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Journal ArticleDOI

Transduction of Human CD34+ Cells That Mediate Long-Term Engraftment of NOD/SCID Mice by HIV Vectors

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TLDR
A lentiviral vector was able to transduce human CD34+ cells capable of stable, long-term reconstitution of nonobese diabetic/severe combined immunodeficient (NOD/SCID) mice and resulted in transgene expression in multiple lineages of human hematopoietic cells for up to 22 weeks after transplantation.
Abstract
Efficient gene transfer into human hematopoietic stem cells (HSCs) is an important goal in the study of the hematopoietic system as well as for gene therapy of hematopoietic disorders. A lentiviral vector based on the human immunodeficiency virus (HIV) was able to transduce human CD34+ cells capable of stable, long-term reconstitution of nonobese diabetic/severe combined immunodeficient (NOD/SCID) mice. High-efficiency transduction occurred in the absence of cytokine stimulation and resulted in transgene expression in multiple lineages of human hematopoietic cells for up to 22 weeks after transplantation.

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Tat peptide-derivatized magnetic nanoparticles allow in vivo tracking and recovery of progenitor cells.

TL;DR: A cell labeling approach using short HIV-Tat peptides to derivatize superparamagnetic nanoparticles is developed, which efficiently internalized into hematopoietic and neural progenitor cells in quantities up to 10–30 pg of super paramagnetic iron per cell.
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Viral vectors for gene therapy: the art of turning infectious agents into vehicles of therapeutics

TL;DR: Further vector refinement and/or development is required before gene therapy will become standard care for any individual disorder, and some clinical successes are over the horizon.
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Humanized mice in translational biomedical research

TL;DR: This Review discusses the development of these new generations of humanized mice, how they will facilitate translational research in several biomedical disciplines and approaches to overcome the remaining limitations of these models.
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Gene transfer by lentiviral vectors is limited by nuclear translocation and rescued by HIV-1 pol sequences.

TL;DR: The results indicate that nuclear translocation of the genome is a rate-limiting step in lentiviral infection of both dividing and non-dividing cells, and that it depends on protein and nucleic acid sequence determinants.
References
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Journal ArticleDOI

In Vivo Gene Delivery and Stable Transduction of Nondividing Cells by a Lentiviral Vector

TL;DR: The ability of HIV-based viral vectors to deliver genes in vivo into nondividing cells could increase the applicability of retroviral vectors in human gene therapy.
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Gene therapy -- promises, problems and prospects

TL;DR: The prospects are good — by the year 2010, gene therapy may be as routine a practice as heart transplants are today.
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Multiply attenuated lentiviral vector achieves efficient gene delivery in vivo.

TL;DR: An HIV vector system in which the virulence genes env, vif, vpr, vpu, and nef have been deleted is described, and this multiply attenuated vector conserved the ability to transduce growth-arrested cells and monocyte-derived macrophages in culture, and could efficiently deliver genes in vivo into adult neurons.
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Development of a Self-Inactivating Lentivirus Vector

TL;DR: Injection of viruses into the rat brain showed that a SIN vector containing the green fluorescent protein gene under the control of the internal CMV promoter transduced neurons as efficiently as a wild-type vector, indicating that the HIV-1 LTR promoter is transcriptionally active in neurons even in the absence of Tat.
Journal Article

Multiple defects in innate and adaptive immunologic function in NOD/LtSz-scid mice.

TL;DR: The multiple defects in innate and adaptive immunity unique to the NOD/LtSz-scid/scid mouse provide an excellent in vivo environment for reconstitution with human hematopoietic cells.
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