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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

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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What is Gene Expression?01:36

What is Gene Expression?

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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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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.
The chromatin structure, especially...
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Regulation of Expression at Multiple Steps01:23

Regulation of Expression at Multiple Steps

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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 Regulators02:23

Master Transcription Regulators

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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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Related Experiment Video

Updated: May 9, 2025

Detection of Alternative Splicing During Epithelial-Mesenchymal Transition
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Detection of Alternative Splicing During Epithelial-Mesenchymal Transition

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MRAS: Master Regulator Analysis of Alternative Splicing.

Lei Zhou1,2,3, Yue Huang1,2,3, Yang Zhao1,2

  • 1China National Center for Bioinformation, Beijing, 100101, China.

Advanced Science (Weinheim, Baden-Wurttemberg, Germany)
|May 5, 2025
PubMed
Summary
This summary is machine-generated.

A new computational method, Master Regulator analysis of Alternative Splicing (MRAS), identifies key splicing factors driving cancer. This tool aids in understanding splicing dysregulation and its role in tumor development and variability.

Keywords:
RNA binding proteinalternative splicingmaster regulator analysissplicing regulatory network

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Related Experiment Videos

Last Updated: May 9, 2025

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Identification of Alternative Splicing and Polyadenylation in RNA-seq Data
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Identification of Alternative Splicing and Polyadenylation in RNA-seq Data

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Area of Science:

  • Molecular Biology
  • Computational Biology
  • Oncology

Background:

  • Splicing dysregulation is a hallmark of cancer, often driven by genetic mutations and altered splicing factors.
  • Despite its prevalence, identifying key regulatory splicing factors in solid tumors remains challenging.
  • Abnormal splicing factor expression contributes to tumor initiation, progression, metastasis, and treatment resistance.

Purpose of the Study:

  • To introduce MRAS (Master Regulator analysis of Alternative Splicing), a computational method for identifying pivotal splicing factors.
  • To demonstrate MRAS's capability in pinpointing master splicing regulators that shape splicing networks and influence cellular processes.
  • To uncover cell-type specific splicing programs and regulatory relationships.

Main Methods:

  • Development of MRAS, a computational approach for analyzing alternative splicing data.
  • Application of MRAS to identify master splicing regulators across various cancer phenotypes.
  • Utilizing MRAS on single-cell RNA-seq data to reveal cell-type specific splicing regulation.

Main Results:

  • MRAS successfully identified master splicing regulators linked to diverse cancer phenotypes, including initiation, progression, metastasis, and treatment resistance.
  • The analysis uncovered critical regulatory relationships governing cell-type specific splicing programs.
  • MRAS demonstrated accuracy and versatility in dissecting splicing regulatory mechanisms.

Conclusions:

  • MRAS provides an efficient and accurate method for identifying key splicing factors in cancer.
  • The tool facilitates a deeper understanding of the molecular mechanisms underlying splicing dysregulation in tumorigenesis.
  • MRAS is a versatile approach for unraveling complex splicing regulatory networks in both bulk and single-cell data.