申请人:Turkson James
公开号:US20110201576A1
公开(公告)日:2011-08-18
The present invention concerns compounds, compositions containing these compounds, and methods of using these compounds and compositions as inhibitors of Stat3 signaling, Stat3 dimerization, Stat3-DNA binding, Stat5-DNA binding, and/or aberrant cell growth in vitro or in vivo, e.g., as anti-cancer agents for treatment of cancer, such as breast cancer. The compounds of the invention include, but are not limited to, NSC 74859 (S3I-201), NSC 42067, NSC 59263, NSC 75912, NSC 11421, NSC 91529, NSC 263435, and pharmaceutically acceptable salts and analogs of the foregoing. Other non-malignant diseases characterized by proliferation of cells that may be treated using the compounds of the invention, but are not limited to, cirrhosis of the liver; graft rejection; restenosis; and disorders characterized by a proliferation of T cells such as autoimmune diseases, e.g., type 1 diabetes, lupus and multiple sclerosis. The invention further includes an in-vitro screening test for the presence of malignant cells in a mammalian tissue; a method of identifying inhibitors of constitutive Stat3 activation, Stat3-DNA binding, Stat5-DNA binding, and/or Stat3 dimerization; and a method of identifying anti-cancer agents.
本发明涉及化合物、含有这些化合物的组合物以及使用这些化合物和组合物作为Stat3信号、Stat3二聚化、Stat3-DNA结合、Stat5-DNA结合和/或体内或体外异常细胞增长的抑制剂的方法,例如作为治疗癌症(如乳腺癌)的抗癌剂。本发明的化合物包括但不限于NSC 74859(S3I-201)、NSC 42067、NSC 59263、NSC 75912、NSC 11421、NSC 91529、NSC 263435及其药学上可接受的盐和类似物。本发明还包括使用该化合物治疗其他非恶性疾病,这些疾病以细胞增生为特征,但不限于肝硬化、移植排斥、再狭窄和以T细胞增殖为特征的疾病,例如自身免疫性疾病,如1型糖尿病、红斑狼疮和多发性硬化症。本发明还包括一种体外筛选恶性细胞的方法;一种识别组成性Stat3激活、Stat3-DNA结合、Stat5-DNA结合和/或Stat3二聚化抑制剂的方法;以及一种识别抗癌剂的方法。