Evidence map›Paper›PMID 19222367›Full record

ArticleHuman gene therapy2009

Comparison of factor VIII transgenes bioengineered for improved expression in gene therapy of hemophilia A.

Kerry L Dooriss, Gabriela Denning, Bagirath Gangadharan, Elisabeth H Javazon, David A McCarty, H Trent Spencer, Christopher B Doering

Open access · greenAbstract readComparative Study
In one paragraph

Article in Human gene therapy, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
3.7field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

22 citing papers in PubMed, 47 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Gene therapy for hemophilia.Frontiers in bioscience (Landmark edition) · 2015
    Review
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Engineering Factor Viii for Hemophilia Gene Therapy.Journal of genetic syndromes & gene therapy · 2011
    Article
  18. Engineered Hematopoietic Stem Cells as Therapeutics for Hemophilia A.Journal of genetic syndromes & gene therapy · 2011
    Article
  19. Article
  20. Lentiviral vector platform for production of bioengineered recombinant coagulation factor VIII.Molecular therapy : the journal of the American Society of Gene Therapy · 2011
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 2 institutions in 1 country.

Kerry L DoorissMolecular and Systems Pharmacology Graduate Program, Emory University School of Medicine, Atlanta, GA 30322, USA.
Gabriela Denning
Bagirath Gangadharan
Elisabeth H Javazon
David A McCarty
H Trent Spencer
Christopher B Doering
Emory University · USExpression Therapeutics (United States) · US

Funding

Ex Vivo Gene Therapy for Hemophilia AR42HL083531 · NHLBI · EXPRESSION THERAPEUTICS · PI DOERING, CHRISTOPHER BRADLEY, SPENCER, H TRENT · 2009 to 2010
$1.1M
Bone Marrow-Derived Stem Cell Therapy of Hemophilia AR21HL084132 · NHLBI · EMORY UNIVERSITY · PI DOERING, CHRISTOPHER BRADLEY · 2007 to 2008
$421k
Ex Vivo Gene Therapy of Hemophilia AR41HL083531 · NHLBI · EXPRESSION THERAPEUTICS · PI DOERING, CHRISTOPHER BRADLEY · 2006 to 2006
$100k
NHLBI NIH HHS HL083531NHLBI NIH HHS HL084132
6 · The paper itself

Abstract

Successful gene therapy of hemophilia A depends on the sustained expression of therapeutic levels of factor VIII (fVIII). Because of mRNA instability, interactions with resident endoplasmic reticulum (ER) chaperones, and the requirement for carbohydrate-facilitated transport from the ER to the Golgi apparatus, fVIII is expressed at much lower levels from mammalian cells than other proteins of similar size and complexity. A number of bioengineered forms of B domain-deleted (BDD) human fVIII have been generated and shown to have enhanced expression. Previously, we demonstrated that recombinant BDD porcine fVIII exhibits high-level expression due to specific sequence elements that increase biosynthesis via enhanced posttranslational transit through the secretory pathway. In the current study, high-expression recombinant fVIII constructs were compared directly in order to determine the relative expression of the various bioengineered fVIII transgenes. The data demonstrate that BDD porcine fVIII expression is superior to that of any of the human fVIII variant constructs tested. Mean fVIII expression of 18 units/10(6) cells/24 hr was observed from HEK-293 cells expressing a single copy of the porcine fVIII transgene, which was 36- to 225-fold greater than that of any human fVIII transgene tested. Furthermore, greater than 10-fold higher expression was observed in human cells transduced with BDD porcine fVIII versus BDD human fVIII-encoding lentiviral vectors, even at low proviral copy numbers, supporting its use over other human fVIII variants in future hemophilia A gene therapy clinical trials.

Indexed as

Genetic TherapyAnimalsCell LineFactor VIIIGenetic VectorsGene Transfer TechniquesHematopoietic Stem CellsHemophilia AHumansMiceMice, Inbred C57BLProtein Structure, TertiarySequence DeletionSwineTransduction, GeneticTransfectionFactor VIII

Identifiers

PMID19222367
PMCPMC2828624
OpenAlexW2028813295

What OpenQuestion holds

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Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.