Evidence map›Paper›PMID 27466392›Full record

ArticleNucleic acids research2016

Near-complete elimination of mutant mtDNA by iterative or dynamic dose-controlled treatment with mtZFNs.

Payam A Gammage, Edoardo Gaude, Lindsey Van Haute, Pedro Rebelo-Guiomar, Christopher B Jackson, Joanna Rorbach, Marcin L Pekalski, Alan J Robinson, Marine Charpentier, Jean-Paul Concordet and 2 more

Open access · goldAbstract read
In one paragraph

Article in Nucleic acids research, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 81 papers.

0numbers the graph read from it
0cells of the map it votes in
81citing papers in PubMed
7.0field-weighted citation impact, top 3% 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

81 citing papers in PubMed, 120 citations in OpenAlex.

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  11. Therapies for Mitochondrial Disease: Past, Present, and Future.Journal of inherited metabolic disease · 2025
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21 more citing papers are in PubMed but not listed here.

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 at 5 institutions in 3 countries.

Payam A GammageMRC Mitochondrial Biology Unit, Cambridge, UK pag44@mrc-mbu.cam.ac.uk.
Edoardo GaudeMRC Cancer Unit, Cambridge, UK.
Lindsey Van HauteMRC Mitochondrial Biology Unit, Cambridge, UK.
Pedro Rebelo-GuiomarMRC Mitochondrial Biology Unit, Cambridge, UK GABBA, University of Porto, Portugal.
Christopher B JacksonMRC Mitochondrial Biology Unit, Cambridge, UK.
Joanna RorbachMRC Mitochondrial Biology Unit, Cambridge, UK.
Marcin L PekalskiJDRF/Wellcome Trust DIL, Cambridge Institute for Medical Research, University of Cambridge, UK.
Alan J RobinsonMRC Mitochondrial Biology Unit, Cambridge, UK.
Marine CharpentierINSERM U1154, CNRS UMR 7196, Muséum National d'Histoire Naturelle, Paris, France.
Jean-Paul ConcordetINSERM U1154, CNRS UMR 7196, Muséum National d'Histoire Naturelle, Paris, France.
Christian FrezzaMRC Cancer Unit, Cambridge, UK.
Michal MinczukMRC Mitochondrial Biology Unit, Cambridge, UK mam@mrc-mbu.cam.ac.uk.
MRC Mitochondrial Biology Unit · GBMRC Cancer Unit · GBMuséum national d'Histoire naturelle · FRUniversidade do Porto · PTWellcome Trust · GB

Funding

Medical Research Council MC_U105674181Medical Research Council MC_U105697135Medical Research Council MC_UU_12022/6
6 · The paper itself

Abstract

Mitochondrial diseases are frequently associated with mutations in mitochondrial DNA (mtDNA). In most cases, mutant and wild-type mtDNAs coexist, resulting in heteroplasmy. The selective elimination of mutant mtDNA, and consequent enrichment of wild-type mtDNA, can rescue pathological phenotypes in heteroplasmic cells. Use of the mitochondrially targeted zinc finger-nuclease (mtZFN) results in degradation of mutant mtDNA through site-specific DNA cleavage. Here, we describe a substantial enhancement of our previous mtZFN-based approaches to targeting mtDNA, allowing near-complete directional shifts of mtDNA heteroplasmy, either by iterative treatment or through finely controlled expression of mtZFN, which limits off-target catalysis and undesired mtDNA copy number depletion. To demonstrate the utility of this improved approach, we generated an isogenic distribution of heteroplasmic cells with variable mtDNA mutant level from the same parental source without clonal selection. Analysis of these populations demonstrated an altered metabolic signature in cells harbouring decreased levels of mutant m.8993T>G mtDNA, associated with neuropathy, ataxia, and retinitis pigmentosa (NARP). We conclude that mtZFN-based approaches offer means for mtDNA heteroplasmy manipulation in basic research, and may provide a strategy for therapeutic intervention in selected mitochondrial diseases.

Indexed as

Zinc FingersCell Line, TumorDNA, MitochondrialEndonucleasesFlow CytometryGene DosageHumansMitochondriaMutationRNA, CatalyticDNA, MitochondrialEndonucleaseshammerhead ribozymeRNA, Catalytic

Identifiers

PMID27466392
PMCPMC5027515
OpenAlexW2495541981

What OpenQuestion holds

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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.