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A Tetracycline-regulated Cell Line Produces High-titer Lentiviral Vectors that Specifically Target Dendritic Cells
Published on: June 19, 2013
Lentivectors are efficient tools to manipulate the dendritic cell cytoskeleton.
Joao Metelo1, Natalie Ward, Adrian J Thrasher
1Molecular Immunology Unit, Wolfson Centre for Gene Therapy of Childhood Disease, UCL Institute of Child Health, Great Ormond Street Hospital for Children NHS Trust, London, United Kingdom.
Cytoskeleton (Hoboken, N.J.)
|July 15, 2011
Summary
Lentiviral vectors effectively deliver genes to human dendritic cells (DC) without altering their immature state. This allows for manipulation of DC function and cytoskeleton studies.
Area of Science:
- Immunology
- Cell Biology
- Molecular Biology
Background:
- Dendritic cells (DC) are crucial for initiating adaptive immunity, with functions like antigen presentation and migration dependent on cytoskeletal dynamics.
- Understanding DC cytoskeletal regulation is challenging due to maturation stimuli altering cell structure and function.
- Lentiviral vectors offer potential for gene manipulation in DCs, but their impact on DC maturation is debated.
Purpose of the Study:
- To assess lentiviral vectors for gene delivery to human monocyte-derived dendritic cells (moDC).
- To determine if lentiviral transduction preserves immature DC cytoskeletal structure and function.
- To evaluate the suitability of lentiviral vectors for studying DC cytoskeleton dynamics.
Main Methods:
- Transduction of immature human moDC and precursor monocytes using VSVG-pseudotyped lentivectors.
- Assessment of cytoskeletal phenotype, migration, antigen uptake, and T-cell stimulation in transduced DCs.
- Evaluation of DC functional maturation responses to lipopolysaccharide (LPS) post-transduction.
Main Results:
- VSVG-pseudotyped lentivectors efficiently transduced immature moDC and monocytes.
- Transduced DCs maintained an immature cytoskeletal phenotype and function, even at high multiplicities of infection.
- Lentiviral vectors did not impede subsequent LPS-induced DC maturation or cytoskeletal changes.
Conclusions:
- VSVG-pseudotyped lentiviral vectors are effective tools for gene delivery to human DCs.
- These vectors preserve the functional immaturity and plasticity of DCs.
- Lentiviral vectors are suitable for investigating DC cytoskeleton dynamics and function.
