Cited by 69Cell death mechanisms and regulationCell Adhesion Molecules ResearchCancer-related Molecular Pathways

Apoptosis protection and survival signal by the CD53 tetraspanin antigen

Yunta, Mónica, Lazo, Pedro A·2003·Oncogene

Abstract

The CD53 antigen is a tetraspanin protein of the lymphoid-myeloid lineage, but its implication in biological effects is hardly known. Radioresistant tumor cells express very high levels of this antigen. We have studied the effect of CD53 antigen ligation on the survival response of tumor cells to serum deprivation, a well-known stimulator of cell death that may mimic the tumor environment; for this aim IR938F and Jurkat cells, a B- and T-cell lymphoma, were used. Ligation of CD53 triggers a survival response and reduces the number of cells that enter apoptosis. In CD53- stimulated cells there is a significant reduction in caspase activation, measured by caspase processing of poly ADP-ribose polymerase, as well as a reduction in the fragmentation of DNA. CD53- stimulated cells also have an increase in the level of bcl-X(L) and a reduction of bax protein, two components of the mitochondrial apoptotic pathway, changing their ratio by 24-fold in the direction of survival. This survival signal appears to be mediated by activation of the AKT, as detected by its phosphorylation in Ser473 upon CD53 ligation. The CD53 antigen interactions might contribute to cell survival in poorly vascularized regions of the tumor mass.

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Crossref · 10.1038/sj.onc.1206183

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Authors
Yunta, M., & Lazo, P. A.
Affiliations
Consejo Superior de Investigaciones Científicas (ES)
Corresponding author
Lazo, Pedro A
Venue
Oncogene
Published
2003-02-27
Volume
22
Issue
8
Pages
1219-1224
ISSN
  • 0950-9232 (ISSN-L)
  • 1476-5594
OpenAlex
W1972426382
Cited by
69
References
43
Citations by year
2026: 1 · 2025: 1 · 2024: 3 · 2023: 2 · 2022: 2 · 2021: 1 · 2020: 8 · 2019: 2 · 2018: 4 · 2017: 3 · 2016: 2 · 2015: 2 · 2014: 1 · 2013: 4 · 2012: 3
FWCI
1.25
Type
journal article
Language
en
Open access
closed
Locations
  • Oncogene (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Cell death mechanisms and regulation
  • Health Sciences › Medicine › Immunology and Allergy › Cell Adhesion Molecules Research
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
Keywords
CD53, tetraspanins, apoptosis, cell survival signaling, serum deprivation, caspase activation, Bcl-xL, Bax, mitochondrial apoptosis, Akt phosphorylation, lymphoma cells, tumor hypoxia
MeSH terms
Animals, Antibodies, Monoclonal, Antigens, Differentiation, T-Lymphocyte, Cell Survival, Cysteine Endopeptidases, Enzyme Activation, Humans, Neoplasm Proteins, Phosphorylation, Poly(ADP-ribose) Polymerases, Protein Processing, Post-Translational, Proto-Oncogene Proteins, Tumor Cells, Cultured, Antigens, CD, Gene Expression Regulation, Neoplastic, Gene Expression Regulation, Leukemic, Lymphoma, B-Cell, Culture Media, Serum-Free, Apoptosis, Protein Serine-Threonine Kinases, Jurkat Cells, Proto-Oncogene Proteins c-bcl-2, bcl-X Protein, bcl-2-Associated X Protein, Proto-Oncogene Proteins c-akt, Rats, DNA Fragmentation, Tetraspanin 25

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