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Related Concept Videos

RNA Splicing01:32

RNA Splicing

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...
RNA Splicing01:32

RNA Splicing

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...
General Transcription Factors01:30

General Transcription Factors

Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...
Alternative RNA Splicing02:18

Alternative RNA Splicing

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...
Alternative RNA Splicing02:18

Alternative RNA Splicing

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...
Transcription Factors02:16

Transcription Factors

Tissue-specific transcription factors contribute to diverse cellular functions in mammals. For example, the gene for beta globin, a major component of hemoglobin, is present in all cells of the body. However, it is only expressed in red blood cells because the transcription factors that can bind to the promoter sequences of the beta globin gene are only expressed in these cells. Tissue-specific transcription factors also ensure that mutations in these factors may impair only the function of...

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Identification of Alternative Splicing and Polyadenylation in RNA-seq Data
08:35

Identification of Alternative Splicing and Polyadenylation in RNA-seq Data

Published on: June 24, 2021

Tissue-specific splicing factor gene expression signatures.

Ana Rita Grosso1, Anita Q Gomes, Nuno L Barbosa-Morais

  • 1Instituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisboa, Portugal.

Nucleic Acids Research
|July 26, 2008
PubMed
Summary
This summary is machine-generated.

Tissue-specific alternative splicing patterns are linked to distinct splicing factor gene expression signatures. Brain and testis tissues exhibit the most differential expression, highlighting key regulatory roles.

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Area of Science:

  • Molecular Biology
  • Genomics
  • Bioinformatics

Background:

  • Alternative splicing regulation in multicellular organisms is complex and not fully understood.
  • Tissue-specific splicing decisions are hypothesized to depend on protein concentration and activity.
  • Systematic, large-scale data for studying splicing regulation is a recent development.

Purpose of the Study:

  • To identify splicing factor gene expression signatures reflecting tissue-specific alternative splicing patterns.
  • To computationally analyze gene expression profiles of splicing factors across species.
  • To investigate the relationship between differential gene expression and alternative splicing.

Main Methods:

  • Computational analysis of microarray-based gene expression profiles.
  • Analysis of splicing factor gene expression in mouse, chimpanzee, and human tissues.
  • Identification of differentially expressed splicing factor genes in specific tissues.

Main Results:

  • Splicing factor gene expression signatures correlate with cell type and tissue-specific alternative splicing.
  • Brain and testis tissues, with high alternative splicing, show the most differentially expressed splicing factor genes.
  • SR protein kinases and small nuclear ribonucleoprotein particle (snRNP) proteins were identified as highly differentially expressed.

Conclusions:

  • Splicing factor gene expression signatures provide insights into tissue-specific alternative splicing regulation.
  • Computational signature-based predictions are a powerful initial approach for global analysis.
  • Differential expression of splicing factors plays a crucial role in tissue-specific transcriptome regulation.