Back to Search
Start Over
Efficient gene transfer into hematopoietic cells by a retargeting adenoviral vector system with a chimeric fiber of adenovirus serotype 5 and 11p
- Source :
-
Experimental Hematology . Sep2006, Vol. 34 Issue 9, p1170-1181. 12p. - Publication Year :
- 2006
-
Abstract
- Objective: Adenoviral vectors (Ad) were widely used in gene therapy and study of gene function, but the commonly used serotype 5 adenovirus-based vectors (Ad5) could poorly transduce hematopoietic cells because of low expression of viral receptors on these cells. To overcome this limitation, we developed a retargeting adenovector with a chimeric fiber of Ad5 and Ad11p (Ad5F11p) and evaluated its gene transfer ability in hematopoietic cells. Materials and Methods: An Ad11p fiber pseudotyped Ad5 vector was generated by modifying the fiber gene of pAdEasy-1 backbone plasmid. Ad5F11p-GFP encoding enhanced green fluorescence protein (GFP) gene was transferred into human leukemic cell lines, primary leukemic cells, and CD34+ hematopoietic cells. The gene transduction efficiency was determined by fluorescence-activated cell sorting assay. Results: More than 90% of U937 or K562 cells could be infected by Ad5F11p-GFP at a moderate multiplicity of infection (MOI). Ad5F11p-GFP is also significantly more effective than control Ad5-GFP in infection of primary myeloid leukemic cells. At 200 MOI, GFP-positive percentages of Ad5F11p-GFP transduced myeloid leukemic cells range from 10.58% to 92.63% with a median of 28.65%. Ad5F11p-GFP could transduce about 50% human hematopoietic stem/progenitor (CD34+) cells, while Ad5-GFP could transduce <15% at 200 MOI. CD46 was reported to be the receptor of Ad11p. Our data suggest that CD46 participates in the process of Ad5F11p-GFP infection but is not the unique molecule determining its gene transfer efficiency of host cells. Conclusion: We established a retargeting adenovector system, which could infect hematopoietic cells effectively and would benefit research work on Ad tropism. [Copyright &y& Elsevier]
- Subjects :
- *GREEN fluorescent protein
*GENETIC transformation
*FLUORESCENCE
*GENE therapy
Subjects
Details
- Language :
- English
- ISSN :
- 0301472X
- Volume :
- 34
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Experimental Hematology
- Publication Type :
- Academic Journal
- Accession number :
- 22134971
- Full Text :
- https://doi.org/10.1016/j.exphem.2006.05.005