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Updated: May 27, 2026
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Retroviral Transduction of Helper T Cells as a Genetic Approach to Study Mechanisms Controlling their Differentiation and Function
Published on: November 4, 2016
[Evaluation and application of exogenous gene expression system based on retroviral vector]
Lingling Ye1, Jian Xu, Shichong Li
1Institute of Biotechnology, Academy of Military Medical Sciences, Beijing 100071, China.
Sheng Wu Gong Cheng Xue Bao = Chinese Journal of Biotechnology
|November 22, 2011
Summary
Retroviral vectors significantly enhance exogenous gene expression in mammalian cells, showing higher efficiency and stability than plasmid transfection. This system is effective for generating high-expressing cell lines for research and therapeutics.
Area of Science:
- Molecular Biology
- Gene Expression Systems
Context:
- Retroviral vectors are widely used for gene therapy and RNA interference.
- Evaluating gene expression efficiency in mammalian cells is crucial for research.
Purpose:
- To assess the efficiency of exogenous gene expression mediated by retroviral vectors in mammalian cells.
- To compare retroviral vectors with plasmid-based systems for gene delivery.
Summary:
- Constructed EGFP vectors using pcDNA3.1(+) and pQCXIN retroviral vectors.
- Infected HEK293 and CHO-K1 cells with retroviral virus and measured EGFP expression.
- Retroviral vector infection yielded higher EGFP expression (twofold) than plasmid transfection.
- Repeated virus infections further enhanced EGFP expression, doubling RFI after four rounds.
- EGFP expression was more stable in HEK293 cells using retroviral vectors.
- Successfully expressed recombinant human activated protein C (rhAPC) in HEK293 cells, achieving 10-15 microg/(10(6) cells d).
Impact:
- Retroviral vectors offer a superior alternative for creating stable, high-expressing mammalian cell lines.
- This method has implications for gene therapy and biopharmaceutical production.
- Provides a robust platform for stable protein expression in cell-based assays and manufacturing.
