[Expression of t(11;18) and bcl-10 in gastrointestinal MALT lymphoma].
To detect chromosome translocation t(11;18) (q21;q21) and the nuclear expression of bcl-10 in gastrointestinal mucosa-associated lymphoid tissue (MALT) lymphoma in Chinese, a possible API2-MALT fusion transcript specific to t(11; 18) (q21; q21) in tumors from 42 cases of primary gastrointestinal lymphoma (29 cases of low grade MALT lymphoma, 13 cases of transformed MALT lymphoma) and 40 cases of diffuse large B cell lymphoma was examined by means of RT-PCR and proved by DNA-sequencing. Bcl-10 expression was examined by immunohistochemical method. The results showed that t(11;18) (q21;q21) was 14% positive in cases of low grade MALT lymphomas and 46% positive in transformed MALT lymphomas, but none in cases of DLBCL. Bcl-10 nuclear expression was seen 61% in low grade MALT and 69% in transformed MALT lymphoma. It was suggested that t(11;18) (q21;q21) was related to the prognosis and development of highly advanced MALT lymphoma but not relevant to DLBCL. Bcl-10 nuclear expressions were not significantly different between these two groups, which remains to be explained.
Department of Hematology, The 3rd Hospital, Peking University, Beijing 100083, China.
Fei
F
Dong
Zi-Fen
ZF
Gao
Miao
M
Wang
Min
M
Li
Hong-Mei
HM
Jing
Xue-Biao
XB
Huang
Xiao-Yan
XY
Ke
D048868:Adaptor Proteins, Signal Transducing; D000074018:B-Cell CLL-Lymphoma 10 Protein; D002352:Carrier Proteins / Q000032:analysis*; D002467:Cell Nucleus / Q000737:chemistry; D002880:Chromosomes, Human, Pair 11; D002887:Chromosomes, Human, Pair 18; D006801:Humans; D007150:Immunohistochemistry; D018442:Lymphoma, B-Cell, Marginal Zone / Q000737:chemistry / Q000235:genetics*; D014178:Translocation, Genetic
D048868:Adaptor Proteins, Signal Transducing; D000074018:B-Cell CLL-Lymphoma 10 Protein; C118591:BCL10 protein, human; D002352:Carrier Proteins