0000000000622505

AUTHOR

Maria Bellenghi

showing 5 related works from this author

SCD5-induced oleic acid production reduces melanoma malignancy by intracellular retention of SPARC and cathepsin B

2014

A proper balance between saturated and unsaturated fatty acids (FAs) is required for maintaining cell homeostasis. The increased demand of FAs to assemble the plasma membranes of continuously dividing cancer cells might unbalance this ratio and critically affect tumour outgrowth. We unveiled the role of the stearoyl-CoA desaturase SCD5 in converting saturated FAs into mono-unsaturated FAs during melanoma progression. SCD5 is down-regulated in advanced melanoma and its restored expression significantly reduced melanoma malignancy, both in vitro and in vivo, through a mechanism governing the secretion of extracellular matrix proteins, such as secreted protein acidic and rich in cysteine (SPAR…

cathepsin B2734Intracellular SpaceDown-RegulationCell LineMelanocyteCell Line TumormelanomaHumansintracellular acidityOsteonectinNeoplasticTumorMedicine (all)Fatty AcidsSPARCHydrogen-Ion ConcentrationGene Expression Regulation NeoplasticSCD5Gene Expression Regulationoleic acidDisease ProgressionMelanocytesFatty AcidStearoyl-CoA Desaturasecathepsin B; intracellular acidity; melanoma; oleic acid; SCD5; SPARC; Cathepsin B; Cell Line Tumor; Disease Progression; Down-Regulation; Fatty Acids; Humans; Hydrogen-Ion Concentration; Intracellular Space; Melanocytes; Melanoma; Oleic Acid; Osteonectin; Stearoyl-CoA Desaturase; Gene Expression Regulation Neoplastic; 2734; Medicine (all)Human
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AP2α controls the dynamic balance between miR-126&126* and miR-221&222 during melanoma progression

2016

Accumulating evidences have shown the association between aberrantly expressed microRNAs (miRs) and cancer, where these small regulatory RNAs appear to dictate the cell fate by regulating all the main biological processes. We demonstrated the responsibility of the circuitry connecting the oncomiR-221&222 with the tumor suppressors miR-126&126∗ in melanoma development and progression. According to the inverse correlation between endogenous miR-221&222 and miR-126&126∗, respectively increasing or decreasing with malignancy, their enforced expression or silencing was sufficient for a reciprocal regulation. In line with the opposite roles of these miRs, protein analyses confirmed the reverse ex…

0301 basic medicineCancer ResearchCellular differentiationSettore MED/08 - Anatomia Patologicagrowth-factorCell fate determinationBiologyFatty Acid-Binding ProteinsBioinformaticsap-2 transcription factorlaw.inventioncutaneous melanoma03 medical and health sciencesMolecular Biology; Cancer Research; Genetics0302 clinical medicinelawTranscription (biology)Cell Line TumormicroRNAGeneticsmedicineHumansGene silencingMelanomaMolecular BiologyPsychological repressionsquamous-cell carcinoma; ap-2 transcription factor; cutaneous melanoma; growth-factor; metastatic melanoma; terminal fragment; cancer-cells; tumor-growth; mir-126; methylationMelanomaCell Differentiationsquamous-cell carcinomatumor-growthmedicine.diseaseMicroRNAscancer-cells030104 developmental biologyterminal fragmentmir-126030220 oncology & carcinogenesisDisease ProgressionCancer researchSuppressorOriginal Articlemethylationmetastatic melanomaOncogene
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The abrogation of the HOXB7/PBX2 complex induces apoptosis in melanoma through the miR-221&222-c-FOS pathway.

2013

Cutaneous melanoma is the fastest increasing cancer worldwide. Although several molecular abnormalities have been associated with melanoma progression, the underlying mechanisms are still largely unknown and few targeted therapies are under evaluation. Here we show that the HOXB7/PBX2 dimer acts as a positive transcriptional regulator of the oncogenic microRNA-221 and -222. In addition, demonstrating c-FOS as a direct target of miR-221&222, we identify a HOXB7/PBX2→miR-221&222 →c-FOS regulatory link, whereby the abrogation of functional HOXB7/PBX2 dimers leads to reduced miR-221&222 transcription and elevated c-FOS expression with consequent cell death. Taking advantage of the treatment wit…

Programmed cell deathCancer ResearchSkin NeoplasmsTranscription GeneticApoptosisSmall Interferingc-FosPolymerase Chain ReactionCell LineGeneticCell Line TumorProto-Oncogene ProteinsHOXB7/PBX2 complexmicroRNATranscriptional regulationmedicinemelanomaHumansPBXRNA Small InterferingDNA PrimersHomeodomain Proteinsc-FOS pathwayTumorbiologymicroRNABase SequenceMelanomaHOXB7; HXR9 peptide; melanoma; microRNA; PBX; Apoptosis; Base Sequence; Cell Line Tumor; DNA Primers; Dimerization; Homeodomain Proteins; Humans; Melanoma; MicroRNAs; Polymerase Chain Reaction; Proto-Oncogene Proteins; Proto-Oncogene Proteins c-fos; RNA Small Interfering; Skin Neoplasms; Transcription Genetic; Cancer Research; Oncologymedicine.diseaseMicroRNAsHXR9 peptideOncologyApoptosisCell cultureCutaneous melanomaHOXB7/PBX2 complex ;melanoma ;c-FOS pathwayCancer researchbiology.proteinHOXB7RNATranscriptionDimerizationProto-Oncogene Proteins c-fosCancer Cell Biology
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Prognostic significance of miR-34a in Ewing sarcoma is associated with cyclin D1 and ki-67 expression.

2014

ABSTRACT Background At diagnosis, identification of reliable biological indicators of prognosis to allow stratification of patients according to different risks is an important but still unresolved aspect in the treatment of Ewing sarcoma (EWS) patients. This study aimed to explore the role of miR-34A expression on prognosis of EWS patients. Patients and methods Specimens from 109 patients with non-metastatic EWS treated at the Rizzoli Institute with neoadjuvant chemotherapy (protocols ISG/SSGIII, EW-1, EW-2, EW-REN2, EW-REN3, EW-PILOT) and 17 metastases were studied. Sixty-eight patients (62%) remained disease-free and 41 (38%) relapsed (median follow-up: 67 months, range 9–241 months). Ex…

AdultMalePrognosiHydro-Lyasemedicine.medical_treatmentSarcoma EwingDisease-Free SurvivalCyclin D1medicineHumansCyclin D1Neoplasm Metastasisprognostic biomarkerNeoadjuvant therapyHydro-LyasesAged 80 and overTissue microarraybiologybusiness.industryProportional hazards modelMedicine (all)Ewing's sarcomaMicroRNAHematologyMiddle Agedmedicine.diseasePrognosisNeoadjuvant TherapyNeoplasm MetastasiGene Expression Regulation NeoplasticMicroRNAsKi-67 AntigenTreatment OutcomeOncologyDrug Resistance NeoplasmKi-67biology.proteinCancer researchKi-67ImmunohistochemistryFemaleSarcomacyclin D1; Ewing sarcoma; Ki-67; miR-34a; prognostic biomarkers; Adult; Aged 80 and over; Cyclin D1; Disease-Free Survival; Drug Resistance Neoplasm; Female; Gene Expression Regulation Neoplastic; Humans; Hydro-Lyases; Ki-67 Antigen; Male; MicroRNAs; Middle Aged; Neoadjuvant Therapy; Neoplasm Metastasis; Prognosis; Sarcoma Ewing; Treatment Outcome; Medicine (all)businessEwing sarcomamiR-34aHumanAnnals of oncology : official journal of the European Society for Medical Oncology
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SCD5-induced oleic acid production reduces melanoma malignancy by intracellular retention of SPARC and cathepsin B

2015

A proper balance between saturated and unsaturated fatty acids (FAs) is required for maintaining cell homeostasis. The increased demand of FAs to assemble the plasma membranes of continuously dividing cancer cells might unbalance this ratio and critically affect tumour outgrowth. We unveiled the role of the stearoyl-CoA desaturase SCD5 in converting saturated FAs into mono-unsaturated FAs during melanoma progression. SCD5 is down-regulated in advanced melanoma and its restored expression significantly reduced melanoma malignancy, both in vitro and in vivo, through a mechanism governing the secretion of extracellular matrix proteins, such as secreted protein acidic and rich in cysteine (SPAR…

CathepsinbiologyIntracellular pHCellCathepsin BPathology and Forensic Medicinemedicine.anatomical_structureBiochemistryCancer cellbiology.proteinmedicineSecretionOsteonectinIntracellularThe Journal of Pathology
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