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Updated: Jan 27, 2026

High Throughput MicroRNA Profiling: Optimized Multiplex qRT-PCR at Nanoliter Scale on the Fluidigm Dynamic ArrayTM IFCs
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Multiplexed PCR-Free Detection of MicroRNAs in Single Cancer Cells Using a DNA-Barcoded Microtrough Array Chip.

Nayi Wang1, Yao Lu2, Zhuo Chen3

  • 1Department of Biomedical Engineering, Yale University, New Haven, CT 06520, USA. wangnayi@gmail.com.

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|April 3, 2019
PubMed
Summary
This summary is machine-generated.

This study introduces a novel microtrough chip for high-throughput, single-cell microRNA detection. This method enables direct measurement of microRNA profiles for cancer diagnosis and monitoring.

Keywords:
DNA barcodingmicroRNAmicrotrough arrayssingle-cell analysis

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Area of Science:

  • Molecular Biology
  • Genomics
  • Biotechnology

Background:

  • MicroRNAs regulate gene expression and are crucial in diseases like cancer.
  • High-throughput single-cell microRNA profiling is vital for understanding tumor heterogeneity and developing diagnostics.

Purpose of the Study:

  • To develop a high-throughput, multiplexed method for single-cell microRNA detection.
  • To enable direct measurement of microRNA profiles without PCR amplification.

Main Methods:

  • An in situ hybridization barcoding workflow was implemented on a sub-nanoliter microtrough array chip.
  • Single cells were encapsulated, fixed, permeabilized, and incubated with microRNA detection probes.
  • Reporter strands released after photocleavage were detected using DNA barcodes.

Main Results:

  • The workflow achieved high-throughput and multiplexed detection of microRNAs at the single-cell level.
  • Direct microRNA measurement was possible due to the sub-nanoliter volumes, bypassing PCR amplification.
  • The method allows for the evaluation of microRNA heterogeneity within single cells.

Conclusions:

  • This microtrough array chip offers a new approach for single-cell microRNA analysis.
  • The technology supports microRNA-based diagnosis and monitoring of complex human diseases, including cancers.
  • It facilitates the interrogation of microRNA-mediated intratumor heterogeneity.