Evidence map›Paper›PMID 18511461›Full record

ArticleNucleic acids research2008

Development of a single-chain, quasi-dimeric zinc-finger nuclease for the selective degradation of mutated human mitochondrial DNA.

Michal Minczuk, Monika A Papworth, Jeffrey C Miller, Michael P Murphy, Aaron Klug

Open access · goldAbstract read
In one paragraph

Article in Nucleic acids research, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 100 papers.

0numbers the graph read from it
0cells of the map it votes in
100citing papers in PubMed
4.7field-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

100 citing papers in PubMed, 210 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Review
  5. Review
  6. Therapies for Mitochondrial Disease: Past, Present, and Future.Journal of inherited metabolic disease · 2025
    Review
  7. Review
  8. Review
  9. Article
  10. Review
  11. Review
  12. Review
  13. Review
  14. Review
  15. mitoTALEN reduces the mutant mtDNA load in neurons.Molecular therapy. Nucleic acids · 2024
    Article
  16. Review
  17. Review
  18. Base editing of organellar DNA with programmable deaminases.Nature reviews. Molecular cell biology · 2024
    Review
  19. Article
  20. Research progress in mitochondrial gene editing technology.Zhejiang da xue xue bao. Yi xue ban = Journal of Zhejiang University. Medical sciences · 2023
    Article

40 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

5 authors at 2 institutions in 1 country.

Michal MinczukMRC Laboratory of Molecular Biology, Hills Road, Cambridge CB2 2QH, UK. michal.minczuk@mrc-dunn.cam.ac.uk
Monika A Papworth
Jeffrey C Miller
Michael P Murphy
Aaron Klug
MRC Laboratory of Molecular Biology · GBMRC Mitochondrial Biology Unit · GB

Funding

Medical Research Council MC_U105184324Medical Research Council MC_U105663142
6 · The paper itself

Abstract

The selective degradation of mutated mitochondrial DNA (mtDNA) molecules is a potential strategy to re-populate cells with wild-type (wt) mtDNA molecules and thereby alleviate the defective mitochondrial function that underlies mtDNA diseases. Zinc finger nucleases (ZFNs), which are nucleases conjugated to a zinc-finger peptide (ZFP) engineered to bind a specific DNA sequence, could be useful for the selective degradation of particular mtDNA sequences. Typically, pairs of complementary ZFNs are used that heterodimerize on the target DNA sequence; however, conventional ZFNs were ineffective in our system. To overcome this, we created single-chain ZFNs by conjugating two FokI nuclease domains, connected by a flexible linker, to a ZFP with an N-terminal mitochondrial targeting sequence. Here we show that these ZFNs are efficiently transported into mitochondria in cells and bind mtDNA in a sequence-specific manner discriminating between two 12-bp long sequences that differ by a single base pair. Due to their selective binding they cleave dsDNA at predicted sites adjacent to the mutation. When expressed in heteroplasmic cells containing a mixture of mutated and wt mtDNA these ZFNs selectively degrade mutated mtDNA, thereby increasing the proportion of wt mtDNA molecules in the cell. Therefore, mitochondria-targeted single-chain ZFNs are a promising candidate approach for the treatment of mtDNA diseases.

Indexed as

Point MutationZinc FingersCell LineDeoxyribonucleases, Type II Site-SpecificDimerizationDNA, MitochondrialGenetic VectorsHumansMitochondriaMitochondrial DiseasesMutationPeptidesProtein EngineeringDeoxyribonucleases, Type II Site-SpecificDNA, Mitochondrialendodeoxyribonuclease FokIPeptides

Identifiers

PMID18511461
PMCPMC2475635
OpenAlexW2162839691

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.