Cationic lipid mediated transfer of c-abl and bcr antisense oligonucleotides to immature normal myeloid cells: uptake, biological effects and modulation of gene expression.

Abstract:

: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 tht the use of cationic lipids might enhance the gene-regulatory effects of ODNs by increasing their uptake into normal hematopoietic cells.

journal_name

Ann Hematol

journal_title

Annals of hematology

authors

Albrecht T,Schwab R,Peschel C,Engels HJ,Fischer T,Huber C,Aulitzky WE

doi

10.1007/BF00641311

subject

Has Abstract

pub_date

1996-02-01 00:00:00

pages

73-9

issue

2

eissn

0939-5555

issn

1432-0584

journal_volume

72

pub_type

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