Evidence map›Paper›PMID 21081907›Full record

ArticleMolecular therapy : the journal of the American Society of Gene Therapy2011

Lentiviral vector platform for production of bioengineered recombinant coagulation factor VIII.

H Trent Spencer, Gabriela Denning, Richard E Gautney, Boro Dropulic, Andre J Roy, Lajos Baranyi, Bagirath Gangadharan, Ernest T Parker, Pete Lollar, Christopher B Doering

Open access · bronzeAbstract read
In one paragraph

Article in Molecular therapy : the journal of the American Society of Gene Therapy, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.

0numbers the graph read from it
0cells of the map it votes in
31citing papers in PubMed
2.6field-weighted citation impact, top 10% 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

31 citing papers in PubMed, 59 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Recombinant Expression of Complex Proteins in Human Cell Lines.Methods in molecular biology (Clifton, N.J.) · 2022
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Production of Therapeutic Enzymes by Lentivirus Transgenesis.Advances in experimental medicine and biology · 2019
    Review
  13. Article
  14. Target-Cell-Directed Bioengineering Approaches for Gene Therapy of Hemophilia A.Molecular therapy. Methods & clinical development · 2018
    Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. 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

10 authors at 4 institutions in 1 country.

H Trent SpencerDepartment of Pediatrics, Emory University School of Medicine and Children's Healthcare of Atlanta, Atlanta, GA, USA.
Gabriela Denning
Richard E Gautney
Boro Dropulic
Andre J Roy
Lajos Baranyi
Bagirath Gangadharan
Ernest T Parker
Pete Lollar
Christopher B Doering
Children's Healthcare of Atlanta · USLentigen Technology (United States) · USEmory University · USExpression Therapeutics (United States) · US

Funding

Bioengineered factor VIII gene therapy for hemophilia AR44HL114241 · NHLBI · EXPRESSION THERAPEUTICS · PI DENNING, GABRIELA, DOERING, CHRISTOPHER BRADLEY · 2014 to 2015
$1.5M
High Expression Recombinant Factor VIIIR42HL090112 · NHLBI · EXPRESSION THERAPEUTICS · PI DOERING, CHRISTOPHER BRADLEY · 2010 to 2011
$1.5M
High Expression Recombinant Factor VIIIR41HL090112 · NHLBI · EXPRESSION THERAPEUTICS · PI DOERING, CHRISTOPHER BRADLEY · 2008 to 2008
$100k
NHLBI NIH HHS HL090112NHLBI NIH HHS R41 HL090112NHLBI NIH HHS R42 HL090112NHLBI NIH HHS R44 HL114241
6 · The paper itself

Abstract

Patients with hemophilia A present with spontaneous and sometimes life-threatening bleeding episodes that are treated using blood coagulation factor VIII (fVIII) replacement products. Although effective, these products have limited availability worldwide due to supply limitations and product costs, which stem largely from manufacturing complexity. Current mammalian cell culture manufacturing systems yield around 100 µg/l of recombinant fVIII, with a per cell production rate of 0.05 pg/cell/day, representing 10,000-fold lesser production than is achieved for other similar-sized recombinant proteins (e.g. monoclonal antibodies). Expression of human fVIII is rate limited by inefficient transport through the cellular secretory pathway. Recently, we discovered that the orthologous porcine fVIII possesses two distinct sequence elements that enhance secretory transport efficiency. Herein, we describe the development of a bioengineered fVIII product using a novel lentiviral-driven recombinant protein manufacturing platform. The combined implementation of these technologies yielded production cell lines that biosynthesize in excess of 2.5 mg/l of recombinant fVIII at the rate of 9 pg/cell/day, which is the highest level of recombinant fVIII production reported to date, thereby validating the utility of both technologies.

Indexed as

AnimalsBioengineeringCell LineCricetinaeFactor VIIIGenetic VectorsHumansLentivirusRecombinant ProteinsFactor VIIIRecombinant Proteins

Identifiers

PMID21081907
PMCPMC3034847
OpenAlexW2079827600

What OpenQuestion holds

Textmetadata
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.