Evidence map›Paper›PMID 16539700›Full record

ArticleVirology journal2006

Multicistronic lentiviral vectors containing the FMDV 2A cleavage factor demonstrate robust expression of encoded genes at limiting MOI.

Dhanalakshmi Chinnasamy, Michael D Milsom, James Shaffer, James Neuenfeldt, Aimen F Shaaban, Geoffrey P Margison, Leslie J Fairbairn, Nachimuthu Chinnasamy

Open access · goldAbstract read
In one paragraph

Article in Virology journal, 2006. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed
5.4field-weighted citation impact, top 4% 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

41 citing papers in PubMed, 81 citations in OpenAlex.

  1. Article
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  8. Synthetic polycistronic sequences in eukaryotes.Synthetic and systems biotechnology · 2021
    Review
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  18. Osteogenesis induced in goat bone marrow progenitor cells by recombinant adenovirus coexpressing bone morphogenetic protein 2 and basic fibroblast growth factor.Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologica · 2013
    Article
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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

8 authors at 5 institutions in 2 countries.

Dhanalakshmi ChinnasamyVince Lombardi Gene Therapy Laboratory, Immunotherapy Program, Aurora St. Luke's Medical Center, Milwaukee, WI 53215, USA. dhana.chinnasamy@aurora.org
Michael D Milsom
James Shaffer
James Neuenfeldt
Aimen F Shaaban
Geoffrey P Margison
Leslie J Fairbairn
Nachimuthu Chinnasamy
Aurora St. Luke's Medical Center · USCancer Research UK Manchester Institute · GBVince Lombardi Cancer Clinic · USCancer Research UK · GBUniversity of Wisconsin–Madison · US

Funding

NHLBI NIH HHS L40 HL074921
6 · The paper itself

Abstract

backgroundA number of gene therapy applications would benefit from vectors capable of expressing multiple genes. In this study we explored the feasibility and efficiency of expressing two or three transgenes in HIV-1 based lentiviral vector. Bicistronic and tricistronic self-inactivating lentiviral vectors were constructed employing the internal ribosomal entry site (IRES) sequence of encephalomyocarditis virus (EMCV) and/or foot-and-mouth disease virus (FMDV) cleavage factor 2A. We employed enhanced green fluorescent protein (eGFP), O6-methylguanine-DNA-methyltransferase (MGMT), and homeobox transcription factor HOXB4 as model genes and their expression was detected by appropriate methods including fluorescence microscopy, flow cytometry, immunocytochemistry, biochemical assay, and western blotting.

resultsAll the multigene vectors produced high titer virus and were able to simultaneously express two or three transgenes in transduced cells. However, the level of expression of individual transgenes varied depending on: the transgene itself; its position within the construct; the total number of transgenes expressed; the strategy used for multigene expression and the average copy number of pro-viral insertions. Notably, at limiting MOI, the expression of eGFP in a bicistronic vector based on 2A was approximately 4 times greater than that of an IRES based vector.

conclusionThe small and efficient 2A sequence can be used alone or in combination with an IRES for the construction of multicistronic lentiviral vectors which can express encoded transgenes at functionally relevant levels in cells containing an average of one pro-viral insert.

Indexed as

Encephalomyocarditis virusFoot-and-Mouth Disease VirusGenetic TherapyGenetic VectorsGreen Fluorescent ProteinsHeLa CellsHomeodomain ProteinsHumansK562 CellsLentivirusO(6)-Methylguanine-DNA MethyltransferaseRibosomesTranscription FactorsTransgenesenhanced green fluorescent proteinGreen Fluorescent ProteinsHomeodomain ProteinsHOXB4 protein, humanO(6)-Methylguanine-DNA MethyltransferaseTranscription Factors

Identifiers

PMID16539700
PMCPMC1459112
OpenAlexW1617966098

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.