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Sperling, S. ; Fiedler, P. ; Lechner, M. ; Pollithy, A. ; Ehrenberg, S. ; Schiefer, A.I.* ; Kenner, L.* ; Feuchtinger, A. ; Kühn, R.* ; Swinerd, G.* ; Schmidt-Supprian, M.* ; Strobl, L.J. ; Zimber-Strobl, U.

Chronic CD30 signaling in B cells results in lymphomagenesis by driving the expansion of plasmablasts and B1 cells.

Blood 133, 2597-2609 (2019)
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CD30 is expressed on a variety of B-cell lymphomas, such as Hodgkin lymphoma, primary effusion lymphoma, and a diffuse large B-cell lymphoma subgroup. In normal tissues, CD30 is expressed on some activated B and T lymphocytes. However, the physiological function of CD30 signaling and its contribution to the generation of CD30(+) lymphomas are still poorly understood. To gain a better understanding of CD30 signaling in B cells, we studied the expression of CD30 in different murine B-cell populations. We show that B1 cells expressed higher levels of CD30 than B2 cells and that CD30 was upregulated in IRF4(+) plasmablasts (PBs). Furthermore, we generated and analyzed mice expressing a constitutively active CD30 receptor in B lymphocytes. These mice displayed an increase in B1 cells in the peritoneal cavity (PerC) and secondary lymphoid organs as well as increased numbers of plasma cells (PCs). TI-2 immunization resulted in a further expansion of B1 cells and PCs. We provide evidence that the expanded B1 population in the spleen included a fraction of PBs. CD30 signals seemed to enhance PC differentiation by increasing activation of NF-kappa B and promoting higher levels of phosphorylated STAT3 and STAT6 and nuclear IRF4. In addition, chronic CD30 signaling led to B-cell lymphomagenesis in aged mice. These lymphomas were localized in the spleen and PerC and had a B1-like/plasmablastic phenotype. We conclude that our mouse model mirrors chronic B-cell activation with increased numbers of CD30(+) lymphocytes and provides experimental proof that chronic CD30 signaling increases the risk of B-cell lymphomagenesis.
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Publication type Article: Journal article
Document type Scientific Article
Keywords Gene-expression; Terminal Differentiation; Soluble Cd30; Future Risk; Cd40; Activation; Antigen; Lymphocytes; Population; Disorders
ISSN (print) / ISBN 0006-4971
e-ISSN 1528-0020
Journal Blood
Quellenangaben Volume: 133, Issue: 24, Pages: 2597-2609 Article Number: , Supplement: ,
Publisher American Society of Hematology
Publishing Place 2021 L St Nw, Suite 900, Washington, Dc 20036 Usa
Reviewing status Peer reviewed