The anaphase-promoting complex/cyclosome: a new promising target in diffuse large B-cell lymphoma and mantle cell lymphoma

Anke Maes, Ken Maes, Hendrik De Raeve, Eva De Smedt, Philip Vlummens, Vanessa Szablewski, Julie Devin, Sylvia Faict, Kim De Veirman, Eline Menu, Fritz Offner, Marcel Spaargaren, Jérôme Moreaux, Karin Vanderkerken, Els Van Valckenborgh, Elke De Bruyne

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

BACKGROUND: The aggressive B-cell non-Hodgkin lymphomas diffuse large B-cell lymphoma (DLBCL) and mantle cell lymphoma (MCL) are characterised by a high proliferation rate. The anaphase-promoting complex/cyclosome (APC/C) and its co-activators Cdc20 and Cdh1 represent an important checkpoint in mitosis. Here, the role of the APC/C and its co-activators is examined in DLBCL and MCL.

METHODS: The expression and prognostic value of Cdc20 and Cdh1 was investigated using GEP data and immunohistochemistry. Moreover, the therapeutic potential of APC/C targeting was evaluated using the small-molecule inhibitor proTAME and the underlying mechanisms of action were investigated by western blot.

RESULTS: We demonstrated that Cdc20 is highly expressed in DLBCL and aggressive MCL, correlating with a poor prognosis in DLBCL. ProTAME induced a prolonged metaphase, resulting in accumulation of the APC/C-Cdc20 substrate cyclin B1, inactivation/degradation of Bcl-2 and Bcl-xL and caspase-dependent apoptosis. In addition, proTAME strongly enhanced the anti-lymphoma effect of the clinically relevant agents doxorubicin and venetoclax.

CONCLUSION: We identified for the first time APC/C as a new, promising target in DLBCL and MCL. Moreover, we provide evidence that Cdc20 might be a novel, independent prognostic factor in DLBCL and MCL.

Original languageEnglish
Pages (from-to)1137-1146
Number of pages10
JournalBritish Journal of Cancer
Volume120
Issue number12
DOIs
Publication statusPublished - 11 Jun 2019

Keywords

  • large B-cell lymphoma
  • aggressive B-cell non-Hodgkin lymphomas
  • DLBCL

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