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Related Experiment Videos

Alternative splicing increases complexity of stem cell transcriptome.

Ihor R Lemischka1, Moshe Pritsker

  • 1Department of Molecular Biology, Princeton University, Princeton, New Jersey 08544, USA. ilemischka@molbio.princeton.edu

Cell Cycle (Georgetown, Tex.)
|February 16, 2006
PubMed
Summary

Alternative splicing significantly impacts stem cell biology, affecting thousands of genes in embryonic and hematopoietic stem cells. This process, particularly in tissue-specific genes, offers new avenues for understanding stem cell therapies.

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Area of Science:

  • Stem cell biology
  • Molecular biology
  • Genomics

Background:

  • Stem cell therapies require understanding stem cell properties.
  • Microarray studies identified activated genes but not post-transcriptional modifications.
  • The role of alternative splicing in stem cell transcriptomes was largely undetermined.

Purpose of the Study:

  • To investigate the extent of alternative splicing in stem cell transcriptomes.
  • To identify mechanisms regulating alternative splicing in stem cells.
  • To discuss the implications of alternative splicing for stem cell biology and therapies.

Main Methods:

  • Combined computational and experimental analyses.
  • Analysis of gene expression in hematopoietic and embryonic stem cells.

Related Experiment Videos

  • Identification of alternative splicing events and regulatory mechanisms.

    • Main Results:

    • Thousands of genes in stem cells undergo alternative splicing.
    • Alternative splicing is more frequent in tissue-specific genes than ubiquitous genes.
    • Negative regulation of splicing sites is a common mechanism for generating splice variants.
    • Alternative splicing is not conserved between human and mouse orthologous genes.

    Conclusions:

    • Alternative splicing plays a significant role in stem cell biology.
    • Understanding alternative splicing is crucial for developing stem cell-based therapies.
    • Genome-wide identification of splice variants is a key future direction.