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Related Concept Videos

Chromatin Structure Regulates pre-mRNA Processing02:41

Chromatin Structure Regulates pre-mRNA Processing

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In eukaryotic cells, nascent mRNA transcripts need to undergo many post-transcriptional modifications to reach the cell cytoplasm and translate into functional proteins. For a long time, transcription and pre-mRNA processing were considered two independent events that occur sequentially in the cell. However, it has now been well established that transcription and pre-mRNA processing are two simultaneous processes that are precisely regulated inside the cell.
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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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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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The gene expression in cells is regulated at different stages: (i) transcription, (ii) RNA processing, (iii) RNA localization, and (iv) translation. Transcriptional regulation is mediated by regulatory proteins such as transcription factors, activators, or repressors—these control gene expression by initiating or inhibiting the transcription of genes. Once a precursor or pre-mRNA is produced, it undergoes post-transcriptional modification, including 5' capping, splicing, and the...
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Master transcription regulators are regulatory proteins that are predominantly responsible for regulating the expression of multiple genes. Often these genes work in concert to drive a  complex process. Activation of a master transcription regulator can lead to a cascade of transcriptional activation necessary for that outcome. These regulators can directly bind to the regulatory sequences of the various genes involved, or they can indirectly regulate transcription by binding to regulatory...
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Updated: Jun 28, 2025

Using the E1A Minigene Tool to Study mRNA Splicing Changes
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SRRM2 splicing factor modulates cell fate in early development.

Silvia Carvalho1,2,3,4,5, Luna Zea-Redondo1,6, Tsz Ching Chloe Tang1

  • 1Max-Delbrück-Center for Molecular Medicine in the Helmholtz Association (MDC), Berlin Institute for Medical Systems Biology (BIMSB), Epigenetic Regulation and Chromatin Structure Group, 10115 Berlin, Germany.

Biology Open
|April 24, 2024
PubMed
Summary
This summary is machine-generated.

The splicing factor Srrm2 is crucial for maintaining embryonic stem cell identity and pluripotency. Its dosage affects gene expression, impacting stemness and lineage commitment in early development.

Keywords:
PluripotencySRm300Single-cell transcriptomicsSplicingSrrm2Stemness

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Area of Science:

  • Developmental Biology
  • Molecular Biology
  • Genetics

Background:

  • Embryo development requires precise gene expression regulation for cell differentiation.
  • The splicing factor Srrm2's role in early mammalian development is largely unknown.
  • Srrm2 has been linked to developmental disorders and diseases.

Purpose of the Study:

  • To investigate the role of Srrm2 dosage in early mammalian development.
  • To understand Srrm2's function in maintaining embryonic stem cell pluripotency and identity.

Main Methods:

  • Studied Srrm2 heterozygosity in embryonic stem cells.
  • Utilized RNA interference (RNAi) for Srrm2 depletion.
  • Analyzed gene expression changes and alternative splicing events.

Main Results:

  • Srrm2 dosage is critical for embryonic stem cell pluripotency and identity.
  • Srrm2 heterozygosity leads to loss of stemness and altered pluripotency markers.
  • Early effects include alternative splicing of specific genes, followed by metabolic and differentiation gene expression changes.

Conclusions:

  • Srrm2 plays vital molecular and cellular roles in stemness and lineage commitment.
  • Splicing regulators like Srrm2 are important in embryogenesis, developmental diseases, and tumorigenesis.