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Related Experiment Videos

LUCA-15-encoded sequence variants regulate CD95-mediated apoptosis.

L C Sutherland1, S E Edwards, H C Cable

  • 1School of Life Sciences, Keele University, Staffordshire, UK.

Oncogene
|August 19, 2000
PubMed
Summary
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Researchers discovered a novel gene fragment, Je2, that suppresses apoptosis. This fragment is an antisense transcript of the LUCA-15 gene, implicating LUCA-15 in controlling programmed cell death.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Genetics

Background:

  • Apoptosis, or programmed cell death, is a critical cellular process.
  • Dysregulation of apoptosis is implicated in various diseases, including cancer and autoimmune disorders.
  • Identifying novel genes that regulate apoptosis is crucial for understanding cellular homeostasis and disease pathogenesis.

Purpose of the Study:

  • To identify novel genes involved in the regulation of apoptosis using expression cloning.
  • To characterize a newly identified cDNA fragment, Je2, and its role in CD95-mediated apoptosis.
  • To investigate the function of the LUCA-15 gene locus in apoptosis control.

Main Methods:

  • Expression cloning system to identify apoptosis-related genes.
  • Transfection of Jurkat T cells with cDNA fragments.

Related Experiment Videos

  • Sequence homology analysis to map identified genes.
  • Analysis of splice variants and their expression.

    • Main Results:

    • A 326 bp cDNA fragment, Je2, was identified that suppresses CD95-mediated apoptosis in Jurkat T cells.
    • Je2 was mapped to an intronic region of the LUCA-15 locus and identified as an antisense transcript.
    • Overexpression of a LUCA-15 splice variant (Clone 26) inhibited Jurkat cell proliferation and sensitized cells to apoptosis.

    Conclusions:

    • The LUCA-15 gene locus plays a significant role in the regulation of apoptosis.
    • Antisense transcripts may be involved in modulating gene function and apoptosis.
    • This study provides new insights into the molecular mechanisms controlling programmed cell death.