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Related Concept Videos

Alternative RNA Splicing02:18

Alternative RNA Splicing

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Alternative RNA splicing is the regulated splicing of exons and introns to produce different mature mRNAs from a single pre-mRNA. Unlike in constitutive splicing where a single gene produces a single type of mRNA, alternative splicing allows an organism to produce multiple proteins from a single gene and plays an important role in protein diversity.
There are five types of alternative RNA splicing that vary in the ways the pre-mRNA segments are removed or retained in the mature mRNA. The first...
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RNA Splicing01:32

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Splicing is the process by which eukaryotic RNA is edited before its translation into protein. The RNA strand transcribed from eukaryotic DNA is called the primary transcript. The primary transcripts that become mRNAs are called precursor messenger RNAs (pre-mRNAs). Eukaryotic pre-mRNA contains alternating sequences of exons and introns. Exons are nucleotide sequences that code for proteins, whereas introns are the non-coding regions. In RNA splicing, introns are removed and exons are bonded...
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RNA-seq03:21

RNA-seq

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RNA sequencing, or RNA-Seq, is a high-throughput sequencing technology used to study the transcriptome of a cell. Transcriptomics helps to interpret the functional elements of a genome and identify the molecular constituents of an organism. Additionally, it also helps in understanding the development of an organism and the occurrence of diseases. 
Before the discovery of RNA-seq, microarray-based methods and Sanger sequencing were used for transcriptome analysis. However, while...
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Mining alternative splicing patterns in scRNA-seq data using scASfind.

Yuyao Song1,2, Guillermo Parada1,3, Jimmy Tsz Hang Lee1

  • 1Wellcome Sanger Institute, Hinxton, CB10 1SA, UK.

Genome Biology
|July 29, 2024
PubMed
Summary
This summary is machine-generated.

We developed scASfind, a new computational tool for analyzing cell type-specific alternative splicing events from single-cell RNA sequencing data. This method enables the discovery of novel splicing patterns across different cell types.

Keywords:
Alternative splicingCell type-specific eventsSingle cell RNA-seq

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Area of Science:

  • Genomics
  • Computational Biology
  • Molecular Biology

Background:

  • Single-cell RNA sequencing (scRNA-seq) is a powerful tool for transcriptome profiling.
  • Current scRNA-seq analyses primarily focus on gene-level expression, overlooking alternative splicing events.
  • Understanding alternative splicing is crucial for cell type characterization and function.

Purpose of the Study:

  • To introduce scASfind, a novel computational method for quantitative analysis of alternative splicing in scRNA-seq data.
  • To enable the identification of cell type-specific splicing events using full-length scRNA-seq data.
  • To facilitate the discovery of novel splicing patterns and biomarkers.

Main Methods:

  • Developed scASfind, a computational tool utilizing an efficient data structure.
  • Implemented quantitative analysis of percent spliced-in (PSI) values for splicing events.
  • Applied scASfind to full-length scRNA-seq data for comprehensive splicing analysis.

Main Results:

  • scASfind enables exhaustive searching of differential splicing events.
  • Identified marker splicing events specific to particular cell types.
  • Discovered mutually exclusive splicing events and those involving large exon blocks within cell types.

Conclusions:

  • scASfind provides a robust method for analyzing cell type-specific alternative splicing.
  • The tool enhances the understanding of cellular heterogeneity through splicing variations.
  • Facilitates the discovery of novel splicing-related biomarkers for cell identification and function.