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Updated: Dec 21, 2025
An Ultrahigh-throughput Microfluidic Platform for Single-cell Genome Sequencing
Published on: May 23, 2018
A Highly Sensitive, Accurate, and Automated Single-Cell RNA Sequencing Platform with Digital Microfluidics
Xing Xu1, Qianqian Zhang1, Jia Song2
1State Key Laboratory of Physical Chemistry of Solid Surfaces, The MOE Key Laboratory of Spectrochemical Analysis & Instrumentation, the Key Laboratory of Chemical Biology of Fujian Province, Collaborative Innovation Center of Chemistry for Energy Materials, Department of Chemical Biology, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P.R. China.
Digital microfluidics enables simple, efficient, and low-cost single-cell mRNA measurements. This digital-RNA-seq platform automates fluid handling for precise gene detection and cell analysis, overcoming limitations of conventional methods.
Area of Science:
- Molecular Biology
- Biotechnology
- Microfluidics
Background:
- Single-cell RNA sequencing (scRNA-seq) is crucial for understanding cellular heterogeneity.
- Conventional scRNA-seq methods are labor-intensive, inefficient, and prone to contamination.
- Limitations exist in current single-cell isolation techniques regarding efficiency, integrity, selectivity, and flexibility.
Purpose of the Study:
- To develop a simplified, efficient, and cost-effective method for single-cell mRNA measurements.
- To introduce a novel digital microfluidics-based platform for scRNA-seq.
- To overcome the challenges associated with traditional scRNA-seq protocols.
Main Methods:
- Implementation of a digital microfluidics platform for automated fluid handling in discrete droplets.
- Development of a passive dispensing method using hydrophilic-hydrophobic microfeatures for rapid single-cell subdroplet generation.
- Utilization of nanoliter reaction volumes and hydrophobic interfaces for enhanced cDNA synthesis and amplification.
Main Results:
- Digital-RNA-seq demonstrates high sensitivity in gene detection through optimized reaction conditions.
- The platform ensures accurate measurements via stable droplet handling and an oil-closed reaction environment.
- Successful quantification of single-cell heterogeneity, including rare transcript detection and cell type differentiation.
Conclusions:
- Digital-RNA-seq offers an automated, sensitive, and accurate platform for single-cell mRNA analysis.
- The proposed passive dispensing method improves single-cell isolation efficiency and flexibility.
- This technology holds significant promise for diverse biological applications requiring precise single-cell profiling.
