LUCA-15 suppresses CD95-mediated apoptosis in Jurkat T cells

Leslie C. Sutherland, Michael Lerman, Gwyn T. Williams, Barbara A. Miller

Research output: Contribution to journalArticlepeer-review

33 Scopus citations

Abstract

The candidate tumour suppressor gene, LUCA-15, maps to the lung cancer tumour suppressor locus 3p21.3. Overexpression of an alternative RNA splice variant of LUCA-15 has been shown to retard human Jurkat T cell proliferation and to accelerate CD95-mediated apoptosis. An antisense cDNA to the 3′-UTR of this splice variant was able to suppress CD95-mediated apoptosis. Here, we report that overexpression of LUCA-15 itself suppresses CD95-mediated apoptosis in Jurkat cells. This suppression occurs prior to the final execution stage of the CD95 signalling pathway, and is associated with upregulation of the apoptosis inhibitory protein Bcl-2. LUCA-15 overexpression is also able to inhibit apoptosis induced by the protein kinase inhibitor staurosporine, but is not able to significantly suppress apoptosis mediated by the topoisomerase II inhibitor etoposide. These findings suggest that LUCA-15 is a selective inhibitor of cell death, and confirm the importance of the LUCA-15 genetic locus in the control of apoptosis.

Original languageEnglish (US)
Pages (from-to)2713-2719
Number of pages7
JournalOncogene
Volume20
Issue number21
DOIs
StatePublished - May 10 2001

All Science Journal Classification (ASJC) codes

  • Molecular Biology
  • Genetics
  • Cancer Research

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