Gene therapy model of X-linked severe combined immunodeficiency using a modified foamy virus vector.

X-linked severe combined immunodeficiency (SCID-X1) is an inherited genetic immunodeficiency associated with mutations in the common cytokine receptor γ chain (γc) gene, and characterized by a complete defect of T and natural killer (NK) cells. Gene therapy for SCID-X1 using conventional retroviral...

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Main Authors: Satoshi Horino, Toru Uchiyama, Takanori So, Hiroyuki Nagashima, Shu-Lan Sun, Miki Sato, Atsuko Asao, Yoichi Haji, Yoji Sasahara, Fabio Candotti, Shigeru Tsuchiya, Shigeo Kure, Kazuo Sugamura, Naoto Ishii
Format: Article
Language:English
Published: Public Library of Science (PLoS) 2013-01-01
Series:PLoS ONE
Online Access:http://europepmc.org/articles/PMC3749225?pdf=render
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author Satoshi Horino
Toru Uchiyama
Takanori So
Hiroyuki Nagashima
Shu-Lan Sun
Miki Sato
Atsuko Asao
Yoichi Haji
Yoji Sasahara
Fabio Candotti
Shigeru Tsuchiya
Shigeo Kure
Kazuo Sugamura
Naoto Ishii
author_facet Satoshi Horino
Toru Uchiyama
Takanori So
Hiroyuki Nagashima
Shu-Lan Sun
Miki Sato
Atsuko Asao
Yoichi Haji
Yoji Sasahara
Fabio Candotti
Shigeru Tsuchiya
Shigeo Kure
Kazuo Sugamura
Naoto Ishii
author_sort Satoshi Horino
collection DOAJ
description X-linked severe combined immunodeficiency (SCID-X1) is an inherited genetic immunodeficiency associated with mutations in the common cytokine receptor γ chain (γc) gene, and characterized by a complete defect of T and natural killer (NK) cells. Gene therapy for SCID-X1 using conventional retroviral (RV) vectors carrying the γc gene results in the successful reconstitution of T cell immunity. However, the high incidence of vector-mediated T cell leukemia, caused by vector insertion near or within cancer-related genes has been a serious problem. In this study, we established a gene therapy model of mouse SCID-X1 using a modified foamy virus (FV) vector expressing human γc. Analysis of vector integration in a human T cell line demonstrated that the FV vector integration sites were significantly less likely to be located within or near transcriptional start sites than RV vector integration sites. To evaluate the therapeutic efficacy, bone marrow cells from γc-knockout (γc-KO) mice were infected with the FV vector and transplanted into γc-KO mice. Transplantation of the FV-treated cells resulted in the successful reconstitution of functionally active T and B cells. These data suggest that FV vectors can be effective and may be safer than conventional RV vectors for gene therapy for SCID-X1.
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spelling doaj.art-cc6e14ba193741ca86d06061430ec0352022-12-22T01:41:30ZengPublic Library of Science (PLoS)PLoS ONE1932-62032013-01-0188e7159410.1371/journal.pone.0071594Gene therapy model of X-linked severe combined immunodeficiency using a modified foamy virus vector.Satoshi HorinoToru UchiyamaTakanori SoHiroyuki NagashimaShu-Lan SunMiki SatoAtsuko AsaoYoichi HajiYoji SasaharaFabio CandottiShigeru TsuchiyaShigeo KureKazuo SugamuraNaoto IshiiX-linked severe combined immunodeficiency (SCID-X1) is an inherited genetic immunodeficiency associated with mutations in the common cytokine receptor γ chain (γc) gene, and characterized by a complete defect of T and natural killer (NK) cells. Gene therapy for SCID-X1 using conventional retroviral (RV) vectors carrying the γc gene results in the successful reconstitution of T cell immunity. However, the high incidence of vector-mediated T cell leukemia, caused by vector insertion near or within cancer-related genes has been a serious problem. In this study, we established a gene therapy model of mouse SCID-X1 using a modified foamy virus (FV) vector expressing human γc. Analysis of vector integration in a human T cell line demonstrated that the FV vector integration sites were significantly less likely to be located within or near transcriptional start sites than RV vector integration sites. To evaluate the therapeutic efficacy, bone marrow cells from γc-knockout (γc-KO) mice were infected with the FV vector and transplanted into γc-KO mice. Transplantation of the FV-treated cells resulted in the successful reconstitution of functionally active T and B cells. These data suggest that FV vectors can be effective and may be safer than conventional RV vectors for gene therapy for SCID-X1.http://europepmc.org/articles/PMC3749225?pdf=render
spellingShingle Satoshi Horino
Toru Uchiyama
Takanori So
Hiroyuki Nagashima
Shu-Lan Sun
Miki Sato
Atsuko Asao
Yoichi Haji
Yoji Sasahara
Fabio Candotti
Shigeru Tsuchiya
Shigeo Kure
Kazuo Sugamura
Naoto Ishii
Gene therapy model of X-linked severe combined immunodeficiency using a modified foamy virus vector.
PLoS ONE
title Gene therapy model of X-linked severe combined immunodeficiency using a modified foamy virus vector.
title_full Gene therapy model of X-linked severe combined immunodeficiency using a modified foamy virus vector.
title_fullStr Gene therapy model of X-linked severe combined immunodeficiency using a modified foamy virus vector.
title_full_unstemmed Gene therapy model of X-linked severe combined immunodeficiency using a modified foamy virus vector.
title_short Gene therapy model of X-linked severe combined immunodeficiency using a modified foamy virus vector.
title_sort gene therapy model of x linked severe combined immunodeficiency using a modified foamy virus vector
url http://europepmc.org/articles/PMC3749225?pdf=render
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