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Title: PD1hi cells associate with clusters of proliferating B-cells in marginal zone lymphoma.
Authors: Wickenden, K
Nawaz, N
Mamand, S
Kotecha, D
Wilson, AL
Wagner, SD
Ahearne, MJ
First Published: 15-Sep-2018
Publisher: BMC part of Springer Nature
Citation: Diagnostic Pathology, 2018, 13 (1), p. 74
Abstract: BACKGROUND: Abnormally sustained immune reactions drive B-cell proliferation in some cases of marginal zone lymphoma but the CD4+ T-cell subsets, which are likely to contribute to the B-cell responses in the tumour microenvironment, are not well characterised and neither has the spatial distribution of the different subsets in involved lymph nodes been investigated. METHODS: Employing a workflow of multiplex semi-automated immunohistochemistry combined with image processing we investigated association between infiltrating T-cells and proliferating lymphoma B-cells. RESULTS: Both total numbers of activating follicular helper (Tfh) cells (defined by high expression of PD1) and suppressive regulatory (Treg) T-cells (defined by FOXP3+ expression) and the Tfh:Treg ratio, assessed over relatively large areas of tissue, varied among cases of marginal zone lymphoma. We determined spatial distribution and demonstrated that PD1hi cells showed significantly more clustering than did FOXP3+. To investigate the association of infiltrating T-cells with lymphoma B-cells we employed Pearson correlation and Morisita-Horn index, statistical measures of interaction. We demonstrated that PD1hi cells were associated with proliferating B-cells and confirmed this by nearest neighbour analysis. CONCLUSIONS: The unexpected architectural complexity of T-cell infiltration in marginal zone lymphoma, revealed in this study, further supports a key role for Tfh cells in driving proliferation of lymphoma B-cells. We demonstrate the feasibility of digital analysis of spatial architecture of T-cells within marginal zone lymphoma and future studies will be needed to determine the clinical importance of these observations.
DOI Link: 10.1186/s13000-018-0750-8
eISSN: 1746-1596
Version: Publisher Version
Status: Peer-reviewed
Type: Journal Article
Rights: Copyright © the authors, 2018. This is an open-access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
Description: All data generated or analysed during this study are included in this published article. The Visiopharm app is available on request to the authors.
Appears in Collections:Published Articles, Dept. of Cancer Studies and Molecular Medicine

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