Low-speed centrifugation of retroviral vectors absorbed to a particulate substrate: a highly effective means of enhancing retroviral titre.
For many gene therapy applications the effective titre of retroviral vectors is a limiting factor both in vitro and in vivo. Purification and concentration of retrovirus from packaging cell supernatant can overcome this problem. To this end we have investigated a novel procedure which involves compl...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Journal article |
| Language: | English |
| Published: |
2000
|
| _version_ | 1826293334087303168 |
|---|---|
| author | Darling, D Hughes, C Galea-Lauri, J Gäken, J Trayner, I Kuiper, M Farzaneh, F |
| author_facet | Darling, D Hughes, C Galea-Lauri, J Gäken, J Trayner, I Kuiper, M Farzaneh, F |
| author_sort | Darling, D |
| collection | OXFORD |
| description | For many gene therapy applications the effective titre of retroviral vectors is a limiting factor both in vitro and in vivo. Purification and concentration of retrovirus from packaging cell supernatant can overcome this problem. To this end we have investigated a novel procedure which involves complexing retrovirus to a dense and particulate substrate followed by a short low-speed centrifugation. The study reported here uses heat-killed, formaldehyde fixed Staphylococcus aureus (Pansorbin) absorbed to PG13 derived retrovirus. This complex was then used to harvest retrovirus from packaging cell supernatant: centrifugation and washing of this complex allows the retrovirus to be both purified and concentrated. This procedure increases the effective titre of retrovirus by up to 7500-fold after an only 200-fold reduction in volume. The affinity of Pansorbin for retrovirus allows concentration regardless of its encoded genes and makes this protocol applicable to other popular packaging cells and envelope proteins. Possible explanations for the marked increase in titre of concentrated virus and the mechanism governing the complexing of retrovirus to Pansorbin are discussed. |
| first_indexed | 2024-03-07T03:28:30Z |
| format | Journal article |
| id | oxford-uuid:b9dec242-c5f3-4d4c-9bd3-eaf6296ef4fa |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T03:28:30Z |
| publishDate | 2000 |
| record_format | dspace |
| spelling | oxford-uuid:b9dec242-c5f3-4d4c-9bd3-eaf6296ef4fa2022-03-27T05:06:03ZLow-speed centrifugation of retroviral vectors absorbed to a particulate substrate: a highly effective means of enhancing retroviral titre.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:b9dec242-c5f3-4d4c-9bd3-eaf6296ef4faEnglishSymplectic Elements at Oxford2000Darling, DHughes, CGalea-Lauri, JGäken, JTrayner, IKuiper, MFarzaneh, FFor many gene therapy applications the effective titre of retroviral vectors is a limiting factor both in vitro and in vivo. Purification and concentration of retrovirus from packaging cell supernatant can overcome this problem. To this end we have investigated a novel procedure which involves complexing retrovirus to a dense and particulate substrate followed by a short low-speed centrifugation. The study reported here uses heat-killed, formaldehyde fixed Staphylococcus aureus (Pansorbin) absorbed to PG13 derived retrovirus. This complex was then used to harvest retrovirus from packaging cell supernatant: centrifugation and washing of this complex allows the retrovirus to be both purified and concentrated. This procedure increases the effective titre of retrovirus by up to 7500-fold after an only 200-fold reduction in volume. The affinity of Pansorbin for retrovirus allows concentration regardless of its encoded genes and makes this protocol applicable to other popular packaging cells and envelope proteins. Possible explanations for the marked increase in titre of concentrated virus and the mechanism governing the complexing of retrovirus to Pansorbin are discussed. |
| spellingShingle | Darling, D Hughes, C Galea-Lauri, J Gäken, J Trayner, I Kuiper, M Farzaneh, F Low-speed centrifugation of retroviral vectors absorbed to a particulate substrate: a highly effective means of enhancing retroviral titre. |
| title | Low-speed centrifugation of retroviral vectors absorbed to a particulate substrate: a highly effective means of enhancing retroviral titre. |
| title_full | Low-speed centrifugation of retroviral vectors absorbed to a particulate substrate: a highly effective means of enhancing retroviral titre. |
| title_fullStr | Low-speed centrifugation of retroviral vectors absorbed to a particulate substrate: a highly effective means of enhancing retroviral titre. |
| title_full_unstemmed | Low-speed centrifugation of retroviral vectors absorbed to a particulate substrate: a highly effective means of enhancing retroviral titre. |
| title_short | Low-speed centrifugation of retroviral vectors absorbed to a particulate substrate: a highly effective means of enhancing retroviral titre. |
| title_sort | low speed centrifugation of retroviral vectors absorbed to a particulate substrate a highly effective means of enhancing retroviral titre |
| work_keys_str_mv | AT darlingd lowspeedcentrifugationofretroviralvectorsabsorbedtoaparticulatesubstrateahighlyeffectivemeansofenhancingretroviraltitre AT hughesc lowspeedcentrifugationofretroviralvectorsabsorbedtoaparticulatesubstrateahighlyeffectivemeansofenhancingretroviraltitre AT galealaurij lowspeedcentrifugationofretroviralvectorsabsorbedtoaparticulatesubstrateahighlyeffectivemeansofenhancingretroviraltitre AT gakenj lowspeedcentrifugationofretroviralvectorsabsorbedtoaparticulatesubstrateahighlyeffectivemeansofenhancingretroviraltitre AT trayneri lowspeedcentrifugationofretroviralvectorsabsorbedtoaparticulatesubstrateahighlyeffectivemeansofenhancingretroviraltitre AT kuiperm lowspeedcentrifugationofretroviralvectorsabsorbedtoaparticulatesubstrateahighlyeffectivemeansofenhancingretroviraltitre AT farzanehf lowspeedcentrifugationofretroviralvectorsabsorbedtoaparticulatesubstrateahighlyeffectivemeansofenhancingretroviraltitre |