Open Access

Increase of T and B cells and altered BACH2 expression patterns in bone marrow trephines of imatinib‑treated patients with chronic myelogenous leukaemia

  • Authors:
    • Maximilian Von Laffert
    • Mathias Hänel
    • Manfred Dietel
    • Ioannis Anagnostopoulos
    • Korinna Jöhrens
  • View Affiliations

  • Published online on: August 5, 2016     https://doi.org/10.3892/ol.2016.4964
  • Pages: 2421-2428
  • Copyright: © Von Laffert et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

The effect of imatinib on T and B cells in patients with chronic myelogenous leukaemia (CML) is not well understood. An upregulation of the transcription factor Broad‑complex‑Tramtrack‑Bric‑a‑Brac and Cap'n'collar 1 bZip transcription factor 2 (BACH2), which is involved in the development and differentiation of B cells, was demonstrated in a CML cell line treated with imatinib. The present study retrospectively analysed the expression and distribution of cluster of differentiation (CD)3, CD20 and BACH2 (per 1,000 cells), as well as the co‑expression of CD20 and BACH2, using immunohistochemistry in serial bone marrow trephines obtained from 14 CML patients treated with imatinib in comparison to 17 patients with newly diagnosed CML and 6 control trephines. Bone marrow trephines of CML patients in remission under imatinib therapy exhibited significantly higher numbers of CD3 and CD20 infiltrates (partly ordered in aggregates) compared with patients with newly diagnosed CML and control individuals. Similarly, nuclear expression of BACH2 in granulopoietic cells was increased in CML patients treated with imatinib, which may represent the histological correlate of the positive treatment effect. Furthermore, since BACH2 is involved in B cell development, its altered expression patterns by imatinib may be one explanation for high B cell numbers, as revealed by CD20/BACH2 (nuclear)‑positive cells. As the present data are preliminary, future prospective studies are required to assess the prognostic and predictive role of BACH2 in patients with CML under targeted therapy.
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October-2016
Volume 12 Issue 4

Print ISSN: 1792-1074
Online ISSN:1792-1082

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Spandidos Publications style
Von Laffert M, Hänel M, Dietel M, Anagnostopoulos I and Jöhrens K: Increase of T and B cells and altered BACH2 expression patterns in bone marrow trephines of imatinib‑treated patients with chronic myelogenous leukaemia. Oncol Lett 12: 2421-2428, 2016
APA
Von Laffert, M., Hänel, M., Dietel, M., Anagnostopoulos, I., & Jöhrens, K. (2016). Increase of T and B cells and altered BACH2 expression patterns in bone marrow trephines of imatinib‑treated patients with chronic myelogenous leukaemia. Oncology Letters, 12, 2421-2428. https://doi.org/10.3892/ol.2016.4964
MLA
Von Laffert, M., Hänel, M., Dietel, M., Anagnostopoulos, I., Jöhrens, K."Increase of T and B cells and altered BACH2 expression patterns in bone marrow trephines of imatinib‑treated patients with chronic myelogenous leukaemia". Oncology Letters 12.4 (2016): 2421-2428.
Chicago
Von Laffert, M., Hänel, M., Dietel, M., Anagnostopoulos, I., Jöhrens, K."Increase of T and B cells and altered BACH2 expression patterns in bone marrow trephines of imatinib‑treated patients with chronic myelogenous leukaemia". Oncology Letters 12, no. 4 (2016): 2421-2428. https://doi.org/10.3892/ol.2016.4964