Search results for "RNAi Therapeutics"

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Targeting COPZ1 non-oncogene addiction counteracts the viability of thyroid tumor cells

2017

Abstract Thyroid carcinoma is generally associated with good prognosis, but no effective treatments are currently available for aggressive forms not cured by standard therapy. To find novel therapeutic targets for this tumor type, we had previously performed a siRNA-based functional screening to identify genes essential for sustaining the oncogenic phenotype of thyroid tumor cells, but not required to the same extent for the viability of normal cells (non-oncogene addiction paradigm). Among those, we found the coatomer protein complex ζ1 (COPZ1) gene, which is involved in intracellular traffic, autophagy and lipid homeostasis. In this paper, we investigated the mechanisms through which COPZ…

0301 basic medicineCancer ResearchTime FactorsCOPZ1ApoptosisCOPZ1Thyroid cancerThyroid NeoplasmThyroidRNAi TherapeuticCell death; COPZ1; Non-oncogene addiction; Thyroid carcinoma; Animals; Apoptosis; Autophagy; Cell Line Tumor; Cell Survival; Coatomer Protein; Endoplasmic Reticulum Stress; Female; Gene Expression Regulation Neoplastic; Humans; Mice Nude; RNA Interference; Signal Transduction; Thyroid Neoplasms; Time Factors; Transfection; Tumor Burden; Unfolded Protein Response; Xenograft Model Antitumor Assays; RNAi Therapeutics; Oncology; Cancer ResearchEndoplasmic Reticulum StressOncogene AddictionTumor BurdenGene Expression Regulation Neoplasticmedicine.anatomical_structureOncologyFemaleRNA InterferenceNon-oncogene addictionHumanSignal TransductionCell deathProgrammed cell deathXenograft Model Antitumor AssayTime FactorCell SurvivalMice NudeBiologyTransfectionCoatomer ProteinThyroid carcinomaThyroid carcinoma03 medical and health sciencesCell Line TumorAutophagymedicineAnimalsHumansThyroid NeoplasmsEndoplasmic Reticulum StreAnimalAutophagyApoptosimedicine.diseaseXenograft Model Antitumor AssaysRNAi Therapeutics030104 developmental biologyImmunologyUnfolded Protein ResponseCancer researchUnfolded protein response
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Apoptosis induced by a HIPK2 full-length-specific siRNA is due to off-target effects rather than prevalence of HIPK2-Δe8 isoform

2017

Small interfering RNAs (siRNAs) are widely used to study gene function and extensively exploited for their potential therapeutic applications. HIPK2 is an evolutionary conserved kinase that binds and phosphorylates several proteins directly or indirectly related to apoptosis. Recently, an alternatively spliced isoform skipping 81 nucleotides of exon 8 (Hipk2-Δe8) has been described. Selective depletion of Hipk2 full-length (Hipk2-FL) with a specific siRNA that spares the Hipk2-Δe8 isoform has been shown to strongly induce apoptosis, suggesting an unpredicted dominant-negative effect of Hipk2-FL over the Δe8 isoform. From this observation, we sought to take advantage and assessed the therape…

0301 basic medicineGene isoformMaleProgrammed cell deathSmall interfering RNACell SurvivalBlotting WesternMice Nudecolorectal cancerApoptosisHIPK2BiologyProtein Serine-Threonine KinasesGene Expression Regulation Enzymologic03 medical and health sciencesExonRNA interferenceCell Line TumorAnimalsHumansViability assayoff-target effectCell Line TransformedSettore MED/04 - Patologia GeneraleKinaseReverse Transcriptase Polymerase Chain ReactionAlternative splicingalternative splicing isoformoff-target effectsExonsHCT116 CellsMolecular biologyXenograft Model Antitumor AssaysCell biologyGene Expression Regulation NeoplasticIsoenzymesAlternative Splicing030104 developmental biologyRNAi TherapeuticsOncologyalternative splicing isoformsNeoplastic Stem CellsRNA InterferenceHIPK2; alternative splicing isoforms; colorectal cancer; off-target effects; siRNA therapeutic applicationsiRNA therapeutic applicationCarrier ProteinsColorectal NeoplasmsGene DeletionResearch Paper
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