0000000000490056

AUTHOR

Silvana Buccella

showing 3 related works from this author

Modulation of the TGF-β1-induced epithelial to mesenchymal transition (EMT) mediated by P1 and P2 purine receptors in MDCK cells

2017

Epithelial to mesenchymal transition (EMT) occurs during embryogenesis or under pathological conditions such as hypoxia, injury, chronic inflammation, or tissue fibrosis. In renal tubular epithelial cells (MDCK), TGF-β1 induces EMT by reducing or increasing epithelial or mesenchymal marker expression, respectively. In this study, we confirmed that the cAMP analogues, 8-CPT-cAMP or N6-Ph-cAMP, inhibited the TGF-β1-driven overexpression of the mesenchymal markers ZEB-1, Slug, Fibronectin, and α-SMA. Furthermore, we showed that A1, A2A, P2Y1, P2Y11, and P2X7 purine receptor agonists modulated the TGF-β1-induced EMT through the involvement of PKA and/or MAPK/ERK signaling. The stimulation o…

0301 basic medicineMAPK/ERK pathwayMadin Darby canine kidney cellEpithelial-Mesenchymal TransitionFibrosiCellTransforming growth factor β1InflammationStimulationBiologyEpithelial to mesenchymal transition; Fibrosis; Madin Darby canine kidney cells; P1/P2 purinergic receptors; Transforming growth factor β1; Molecular Biology; Cellular and Molecular Neuroscience; Cell BiologyTransforming Growth Factor beta103 medical and health sciencesCellular and Molecular Neuroscience0302 clinical medicineDogsmedicineAnimalsEpithelial–mesenchymal transitionReceptorMolecular BiologyEpithelial to mesenchymal transitionP1/P2 purinergic receptorReceptors Purinergic P2Mesenchymal stem cellReceptors Purinergic P1Cell BiologyMadin Darby canine kidney cellsFibrosisCell biologyFibronectin030104 developmental biologymedicine.anatomical_structure030220 oncology & carcinogenesisbiology.proteinP1/P2 purinergic receptorsOriginal ArticleTransforming growth factor β1medicine.symptomTransforming growth factor
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Guanosine Protects Glial Cells Against 6-Hydroxydopamine Toxicity

2014

Increasing body of evidence indicates that neuron-neuroglia interaction may play a key role in determining the progression of neurodegenerative diseases including Parkinson’s disease (PD), a chronic pathological condition characterized by selective loss of dopaminergic (DA) neurons in the substantia nigra. We have previously reported that guanosine (GUO) antagonizes MPP+-induced cytotoxicity in neuroblastoma cells and exerts neuroprotective effects against 6-hydroxydopamine (6-OHDA) and beta-amyloid-induced apoptosis of SH-SY5Y cells. In the present study we demonstrate that GUO protected C6 glioma cells, taken as a model system for astrocytes, from 6-OHDA-induced neurotoxicity. We show tha…

HydroxydopaminebiologyChemistryNeurodegenerationNeurotoxicitySubstantia nigraNucleoside transporterPharmacologymedicine.diseaseNeuroprotectionNeurotrophic factorsbiology.proteinmedicinePI3K/AKT/mTOR pathway
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Uncovering the Signaling Pathway behind Extracellular Guanine-Induced Activation of NO System: New Perspectives in Memory-Related Disorders

2018

Mounting evidence suggests that the guanine-based purines stand out as key player in cell metabolism and in several models of neurodegenerative disorders, such as Parkinson's and Alzheimer's diseases. Guanosine (GUO) and guanine (GUA) are extracellular signaling molecules derived from the breakdown of the correspondent nucleotide, GTP, and their intracellular and extracellular levels are regulated by the fine-tuned activity of two major enzymes, purine nucleoside phosphorylase (PNP) and guanine deaminase (GDA). Noteworthy, GUO and GUA, seem to play opposite roles in the modulation of cognitive functions, such as learning and memory. Indeed GUO, despite exerting neuroprotective, anti-apoptot…

0301 basic medicineMAPK/ERK pathwayCell signalingGuanineGuanosine03 medical and health scienceschemistry.chemical_compoundGuanine deaminase0302 clinical medicineCGMP; ERK; Guanine; L-NAME; Nitric oxide; SH-SY5Y cell line; Pharmacology; Pharmacology (medical)L-NAMEnitric oxideExtracellularguaninePharmacology (medical)Original ResearchPharmacologyChemistrylcsh:RM1-950Cell biologycGMPERKlcsh:Therapeutics. Pharmacology030104 developmental biologySignal transductionSH-SY5Y cell line030217 neurology & neurosurgeryIntracellularFrontiers in Pharmacology
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