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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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Alternative RNA Splicing02:18

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RNA Splicing01:32

RNA Splicing

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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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Nonsense-mediated mRNA Decay02:27

Nonsense-mediated mRNA Decay

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The Upf proteins that carry out nonsense-mediated decay (NMD) are found in all eukaryotic organisms, including humans. Each protein has an individual role, but they need to work in collaboration. Upf1 is an ATP-dependent RNA helicase that unwinds the RNA helix. Because Upf1 can unwind any RNA, Upf2 and Upf3 are required to help Upf1 discriminate between nonsense and normal mRNAs.
Usually, Upf3 binds to an Exon Junction Complex (EJC) at mRNA splice sites. If a ribosome fully translates the mRNA,...
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Cell Specific Gene Expression01:58

Cell Specific Gene Expression

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Multicellular organisms contain a variety of structurally and functionally distinct cell types, but the DNA in all the cells originated from the same parent cells. The differences in the cells can be attributed to the differential gene expression. Liver cells, whose functions include detoxification of blood, production of bile to metabolize fats, and synthesis of proteins essential for metabolism, must express a specific set of genes to perform their functions. Gene expression also varies with...
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Chromatin Structure and RNA Splicing02:41

Chromatin Structure and RNA Splicing

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Related Experiment Video

Updated: Feb 4, 2026

Differentiation of Mouse Embryonic Stem Cells into Cortical Interneuron Precursors
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Differentiation of Mouse Embryonic Stem Cells into Cortical Interneuron Precursors

Published on: December 3, 2017

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Rbfox1 Mediates Cell-type-Specific Splicing in Cortical Interneurons.

Brie Wamsley1, Xavier Hubert Jaglin1, Emilia Favuzzi2

  • 1NYU Neuroscience Institute and the Department of Neuroscience and Physiology, Smilow Research Center, New York University School of Medicine, 522 First Avenue, New York, NY 10016, USA; Department of Neurobiology, Harvard Medical School, 220 Longwood Avenue, Boston, MA 02115, USA.

Neuron
|October 16, 2018
PubMed
Summary

Alternative splicing, regulated by Rbfox1, shapes how different cortical interneurons connect to the brain. This process tailors messenger RNA (mRNA) for specific interneuron types, influencing their circuit integration during development.

Keywords:
ASDRbfox1alternative splicingconnectivityinterneuronneurodevelopmentsynapse

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Subtype-selective Electroporation of Cortical Interneurons
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Subtype-selective Electroporation of Cortical Interneurons
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Area of Science:

  • Neuroscience
  • Molecular Biology
  • Developmental Biology

Background:

  • Cortical interneurons exhibit significant diversity in form, function, and connections.
  • Understanding the molecular basis of this interneuron heterogeneity is crucial for comprehending brain development and function.

Purpose of the Study:

  • To investigate the molecular mechanisms, specifically alternative splicing, that drive interneuron diversity.
  • To elucidate the role of the splicing regulator Rbfox1 in cell-type-specific circuit integration of interneurons.

Main Methods:

  • Analysis of alternative splicing patterns in different interneuron subtypes.
  • Investigating the function of Rbfox1 in regulating mRNA tailoring for specific interneurons.
  • Examining the impact of Rbfox1 on the efferent connectivity of interneuron subtypes.

Main Results:

  • Alternative splicing differentially regulates the integration of somatostatin- and parvalbumin-expressing interneurons.
  • The activity-dependent splicing regulator Rbfox1 plays a key role in establishing subtype-specific efferent connectivity.
  • Rbfox1 mediates distinct alternative splicing programs in two related classes of interneurons.

Conclusions:

  • Alternative splicing is a critical mechanism for generating interneuron diversity and ensuring proper circuit formation.
  • Rbfox1 is essential for cell-type-specific mRNA tailoring, thereby controlling the connectivity of distinct interneuron populations.
  • This study highlights how Rbfox1-mediated splicing programs contribute to the functional specialization of cortical interneurons.