Abstract
Objective To investigate the activation of MAPK signal pathway in multiple myeloma and the regulation of BLyS expression levels through MAPK signal pathway; preliminarily study the role of MAPK signal pathway in the up-regulation of BLyS expression levels induced by IFN-γ.Methods Activated MAPK pathway were detected by Western blot,while the expression of BLyS were detected with RT-PCR and Western blot,and Western blot investigated the effect of MAPK pathway on BLyS expression levels induced by IFN-γ.Results In addition to the expression of ERK,JNK,p38,p-JNK was also expressed in MM cell lines,the MAPK pathway inhibitor targeting JNK SP600125 can down-regulate the expression of BLyS,and its activator anisomycin can up-regulate the expression of BLyS.SP600125 restrained the proliferation and survival of MM cells.Conclusion JNK/SAPK pathway was activated in MM cells; The activated degree of JNK/SAPK pathway and the expression level of BLyS was positively correlated.JNK/SAPK pathway play an important role in the up-regulation of BLyS expression levels induced by IFN-γ. Key words: Multiple myeloma; B-lymphocyte stimulator (BLyS) ; MAPK signal pathway
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