Abstract Title:

Isoliquiritigenin inhibits the growth of multiple myeloma via blocking IL-6 signaling.

Abstract Source:

J Mol Med (Berl). 2012 Nov ;90(11):1311-9. Epub 2012 May 31. PMID: 22648519

Abstract Author(s):

Xiangzheng Chen, Yangping Wu, Yangfu Jiang, Yan Zhou, Yuxi Wang, Yuqin Yao, Cheng Yi, Lantu Gou, Jinliang Yang

Article Affiliation:

Xiangzheng Chen


Previous studies have suggested that isoliquiritigenin (ISL) has anti-carcinogenic activity in several kinds of solid tumors, however, little is known about the effects of ISL on hematologic malignancies. In this study, we investigated the effects of ISL on multiple myeloma (MM) cells both in vitro and in vivo. The results showed that ISL could inhibit the growth of MM cells and induce their apoptosis in time- and dose-dependent manners. ISL exhibited significant anti-tumor activity in MM xenograft models and synergistically enhanced the anti-myeloma activity of adriamycin. Further analysis demonstrated that ISL not only downregulated IL-6 expression but also significantly decreased levels of phosphorylated ERK and STAT3 and could inhibit phosphorylation levels of ERK and STAT3 induced by recombinant human IL-6, which are critical signaling proteins in IL-6 signaling regulation networks. Taken together, our findings suggested that ISL could inhibit the growth of MM via blocking IL-6 signaling and might serve as a promising therapeutic agent for treatment of MM.

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