Loss of PRDM1/BLIMP-1 function contributes to poor prognosis of activated B-cell-like diffuse large B-cell lymphoma.
Loss of PRDM1/BLIMP-1 function contributes to poor prognosis of activated B-cell-like diffuse large B-cell lymphoma.
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DOI:
10.1038/leu.2016.243
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发表时间:
2017-03
期刊:
影响因子:
11.4
通讯作者:
Young KH
中科院分区:
文献类型:
--
作者:
Xia Y;Xu-Monette ZY;Tzankov A;Li X;Manyam GC;Murty V;Bhagat G;Zhang S;Pasqualucci L;Visco C;Dybkaer K;Chiu A;Orazi A;Zu Y;Richards KL;Hsi ED;Choi WW;van Krieken JH;Huh J;Ponzoni M;Ferreri AJ;Møller MB;Parsons BM;Winter JN;Piris MA;Westin J;Fowler N;Miranda RN;Ok CY;Li Y;Li J;Medeiros LJ;Young KH
PRDM1 /BLIMP-1, a master regulator of plasma-cell differentiation, is frequently inactivated in activated B-cell-like (ABC) diffuse large B-cell lymphoma (DLBCL) patients. Little is known about its genetic aberrations and relevant clinical implications. We assessed a large cohort of patients with de novo DLBCL for PRDM1/BLIMP-1 deletion, mutation, and protein expression. BLIMP-1 expression was frequently associated with the ABC phenotype and plasmablastic morphologic subtype of DLBCL, yet 63% of the ABC-DLBCL patients were negative for BLIMP-1 protein expression. In these patients, loss of BLIMP-1 was associated with Myc overexpression and decreased expression of p53 pathway tumor-suppressor molecules. Also, we found that homozygous PRDM1 deletions and PRDM1 mutations within exons 1 and 2 which encode for domains crucial for transcriptional repression had a poor prognostic impact in patients with ABC-DLBCL but not those with germinal center B-cell-like DLBCL. Gene expression profiling revealed that loss of PRDM1/BLIMP-1 expression correlated with a decreased plasma-cell differentiation signature and upregulation of genes involved in B-cell receptor signaling and tumor-cell proliferation. In conclusion, these results provide clinical and biological insight into the tumor-suppressive role of PRDM1/BLIMP-1 in ABC-DLBCL patients and suggest that loss of PRDM1/BLIMP-1 function contributes to the overall poor prognosis of ABC-DLBCL patients.
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影响因子:
50.3
作者:
Calado DP;Zhang B;Srinivasan L;Sasaki Y;Seagal J;Unitt C;Rodig S;Kutok J;Tarakhovsky A;Schmidt-Supprian M;Rajewsky K
通讯作者:
Rajewsky K
DOI:
10.1186/1756-9966-33-7
发表时间:
2014-01-17
期刊:
Journal of experimental & clinical cancer research : CR
影响因子:
--
作者:
Liang L;Nong L;Zhang S;Zhao J;Ti H;Dong Y;Zhang B;Li T
通讯作者:
Li T
影响因子:
50.3
作者:
Mandelbaum J;Bhagat G;Tang H;Mo T;Brahmachary M;Shen Q;Chadburn A;Rajewsky K;Tarakhovsky A;Pasqualucci L;Dalla-Favera R
通讯作者:
Dalla-Favera R
影响因子:
20.3
作者:
Liu, Yan-Yan;Leboeuf, Christophe;Zhao, Wei-Li
通讯作者:
Zhao, Wei-Li
影响因子:
64.8
作者:
Calfon, M;Zeng, HQ;Ron, D
通讯作者:
Ron, D