Pyrazinoindolone inhibitors of MAPKAP-K2
D R Goldberg1, Y Choi, D Cogan
1Department of Medicinal Chemistry, Boehringer Ingelheim Pharmaceuticals, Inc., Research and Development Center, 900 Ridgebury Road, Ridgefield, CT 06877, USA. dgoldber@rdg.boehringer-ingelheim.com
Bioorganic & Medicinal Chemistry Letters
|January 29, 2008
Summary
Researchers optimized pyrazinoindolone inhibitors targeting Mitogen-Activated Protein Kinase Activated Protein Kinase 2 (MAPKAP-K2 or MK2). These optimized inhibitors show good cellular potency and favorable properties, effectively inhibiting MK2 for sub-micromolar efficacy.
Area of Science:
- Medicinal Chemistry
- Enzyme Inhibition
- Signal Transduction
Background:
- Mitogen-Activated Protein Kinase Activated Protein Kinase 2 (MAPKAP-K2 or MK2) is a key regulator in cellular signaling pathways.
- Developing potent and selective inhibitors of MK2 is crucial for therapeutic intervention in various diseases.
Purpose of the Study:
- To optimize pyrazinoindolone derivatives as inhibitors of MAPKAP-K2 (MK2).
- To achieve a balance between cellular potency and desirable physicochemical properties for potential drug candidates.
Main Methods:
- Structure-activity relationship (SAR) studies were conducted on pyrazinoindolone scaffolds.
- Cellular assays were employed to determine inhibitory potency against MK2.
- Physicochemical properties of the optimized compounds were evaluated.
Main Results:
- Optimization of pyrazinoindolone inhibitors led to compounds with a favorable balance of cellular potency and physicochemical characteristics.
- Mechanistic studies confirmed the inhibition of MK2 by the optimized compounds.
- Sub-micromolar cellular efficacy was achieved, demonstrating the effectiveness of the inhibitors.
Conclusions:
- The optimized pyrazinoindolone inhibitors represent a promising class of compounds for targeting MK2.
- These inhibitors demonstrate potent cellular activity and acceptable drug-like properties.
- Further development of these MK2 inhibitors may hold therapeutic potential.
More Related Videos
Related Concept Videos
01:42Microtubule Associated Proteins (MAPs)
Microtubule function and architecture are regulated by an array of specialized proteins called microtubule-associated proteins or MAPs. These proteins are widespread across different organisms and have conserved protein motifs, like the multi-TOG domain for tubulin binding found in the CLASP family of MAPs. Some MAPs are lineage-specific based on their conserved domains. Their functions depend upon the cytoskeletal architecture and cell type they are located within. In-plant cells, a specific...
01:28Inhibitors of Bacterial DNA Synthesis
Bacterial pathogens depend on precise and efficient DNA replication to sustain infection. Two type II topoisomerases—DNA gyrase and topoisomerase IV—are critical to this process, as they resolve DNA supercoiling and unlink chromosomes during replication. Fluoroquinolones, synthetic derivatives of quinolones, exploit this mechanism by stabilizing the transient DNA–enzyme cleavage complex, preventing strand religation, and causing lethal double-strand breaks. These antibiotics are selectively...
01:23Dipeptidyl Peptidase 4 Inhibitors
Dipeptidyl peptidase 4 (DPP-4) is a serine protease widely distributed in the body. It's involved in the inactivation of GLP-1 and GIP hormones, which are crucial for insulin regulation. DPP-4 inhibitors, such as sitagliptin (Januvia), saxagliptin (Onglyza), linagliptin (Tradjenta), alogliptin (Nesina), and vildagliptin (Galvus), help increase the proportion of active GLP-1, enhancing insulin secretion. These inhibitors work by competitively binding to DPP-4. This binding causes a significant...
01:30Inhibitors of Viral Protein Synthesis
Protein synthesis is indispensable for viral replication, as viruses lack the cellular machinery required for this process and must hijack the host's translational apparatus. In response, host cells deploy a critical innate immune defense involving interferons, specialized cytokines that play a central role in inhibiting viral propagation.Upon viral detection, infected cells release interferons that bind to receptors on adjacent uninfected cells, activating the JAK-STAT signaling pathway and...
01:22Antiviral Nucleoside Inhibitors
Antiviral Nucleoside InhibitorsAntiviral nucleoside inhibitors are structural analogs of natural nucleosides that interfere with viral DNA or RNA synthesis. These compounds selectively target viral polymerases due to their resemblance to host nucleosides, thereby disrupting viral genome replication.Mechanism of Acyclovir ActionAcyclovir is a guanosine analog with a three-carbon acyclic side chain. It selectively targets herpes simplex virus type 1 (HSV-1), herpes simplex virus type 2 (HSV-2),...
01:25Inhibitors of Bacterial Protein Synthesis
Aminoglycosides constitute a highly potent class of bactericidal antibiotics that exert their antimicrobial effects by targeting the bacterial ribosome, specifically disrupting protein synthesis. These polycationic molecules consist of amino-modified sugars linked via glycosidic bonds to an aminocyclitol core such as 2-deoxystreptamine or streptamine. Their strong positive charges facilitate tight binding to the negatively charged phosphate backbone of ribosomal RNA (rRNA), primarily at the 16S...