Evidence map›Paper›PMID 21753795›Full record

ArticleGene therapy2012

Scale-up and manufacturing of clinical-grade self-inactivating γ-retroviral vectors by transient transfection.

J C M van der Loo, W P Swaney, E Grassman, A Terwilliger, T Higashimoto, A Schambach, C Baum, A J Thrasher, D A Williams, D L Nordling and 2 more

Abstract read
In one paragraph

Article in Gene therapy, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
–field-weighted citation impact
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

19 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Review
  6. Article
  7. Review
  8. Generation of High-Titer Self-Inactivated γ-Retroviral Vector Producer Cells.Molecular therapy. Methods & clinical development · 2019
    Article
  9. Review
  10. Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Review
  16. Article
  17. Curing genetic disease with gene therapy.Transactions of the American Clinical and Climatological Association · 2014
    Article
  18. Article
  19. Gene Therapy.Advances in biochemical engineering/biotechnology
    Review
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

12 authors.

J C M van der LooDivision of Experimental Hematology and Cancer Biology, Cincinnati Children's Hospital Medical Center, Cincinnati, OH 45229-3039, USA. Han.vanderloo@cchmc.org
W P Swaney
E Grassman
A Terwilliger
T Higashimoto
A Schambach
C Baum
A J Thrasher
D A Williams
D L Nordling
L Reeves
P Malik

Funding

Cincinnati Center for Clinical and Translational Sciences and TrainingUL1TR000077 · NCATS · UNIVERSITY OF CINCINNATI · PI HEUBI, JAMES E. · 2012 to 2014
$9.9M
Gene Therapy for SCID-X1 using a self-inactivating (SIN) gammaretroviral vectorU01AI087628 · NIAID · BOSTON CHILDREN'S HOSPITAL · PI WILLIAMS, DAVID A · 2010 to 2014
$4.6M
Medical Research Council G0501969NCATS NIH HHS UL1 TR000077NIAID NIH HHS U01 AI087628Wellcome Trust 090233
6 · The paper itself

Abstract

The need for γ-retroviral (gRV) vectors with a self-inactivating (SIN) design for clinical application has prompted a shift in methodology of vector manufacturing from the traditional use of stable producer lines to transient transfection-based techniques. Herein, we set out to define and optimize a scalable manufacturing process for the production of gRV vectors using transfection in a closed-system bioreactor in compliance with current good manufacturing practices (cGMP). The process was based on transient transfection of 293T cells on Fibra-Cel disks in the Wave Bioreactor. Cells were harvested from tissue culture flasks and transferred to the bioreactor containing Fibra-Cel in the presence of vector plasmid, packaging plasmids and calcium-phosphate in Dulbecco's modified Eagle's medium and 10% fetal bovine serum. Virus supernatant was harvested at 10-14 h intervals. Using optimized procedures, a total of five ecotropic cGMP-grade gRV vectors were produced (9 liters each) with titers up to 3.6 × 10(7) infectious units per milliliter on 3T3 cells. One GMP preparation of vector-like particles was also produced. These results describe an optimized process for the generation of SIN viral vectors by transfection using a disposable platform that allows for the generation of clinical-grade viral vectors without the need for cleaning validation in a cost-effective manner.

Indexed as

BioreactorsAnimalsBatch Cell Culture TechniquesBiotechnologyCell LineGammaretrovirusGenetic VectorsHumansMiceQuality ControlTransfection

Identifiers

PMID21753795
PMCPMC4167414

What OpenQuestion holds

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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.