Evidence map›Paper›PMID 20220783›Full record

ArticleGene therapy2010

Organ-specific shifts in mtDNA heteroplasmy following systemic delivery of a mitochondria-targeted restriction endonuclease.

S R Bacman, S L Williams, S Garcia, C T Moraes

Open access · greenAbstract read
In one paragraph

Article in Gene therapy, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 55 papers.

0numbers the graph read from it
0cells of the map it votes in
55citing 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

55 citing papers in PubMed, 103 citations in OpenAlex.

  1. Review
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  11. mitoTALEN reduces the mutant mtDNA load in neurons.Molecular therapy. Nucleic acids · 2024
    Article
  12. Article
  13. Article
  14. Review
  15. Mitochondrial genome engineering coming-of-age.Trends in genetics : TIG · 2022
    Review
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  20. 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

4 authors at 1 institution in 1 country.

S R BacmanDepartment of Neurology, University of Miami School of Medicine, Miami, FL 33136, USA.
S L Williams
S Garcia
C T Moraes
University of Miami · US

Funding

Shared Equipment ModuleP30EY014801 · NEI · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI Victor L Perez · 2004 to 2026
$12.2M
SETTING THE STAGE FOR REPLACEMENT OF MITOCHONDRIAL GENESR01EY010804 · NEI · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI MORAES, CARLOS TORRES · 1995 to 2025
$9.4M
Mouse Models with Defective Respiratory Complexes in CNSR01NS041777 · NINDS · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI MORAES, CARLOS TORRES · 2001 to 2009
$2.4M
OXIDATIVE PHOSPHORYLATION IN CELL GROWTH AND DEATHR01CA085700 · NCI · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI MORAES, CARLOS TORRES · 2001 to 2010
$2.2M
Mouse Models of Mitochondrial EncephalomyopathiesR56NS041777 · NINDS · UNIVERSITY OF MIAMI SCHOOL OF MEDICINE · PI MORAES, CARLOS TORRES · 2010 to 2010
$445k
NCI NIH HHS CA85700NCI NIH HHS R01 CA085700NEI NIH HHS 5P30EY014801-07NEI NIH HHS EY10804NEI NIH HHS R01 EY010804NINDS NIH HHS NS041777NINDS NIH HHS R01 NS041777NINDS NIH HHS R56 NS041777
6 · The paper itself

Abstract

Most pathogenic mtDNA mutations are heteroplasmic and there is a clear correlation between high levels of mutated mtDNA in a tissue and pathology. We have found that in vivo double-strand breaks (DSBs) in mtDNA lead to digestion of cleaved mtDNA and replication of residual mtDNA. Therefore, if DSB could be targeted to mutations in mtDNA, mutant genomes could be eliminated and the wild-type mtDNA would repopulate the cells. This can be achieved by using mitochondria-targeted restriction endonucleases as a means to degrade specific mtDNA haplotypes in heteroplasmic cells or tissues. In this work, we investigated the potential of systemic delivery of mitochondria-targeted restriction endonucleases to reduce the proportion of mutant mtDNA in specific tissues. Using the asymptomatic NZB/BALB mtDNA heteroplasmic mouse as a model, we found that a mitochondria-targeted ApaLI (that cleaves BALB mtDNA at a single site and does not cleave NZB mtDNA) increased the proportion of NZB mtDNA in target tissues. This was observed in heart, using a cardiotropic adeno-associated virus type-6 (AAV6) and in liver, using the hepatotropic adenovirus type-5 (Ad5). No mtDNA depletion or loss of cytochrome c oxidase activity was observed in any of these tissues. These results show the potential of systemic delivery of viral vectors to specific organs for the therapeutic application of mitochondria-targeted restriction enzymes in mtDNA disorders.

Indexed as

Drug Delivery SystemsMitochondria, HeartAnimalsChimeraDependovirusDNA Breaks, Double-StrandedDNA, MitochondrialDNA Restriction EnzymesGenetic VectorsMiceMice, Inbred BALB CMice, Inbred NZBMutationOrgan SpecificityDNA, MitochondrialDNA Restriction Enzymes

Identifiers

PMID20220783
PMCPMC3175591
OpenAlexW2066354939

What OpenQuestion holds

Textmetadata
LicenceTDM
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.