Generation of Monospecific Nanomolar Tyrosine Kinase Inhibitors via a Chemical Genetic Approach
摘要:
Selective protein kinase inhibitors are highly sought after as tools for studying cellular signal transduction cascades, yet few have been discovered due to the highly conserved fold of kinase catalytic domains. Through a combination of small molecule synthesis and protein mutagenesis, a highly potent (IC50 = 1.5 nM) and uniquely specific inhibitor (4-amino-1-tert-butyl-3-(1'-naphthyl)pyrazolo[3,4-d]pyrimidine) of a rationally engineered v-Src tyrosine kinase (Ile338Gly v-Src) has been identified. Both the potency and specificity of this compound surpass those of any known Src family tyrosine kinase inhibitors. The molecule strongly inhibits the engineered v-Src in whole cells but does not inhibit tyrosine phosphorylation in cells that express only wild-type tyrosine kinases. In addition, the inhibitor selectively disrupts transformation in cells that express the target v-Src. The structural degeneracy of kinase active sites should allow the same complementary inhibitor/protein design strategy to be widely applicable across this entire enzyme superfamily.
A method of treating a disorder. The method includes administering to a subject in need thereof a compound of formula (I):
Each of A, N*, X, Y, Z, R1, and R2 is defined herein. Also disclosed are compounds of the formula and a pharmaceutical composition containing such a compound.
Generation of Monospecific Nanomolar Tyrosine Kinase Inhibitors via a Chemical Genetic Approach
作者:Anthony C. Bishop、Chi-yun Kung、Kavita Shah、Laurie Witucki、Kevan M. Shokat、Yi Liu
DOI:10.1021/ja983267v
日期:1999.2.1
Selective protein kinase inhibitors are highly sought after as tools for studying cellular signal transduction cascades, yet few have been discovered due to the highly conserved fold of kinase catalytic domains. Through a combination of small molecule synthesis and protein mutagenesis, a highly potent (IC50 = 1.5 nM) and uniquely specific inhibitor (4-amino-1-tert-butyl-3-(1'-naphthyl)pyrazolo[3,4-d]pyrimidine) of a rationally engineered v-Src tyrosine kinase (Ile338Gly v-Src) has been identified. Both the potency and specificity of this compound surpass those of any known Src family tyrosine kinase inhibitors. The molecule strongly inhibits the engineered v-Src in whole cells but does not inhibit tyrosine phosphorylation in cells that express only wild-type tyrosine kinases. In addition, the inhibitor selectively disrupts transformation in cells that express the target v-Src. The structural degeneracy of kinase active sites should allow the same complementary inhibitor/protein design strategy to be widely applicable across this entire enzyme superfamily.
US9422253B2
申请人:——
公开号:US9422253B2
公开(公告)日:2016-08-23
US9862691B2
申请人:——
公开号:US9862691B2
公开(公告)日:2018-01-09
Optimizing Small Molecule Inhibitors of Calcium-Dependent Protein Kinase 1 to Prevent Infection by Toxoplasma gondii
作者:Sebastian Lourido、Chao Zhang、Michael S. Lopez、Keliang Tang、Jennifer Barks、Qiuling Wang、Scott A. Wildman、Kevan M. Shokat、L. David Sibley
DOI:10.1021/jm4001314
日期:2013.4.11
Toxoplasma gondii is sensitive to bulky pyrazolo [3,4-d] pyrimidine (PP) inhibitors due to the presence of a Gly gatekeeper in the essential calcium dependent protein kinase 1 (CDPK1). Here we synthesized a number of new derivatives of 3-methyl-benzyl-PP (3-MB-PP, or 1). The potency of PP analogues in inhibiting CDPK1 enzyme activity in vitro (low nM IC50 values) and blocking parasite growth in host cell monolayers in vivo (low mu M EC50 values) were highly correlated and occurred in a CDPK1-specific manner. Chemical modification of the PP scaffold to increase half-life in the presence of microsomes in vitro led to identification of compounds with enhanced stability while retaining activity. Several of these more potent compounds were able to prevent lethal infection with T. gondii in the mouse model. Collectively, the strategies outlined here provide a route for development of more effective compounds for treatment of toxoplasmosis and perhaps related parasitic diseases.