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Related Concept Videos

Alternative RNA Splicing02:18

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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.
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A gene is a stretch of DNA that serves as the blueprint for functional RNAs and proteins. Since DNA is comprised  of nucleotides and proteins are comprised of amino acids, a mediator is required to convert the information encoded in DNA into proteins. This mediator is the messenger RNA (mRNA). mRNA copies the blueprint from DNA by a process called transcription. In eukaryotes, transcription occurs in the nucleus by complementary base-pairing with the DNA template. The mRNA is then...
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Detection of Alternative Splicing During Epithelial-Mesenchymal Transition
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Gene Expression Profiles Controlled by the Alternative Splicing Factor Nova2 in Endothelial Cells.

Elisa Belloni1, Anna Di Matteo1, Davide Pradella1

  • 1Istituto di Genetica Molecolare, "Luigi Luca Cavalli-Sforza", Consiglio Nazionale delle Ricerche, via Abbiategrasso 207, 27100 Pavia, Italy.

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|November 28, 2019
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Summary

Neuro-oncological ventral antigen 2 (Nova2) regulates vascular development by altering alternative splicing (AS) in endothelial cells. Nova2 controls splicing of key genes, impacting Ppar-γ and E2F1 pathways.

Keywords:
Nova2alternative splicingangiogenesispost-transcriptional regulationvascular development

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Area of Science:

  • Molecular Biology
  • Genomics
  • Cell Biology

Background:

  • Alternative splicing (AS) increases proteomic complexity and regulates cellular functions.
  • The role of AS in endothelial cell (EC) signaling and vascular development is not well understood.
  • Nova2 is a known regulator of AS involved in vascular morphogenesis.

Purpose of the Study:

  • To investigate how Nova2 influences AS programs in ECs.
  • To identify signaling pathways regulated by Nova2-mediated AS in ECs.
  • To elucidate the role of Nova2 in orchestrating vascular biology.

Main Methods:

  • RNA sequencing (RNA-seq) to analyze mRNA steady-state levels in ECs.
  • Bioinformatics analyses to identify enriched gene sets and transcription factor targets.
  • Analysis of AS profiles of specific genes, including Ppar-γ and Tfdp2.

Main Results:

  • Nova2 significantly altered mRNA levels in ECs, impacting vascular morphogenesis.
  • Bioinformatics identified enrichment for genes regulated by Ppar-γ and E2F1.
  • Nova2 controlled AS of Ppar-γ and Tfdp2, generating distinct protein isoforms.
  • Nova2 integrated splicing decisions to regulate Ppar-γ and E2F1 activities.

Conclusions:

  • Nova2 plays a crucial role in EC function and vascular development through AS.
  • Nova2 regulates vascular biology by controlling splicing of Ppar-γ and Tfdp2.
  • The findings reveal a mechanism by which Nova2 integrates splicing to modulate EC signaling pathways.