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Lentivirus-based gene delivery in mouse embryonic stem cells.
Yoshikazu Kosaka1, Naoya Kobayashi, Takuya Fukazawa
1Department of Surgery, Okayama University Graduate School of Medicine and Dentistry, Okayama, Japan.
Artificial Organs
|March 30, 2004
Summary
HIV-1 lentiviral vectors efficiently deliver genes into mouse embryonic stem cells (mES cells). This method shows promise for advancing gene transfer in various stem cell types, including human embryonic stem cells.
Area of Science:
- Biotechnology
- Molecular Biology
- Stem Cell Research
Background:
- Embryonic stem (ES) cells are crucial for therapeutic research due to their self-renewal capacity.
- Efficient genetic manipulation of ES cells is vital for advancing cell-based therapies.
- HIV-1-derived lentiviral vectors are effective for gene delivery across various cell types.
Purpose of the Study:
- To evaluate the efficacy of lentivirus-based gene delivery into mouse embryonic stem (mES) cells.
- To assess the safety and efficiency of lentiviral transduction in mES cells.
- To determine the in vivo potential of transduced mES cells.
Main Methods:
- Recombinant lentiviral vectors (Lt-GFP and Lt-LacZ) were generated.
- Mouse ES cells were transduced using the FuGENE 6 method.
- Transduction efficiency was assessed via GFP expression and X-gal staining.
- Teratoma formation in SCID mice evaluated the in vivo potential of transduced mES cells.
Main Results:
- FuGENE 6 transduction showed minimal cytotoxicity.
- Gene expression (GFP and LacZ) increased with higher multiplicity of infection (MOI).
- Approximately 42% of mES cells expressed GFP at an MOI of 30.
- Nearly 100% LacZ expression was achieved in mES cells after G418 selection, with teratoma formation observed.
Conclusions:
- HIV-1-based lentiviral vectors are effective for transducing mES cells.
- This gene delivery method holds potential for applications in human ES cells.
- Lentiviral vectors represent a significant advancement in ES cell gene transfer and expression.