SYK inhibition modulates distinct PI3K/AKT- dependent survival pathways and cholesterol biosynthesis in diffuse large B cell lymphomas.
SYK inhibition modulates distinct PI3K/AKT- dependent survival pathways and cholesterol biosynthesis in diffuse large B cell lymphomas.
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DOI:
10.1016/j.ccr.2013.05.002
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发表时间:
2013-06-10
期刊:
影响因子:
50.3
通讯作者:
Shipp MA
中科院分区:
文献类型:
--
作者:
Chen L;Monti S;Juszczynski P;Ouyang J;Chapuy B;Neuberg D;Doench JG;Bogusz AM;Habermann TM;Dogan A;Witzig TE;Kutok JL;Rodig SJ;Golub T;Shipp MA
B-cell receptor (BCR) signaling pathway components represent promising treatment targets in diffuse large B-cell lymphoma (DLBCL) and additional B-cell tumors. BCR signaling activates spleen tyrosine kinase (SYK) and downstream pathways including PI3K/AKT and NF-κB. In previous studies, chemical SYK blockade selectively decreased BCR signaling and induced apoptosis of BCR-dependent DLBCLs. Herein, we characterize distinct SYK/PI3K-dependent survival pathways in DLBCLs with high or low baseline NF-κB activity including selective repression of the pro-apoptotic HRK protein in NF-κB-low tumors. We also define SYK/PI3K-dependent cholesterol biosynthesis as a feed-forward mechanism of maintaining the integrity of BCRs in lipid rafts in DLBCLs with low or high NF-κB. In addition, SYK amplification and PTEN deletion are identified as selective genetic alterations in primary “BCR”-type DLBCLs.
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影响因子:
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作者:
Liu, Zhilin;Rudd, Michael D.;Richards, JoAnne S.
通讯作者:
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影响因子:
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DOI:
10.1073/pnas.1008969108
发表时间:
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通讯作者:
Pasqualucci, Laura