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Related Concept Videos

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Ribosome profiling or ribo-sequencing is a deep sequencing technique that produces a snapshot of active translation in a cell. It selectively sequences the mRNAs protected by ribosomes to get an insight into a cell’s translation landscape at any given point in time.
Applications of ribosome profiling
Ribosome profiling has many applications, including in vivo monitoring of translation inside a particular organ or tissue type and quantifying new protein synthesis levels.
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Related Experiment Video

Updated: Oct 2, 2025

High Throughput MicroRNA Profiling: Optimized Multiplex qRT-PCR at Nanoliter Scale on the Fluidigm Dynamic ArrayTM IFCs
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Spatially Resolved, Error-Robust Multiplexed MicroRNA Profiling in Single Living Cells.

Wei Wei1, Wenhao Dai1, Fan Yang1

  • 1Beijing Key Laboratory for Bioengineering and Sensing Technology, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, 30 Xueyuan Road, 100083, Beijing, China.

Angewandte Chemie (International Ed. in English)
|February 23, 2022
PubMed
Summary

This study introduces FluoELs, a novel method for simultaneously imaging multiple microRNAs (miRNAs) in living cells. This breakthrough enables accurate quantification and spatial resolution of miRNAs, aiding disease mechanism research.

Keywords:
Error CorrectionLiving Cell ImagingMicroRNA Multiplexed DetectionNanoparticlesSpatial Resolution

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Area of Science:

  • Biotechnology
  • Molecular Biology
  • Cell Biology

Background:

  • Simultaneous imaging of multiple microRNAs (miRNAs) in living cells is difficult due to limitations in spectrally distinct fluorophores and non-cytotoxic methods.
  • Existing techniques struggle with accurate quantification and spatial resolution of multiple miRNA targets within individual cells.

Purpose of the Study:

  • To develop a multiplexed, error-robust, and non-cytotoxic method for simultaneous miRNA imaging in living cells.
  • To enable accurate quantification and spatial resolution of multiple miRNAs for single-cell analysis.

Main Methods:

  • Development of fluorophores encoded error-corrected labels (FluoELs) using core-shell silica nanoparticles.
  • FluoELs utilize proportional dual fluorophores for encoding and a constant single fluorophore for error-corrected quantification.
  • Modification of nanoparticles with molecular beacon probes for miRNA detection.

Main Results:

  • FluoELs demonstrated low cytotoxicity in living cells.
  • Accurate quantification and spatial resolution of nine breast-cancer-related miRNAs were achieved.
  • The method allowed for the evaluation of miRNA coordination and expression profiles.

Conclusions:

  • FluoELs provide a robust platform for multiplexed miRNA imaging with error-correction capabilities.
  • This technology facilitates single-cell analysis of miRNA expression profiles and disease-associated molecular mechanisms.
  • FluoELs represent a significant advancement in cellular miRNA research and diagnostics.