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Letter
Nature Genetics  22, 63 - 68 (1999)
doi:10.1038/8767

Inactivating mutations and overexpression of BCL10, a caspase recruitment domain-containing gene, in MALT lymphoma with t(1;14)(p22;q32)

Quangeng Zhang1, 15, Reiner Siebert14, 15, Minhong Yan5, 15, Bernd Hinzmann6, 15, Xiaoli Cui1, 15, Liquan Xue1, Karen M. Rakestraw3, Clayton W. Naeve3, Georg Beckmann6, Dennis D. Weisenburger7, Warren G. Sanger8, 9, Hadwiga Nowotny10, Michael Vesely11, Evelyne Callet-Bauchu12, Gilles Salles13, Vishva M. Dixit5, André Rosenthal6, Brigitte Schlegelberger14 & Stephan W. Morris1, 2, 4

1  Department of Pathology and Laboratory Medicine, St. Jude Children's Research Hospital, Memphis, Tennessee 38105, USA

2  Department of Hematology-Oncology, St. Jude Children's Research Hospital, Memphis, Tennessee 38105, USA

3  Center for Biotechnology, St. Jude Children's Research Hospital, Memphis, Tennessee 38105, USA.

4  Department of Pediatrics, University of Tennessee, College of Medicine, Memphis, Tennessee 38163, USA.

5  Department of Molecular Oncology, Genentech, Inc., South San Francisco, California 94080, USA.

6  metaGen Gesellschaft für Genomforschung mbH, Ihnestrasse 63, D-14195, Berlin, Germany.

7  Department of Pathology and Microbiology, University of Nebraska Medical Center, Omaha, Nebraska 68198-5440, USA.

8  Department of Pediatrics, University of Nebraska Medical Center, Omaha, Nebraska 68198-5440, USA.

9  Center for Human Genetics, University of Nebraska Medical Center, Omaha, Nebraska 68198-5440, USA.

10  Ludwig Boltzmann Institute for Leukemia Research and Hematology, Hanusch Hospital, A-1140 Vienna, Austria.

11  Jakob Erdheim Institute of Pathology, Hospital Lainz, A-1130 Vienna, Austria.

12  Laboratoire d' Hématologie, Centre Hospitalier Lyon-Sud-Université Claude Bernard, 69495 ierre-Bénite, France

13  Service d' Hématologie, Centre Hospitalier Lyon-Sud-Université Claude Bernard, 69495 ierre-Bénite, France.

14  Department of Human Genetics, University of Kiel, D-24105 Kiel, Germany.

15  These authors contributed equally to this work.

Correspondence should be addressed to Stephan W. Morris steve.morris@stjude.org or Brigitte Schlegelberger brigitte@medger.uni-kiel.de
Mucosa-associated lymphoid tissue (MALT) lymphomas most frequently involve the gastrointestinal tract and are the most common subset of extranodal non-Hodgkin lymphoma1 (NHL). Here we describe overexpression of BCL10 , a novel apoptotic signalling gene that encodes an amino-terminal caspase recruitment domain (CARD; ref. 2), in MALT lymphomas due to the recurrent t(1;14)(p22;q32) (ref. 3). BCL10 cDNAs from t(1;14)-positive MALT tumours contained a variety of mutations, most resulting in truncations either in or carboxy terminal to the CARD. Wild-type BCL10 activated NF-kappaB but induced apoptosis of MCF7 and 293 cells. CARD-truncation mutants were unable to induce cell death or activate NF-kappaB, whereas mutants with C-terminal truncations retained NF-kappaB activation but did not induce apoptosis. Mutant BCL10 overexpression might have a twofold lymphomagenic effect: loss of BCL10 pro-apoptosis may confer a survival advantage to MALT B-cells, and constitutive NF-kappaB activation may provide both anti-apoptotic and proliferative signals mediated via its transcriptional targets.

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Nature Genetics
ISSN: 1061-4036
EISSN: 1546-1718
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