In vivo competitive studies between normal and common gamma chain-defective bone marrow cells: implications for gene therapy

Details

Serval ID
serval:BIB_A5261E569058
Type
Article: article from journal or magazin.
Collection
Publications
Title
In vivo competitive studies between normal and common gamma chain-defective bone marrow cells: implications for gene therapy
Journal
Hum Gene Ther
Author(s)
Otsu M., Sugamura K., Candotti F.
ISSN
1043-0342 (Print)
ISSN-L
1043-0342
Publication state
Published
Issued date
2000
Volume
11
Number
14
Pages
2051-6
Language
english
Notes
Otsu, M
Sugamura, K
Candotti, F
eng
Comparative Study
Research Support, Non-U.S. Gov't
Hum Gene Ther. 2000 Sep 20;11(14):2051-6.
Abstract
Corrective gene transfer into hematopoietic stem cells (HSCs) is being investigated as therapy for X-linked severe combined immunodeficiency (XSCID) and it is hoped that selective advantage of gene-corrected HSCs will help in achieving full immune reconstitution after treatment. Lines of evidence from the results of allogeneic bone marrow transplantation in patients with XSCID support this hypothesis that, however, has not been rigorously tested in an experimental system. We studied the competition kinetics between normal and XSCID bone marrow (BM) cells using a murine bone marrow transplantation (BMT) model. For easy chimerism determination, we used genetic marking with retrovirus-mediated expression of the enhanced green fluorescent protein (EGFP). We found that XSCID BM cells were able to compete with normal BM cells for engraftment of myeloid lineages in a dose-dependent manner, whereas we observed selective repopulation of T, B, and NK cells deriving from normal BM cells. This was true despite the evidence of competitive engraftment of XSCID lineage marker-negative/c-Kit-positive (Lin-/c-Kit+) cells in the bone marrow of treated animals. From these results we extrapolate that genetic correction of XSCID HSCs will result in selective advantage of gene-corrected lymphoid lineages with consequent restoration of lymphocyte populations and high probability of clinical benefit.
Keywords
Animals, Bone Marrow Cells/*metabolism, Bone Marrow Transplantation, Cell Separation, Dose-Response Relationship, Drug, Flow Cytometry, *Gene Transfer Techniques, *Genetic Linkage, Genetic Therapy/*methods, Green Fluorescent Proteins, Humans, Kinetics, Leukocytes, Mononuclear/metabolism, Luminescent Proteins/genetics, Male, Mice, Mice, Inbred C57BL, Mice, SCID, Retroviridae/genetics, Severe Combined Immunodeficiency/*therapy, X Chromosome/*genetics
Pubmed
Create date
01/11/2017 10:29
Last modification date
20/08/2019 15:10
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