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Published in: BMC Immunology 1/2009

Open Access 01-12-2009 | Research article

High expression of 5-lipoxygenase in normal and malignant mantle zone B lymphocytes

Authors: Yilmaz Mahshid, Marcus-René Lisy, Xiao Wang, Rainer Spanbroek, Jenny Flygare, Birger Christensson, Magnus Björkholm, Birgitta Sander, Andreas JR Habenicht, Hans-Erik Claesson

Published in: BMC Immunology | Issue 1/2009

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Abstract

Background

Human B lymphocytes can produce leukotriene B4 but the biological function of the 5-lipoxygenase (5-LO) pathway in B cells is unclear. In order to better understand and define the role of 5-LO in B cells, we investigated the expression of 5-LO mRNA and protein in subsets of B cells from human tonsils and different types of B cell lymphoma.

Results

Based on RT-PCR and western blot/immunohistochemical staining, with a polyclonal antibody raised against 5-LO, high expression of 5-LO was found in mantle zone B cells from tonsils. By contrast, only a weak expression of 5-LO was detected in germinal centre cells and no expression in plasma cells from tonsils. This pattern of 5-LO expression was preserved in malignant lymphoma with high expression in mantle B cell lymphoma (MCL) and weak or no expression in follicular lymphoma. Primary leukemized MCL, so called B-prolymphocytic leukaemia cells, and MCL cell lines also expressed 5-LO and readily produced LTB4 after activation.

Conclusion

The present report demonstrates the expression of 5-LO mainly in normal and malignant mantle zone B cells while the expression is low or absent in germinal centre B cells and plasma cells, indicating a role of the 5-LO pathway in B cells before the cells finally differentiate to plasma cells.
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Metadata
Title
High expression of 5-lipoxygenase in normal and malignant mantle zone B lymphocytes
Authors
Yilmaz Mahshid
Marcus-René Lisy
Xiao Wang
Rainer Spanbroek
Jenny Flygare
Birger Christensson
Magnus Björkholm
Birgitta Sander
Andreas JR Habenicht
Hans-Erik Claesson
Publication date
01-12-2009
Publisher
BioMed Central
Published in
BMC Immunology / Issue 1/2009
Electronic ISSN: 1471-2172
DOI
https://doi.org/10.1186/1471-2172-10-2

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