Evidence map›Paper›PMID 28346436›Full record

ArticleGene therapy2017

Detailed comparison of retroviral vectors and promoter configurations for stable and high transgene expression in human induced pluripotent stem cells.

D Hoffmann, J W Schott, F K Geis, L Lange, F-J Müller, D Lenz, D Zychlinski, D Steinemann, M Morgan, T Moritz and 1 more

Abstract readComparative Study
PubMed Publisher
In one paragraph

Article in Gene therapy, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 39 papers.

0numbers the graph read from it
0cells of the map it votes in
39citing 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

39 citing papers in PubMed, 63 citations in OpenAlex.

  1. Article
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  7. Review
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  9. Article
  10. Human stem cell-specific epigenetic signatures control transgene expression.Biochimica et biophysica acta. Gene regulatory mechanisms · 2024
    Article
  11. Article
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  15. Development of anMolecular therapy. Methods & clinical development · 2023
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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

11 authors at 3 institutions in 2 countries.

D HoffmannInstitute of Experimental Hematology, Hannover Medical School, Hannover, Germany.
J W SchottInstitute of Experimental Hematology, Hannover Medical School, Hannover, Germany.
F K GeisInstitute of Experimental Hematology, Hannover Medical School, Hannover, Germany.
L LangeInstitute of Experimental Hematology, Hannover Medical School, Hannover, Germany.
F-J MüllerZentrum für Integrative Psychiatrie, University Hospital Schleswig-Holstein, Campus Kiel, Kiel, Germany.
D LenzInstitute of Experimental Hematology, Hannover Medical School, Hannover, Germany.
D ZychlinskiInstitute of Experimental Hematology, Hannover Medical School, Hannover, Germany.
D SteinemannInstitute of Cell and Molecular Pathology, Hannover Medical School, Hannover, Germany.
M MorganInstitute of Experimental Hematology, Hannover Medical School, Hannover, Germany.
T MoritzInstitute of Experimental Hematology, Hannover Medical School, Hannover, Germany.
A SchambachInstitute of Experimental Hematology, Hannover Medical School, Hannover, Germany.
Medizinische Hochschule Hannover · DEHarvard University · USUniversity Hospital Schleswig-Holstein · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Correction of patient-specific induced pluripotent stem cells (iPSC) upon gene delivery through retroviral vectors offers new treatment perspectives for monogenetic diseases. Gene-modified iPSC clones can be screened for safe integration sites and differentiated into transplantable cells of interest. However, the current bottleneck is epigenetic vector silencing. In order to identify the most suitable retroviral expression system in iPSC, we systematically compared vectors from different retroviral genera, different promoters and their combination with ubiquitous chromatin opening elements (UCOE), and several envelope pseudotypes. Lentiviral vectors (LV) pseudotyped with vesicular stomatitis virus glycoprotein were superior to gammaretroviral and alpharetroviral vectors and other envelopes tested. The elongation factor 1α short (EFS) promoter mediated the most robust expression, whereas expression levels were lower from the potent but more silencing-prone spleen focus forming virus (SFFV) promoter. Both full-length (A2UCOE) and minimal (CBX3) UCOE juxtaposed to two physiological and one viral promoter reduced transgene silencing with equal efficiency. However, a promoter-specific decline in expression levels was not entirely prevented. Upon differentiation of transgene-positive iPSC into endothelial cells, A2UCOE.EFS and CBX3.EFS vectors maintained highest transgene expression in a larger fraction of cells as compared with all other constructs tested here. The function of UCOE diminished, but did not fully counteract, vector silencing and possibilities for improvements remain. Nevertheless, the CBX3.EFS in a LV background exhibited the most promising promoter and vector configuration for both high titer production and long-term genetic modification of human iPSC and their progeny.

Indexed as

Promoter Regions, GeneticTransgenesCells, CulturedEndothelial CellsGene SilencingGenetic VectorsHeLa CellsHumansInduced Pluripotent Stem CellsPeptide Elongation Factor 1RetroviridaeTransfectionPeptide Elongation Factor 1

Identifiers

PMID28346436
OpenAlexW2602119675

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.