Exploring novel indazole derivatives as ASK1 inhibitors: Design, synthesis, biological evaluation and docking studies. 2024

Mengni He, and Jie Wang, and Wenhua Deng, and Xiaorui Han, and Xiumei Wang, and Lidan Pang, and Jiateng Huang, and Pingping Lan, and Tiantian Wang, and Zengtao Wang
College of Pharmacy, Jiangxi University of Chinese Medicine, Nanchang 330004, PR China.

Apoptosis signal regulated kinase 1 (ASK1, MAP3K5) is a member of the mitogen activated protein kinase (MAPK) signaling pathway, involved in cell survival, differentiation, stress response, and apoptosis. ASK1 kinase inhibition has become a promising strategy for the treatment of Non-alcoholic steatohepatitis (NASH) disease. A series of novel ASK1 inhibitors with indazole scaffolds were designed and synthesized, and their ASK1 kinase activities were evaluated. The System Structure Activity Relationship (SAR) study discovered a promising compound 33c, which has a strong inhibitory effect on ASK1. Noteworthy observations included a discernible reduction in lipid droplets within LO2 cells stained with Oil Red O, coupled with a decrease in LDL, CHO, and TG content within the NASH model cell group. Mechanistic inquiries revealed that compound 33c could inhibit the protein expression levels of the upregulated ASK1-p38/JNK signaling pathway in TNF-α treated HGC-27 cells and regulate apoptotic proteins. In summary, these findings suggest that compound 33c may be valuable for further research as a potential candidate compound against NASH.

UI MeSH Term Description Entries
D007191 Indazoles A group of heterocyclic aromatic organic compounds consisting of the fusion of BENZENE and PYRAZOLES. Indazole
D004305 Dose-Response Relationship, Drug The relationship between the dose of an administered drug and the response of the organism to the drug. Dose Response Relationship, Drug,Dose-Response Relationships, Drug,Drug Dose-Response Relationship,Drug Dose-Response Relationships,Relationship, Drug Dose-Response,Relationships, Drug Dose-Response
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D013329 Structure-Activity Relationship The relationship between the chemical structure of a compound and its biological or pharmacological activity. Compounds are often classed together because they have structural characteristics in common including shape, size, stereochemical arrangement, and distribution of functional groups. Relationship, Structure-Activity,Relationships, Structure-Activity,Structure Activity Relationship,Structure-Activity Relationships
D015195 Drug Design The molecular designing of drugs for specific purposes (such as DNA-binding, enzyme inhibition, anti-cancer efficacy, etc.) based on knowledge of molecular properties such as activity of functional groups, molecular geometry, and electronic structure, and also on information cataloged on analogous molecules. Drug design is generally computer-assisted molecular modeling and does not include PHARMACOKINETICS, dosage analysis, or drug administration analysis. Computer-Aided Drug Design,Computerized Drug Design,Drug Modeling,Pharmaceutical Design,Computer Aided Drug Design,Computer-Aided Drug Designs,Computerized Drug Designs,Design, Pharmaceutical,Drug Design, Computer-Aided,Drug Design, Computerized,Drug Designs,Drug Modelings,Pharmaceutical Designs
D015394 Molecular Structure The location of the atoms, groups or ions relative to one another in a molecule, as well as the number, type and location of covalent bonds. Structure, Molecular,Molecular Structures,Structures, Molecular
D017209 Apoptosis A regulated cell death mechanism characterized by distinctive morphologic changes in the nucleus and cytoplasm, including the endonucleolytic cleavage of genomic DNA, at regularly spaced, internucleosomal sites, i.e., DNA FRAGMENTATION. It is genetically programmed and serves as a balance to mitosis in regulating the size of animal tissues and in mediating pathologic processes associated with tumor growth. Apoptosis, Extrinsic Pathway,Apoptosis, Intrinsic Pathway,Caspase-Dependent Apoptosis,Classic Apoptosis,Classical Apoptosis,Programmed Cell Death,Programmed Cell Death, Type I,Apoptoses, Extrinsic Pathway,Apoptoses, Intrinsic Pathway,Apoptosis, Caspase-Dependent,Apoptosis, Classic,Apoptosis, Classical,Caspase Dependent Apoptosis,Cell Death, Programmed,Classic Apoptoses,Extrinsic Pathway Apoptoses,Extrinsic Pathway Apoptosis,Intrinsic Pathway Apoptoses,Intrinsic Pathway Apoptosis
D047428 Protein Kinase Inhibitors Agents that inhibit PROTEIN KINASES. Protein Kinase Inhibitor,Inhibitor, Protein Kinase,Inhibitors, Protein Kinase,Kinase Inhibitor, Protein,Kinase Inhibitors, Protein
D048052 Mitogen-Activated Protein Kinase 3 A 44-kDa extracellular signal-regulated MAP kinase that may play a role the initiation and regulation of MEIOSIS; MITOSIS; and postmitotic functions in differentiated cells. It phosphorylates a number of TRANSCRIPTION FACTORS; and MICROTUBULE-ASSOCIATED PROTEINS. Extracellular Signal-Regulated Kinase 1,ERK1 Kinase,MAPK3 Mitogen-Activated Protein Kinase,Meiosis-Activated Myelin Basic Protein Kinase p44(mpk),Microtubule-Associated Protein-2 Kinase,PSTkinase p44mpk,Protein-Serine-Threonine Kinase p44(mpk),p44 MAPK,Extracellular Signal Regulated Kinase 1,Kinase, ERK1,Kinase, Microtubule-Associated Protein-2,MAPK3 Mitogen Activated Protein Kinase,Microtubule Associated Protein 2 Kinase,Mitogen Activated Protein Kinase 3,p44mpk, PSTkinase
D048848 MAP Kinase Kinase Kinase 5 A 150-kDa MAP kinase kinase kinase that may play a role in the induction of APOPTOSIS. It has specificity for MAP KINASE KINASE 3; MAP KINASE KINASE 4; and MAP KINASE KINASE 6. ASK1 Protein Kinase,Apoptosis Signal-Regulating Kinase 1,MAP3K5 Protein Kinase,MAPK Kinase Kinase 5,MAPKKK5,Mitogen-Activated Kinase Kinase Kinase Kinase 5,Apoptosis Signal Regulating Kinase 1,Mitogen Activated Kinase Kinase Kinase Kinase 5,Protein Kinase, ASK1,Protein Kinase, MAP3K5

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