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An Efficient Method for Adenovirus Production
Published on: June 10, 2021
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A novel method to purify adenovirus based on increasing salt concentrations in buffer
Jinhu Ma1, Chao Su1, Xilei Wang1
1State Key Laboratory of Biotherapy and Cancer Center/Collaborative Innovation Center for Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China.
Summary
This study presents a novel method for purifying adenoviruses using increased salt concentrations during tangential flow filtration and ion-exchange chromatography. This approach enhances adenovirus purification efficiency, reduces contaminants, and simplifies large-scale production for gene therapy applications.
Area of Science:
- Biotechnology
- Gene Therapy
- Viral Vector Production
Background:
- Adenovirus vectors are crucial for gene therapy, but large-scale production faces purification challenges.
- Host cell proteins and serum contaminants reduce adenovirus binding efficiency in ion-exchange chromatography (IEC).
Purpose of the Study:
- To develop a novel, highly efficient method for adenovirus purification.
- To improve the binding capacity and purity of adenoviruses during IEC separation.
Main Methods:
- Increasing salt concentrations in samples for tangential flow filtration (TFF) and IEC.
- Utilizing TFF and IEC for adenovirus isolation and purification.
Main Results:
- Significantly reduced serum and host cell proteins.
- Increased sample loading capacity on IEC columns.
- Achieved >95% adenovirus purity in a single chromatography step.
- Reduced purification steps and chromatography media usage.
Conclusions:
- The novel high-salt concentration method offers a simple, economical, and efficient approach for adenovirus purification.
- This method facilitates large-scale adenovirus production for clinical gene therapy applications.
