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Related Experiment Videos

Expression of TCL1 in hematologic disorders.

J Roos1, I Hennig, J Schwaller

  • 1Institute of Pathology, University of Berne, Berne, Switzerland.

Pathobiology : Journal of Immunopathology, Molecular and Cellular Biology
|December 26, 2001
PubMed
Summary

TCL1 oncogene expression is found in various lymphoid cells, including lymphomas. Its presence in high-grade B cell lymphomas may hinder B cell differentiation, potentially promoting lymphoma progression.

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Area of Science:

  • Oncology
  • Molecular Biology
  • Hematology

Background:

  • TCL1, MTCP1, and TCL1b are oncogenes implicated in T cell leukemias.
  • TCL1 is activated by chromosomal translocations in T cell leukemias.
  • The function of the TCL1 protein remains largely unknown, with recent evidence suggesting a role in cell survival.

Purpose of the Study:

  • To investigate the expression patterns of TCL1 in a cohort of lymphoma and leukemia patients.
  • To elucidate the cellular contexts in which TCL1 is expressed.

Main Methods:

  • Northern blot analysis
  • Reverse transcription polymerase chain reaction (RT-PCR)
  • Immunohistochemistry

Main Results:

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  • TCL1 expression is primarily restricted to lymphoid cells.
  • TCL1 was detected in both neoplastic (T and B cell neoplasms, Hodgkin's disease) and non-neoplastic lymphoid proliferations.
  • Neoplasms of myeloid and epithelial origin were TCL1-negative.

Conclusions:

  • TCL1 expression is a feature of lymphoid neoplasms.
  • Elevated TCL1 expression in high-grade B cell non-Hodgkin's lymphomas may disrupt B cell differentiation.
  • TCL1 may play a role in the progression from low-grade to high-grade lymphomas.