申请人:McMurray John S.
公开号:US08841257B2
公开(公告)日:2014-09-23
Compounds which inhibit the activity of signal transducer and activator of transcription 3 (STAT3) are provided together with methods of making and using the same. The compounds are designed to bind to the SH2 domain of STAT3, preventing STAT3 from binding to receptors for interleukin-6 family cytokines, growth factors such as the platelet-derived growth factor, the epidermal growth factor, vascular endothelial growth factor, and other signaling molecules such as leptin. Blocking these interactions prevents STAT3 from being phosphorylated on Tyr705, which is required for the dimerization of STAT3, translocation to the nucleus, binding to STAT3 response elements on promotors, and transcription of genes. In addition to these activities, binding to the SH2 domain of STAT3 breaks up pre-formed dimmers, thereby preventing the transcriptional activity of the inhibitor.
本发明提供了抑制信号转导和激活转录因子3 (STAT3) 活性的化合物,以及制备和使用这些化合物的方法。这些化合物被设计成结合STAT3的SH2结构域,从而防止STAT3结合白细胞介素6家族细胞因子、血小板源性生长因子、表皮生长因子、血管内皮细胞生长因子等生长因子的受体,以及瘦素等其他信号分子。阻止这些相互作用可以防止STAT3在Tyr705上被磷酸化,这是STAT3二聚化、转位到细胞核、结合于启动子上的STAT3响应元件以及基因转录所必需的。除了这些活性之外,结合到STAT3的SH2结构域还可以破坏预先形成的二聚体,从而防止抑制剂的转录活性。