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Structure-based optimization of PKCtheta inhibitors
L Mosyak1, Z Xu, D Joseph-McCarthy
1Chemical and Screening Sciences, Wyeth Research, Cambridge, MA 02140, U.S.A. lmosyak@wyeth.com
Abstract:
PKCtheta (protein kinase Ctheta) is a central signalling molecule in the T-cell receptor activation pathway and is a target for treatment of a number of diseases. Several PKC inhibitors are in the drug-discovery pharmaceutical programmes today for the treatment of cancer, diabetes and arthritis. CD4(+) T-lymphocytes also play a critical role in the initiation and progression of allergic airway inflammation. Our goal is the development of PKCtheta antagonists as a means to control asthma and autoimmune diseases, using the strategy based on developing small-molecule agents that would block the enzyme's catalytic activity. Here, we discuss our work on the discovery of lead chemical series and review our X-ray structural and modelling approaches, including a structure-surrogate strategy that helped guide us in the lead compound optimizations.
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