Identification and Optimization of Inhibitors of Trypanosomal Cysteine Proteases: Cruzain, Rhodesain, and TbCatB
摘要:
Trypanosoma cruzi and Trypanosoma brucei are parasites that cause Chagas' disease and African sleeping sickness, respectively. Both parasites rely oil essential cysteine proteases for survival: cruzain for T. cruzi and TbCatB/rhodesain for T. brucei. A recent quantitative high-throughput screen of cruzain identified triazine nitriles. which are known inhibitors of other cysteine proteases, its reversible inhibitors of the enzyme. Structural modifications detailed herein, including core scaffold modification from triazine to purine, improved the in vitro potency against both cruzain and rhodesain by 350-fold, while also gaining activity against T. brucei parasites. Selected compounds were screened against it panel of human cysteine and serine proteases to determine selectivity, and it cocrystal was obtained of our most potent analogue bound to cruzain.
[EN] SUBSTITUTED TRIAZINE AND PURINE COMPOUNDS, METHODS OF INHIBITING CRUZAIN AND RHODESAIN AND METHODS OF TREATING CHAGAS DISEASE AND AFRICAN TRYPANOSOMIASIS [FR] COMPOSÉS DE TRIAZINE ET DE PURINE SUBSTITUÉES, MÉTHODES D'INHIBITION DE CRUZAÏNE ET DE RHODÉSAÏNE ET MÉTHODES DE TRAITEMENT DE LA MALADIE DE CHAGAS ET DE LA TRYPANOSOMIASE AFRICAINE
Development of highly selective casein kinase 1δ/1ε (CK1δ/ε) inhibitors with potent antiproliferative properties
作者:Mathieu Bibian、Ronald J. Rahaim、Jun Yong Choi、Yoshihiko Noguchi、Stephan Schürer、Weimin Chen、Shima Nakanishi、Konstantin Licht、Laura H. Rosenberg、Lin Li、Yangbo Feng、Michael D. Cameron、Derek R. Duckett、John L. Cleveland、William R. Roush
DOI:10.1016/j.bmcl.2013.05.075
日期:2013.8
The development of a series of potent and highly selective caseinkinase 1δ/ε (CK1δ/ε) inhibitors is described. Starting from a purine scaffold inhibitor (SR-653234) identified by high throughput screening, we developed a series of potent and highly kinase selective inhibitors, including SR-2890 and SR-3029, which have IC50 ⩽ 50 nM versus CK1δ. The two lead compounds have ⩽100 nM EC50 values in MTT
Caseinkinase 1δ/ε have been identified as promising therapeutic target for oncology application, including breast and brain cancer. Here, we described our continued efforts in optimization of a lead series of purine scaffold inhibitors that led to identification of two new CK1δ/ε inhibitors 17 and 28 displaying low nanomolar values in antiproliferative assays against the human MDA-MB-231 triple negative
[EN] SUBSTITUTED TRIAZINE AND PURINE COMPOUNDS, METHODS OF INHIBITING CRUZAIN AND RHODESAIN AND METHODS OF TREATING CHAGAS DISEASE AND AFRICAN TRYPANOSOMIASIS<br/>[FR] COMPOSÉS DE TRIAZINE ET DE PURINE SUBSTITUÉES, MÉTHODES D'INHIBITION DE CRUZAÏNE ET DE RHODÉSAÏNE ET MÉTHODES DE TRAITEMENT DE LA MALADIE DE CHAGAS ET DE LA TRYPANOSOMIASE AFRICAINE
申请人:GOVERNMENT OF THE U S A AS REP
公开号:WO2010059418A1
公开(公告)日:2010-05-27
The invention provides for novel triazine and purine compounds ( II ) that are useful for the treatment and prevention of mammalian protozoal diseases, including Af rican trypanosomiasis and Chagas disease.
Identification and Optimization of Inhibitors of Trypanosomal Cysteine Proteases: Cruzain, Rhodesain, and TbCatB
作者:Bryan T. Mott、Rafaela S. Ferreira、Anton Simeonov、Ajit Jadhav、Kenny Kean-Hooi Ang、William Leister、Min Shen、Julia T. Silveira、Patricia S. Doyle、Michelle R. Arkin、James H. McKerrow、James Inglese、Christopher P. Austin、Craig J. Thomas、Brian K. Shoichet、David J. Maloney
DOI:10.1021/jm901069a
日期:2010.1.14
Trypanosoma cruzi and Trypanosoma brucei are parasites that cause Chagas' disease and African sleeping sickness, respectively. Both parasites rely oil essential cysteine proteases for survival: cruzain for T. cruzi and TbCatB/rhodesain for T. brucei. A recent quantitative high-throughput screen of cruzain identified triazine nitriles. which are known inhibitors of other cysteine proteases, its reversible inhibitors of the enzyme. Structural modifications detailed herein, including core scaffold modification from triazine to purine, improved the in vitro potency against both cruzain and rhodesain by 350-fold, while also gaining activity against T. brucei parasites. Selected compounds were screened against it panel of human cysteine and serine proteases to determine selectivity, and it cocrystal was obtained of our most potent analogue bound to cruzain.