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Production of Lentiviral Vectors for Transducing Cells from the Central Nervous System
Published on: May 24, 2012
Highly efficient large-scale lentiviral vector concentration by tandem tangential flow filtration
Aaron R Cooper1, Sanjeet Patel, Shantha Senadheera
1Molecular Biology Institute, University of California, Los Angeles, USA.
Journal of Virological Methods
|July 26, 2011
Summary
This study presents a streamlined method for concentrating lentiviral vectors (LV) using tangential flow filtration (TFF). This approach significantly simplifies large-scale LV production, achieving high titers and efficient cell transduction with minimal toxicity.
Area of Science:
- Biotechnology
- Molecular Biology
- Cell Biology
Background:
- Large-scale lentiviral vector (LV) concentration is often inefficient and time-consuming.
- Traditional methods involve multiple filtration and centrifugation steps.
- Simplified, high-yield concentration methods are needed for efficient LV production.
Purpose of the Study:
- To develop a simpler and more efficient method for large-scale lentiviral vector concentration.
- To demonstrate the efficacy of the developed method for producing high-titer LVs.
- To establish a reliable method for lentiviral vector titer determination.
Main Methods:
- Utilized a two-step tangential flow filtration (TFF) process for concentrating liter-scale LV supernatant.
- Employed multi-layer flasks for scalable production of LV supernatant.
- Developed a multiplexed real-time PCR assay for vector titer and copy number analysis.
Main Results:
- Achieved over 2000-fold LV concentration in under 3 hours with >97% recovery.
- Produced high-titer LVs (>10^10 TU/mL) for efficient transduction of primary hematopoietic stem/progenitor cells without toxicity.
- Successfully concentrated a complex LV (STEMCCA) for induced pluripotent stem cell generation and reprogrammed fibroblasts.
Conclusions:
- The described TFF method significantly simplifies and enhances large-scale lentiviral vector production.
- The method allows for high-titer LV generation and effective, non-toxic cell transduction.
- The developed PCR assay provides a robust tool for lentiviral vector quantification.
