Characterization of Adeno-Associated Viral Vector-Mediated Human Factor VIII Gene Therapy in Hemophilia A Mice

2017 ◽  
Vol 28 (5) ◽  
pp. 392-402 ◽  
Author(s):  
Jenny A. Greig ◽  
Qiang Wang ◽  
Amanda L. Reicherter ◽  
Shu-Jen Chen ◽  
Alexandra L. Hanlon ◽  
...  
Keyword(s):  
Gene Therapy ◽  
Factor Viii ◽  
Human Factor ◽  
Hemophilia A ◽  
Viral Vector ◽  
Factor Viii Gene ◽  
Human Factor Viii

scholarly journals 760. Optimized AAV-Mediated Human Factor VIII Gene Therapy in Hemophilia A Mice and Cynomolgus Macaques

2016 ◽  
Vol 24 ◽  
pp. S300
Author(s):  
Jenny A. Greig ◽  
Qiang Wang ◽  
Amanda L. Reicherter ◽  
Erin Bote ◽  
Deirdre McMenamin ◽  
...  
Keyword(s):  
Gene Therapy ◽  
Factor Viii ◽  
Human Factor ◽  
Hemophilia A ◽  
Factor Viii Gene ◽  
Human Factor Viii ◽  
Cynomolgus Macaques

Identification of a Novel Missense Mutation in Exon 4 of the Human Factor VIII Gene Associated with Sever Hemophilia a Patient

2007 ◽  
Vol 10 (23) ◽  
pp. 4299-4302 ◽  
Author(s):  
Habib Onsori ◽  
Mohammad Ali Hossein . ◽  
Sheideh Montaser-Kou . ◽  
Mohammad Asgharzadeh . ◽  
Abbas Ali Hosseinpou .
Keyword(s):  
Factor Viii ◽  
Missense Mutation ◽  
Human Factor ◽  
Hemophilia A ◽  
Factor Viii Gene ◽  
Human Factor Viii ◽  
Exon 4

Development And Application Of A Minimal-Adenoviral Vector System For Gene Therapy Of Hemophilia A

1999 ◽  
Vol 82 (08) ◽  
pp. 562-571 ◽  
Author(s):  
Steven Josephs ◽  
Jiemin Zhou ◽  
Xiangming Fang ◽  
Ramón Alemany ◽  
Cristina Balagué ◽  
...  
Keyword(s):  
Gene Therapy ◽  
Factor Viii ◽  
Human Factor ◽  
Hemophilia A ◽  
Vector System ◽  
High Level Expression ◽  
Viral Particles ◽  
Human Factor Viii ◽  
High Level

IntroductionHemophilia A and B are the most common bleeding disorders caused by deficiencies of clotting factors VIII and IX, respectively, both of which are X-linked with a recessive heredity.1 Replacement of the deficient factors with frequent intravenous injections of plasma concentrates or recombinant proteins is the standard treatment for these diseases.2 Great efforts have been made for nearly a decade toward developing experimental gene therapy for these diseases and aiming at the development of a medical intervention that is more effective and convenient than the currently available replacement therapies.3 Hemophilia is a suitable clinical model for the development of gene therapy products and has a number of advantages: 1) there is a simple and well defined cause-and-effect relationship between the protein deficiencies and bleeding symptoms; 2) tissue-specific expression and precise regulation of the transgenes are not necessary; 3) well characterized animal models are available for preclinical studies; 4) an unequivocal endpoint for product efficacy can be assessed in clinical trials; and 5) even 1% to 5% of the normal physiological levels of the proteins is therapeutic.For gene therapy of hemophilia, the most challenging hurdle, with respect to the long-term expression of the deficient proteins at adequate levels, is the development of a suitable gene delivery system. Technologies have been evolving from ex vivo to in vivo approaches, from initial use of retroviral vector to recent application of adenviral (Ad) or adeno-associated virus (AAV) vector, demonstrating progress from early results of transient low-level expression to more sustained high-level expression.3 For hemophilia A treatment, Ad vectors are particularly useful, since the liver naturally produces factor VIII, and following intravenous (i.v.) injection, Ad vectors concentrate in the liver. This makes the gene transduction efficiency to liver very high. Adenovirus vectors have been developed for gene therapy due to their high titer, broad infectivity, potential for large payload, and in vivo gene delivery capacity.4 Although the immunogenicity and cytotoxicity associated with the early-generation Ad vectors have been a concern with respect to their clinical application, newly developed vectors, in which the viral coding sequences have been deleted, have significantly reduced the side effects associated with the vectors. The “gutless” Ad vector, or so called helper-dependent, large-capacity, or mini- Ad vectors are the representative examples of these new-generation Ad vectors.5-15 The mini-Ad vector system described in this report was developed based on two major research findings. First, an Ad- SV40 hybrid virus discovered during attempts to grow human Ad in non-permissive monkey COS-7 cells.16 The hybrid virus had a genome structure in which only both ends of the Ad sequences were retained and almost all coding sequences of the Ad genome were replaced by symmetric, tandemly repeated SV40 genomes. The hybrid viruses replicated and were packaged in the presence of a wild-type Ad as a helper. This finding implied that total replacement of the Ad genome was possible to form a mini-Ad vector as long as proper helper function and selective pressure was provided. Secondly, it was discovered that Ad packaging can be attenuated by deleting portions of the packaging signal.17 This finding provided a means to put selective pressure on the helper Ad (referred to as ancillary Ad) by specifically limiting its packaging process and allowing a preferential packaging of the mini-Ad. The system, therefore, is designed to have three main components: the mini-Ad vector, the E1-deleted ancillary Ad, and a production cell line that provides AdE1 complementation.Based on the mini-Ad vector system, MiniAdFVIII was developed. The MiniAdFVIII vector carries a 27 kb expression cassette, in which the full-length human factor VIII cDNA is flanked by a human albumin promoter and cognate genomic sequences. Infection of MiniAdFVIII in vitro showed that the vector mediated expression of functional human factor VIII at levels of 100-200 ng/106 cells per 24 hours in HepG2 and 293 cells. With single-dose intravenous injection of 1011 viral particles in hemophilic mice, MiniAdFVIII produced a sustained high-level expression of human factor VIII (at 100-800 ng/ml for up to 369 days) that corrected the factor VIII-deficient phenotype. Safety studies of MiniAdFVIII showed that there were no significant toxicities in mice and dogs after a single intravenous dose of up to 3×1011 and 6×1012 viral particles, respectively. In this report, other studies for developing the MiniAdFVIII vector with a site-specific integration capability and the development of a human factor VIII-tolerized mouse model for preclinical studies of MiniAdFVIII are described.

Characterization of a nondeleterious L1 insertion in an intron of the human factor VIII gene and further evidence of open reading frames in functional L1 elements

Genomics ◽  
1989 ◽  
Vol 4 (3) ◽  
pp. 290-296 ◽  
Author(s):  
Patricia Woods-Samuels ◽  
Corinne Wong ◽  
Stephen L. Mathias ◽  
Alan F. Scott ◽  
Haig H. Kazazian ◽  
...  
Keyword(s):  
Factor Viii ◽  
Human Factor ◽  
Open Reading Frames ◽  
Factor Viii Gene ◽  
Human Factor Viii ◽  
Reading Frames

scholarly journals Sustained phenotypic correction of hemophilia a mice following oncoretroviral-mediated expression of a bioengineered human factor VIII gene in long-term hematopoietic repopulating cells

2004 ◽  
Vol 10 (5) ◽  
pp. 892-902 ◽  
Author(s):  
Morvarid Moayeri ◽  
Ali Ramezani ◽  
Richard A. Morgan ◽  
Teresa S. Hawley ◽  
Robert G. Hawley
Keyword(s):  
Factor Viii ◽  
Human Factor ◽  
Hemophilia A ◽  
Factor Viii Gene ◽  
Human Factor Viii

A quantitative measure of the efficacy of factor VIII in hemophilia A mice

2003 ◽  
Vol 89 (03) ◽  
pp. 480-485 ◽  
Author(s):  
Ernest Parker ◽  
Pete Lollar
Keyword(s):  
Gene Therapy ◽  
Blood Loss ◽  
Confidence Interval ◽  
Factor Viii ◽  
Quantitative Method ◽  
Human Factor ◽  
Hemophilia A ◽  
Quantitative Measure ◽  
Small Samples ◽  
Human Factor Viii

SummaryWe developed a quantitative method to study the efficacy of intravenously delivered human factor VIII in hemophilia A mice. Mortality was assessed after tail transection under conditions in which there were no survivors in untreated hemophilia A mice. Blood loss was significantly greater in untreated hemophilia A mice compared to normal C57BL/6 mice, and in hemophilia A non-survivors that were treated with subtherapeutic doses of factor VIII. The up-and-down method for small samples yielded an estimated dose of factor VIII producing survival in 50% of the mice (ED50) of 58 units/kg (95% confidence interval: 42.4 - 78.5 units/kg). This method should be useful in the evaluation and comparison of novel factor VIII products delivered either parenterally or in a gene therapy setting.

scholarly journals Neonatal helper-dependent adenoviral vector gene therapy mediates correction of hemophilia A and tolerance to human factor VIII

2011 ◽  
Vol 108 (5) ◽  
pp. 2082-2087 ◽  
Author(s):  
Chuhong Hu ◽  
Racel G. Cela ◽  
Masataka Suzuki ◽  
Brendan Lee ◽  
Gerald S. Lipshutz
Keyword(s):  
Gene Therapy ◽  
Factor Viii ◽  
Adenoviral Vector ◽  
Human Factor ◽  
Hemophilia A ◽  
Human Factor Viii

scholarly journals Gene therapy for hemophilia A: production of therapeutic levels of human factor VIII in vivo in mice.

1995 ◽  
Vol 92 (4) ◽  
pp. 1023-1027 ◽  
Author(s):  
V. J. Dwarki ◽  
P. Belloni ◽  
T. Nijjar ◽  
J. Smith ◽  
L. Couto ◽  
...  
Keyword(s):  
Gene Therapy ◽  
Factor Viii ◽  
Human Factor ◽  
Hemophilia A ◽  
Human Factor Viii

Characterization of the human factor VIII gene

Nature ◽  
1984 ◽  
Vol 312 (5992) ◽  
pp. 326-330 ◽  
Author(s):  
Jane Gitschier ◽  
William I. Wood ◽  
Therese M. Goralka ◽  
Karen L. Wion ◽  
Ellson Y. Chen ◽  
...  
Keyword(s):  
Factor Viii ◽  
Human Factor ◽  
Factor Viii Gene ◽  
Human Factor Viii
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