Cited by 80Cancer-related Molecular PathwaysLymphoma Diagnosis and TreatmentChronic Lymphocytic Leukemia Research

Overexpression of the MDM2 Oncogene in Leukemia and Lymphoma

Watanabe, Takashi, Ichikawa, Atsushi, Saito, Hidehiko, Hotta, Tomomitsu·1996·Leukemia & Lymphoma

Abstract

A cellular phosphoprotein that binds to and inactivates p53 has recently been identified as a product of the oncogene MDM2. Amplification of the MDM2 gene was found in more than a third of sarcomas and in a subset of malignant gliomas. Despite the absence of amplification, the MDM2 gene was overexpressed in some types of leukemias and lymphomas. Overexpression was significantly more frequent in the low-grade type of B-cell non-Hodgkin's lymphoma (B-NHL) than in the intermediate/high grade types of lymphoma and the overexpression was also significantly more frequent in the advanced rather than the earlier stages of B-cell chronic lymphocytic leukemia (B-CLL) and B-NHL. This suggests that MDM2 could play a role, via the p53 pathway, in tumorigenicity and/or in disease progression in some hematological malignancies. However, in the light of our findings that, in a few cases, both the overexpression of MDM2 and mutant-type p53 was seen, it is possible that MDM2 overexpression may also promote neoplastic growth by mechanisms other than inactivation of the p53 protein.

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Crossref · 10.3109/10428199609093436

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51 of 51 references verified0 citation errors · 0 not checkable

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  • Mdm2 overexpression due to amplification or other mechanisms has been detected in patients with a variety of human cancers that also harbor mutant p53 or lack p53.

    “Mdm2 overexpression due to amplification or other mechanisms has been detected in patients with a variety of human cancers that also harbor mutant p53 or lack p53 (12, 51).”

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Authors
Watanabe, T., Ichikawa, A., Saito, H., & Hotta, T.
Affiliations
Nagoya University Hospital (JP)
Venue
Leukemia & Lymphoma
Published
1996-01
Volume
21
Issue
5-6
Pages
391-397
ISSN
  • 1026-8022 (ISSN-L)
  • 1042-8194
  • 1029-2403
OpenAlex
W2037076884
Cited by
80
References
49
Citations by year
2026: 1 · 2025: 3 · 2023: 2 · 2022: 2 · 2021: 1 · 2020: 3 · 2019: 4 · 2017: 2 · 2016: 2 · 2015: 3 · 2014: 5 · 2013: 2 · 2012: 5
FWCI
1.20
Type
journal article
Language
en
Open access
closed
Locations
  • Leukemia & lymphoma/Leukemia and lymphoma (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Health Sciences › Medicine › Oncology › Cancer-related Molecular Pathways
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Lymphoma Diagnosis and Treatment
  • Health Sciences › Medicine › Genetics › Chronic Lymphocytic Leukemia Research
Keywords
gene overexpression, p53 inactivation, B-cell non-Hodgkin lymphoma, chronic lymphocytic leukemia, hematologic malignancies, lymphoma progression, mutant p53, tumor suppressor pathways
MeSH terms
Animals, Gene Amplification, Humans, Leukemia, Lymphoma, Neoplasm Proteins, Neoplasms, Nuclear Proteins, Oncogenes, Proto-Oncogene Proteins, Gene Expression Regulation, Neoplastic, Gene Expression Regulation, Leukemic, Genes, p53, Tumor Suppressor Protein p53, Mice, Proto-Oncogene Proteins c-mdm2

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