0000000000668980

AUTHOR

Tapani Viitala

0000-0001-9074-9450

showing 2 related works from this author

Extracellular vesicles provide a capsid-free vector for oncolytic adenoviral DNA delivery

2020

Extracellular vesicles (EVs) have been showcased as auspicious candidates for delivering therapeutic cargo, including oncolytic viruses for cancer treatment. Delivery of oncolytic viruses in EVs could provide considerable advantages, hiding the viruses from the immune system and providing alternative entry pathways into cancer cells. Here we describe the formation and viral cargo of EVs secreted by cancer cells infected with an oncolytic adenovirus (IEVs, infected cell-derived EVs) as a function of time after infection. IEVs were secreted already before the lytic release of virions and their structure resembled normally secreted EVs, suggesting that they were not just apoptotic fragments of…

MECHANISM0301 basic medicineOncolytic adenovirusHistologyadenoviruHEPATITIS-B-VIRUSGenetic enhancementvirusesTETRASPANINGene deliveryBiologysolukalvotGENE DELIVERYPATHWAY03 medical and health sciences0302 clinical medicineImmune systemlcsh:QH573-671MICROVESICLESEXOSOMESsyöpähoidotlcsh:CytologyMICROPARTICLESadenoviruksetCell BiologyadenovirusExtracellular vesiclesVirologyMicrovesicles3. Good healthOncolytic virus030104 developmental biologyLytic cycle030220 oncology & carcinogenesisCELLSCancer cellonkolyyttiset virukset1182 Biochemistry cell and molecular biologycancer therapyAUTOPHAGYonkolyyttinen virushoitoextracellular vesiclesResearch ArticleDNA delivery
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High-Generation Amphiphilic Janus-Dendrimers as Stabilizing Agents for Drug Suspensions

2018

Pharmaceutical nanosuspensions are formed when drug crystals are suspended in aqueous media in the presence of stabilizers. This technology offers a convenient way to enhance the dissolution of poorly water-soluble drug compounds. The stabilizers exert their action through electrostatic or steric interactions, however, the molecular requirements of stabilizing agents have not been studied extensively. Here, four structurally related amphiphilic Janus-dendrimers were synthesized and screened to determine the roles of different macromolecular domains on the stabilization of drug crystals. Physical interaction and nanomilling experiments have substantiated that Janus-dendrimers with fourth gen…

Recrystallization (geology)huumeetPolymers and Plastics116 Chemical sciences02 engineering and technology01 natural sciencesdrugsContact angleMaterials ChemistryHUMAN LECTINSSurface plasmon resonanceta116chemistry.chemical_classificationChemistryBIOLOGICAL-MEMBRANES021001 nanoscience & nanotechnologyPROGRAMMABLE GLYCAN LIGANDSINDOMETHACIN317 PharmacyCLICK CHEMISTRYfarmaseuttinen kemia0210 nano-technologyHydrophobic and Hydrophilic InteractionsDendrimersSURFACEBioengineeringPoloxamer010402 general chemistryRSPOORLY SOLUBLE DRUGBiomaterialsHydrophobic effectSurface-Active AgentsSuspensionslääkeyhdisteetDendrimerAmphiphileGLYCODENDRIMERSOMESta216ta215AlkylMODULAR SYNTHESISWaterPoloxamerCombinatorial chemistry0104 chemical scienceslääkkeet1182 Biochemistry cell and molecular biologypharmaceutical nanosuspensionsCOMPLEX ARCHITECTURESBiomacromolecules
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