydrophobic Surface and Nanosized Droplets

Area of Science:

• Biotechnology
• Genomics
• Cell Biology

Background:

• Single-cell analysis is vital for understanding cellular heterogeneity.
• Current high-throughput methods are unsuitable for analyzing rare cell populations due to high input cell requirements.

Purpose of the Study:

• To develop a cost-effective and reproducible method for rare single-cell analysis.
• To enable precise isolation and genetic material collection from rare cells for downstream analysis.

Main Methods:

• Utilized a highly hydrophobic surface and nanosized static droplets for single-cell isolation.
• Employed on-chip single-cell lysis and genetic material collection using micromanipulation or pipetting.
• Applied cytospin and static droplet array strategies for precise isolation of single cancer cells.
• Performed subsequent RNA analysis using droplet digital polymerase chain reaction (ddPCR) and real-time PCR.

Main Results:

• Demonstrated precise isolation of single cancer cells with high purity.
• Successfully collected genetic materials from isolated rare cells for downstream analysis.
• Validated the method's efficiency for subsequent RNA analysis.

Conclusions:

• The developed method offers a low-cost, reproducible approach for rare single-cell analysis.
• This technique facilitates the study of subcellular functional mechanisms and the identification of rare cells with pathogenic consequences.