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  • 1
    Publication Date: 2009-11-07
    Description: X-linked adrenoleukodystrophy (ALD) is a severe brain demyelinating disease in boys that is caused by a deficiency in ALD protein, an adenosine triphosphate-binding cassette transporter encoded by the ABCD1 gene. ALD progression can be halted by allogeneic hematopoietic cell transplantation (HCT). We initiated a gene therapy trial in two ALD patients for whom there were no matched donors. Autologous CD34+ cells were removed from the patients, genetically corrected ex vivo with a lentiviral vector encoding wild-type ABCD1, and then re-infused into the patients after they had received myeloablative treatment. Over a span of 24 to 30 months of follow-up, we detected polyclonal reconstitution, with 9 to 14% of granulocytes, monocytes, and T and B lymphocytes expressing the ALD protein. These results strongly suggest that hematopoietic stem cells were transduced in the patients. Beginning 14 to 16 months after infusion of the genetically corrected cells, progressive cerebral demyelination in the two patients stopped, a clinical outcome comparable to that achieved by allogeneic HCT. Thus, lentiviral-mediated gene therapy of hematopoietic stem cells can provide clinical benefits in ALD.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Cartier, Nathalie -- Hacein-Bey-Abina, Salima -- Bartholomae, Cynthia C -- Veres, Gabor -- Schmidt, Manfred -- Kutschera, Ina -- Vidaud, Michel -- Abel, Ulrich -- Dal-Cortivo, Liliane -- Caccavelli, Laure -- Mahlaoui, Nizar -- Kiermer, Veronique -- Mittelstaedt, Denice -- Bellesme, Celine -- Lahlou, Najiba -- Lefrere, Francois -- Blanche, Stephane -- Audit, Muriel -- Payen, Emmanuel -- Leboulch, Philippe -- l'Homme, Bruno -- Bougneres, Pierre -- Von Kalle, Christof -- Fischer, Alain -- Cavazzana-Calvo, Marina -- Aubourg, Patrick -- New York, N.Y. -- Science. 2009 Nov 6;326(5954):818-23. doi: 10.1126/science.1171242.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉INSERM UMR745, University Paris-Descartes, 75279 Paris, France.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/19892975" target="_blank"〉PubMed〈/a〉
    Keywords: ATP-Binding Cassette Transporters/*genetics ; Adrenoleukodystrophy/genetics/pathology/*therapy ; Animals ; Brain/pathology ; Cell Differentiation ; Cell Lineage ; Child ; Disease Progression ; Fatty Acids/blood ; Female ; Gene Expression ; *Genetic Therapy ; *Genetic Vectors ; HIV-1/*genetics ; Hematopoiesis ; *Hematopoietic Stem Cell Transplantation ; Hematopoietic Stem Cells/*physiology/virology ; Humans ; Leukocytes, Mononuclear/metabolism ; Male ; Mice ; Microglia/cytology/metabolism ; Myeloablative Agonists/therapeutic use ; Transduction, Genetic ; Transplantation Conditioning ; Transplantation, Autologous ; Virus Integration
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 2
    Publication Date: 2013-04-13
    Description: Isolated congenital asplenia (ICA) is characterized by the absence of a spleen at birth in individuals with no other developmental defects. The patients are prone to life-threatening bacterial infections. The unbiased analysis of exomes revealed heterozygous mutations in RPSA in 18 patients from eight kindreds, corresponding to more than half the patients and over one-third of the kindreds studied. The clinical penetrance in these kindreds is complete. Expression studies indicated that the mutations carried by the patients-a nonsense mutation, a frameshift duplication, and five different missense mutations-cause autosomal dominant ICA by haploinsufficiency. RPSA encodes ribosomal protein SA, a component of the small subunit of the ribosome. This discovery establishes an essential role for RPSA in human spleen development.〈br /〉〈br /〉〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3677541/" target="_blank"〉〈img src="https://static.pubmed.gov/portal/portal3rc.fcgi/4089621/img/3977009" border="0"〉〈/a〉   〈a href="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3677541/" target="_blank"〉This paper as free author manuscript - peer-reviewed and accepted for publication〈/a〉〈br /〉〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Bolze, Alexandre -- Mahlaoui, Nizar -- Byun, Minji -- Turner, Bridget -- Trede, Nikolaus -- Ellis, Steven R -- Abhyankar, Avinash -- Itan, Yuval -- Patin, Etienne -- Brebner, Samuel -- Sackstein, Paul -- Puel, Anne -- Picard, Capucine -- Abel, Laurent -- Quintana-Murci, Lluis -- Faust, Saul N -- Williams, Anthony P -- Baretto, Richard -- Duddridge, Michael -- Kini, Usha -- Pollard, Andrew J -- Gaud, Catherine -- Frange, Pierre -- Orbach, Daniel -- Emile, Jean-Francois -- Stephan, Jean-Louis -- Sorensen, Ricardo -- Plebani, Alessandro -- Hammarstrom, Lennart -- Conley, Mary Ellen -- Selleri, Licia -- Casanova, Jean-Laurent -- 8UL1TR000043/TR/NCATS NIH HHS/ -- R01 HD061403/HD/NICHD NIH HHS/ -- R01HD061403/HD/NICHD NIH HHS/ -- UL1 TR000043/TR/NCATS NIH HHS/ -- New York, N.Y. -- Science. 2013 May 24;340(6135):976-8. doi: 10.1126/science.1234864. Epub 2013 Apr 11.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller University, New York, NY 10065, USA.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/23579497" target="_blank"〉PubMed〈/a〉
    Keywords: DNA Mutational Analysis ; Genetic Loci ; *Haploinsufficiency ; Heterotaxy Syndrome/*genetics ; Humans ; Mutation ; Pedigree ; Penetrance ; Receptors, Laminin/*genetics ; Ribosomal Proteins/*genetics ; Spleen/*abnormalities/growth & development
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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  • 3
    Publication Date: 2005-11-16
    Description: Allogeneic hematopoietic stem cell transplantation (HSCT) is the treatment of choice for many hematological malignancies or inherited disorders. In the partially incompatible HLA setting, ex vivo T-cell depletion of the graft and post-transplantation immunosuppression effectively prevent development of graft-versus-host-disease (GVHD), but lead, in turn, to a delay in immune reconstitution and a concordant increase in the rate of incidence of opportunistic infections and disease relapse. In order to selectively deplete T cells responsible for GVHD, we have designed an ex vivo procedure to eliminate CD25 expressing alloactivated donor T cells. In a first phase I/II study based on the use of an anti-CD25 immunotoxin (IT) 15 pediatric patients with acquired or congenital hematopoietic disorders who had received HSCT were infused with 1 to 8x105 allodepleted T cells/kg. No cases of severe acute (〉grade II) GVHD occurred. aGVHD of grade I or II, which developed in four patients, correlated with anti-host residual proliferation above 1% in a mixed lymphocyte reaction. Evidence for early T cell expansion was shown in 3 patients with ongoing viral infections. In an attempt to improve allo-depletion and infuse larger numbers of cells, we have developed a new method based on immuno-magnetical depletion of CD25 expressing cells. In pre-clinical tests, this method lead to a more specific and efficient allo-depletion than that obtained with IT. This new procedure is currently used in a phase I/II clinical trial that will include 25 pediatric patients with inherited disorders of the immune system. 3x105 to 5x106 allo-depleted donor T cells/kg will be infused, with three to five patients per dose. Allodepleted donor T cells are cryopreserved until the obtention of quality control results Inclusion, i.e. infusion of allodepleted T cells is performed only if:1) engraftment is proven, 2) absence of GVHD 3)residual antithymoglobulin
    Print ISSN: 0006-4971
    Electronic ISSN: 1528-0020
    Topics: Biology , Medicine
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  • 4
    Publication Date: 2013-04-11
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
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