Patients with activated B-cell like diffuse large B-cell lymphoma in high and low infectious disease areas have different inflammatory gene signatures.

Abstract:

:Diffuse large B-cell lymphoma (DLBCL) is a heterogeneous disease with an association with inflammation and viral infections. We hypothesize that environmental factors may be involved in the pathogenesis of DLBCL. In this study, we compared gene expression profiles of lymph node tissues from patients with DLBCL from two different geographical areas with diverse environmental exposures. Specimens from Egyptian and Swedish patients with DLBCL as well as controls were studied. Gene expression analysis using microarray and quantitative polymerase chain reaction demonstrated significantly higher expression of signal transducer and activator of transcription 3 (STAT3) in Swedish as compared to Egyptian patients and control materials from both countries. This was confirmed at protein level using confocal microscopy. The receptor tyrosine kinase ROR1, a "survival factor" for malignant cells, was overexpressed and significantly related to the STAT3 expression pattern. The difference in the expression of genes involved in inflammatory responses and in the tumorigenic process of DLBCL might relate to infectious agents and/or other environmental exposures.

journal_name

Leuk Lymphoma

journal_title

Leukemia & lymphoma

authors

Högfeldt T,Bahnassy AA,Kwiecinska A,Osterborg A,Tamm KP,Porwit A,Zekri AR,Lundahl J,Khaled HM,Mellstedt H,Moshfegh A

doi

10.3109/10428194.2012.738365

subject

Has Abstract

pub_date

2013-05-01 00:00:00

pages

996-1003

issue

5

eissn

1042-8194

issn

1029-2403

journal_volume

54

pub_type

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