Cargando…

Retroviral vector integration in post-transplant hematopoiesis in mice conditioned with either submyeloablative or ablative irradiation

X-linked chronic granulomatous disease (X-CGD) is an inherited immunodeficiency with absent phagocyte NADPH oxidase activity caused by defects in the gene encoding gp91(phox). Here we evaluated strategies for less intensive conditioning for gene therapy of genetic blood disorders without selective a...

Descripción completa

Detalles Bibliográficos
Autores principales: Sadat, Mohammed A., Dirscherl, Sara, Sastry, Lakshmi, Dantzer, Jessica, Pech, Nancy, Griffin, Samantha, Hawkins, Troy, Zhao, Yiqiang, Barese, Cecilia N., Cross, Scott, Orazi, Attilio, An, Caroline, Goebel, W. Scott, Yoder, Mervin C., Li, Xiaoman, Grez, Manuel, Cornetta, Kenneth, Mooney, Sean D., Dinauer, Mary C.
Formato: Texto
Lenguaje:English
Publicado: 2009
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2795029/
https://www.ncbi.nlm.nih.gov/pubmed/19657370
http://dx.doi.org/10.1038/gt.2009.96
_version_ 1782175413589508096
author Sadat, Mohammed A.
Dirscherl, Sara
Sastry, Lakshmi
Dantzer, Jessica
Pech, Nancy
Griffin, Samantha
Hawkins, Troy
Zhao, Yiqiang
Barese, Cecilia N.
Cross, Scott
Orazi, Attilio
An, Caroline
Goebel, W. Scott
Yoder, Mervin C.
Li, Xiaoman
Grez, Manuel
Cornetta, Kenneth
Mooney, Sean D.
Dinauer, Mary C.
author_facet Sadat, Mohammed A.
Dirscherl, Sara
Sastry, Lakshmi
Dantzer, Jessica
Pech, Nancy
Griffin, Samantha
Hawkins, Troy
Zhao, Yiqiang
Barese, Cecilia N.
Cross, Scott
Orazi, Attilio
An, Caroline
Goebel, W. Scott
Yoder, Mervin C.
Li, Xiaoman
Grez, Manuel
Cornetta, Kenneth
Mooney, Sean D.
Dinauer, Mary C.
author_sort Sadat, Mohammed A.
collection PubMed
description X-linked chronic granulomatous disease (X-CGD) is an inherited immunodeficiency with absent phagocyte NADPH oxidase activity caused by defects in the gene encoding gp91(phox). Here we evaluated strategies for less intensive conditioning for gene therapy of genetic blood disorders without selective advantage for gene correction, such as might be used in a human X-CGD protocol. We compared submyeloablative with ablative irradiation as conditioning in murine X-CGD, examining engraftment, oxidase activity and vector integration in mice transplanted with marrow transduced with a gamma-retroviral vector for gp91(phox) expression. The frequency of oxidase-positive neutrophils in the donor population was unexpectedly higher in many 300 cGy-conditioned mice compared to lethally irradiated recipients, as was the fraction of vector-marked donor secondary CFU-S12. Vector integration sites in marrow, spleen, and secondary CFU-S12 DNA from primary recipients were enriched for cancer-associated genes, including Evi1, and integrations in or near cancer-associated genes were more frequent in marrow and secondary CFU-S12 from 300 cGy-conditioned mice compared to fully ablated mice. These findings support the concept that vector integration can confer a selection bias, and suggest that intensity of the conditioning regimen may further influence the effects of vector integration on clonal selection in post-transplant engraftment and hematopoiesis.
format Text
id pubmed-2795029
institution National Center for Biotechnology Information
language English
publishDate 2009
record_format MEDLINE/PubMed
spelling pubmed-27950292010-06-01 Retroviral vector integration in post-transplant hematopoiesis in mice conditioned with either submyeloablative or ablative irradiation Sadat, Mohammed A. Dirscherl, Sara Sastry, Lakshmi Dantzer, Jessica Pech, Nancy Griffin, Samantha Hawkins, Troy Zhao, Yiqiang Barese, Cecilia N. Cross, Scott Orazi, Attilio An, Caroline Goebel, W. Scott Yoder, Mervin C. Li, Xiaoman Grez, Manuel Cornetta, Kenneth Mooney, Sean D. Dinauer, Mary C. Gene Ther Article X-linked chronic granulomatous disease (X-CGD) is an inherited immunodeficiency with absent phagocyte NADPH oxidase activity caused by defects in the gene encoding gp91(phox). Here we evaluated strategies for less intensive conditioning for gene therapy of genetic blood disorders without selective advantage for gene correction, such as might be used in a human X-CGD protocol. We compared submyeloablative with ablative irradiation as conditioning in murine X-CGD, examining engraftment, oxidase activity and vector integration in mice transplanted with marrow transduced with a gamma-retroviral vector for gp91(phox) expression. The frequency of oxidase-positive neutrophils in the donor population was unexpectedly higher in many 300 cGy-conditioned mice compared to lethally irradiated recipients, as was the fraction of vector-marked donor secondary CFU-S12. Vector integration sites in marrow, spleen, and secondary CFU-S12 DNA from primary recipients were enriched for cancer-associated genes, including Evi1, and integrations in or near cancer-associated genes were more frequent in marrow and secondary CFU-S12 from 300 cGy-conditioned mice compared to fully ablated mice. These findings support the concept that vector integration can confer a selection bias, and suggest that intensity of the conditioning regimen may further influence the effects of vector integration on clonal selection in post-transplant engraftment and hematopoiesis. 2009-12 /pmc/articles/PMC2795029/ /pubmed/19657370 http://dx.doi.org/10.1038/gt.2009.96 Text en http://www.nature.com/authors/editorial_policies/license.html#terms Users may view, print, copy, and download text and data-mine the content in such documents, for the purposes of academic research, subject always to the full Conditions of use:http://www.nature.com/authors/editorial_policies/license.html#terms
spellingShingle Article
Sadat, Mohammed A.
Dirscherl, Sara
Sastry, Lakshmi
Dantzer, Jessica
Pech, Nancy
Griffin, Samantha
Hawkins, Troy
Zhao, Yiqiang
Barese, Cecilia N.
Cross, Scott
Orazi, Attilio
An, Caroline
Goebel, W. Scott
Yoder, Mervin C.
Li, Xiaoman
Grez, Manuel
Cornetta, Kenneth
Mooney, Sean D.
Dinauer, Mary C.
Retroviral vector integration in post-transplant hematopoiesis in mice conditioned with either submyeloablative or ablative irradiation
title Retroviral vector integration in post-transplant hematopoiesis in mice conditioned with either submyeloablative or ablative irradiation
title_full Retroviral vector integration in post-transplant hematopoiesis in mice conditioned with either submyeloablative or ablative irradiation
title_fullStr Retroviral vector integration in post-transplant hematopoiesis in mice conditioned with either submyeloablative or ablative irradiation
title_full_unstemmed Retroviral vector integration in post-transplant hematopoiesis in mice conditioned with either submyeloablative or ablative irradiation
title_short Retroviral vector integration in post-transplant hematopoiesis in mice conditioned with either submyeloablative or ablative irradiation
title_sort retroviral vector integration in post-transplant hematopoiesis in mice conditioned with either submyeloablative or ablative irradiation
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2795029/
https://www.ncbi.nlm.nih.gov/pubmed/19657370
http://dx.doi.org/10.1038/gt.2009.96
work_keys_str_mv AT sadatmohammeda retroviralvectorintegrationinposttransplanthematopoiesisinmiceconditionedwitheithersubmyeloablativeorablativeirradiation
AT dirscherlsara retroviralvectorintegrationinposttransplanthematopoiesisinmiceconditionedwitheithersubmyeloablativeorablativeirradiation
AT sastrylakshmi retroviralvectorintegrationinposttransplanthematopoiesisinmiceconditionedwitheithersubmyeloablativeorablativeirradiation
AT dantzerjessica retroviralvectorintegrationinposttransplanthematopoiesisinmiceconditionedwitheithersubmyeloablativeorablativeirradiation
AT pechnancy retroviralvectorintegrationinposttransplanthematopoiesisinmiceconditionedwitheithersubmyeloablativeorablativeirradiation
AT griffinsamantha retroviralvectorintegrationinposttransplanthematopoiesisinmiceconditionedwitheithersubmyeloablativeorablativeirradiation
AT hawkinstroy retroviralvectorintegrationinposttransplanthematopoiesisinmiceconditionedwitheithersubmyeloablativeorablativeirradiation
AT zhaoyiqiang retroviralvectorintegrationinposttransplanthematopoiesisinmiceconditionedwitheithersubmyeloablativeorablativeirradiation
AT baresececilian retroviralvectorintegrationinposttransplanthematopoiesisinmiceconditionedwitheithersubmyeloablativeorablativeirradiation
AT crossscott retroviralvectorintegrationinposttransplanthematopoiesisinmiceconditionedwitheithersubmyeloablativeorablativeirradiation
AT oraziattilio retroviralvectorintegrationinposttransplanthematopoiesisinmiceconditionedwitheithersubmyeloablativeorablativeirradiation
AT ancaroline retroviralvectorintegrationinposttransplanthematopoiesisinmiceconditionedwitheithersubmyeloablativeorablativeirradiation
AT goebelwscott retroviralvectorintegrationinposttransplanthematopoiesisinmiceconditionedwitheithersubmyeloablativeorablativeirradiation
AT yodermervinc retroviralvectorintegrationinposttransplanthematopoiesisinmiceconditionedwitheithersubmyeloablativeorablativeirradiation
AT lixiaoman retroviralvectorintegrationinposttransplanthematopoiesisinmiceconditionedwitheithersubmyeloablativeorablativeirradiation
AT grezmanuel retroviralvectorintegrationinposttransplanthematopoiesisinmiceconditionedwitheithersubmyeloablativeorablativeirradiation
AT cornettakenneth retroviralvectorintegrationinposttransplanthematopoiesisinmiceconditionedwitheithersubmyeloablativeorablativeirradiation
AT mooneyseand retroviralvectorintegrationinposttransplanthematopoiesisinmiceconditionedwitheithersubmyeloablativeorablativeirradiation
AT dinauermaryc retroviralvectorintegrationinposttransplanthematopoiesisinmiceconditionedwitheithersubmyeloablativeorablativeirradiation