Evidence map›Paper›PMID 26569381›Full record

ArticleNature medicine2015

Dystrophin expression in muscle stem cells regulates their polarity and asymmetric division.

Nicolas A Dumont, Yu Xin Wang, Julia von Maltzahn, Alessandra Pasut, C Florian Bentzinger, Caroline E Brun, Michael A Rudnicki

Open access · greenAbstract read
In one paragraph

Article in Nature medicine, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 372 papers.

0numbers the graph read from it
0cells of the map it votes in
372citing papers in PubMed
21.4field-weighted citation impact, top 1% 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

372 citing papers in PubMed, 580 citations in OpenAlex.

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  18. bioRxiv : the preprint server for biology · 2026
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312 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

7 authors at 2 institutions in 1 country.

Nicolas A DumontSprott Center for Stem Cell Research, Ottawa Hospital Research Institute, Regenerative Medicine Program, Ottawa, Ontario, Canada.
Yu Xin WangSprott Center for Stem Cell Research, Ottawa Hospital Research Institute, Regenerative Medicine Program, Ottawa, Ontario, Canada.
Julia von MaltzahnSprott Center for Stem Cell Research, Ottawa Hospital Research Institute, Regenerative Medicine Program, Ottawa, Ontario, Canada.
Alessandra PasutSprott Center for Stem Cell Research, Ottawa Hospital Research Institute, Regenerative Medicine Program, Ottawa, Ontario, Canada.
C Florian BentzingerSprott Center for Stem Cell Research, Ottawa Hospital Research Institute, Regenerative Medicine Program, Ottawa, Ontario, Canada.
Caroline E BrunSprott Center for Stem Cell Research, Ottawa Hospital Research Institute, Regenerative Medicine Program, Ottawa, Ontario, Canada.
Michael A RudnickiSprott Center for Stem Cell Research, Ottawa Hospital Research Institute, Regenerative Medicine Program, Ottawa, Ontario, Canada.
Ottawa Hospital · CAUniversity of Ottawa · CA

Funding

GENETIC REGULATION OF SKELETAL MUSCLE REPAIRR01AR044031 · NIAMS · OTTAWA HOSPITAL RESEARCH INSTITUTE · PI RUDNICKI, MICHAEL A · 1996 to 2025
$5.6M
Canadian Institutes of Health Research MOP-12080Canadian Institutes of Health Research MOP-81288NIAMS NIH HHS R01 AR044031NIAMS NIH HHS R01AR044031
6 · The paper itself

Abstract

Dystrophin is expressed in differentiated myofibers, in which it is required for sarcolemmal integrity, and loss-of-function mutations in the gene that encodes it result in Duchenne muscular dystrophy (DMD), a disease characterized by progressive and severe skeletal muscle degeneration. Here we found that dystrophin is also highly expressed in activated muscle stem cells (also known as satellite cells), in which it associates with the serine-threonine kinase Mark2 (also known as Par1b), an important regulator of cell polarity. In the absence of dystrophin, expression of Mark2 protein is downregulated, resulting in the inability to localize the cell polarity regulator Pard3 to the opposite side of the cell. Consequently, the number of asymmetric divisions is strikingly reduced in dystrophin-deficient satellite cells, which also display a loss of polarity, abnormal division patterns (including centrosome amplification), impaired mitotic spindle orientation and prolonged cell divisions. Altogether, these intrinsic defects strongly reduce the generation of myogenic progenitors that are needed for proper muscle regeneration. Therefore, we conclude that dystrophin has an essential role in the regulation of satellite cell polarity and asymmetric division. Our findings indicate that muscle wasting in DMD not only is caused by myofiber fragility, but also is exacerbated by impaired regeneration owing to intrinsic satellite cell dysfunction.

Indexed as

Asymmetric Cell DivisionCell PolarityAnimalsCell Cycle ProteinsCell ProliferationCell SeparationDystrophinFlow CytometryMice, Inbred mdxMuscle, SkeletalOligonucleotide Array Sequence AnalysisProtein BindingProtein Serine-Threonine KinasesRegenerationSatellite Cells, Skeletal MuscleSpindle ApparatusCell Cycle ProteinsDystrophinMark2 protein, mouseProtein Serine-Threonine Kinases

Identifiers

PMID26569381
PMCPMC4839960
OpenAlexW2194012442

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.