Abstract
Accurate adenovirus (Ad) quantification requires labor- and time-intensive viral stock purification. While crude viral lysates can be titered by plaque assay, this cell-based assay is neither rapid nor accurate. Consequently, a method for quantification of crude, unpurified viral culture lysates is needed. Given growing interest in alternative Ad serotypes (different from well-studied and characterized serotype Ad5) for basic research and for therapeutic applications, such a method should also apply to alternative serotypes. Using a Q Sepharose XL (QSXL) column-based method, we describe a robust quantification method resulting in efficient retention of viral particles of all serotypes, while non-viral components of crude infected cultures remain largely in the flow-through. The high-performance liquid chromatography-QSXL method allows rapid, accurate adenoviral quantification in crude lysates as well as identification of the various serotypes present in mixed-serotype crude lysates. We also report on conditions that efficiently strip and regenerate the column, extending its functional life.
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Abbreviations
- Ad:
-
adenovirus
- FBS:
-
fetal bovine serum
- HPLC:
-
high-performance liquid chromatography
- QSXL:
-
Q Sepharose XL
References
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Acknowledgements
We thank Drs Richard Harkins and Elisabeth Lehmberg for helpful scientific discussions.
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Kuhn, I., Larsen, B., Gross, C. et al. High-performance liquid chromatography method for rapid assessment of viral particle number in crude adenoviral lysates of mixed serotype. Gene Ther 14, 180–184 (2007). https://doi.org/10.1038/sj.gt.3302851
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DOI: https://doi.org/10.1038/sj.gt.3302851
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