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Related Experiment Video

Updated: Jun 24, 2025

Single-cell RNA Sequencing of Fluorescently Labeled Mouse Neurons Using Manual Sorting and Double In Vitro Transcription with Absolute Counts Sequencing DIVA-Seq
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Deep Transcriptomics Reveals Cell-Specific Isoforms of Pan-Neuronal Genes.

Zachery Wolfe1, David Liska2, Adam Norris3

  • 1Department of Biological Sciences, Southern Methodist University, Dallas, TX 75205, United States.

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|June 3, 2024
PubMed
Summary

This study maps splicing patterns in single neurons of C. elegans, revealing cell-specific variants and differential intron retention. It identifies RNA-binding proteins regulating these unique splicing patterns for better understanding of neural molecular diversity.

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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Genomics

Background:

  • Single-cell RNA sequencing (scRNA-Seq) is crucial for understanding nervous system molecular diversity.
  • Profiling alternative splicing in single neurons is challenging due to low sensitivity and capture efficiency.
  • Splicing patterns and regulation across neurons remain less understood than gene expression.

Purpose of the Study:

  • To investigate deep cell-specific transcriptomes in C. elegans neurons, focusing on alternative splicing.
  • To enable high-confidence assessment of splicing across neuron types, even for lowly-expressed genes.
  • To develop methods for identifying cell-specific isoforms and regulatory RNA-binding proteins.

Main Methods:

  • Leveraging the C. elegans nervous system and CeNGEN consortium data for biological replicates.
  • Generating global splicing maps to analyze neuron-type-specific splicing patterns.
  • Developing and applying an algorithm to identify cell-specific expression patterns and regulatory factors.
  • Performing in vivo genetic interrogation of identified RNA-binding proteins.
  • Developing a platform for spatial transcriptomic visualization of splicing patterns.

Main Results:

  • Discovery of pan-neuronal genes with cell-specific splice variants.
  • Identification of abundant differential intron retention across different neuron types.
  • Characterization of a single neuron with enrichment for upstream alternative 3' splice sites.
  • Identification of novel RNA-binding proteins that establish cell-specific splicing patterns.
  • Validation of three distinct regulatory factors controlling unique splicing in a single neuron.

Conclusions:

  • The study provides comprehensive splicing maps for C. elegans neurons, highlighting significant cell-specific variations.
  • Novel regulatory RNA-binding proteins and their roles in establishing neuron-specific splicing patterns were identified.
  • A new platform for visualizing spatial transcriptomics with single-neuron resolution was developed, aiding future research.