Evidence map›Paper›PMID 12609052›Full record

ArticleBMC biotechnology2003

Retrofitting BACs with G418 resistance, luciferase, and oriP and EBNA-1 - new vectors for in vitro and in vivo delivery.

Christine Magin-Lachmann, George Kotzamanis, Leonardo D'Aiuto, Ernst Wagner, Clare Huxley

Open access · goldAbstract read
In one paragraph

Article in BMC biotechnology, 2003. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.9field-weighted citation impact, top 15% 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

12 citing papers in PubMed, 36 citations in OpenAlex.

  1. Article
  2. Herpesvirus BACs: past, present, and future.Journal of biomedicine & biotechnology · 2011
    Review
  3. Article
  4. Article
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  7. Formation of functional centromeric chromatin is specified epigenetically in Candida albicans.Proceedings of the National Academy of Sciences of the United States of America · 2006
    Article
  8. Review
  9. Review
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  12. 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

5 authors at 4 institutions in 3 countries.

Christine Magin-LachmannBoehringer Ingelheim Austria GmbH, A-1121 Vienna, Austria. christine_magin_lachmann@baxter.com
George Kotzamanis
Leonardo D'Aiuto
Ernst Wagner
Clare Huxley
Imperial College London · GBBoehringer Ingelheim (Austria) · ATLudwig-Maximilians-Universität München · DEWestern General Hospital · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundBacterial artificial chromosomes (BACs) have been used extensively for sequencing the human and mouse genomes and are thus readily available for most genes. The large size of BACs means that they can generally carry intact genes with all the long range controlling elements that drive full levels of tissue-specific expression. For gene expression studies and gene therapy applications it is useful to be able to retrofit the BACs with selectable genes such as G418 resistance, reporter genes such as luciferase, and oriP/EBNA-1 from Epstein Barr virus which allows long term episomal maintenance in mammalian cells.

resultsWe describe a series of retrofitting plasmids and a protocol for in vivo loxP/Cre recombination. The vector pRetroNeo carries a G418 resistance cassette, pRetroNeoLuc carries G418 resistance and a luciferase expression cassette, pRetroNeoLucOE carries G418 resistance, luciferase and an oriP/EBNA-1 cassette and pRetroNeoOE carries G418 resistance and oriP/EBNA-1. These vectors can be efficiently retrofitted onto BACs without rearrangement of the BAC clone. The luciferase cassette is expressed efficiently from the retrofitting plasmids and from retrofitted BACs after transient transfection of B16F10 cells in tissue culture and after electroporation into muscles of BALB/c mice in vivo. We also show that a BAC carrying GFP, oriP and EBNA-1 can be transfected into B16F10 cells with Lipofectamine 2000 and can be rescued intact after 5 weeks.

conclusionThe pRetro vectors allow efficient retrofitting of BACs with G418 resistance, luciferase and/or oriP/EBNA-1 using in vivo expression of Cre. The luciferase reporter gene is expressed after transient transfection of retrofitted BACs into cells in tissue culture and after electroporation into mouse muscle in vivo. OriP/EBNA-1 allows stable maintenance of a 150-kb BAC without rearrangement for at least 5 weeks.

Indexed as

Chromosomes, Artificial, BacterialGene Transfer TechniquesAnimalsBiotechnologyCell Line, TumorElectrophoresis, Agar GelElectroporationEpstein-Barr Virus Nuclear AntigensEscherichia coliGenes, ReporterGenetic TherapyGenetic VectorsGentamicinsIn Vitro TechniquesLuciferasesMelanoma, Experimentalantibiotic G 418EBV-encoded nuclear antigen 1Epstein-Barr Virus Nuclear AntigensGentamicinsLuciferases

Identifiers

PMID12609052
PMCPMC150596
OpenAlexW1880994641

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.