Method of purification of viral vectors
First Claim
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1. A method for purification of an intact viral particle from a cell lysate, the method comprising:
- a) treating said cell lysate which contains said intact viral particle with an enzymatic agent that selectively degrades both unencapsulated DNA and RNA;
b) chromatographing the treated lysate from step a) on a first resin; and
c) chromatographing the eluant from step b) on a second resin;
wherein one resin is an anion exchange resin and the other is an immobilized metal ion affinity resin.
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Abstract
The invention provides a method for purifying viral vectors containing therapeutic genes for use in gene therapy. The invention comprises a method of purification from a cell lysate of a recombinant viral vector containing a therapeutic gene, which comprises: a) treating said lysate with an enzymatic agent that selectively degrades both unencapsulated DNA and RNA; b) chromatographing the treated lysate from step a) on a first resin; and c) chromatographing the eluant from step b) on a second resin; wherein one resin is an anion exchange resin and the other is an immobilized metal ion chromatography (IMAC) resin.
144 Citations
27 Claims
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1. A method for purification of an intact viral particle from a cell lysate, the method comprising:
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a) treating said cell lysate which contains said intact viral particle with an enzymatic agent that selectively degrades both unencapsulated DNA and RNA; b) chromatographing the treated lysate from step a) on a first resin; and c) chromatographing the eluant from step b) on a second resin; wherein one resin is an anion exchange resin and the other is an immobilized metal ion affinity resin. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method for purification of intact viral particles from a cell lysate, the method comprising the steps of:
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a) treating said cell lysate which contains said intact viral particle with an enzymatic agent that selectively degrades both unencapsulated DNA and RNA; b) chromatographing the treated lysate from step a) on a first resin, and c) chromatographing the eluant from step b) on a second resin; wherein; one resin is an anion exchange resin and the other is a hydrophobic interaction chromatography resin;
orone resin is a cation exchange resin and the other is either a hydrophobic interaction chromatography resin or an immobilized metal ion affinity resin. - View Dependent Claims (21, 22, 23, 24)
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25. A method of determining the number of intact viral particles in a sample, the method comprising:
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a) chromatographing the sample containing the intact viral particles on an anion exchange resin; b) monitoring the absorbance of the eluate from the chromatography of step (a) at a selected wavelength; and c) determining the total number of intact viral particles in the sample by comparing the absorbance value obtained in step (b) to a standard curve which relates absorbance to number of viral particles. - View Dependent Claims (26, 27)
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Specification