Roos, J; Hennig, I; Schwaller, J; Zbären, J; Dummer, R; Burg, G; Tobler, A; Virgilio, L; Croce, CM; Fey, MF; Borisch, B (2001). Expression of TCL1 in hematologic disorders. Pathobiology, 69(2), pp. 59-66. Basel: Karger 10.1159/000048758
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OBJECTIVE: TCL1, MTCP1 and TCL1b are three members of a new family of oncogenes that are expressed in T cell leukemias of ataxia telangiectasia patients (T-PLL, T-CLL). TCL1 is located at 14q32.1 and activated by juxtaposition to the alpha/delta-locus at 14q11 or beta-locus at 7q35 of the T cell receptor during the reciprocal translocations t(14;14)(q11;q32), t(7;14)(q35;q32), or inversion inv(14)(q11;q32). TCL1 encodes a predominantly cytoplasmic protein of 114 aa (14 kD) of unknown function. Recent studies suggest that TCL1 promotes cell survival rather than stimulating cell proliferation, as previously proposed. METHODS: In an attempt to clarify the contexts in which TCL1 is expressed, we investigated TCL1 expression in 114 lymphoma and leukemia patients by Northern blot, RT-PCR and immunohistochemistry. RESULTS: TCL1 expression is restricted to lymphoid cells, and is found in neoplastic (T and B cell neoplasms, and Hodgkin's disease) and nonneoplastic proliferations (reactive lesions). Out of 114 cases, 18 neoplasms of myeloid and 4 cases of epithelial origin were TCL1-negative. In lesions of the lymphoid system, both low- and high-grade lymphomas were found to express TCL1. CONCLUSIONS: We propose that TCL1 expression especially in high-grade B cell non-Hodgkin's lymphomas might interfere with B cell differentiation and promote the transition from low- to high-grade lymphoma.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
04 Faculty of Medicine > Pre-clinic Human Medicine > BioMedical Research (DBMR) |
UniBE Contributor: |
Zbären, Jakob |
ISSN: |
1015-2008 |
ISBN: |
11752899 |
Publisher: |
Karger |
Language: |
English |
Submitter: |
Factscience Import |
Date Deposited: |
04 Oct 2013 14:56 |
Last Modified: |
21 Sep 2023 16:03 |
Publisher DOI: |
10.1159/000048758 |
PubMed ID: |
11752899 |
Web of Science ID: |
000173140900001 |
BORIS DOI: |
10.48350/24138 |
URI: |
https://boris.unibe.ch/id/eprint/24138 (FactScience: 47099) |
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