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      Pyrrolopyridine inhibitors of mitogen-activated protein kinase-activated protein kinase 2 (MK-2).

      Journal of Medicinal Chemistry
      Acute Disease, Animals, Anti-Inflammatory Agents, Non-Steroidal, chemical synthesis, chemistry, pharmacology, Crystallography, X-Ray, Humans, Inflammation, drug therapy, Intracellular Signaling Peptides and Proteins, Models, Molecular, Protein-Serine-Threonine Kinases, antagonists & inhibitors, Pyridines, Pyrroles, Rats, Structure-Activity Relationship, Tumor Necrosis Factor-alpha, biosynthesis, U937 Cells

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          Abstract

          A new class of potent kinase inhibitors selective for mitogen-activated protein kinase-activated protein kinase 2 (MAPKAP-K2 or MK-2) for the treatment of rheumatoid arthritis has been prepared and evaluated. These inhibitors have IC50 values as low as 10 nM against the target and have good selectivity profiles against a number of kinases including CDK2, ERK, JNK, and p38. These MK-2 inhibitors have been shown to suppress TNFalpha production in U397 cells and to be efficacious in an acute inflammation model. The structure-activity relationships of this series, the selectivity for MK-2 and their activity in both in vitro and in vivo models are discussed. The observed selectivity is discussed with the aid of an MK-2/inhibitor crystal structure.

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