6533b820fe1ef96bd127a5cb

RESEARCH PRODUCT

MiR-33a Controls hMSCS Osteoblast Commitment Modulating the Yap/Taz Expression Through EGFR Signaling Regulation

Riccardo AlessandroDaniele BellaviaLavinia RaimondiGianluca GiavaresiViviana CostaValeria CarinaAngela De LucaAlice ConigliaroMilena FiniFrancesca Salamanna

subject

epithelial mesenchymal transitionregenerative medicinePDZ DomainsCell CommunicationArticlemicroRNAmedicineHumansEpidermal growth factor receptorEpithelial–mesenchymal transitionBone regenerationCells CulturedEGFR inhibitorsAdaptor Proteins Signal TransducingOsteoblastsmicroRNAbiologyMesenchymal stem cellComputational BiologyOsteoblastMesenchymal Stem CellsYAP-Signaling ProteinsGeneral MedicinePhenotypeCell biologymicroRNAsErbB Receptorsmedicine.anatomical_structureTranscriptional Coactivator with PDZ-Binding Motif Proteinsmesenchymal stromal cellbiology.proteinTrans-Activatorsmesenchymal stromal cellsEGFR signalingSignal TransductionTranscription Factors

description

Mesenchymal stromal cells (hMSCs) display a pleiotropic function in bone regeneration. The signaling involved in osteoblast commitment is still not completely understood, and that determines the failure of current therapies being used. In our recent studies, we identified two miRNAs as regulators of hMSCs osteoblast differentiation driving hypoxia signaling and cytoskeletal reorganization. Other signalings involved in this process are epithelial to mesenchymal transition (EMT) and epidermal growth factor receptor (EGFR) signalings through the regulation of Yes-associated protein (YAP)/PDZ-binding motif (TAZ) expression. In the current study, we investigated the role of miR-33a family as a (i) modulator of YAP/TAZ expression and (ii) a regulator of EGFR signaling during osteoblast commitments. Starting from the observation on hMSCs and primary osteoblast cell lines (Nh-Ost) in which EMT genes and miR-33a displayed a specific expression, we performed a gain and loss of function study with miR-33a-5p and 3p on hMSCs cells and Nh-Ost. After 24 h of transfections, we evaluated the modulation of EMT and osteoblast genes expression by qRT-PCR, Western blot, and Osteoimage assays. Through bioinformatic analysis, we identified YAP as the putative target of miR-33a-3p. Its role was investigated by gain and loss of function studies with miR-33a-3p on hMSCs

yearjournalcountryeditionlanguage
2019-11-22Cells
10.3390/cells8121495http://europepmc.org/articles/PMC6953103