4-Phenylpyrrolo[3,4-c]carbazole-1,3(2H,6H)-dione Inhibitors of the Checkpoint Kinase Wee1. Structure−Activity Relationships for Chromophore Modification and Phenyl Ring Substitution
摘要:
High-throughput screening has identified a novel class of inhibitors of the checkpoint kinase Wee1, which have potential for use in cancer chemotherapy. These inhibitors are based on a 4-phenylpyrrolo[3,4-c]carbazole- 1,3(2H,6H)-dione template and have been shown by X-ray crystallography to bind at the ATP site of the enzyme. An extensive study of the effects of substitution around this template has been carried out, which has identified substituents which lead to improvements in potency and selectivity for Wee1. While retention of the maleimide ring and pendant 4-phenyl group is necessary for potency, replacement of the carbazole nitrogen by oxygen is well tolerated and results in improved Wee1 selectivity against the related checkpoint kinase Chk1. Wee1 potency and selectivity are also enhanced by the incorporation of lipophilic functionality at the 2'-position of the 4-phenyl ring, and Wee1 selectivity against Chk1 is favored by C3-C5 alkyl substitution of the carbazole nitrogen. These studies provide a basis for the design of active analogues of the pyrrolocarbazole lead with improved physical properties.
4-Phenylpyrrolo[3,4-c]carbazole-1,3(2H,6H)-dione Inhibitors of the Checkpoint Kinase Wee1. Structure−Activity Relationships for Chromophore Modification and Phenyl Ring Substitution
摘要:
High-throughput screening has identified a novel class of inhibitors of the checkpoint kinase Wee1, which have potential for use in cancer chemotherapy. These inhibitors are based on a 4-phenylpyrrolo[3,4-c]carbazole- 1,3(2H,6H)-dione template and have been shown by X-ray crystallography to bind at the ATP site of the enzyme. An extensive study of the effects of substitution around this template has been carried out, which has identified substituents which lead to improvements in potency and selectivity for Wee1. While retention of the maleimide ring and pendant 4-phenyl group is necessary for potency, replacement of the carbazole nitrogen by oxygen is well tolerated and results in improved Wee1 selectivity against the related checkpoint kinase Chk1. Wee1 potency and selectivity are also enhanced by the incorporation of lipophilic functionality at the 2'-position of the 4-phenyl ring, and Wee1 selectivity against Chk1 is favored by C3-C5 alkyl substitution of the carbazole nitrogen. These studies provide a basis for the design of active analogues of the pyrrolocarbazole lead with improved physical properties.
This invention relates to pyrrolocarbazole derivatives according formula I wherein R1, R2, R7, R8, R9, X and Y are as defined in the specification wherein said derivatives specifically inhibit one or both of the checkpoint kinases Wee1 and Chk1
The invention relates to an in vitro method for determining the prognosis of a patient suffering from cancer, wherein the cancer is not hepatocarcinoma, based on CDK5RAP3 gene expression levels. The invention also relates to in vitro methods for predicting the clinical response of a patient suffering from cancer to a treatment with a DNA damaging agent, or for selecting a patient suffering from cancer for a therapy with a DNA damaging agent or for selecting a therapy for a patient suffering from cancer.
本发明涉及一种根据CDK5RAP3基因表达水平确定癌症患者预后的体外方法,其中癌症不是肝癌。本发明还涉及一种体外方法,用于预测癌症患者对 DNA 损伤剂治疗的临床反应,或用于选择癌症患者接受 DNA 损伤剂治疗,或用于选择癌症患者的治疗方法。
Neurofibromatoses therapeutic agents and screening for same
申请人:Fernandez-Valle Cristina
公开号:US10105351B2
公开(公告)日:2018-10-23
Disclosed herein are methods of treating a patient at risk of developing or having a neurofibromatosis or a sporadic schwannoma. In exemplary embodiments, the method involves administering to a subject in need an effective amount of a modulator of a target related to neurofibromatosis. Also disclosed are screening assays involving the implementation of Merlin-null Schwann cells, and to compounds identified using same.
Methods for identifying therapeutic targets and treating monitoring cancers
申请人:Fred Hutchinson Cancer Research Center
公开号:US10676746B2
公开(公告)日:2020-06-09
The present invention provides methods for treating cancers having a mutation in one or more tumor suppressor genes, comprising providing to a subject in need thereof an inhibitor of a kinase, as well as related methods and compositions.
Modified Wee1, crystals of peptide: inhibitor complexes containing such modified Wee1, and methods of use thereof
申请人:Baker Neill Edward
公开号:US20050037476A1
公开(公告)日:2005-02-17
Modified Wee1 peptides, polynucleotides encoding those peptides, and methods for purifying the peptides and crystallizing them as peptide: inhibitor complexes have been discovered. The three-dimensional structure of Wee1, including the ATP substrate binding site, and uses of this information in the design and screening of compounds that may associate with Wee1, or peptides structurally related thereto, have also been discovered.
已经发现了修饰的 Wee1 肽、编码这些肽的多核苷酸以及纯化这些肽并将其结晶为肽:抑制剂复合物的方法。此外,还发现了 Wee1 的三维结构,包括 ATP 底物结合位点,以及利用这些信息设计和筛选可能与 Wee1 结合的化合物或与之结构相关的多肽的方法。