6533b7d4fe1ef96bd1262b03
RESEARCH PRODUCT
Cationic lipide mediated transfer of c-abl and bcr antisense oligonucleotides to immature normal myeloid cells: Uptake, biological effects and modulation of gene expression
C. HuberWalter E. AulitzkyT. AlbrechtThomas FischerH. J. EngelsC. PeschelRenate Schwabsubject
medicine.medical_specialtyCell Membrane PermeabilityChemical PhenomenaMolecular Sequence DataRibonuclease HAntigens CD34BiologyTransfectionPolymerase Chain ReactionCationsProto-Oncogene Proteinshemic and lymphatic diseasesInternal medicineGene expressionmedicineHumansCation Exchange ResinsRNA NeoplasmProto-Oncogene Proteins c-ablGeneCells CulturedOncogene ProteinsABLHematologyBase SequenceCell-Free SystemChemistry PhysicalCell growthCationic polymerizationbreakpoint cluster regionBiological Transporthemic and immune systemsHematologyGeneral MedicineOligonucleotides AntisenseProtein-Tyrosine Kinasesrespiratory systemHematopoietic Stem CellsLipidsMolecular biologyHaematopoiesisGene Expression RegulationDepression ChemicalLiposomesProto-Oncogene Proteins c-bcrdescription
Uptake and biochemical and biological effects of antisense oligodeoxynucleotides (ODN) specific for c-abl and bcr genes were studied in normal immature myeloid cells. CD34-positive cells were purified by positive and negative selection and cultured in liquid culture for 7 days. These cells were then incubated with ODNs, either alone or in combination with cationic lipids. The uptake of ODNs was enhanced by the use of cationic lipids. In addition, very low concentrations of ODNs in combination with cationic lipids were capable of specifically inhibiting the expression of the c-abl gene. In contrast, no effects were seen on the expression of bcr. However, despite the effective blocking of c-abl expression, no changes in cellular growth patterns were observed in liquid culture or in a colony-forming assay. We conclude that the use of cationic lipids might enhance the gene-regulatory effects of ODNs by increasing their uptake into normal hematopoietic cells.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1996-02-01 | Annals of Hematology |