Genome-wide array-based CGH for mantle cell lymphoma: identification of homozygous deletions of the proapoptotic gene BIM

被引:0
|
作者
Hiroyuki Tagawa
Sivasundaram Karnan
Ritsuro Suzuki
Keitaro Matsuo
Xiaohua Zhang
Akinobu Ota
Yasuo Morishima
Shigeo Nakamura
Masao Seto
机构
[1] Aichi Cancer Center Research Institute,Division of Molecular Medicine
[2] Aichi Cancer Center Research Institute,Division of Epidemiology
[3] Aichi Cancer Center Hospital,Department of Hematology and Chemotherapy
[4] Aichi Cancer Center Hospital,Department of Pathology and Molecular Diagnostics
[5] Yan'an University School of Medicine,Department of Pathology
[6] Immuno-Biological Laboratories Co.,undefined
[7] Ltd,undefined
来源
Oncogene | 2005年 / 24卷
关键词
mantle cell lymphoma; array CGH; 2q13; chromosome alteration;
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摘要
Mantle cell lymphoma (MCL) is characterized by 11q13 chromosomal translocation and CCND1 overexpression, but additional genomic changes are also important for lymphomagenesis. To identify the genomic aberrations of MCL at higher resolutions, we analysed 29 patient samples and seven cell lines using array-based comparative genomic hybridization (array CGH) consisting of 2348 artificial chromosome clones, which cover the whole genome at a 1.3 mega base resolution. The incidence of identified genomic aberrations was generally higher than that determined with chromosomal CGH. The most frequent imbalances detected by array CGH were gains of chromosomes 3q26 (48%), 7p21 (34%), 6p25 (24%), 8q24 (24%), 10p12 (21%) and 17q23 (17%), and losses of chromosomes 2p11 (83%), 11q22 (59%), 13q21 (55%), 1p21–p22 (52%), 13q34 (52%), 9q22 (45%), 17p13 (45%), 9p21 (41%), 9p24 (41%), 6q23–q24 (38%), 1p36 (31%), 8p23 (34%), 10p14 (31%), 19p13 (28%), 5q21 (21%), 22q12 (21%), 1q42 (17%) and 2q13 (17%). Our analyses also detected several novel recurrent regions of loss located at 1p36, 1q42.2–q43, 2p11.2, 2q13, 17p13.3 and 19p13.2–p13.3, as well as recurrent regions of homozygous loss such as 2p11 (Igκ), 2q13 and 9p21.3–p24.1 (INK4a/ARF). Of the latter, we investigated the 2q13 loss, which led to identification of homozygous deletions of the proapoptotic gene BIM. The high-resolution array CGH technology allowed for the precise identification of genomic aberrations and identification of BIM as a novel candidate tumor suppressor gene in MCL.
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页码:1348 / 1358
页数:10
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