RRC ID 36021
Author Kawano S, Maruyama J, Nagashima S, Inami K, Qiu W, Iwasa H, Nakagawa K, Ishigami-Yuasa M, Kagechika H, Nishina H, Hata Y.
Title A cell-based screening for TAZ activators identifies ethacridine, a widely used antiseptic and abortifacient, as a compound that promotes dephosphorylation of TAZ and inhibits adipogenesis in C3H10T1/2 cells.
Journal J Biochem
Abstract Transcriptional co-activator with PSD-95/Dlg-A/ZO-1 (PDZ)-binding motif (TAZ) regulates in cell proliferation and differentiation. In mesenchymal stem cells it promotes osteogenesis and myogenesis, and suppresses adipogenesis. TAZ activators are expected to prevent osteoporosis, obesity and muscle atrophy. TAZ activation induces epithelial-mesenchymal transition, confers stemness to cancer cells and leads to poor clinical prognosis in cancer patients. In this point of view, TAZ inhibitors should contribute to cancer therapy. Thus, TAZ attracts attention as a two-faced drug target. We screened for TAZ modulators by using human lung cancer A549 cells expressing the fluorescent reporter. Through this assay, we obtained TAZ activator candidates. We unexpectedly found that ethacridine, a widely used antiseptic and abortifacient, enhances the interaction of TAZ and protein phosphatases and increases unphosphorylated and nuclear TAZ. Ethacridine inhibits adipogenesis in mesenchymal C3H10T1/2 cells through the activation of TAZ. This finding suggests that ethacridine is a bona fide TAZ activator and supports that our assay is useful to discover TAZ activators.
Volume 158(5)
Pages 413-23
Published 2015-11-1
DOI 10.1093/jb/mvv051
PII mvv051
PMID 25979969
MeSH Active Transport, Cell Nucleus / drug effects Adaptor Proteins, Signal Transducing / agonists Adaptor Proteins, Signal Transducing / genetics Adaptor Proteins, Signal Transducing / metabolism Adipogenesis / drug effects* Anti-Obesity Agents / pharmacology* Cell Line, Tumor Drug Evaluation, Preclinical Ethacridine / pharmacology* Genes, Reporter / drug effects HEK293 Cells Humans Intracellular Signaling Peptides and Proteins / agonists* Intracellular Signaling Peptides and Proteins / antagonists & inhibitors Intracellular Signaling Peptides and Proteins / genetics Intracellular Signaling Peptides and Proteins / metabolism Luminescent Proteins / genetics Luminescent Proteins / metabolism Mesenchymal Stem Cells / cytology Mesenchymal Stem Cells / drug effects* Mesenchymal Stem Cells / metabolism Phosphoproteins / agonists Phosphoproteins / genetics Phosphoproteins / metabolism Phosphorylation / drug effects Promoter Regions, Genetic / drug effects Protein Phosphatase 1 / chemistry Protein Phosphatase 1 / genetics Protein Phosphatase 1 / metabolism* Protein Phosphatase 2 / chemistry Protein Phosphatase 2 / genetics Protein Phosphatase 2 / metabolism* Protein Processing, Post-Translational / drug effects Protein Serine-Threonine Kinases / antagonists & inhibitors Protein Serine-Threonine Kinases / genetics Protein Serine-Threonine Kinases / metabolism RNA Interference Recombinant Fusion Proteins / chemistry Recombinant Fusion Proteins / metabolism Trans-Activators Transcription Factors Transcriptional Coactivator with PDZ-Binding Motif Proteins Tumor Suppressor Proteins / antagonists & inhibitors Tumor Suppressor Proteins / genetics Tumor Suppressor Proteins / metabolism YAP-Signaling Proteins
IF 2.476
Times Cited 17
DNA material pLL3.7 K122 FH-TAZ-ires-GFP-TEAD-responsive-H2B mCherry (RDB13967) pFLAG-human yes-associated protein (YAP)1 (RDB13968) pClneoMyc-LATS1 (RDB13969) pClneoMyc-LATS2 (RDB13970) pClneoLuc-PP1A (RDB13971) pClneoLuc-PP2A (RDB13972).