Evidence map›Paper›PMID 21828091›Full record

ArticleDevelopment (Cambridge, England)2011

Satellite cells, connective tissue fibroblasts and their interactions are crucial for muscle regeneration.

Malea M Murphy, Jennifer A Lawson, Sam J Mathew, David A Hutcheson, Gabrielle Kardon

Abstract read
In one paragraph

Article in Development (Cambridge, England), 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 737 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
737citing papers in PubMed, 1 pooled it
24.0field-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

737 citing papers in PubMed, 1 synthesis or guideline pooled it, 1,221 citations in OpenAlex.

  1. Pooled it
  2. Trial
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  10. A who's who of cell types in skeletal muscle.Communications biology · 2026
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  15. Myonuclear Dynamics After Skeletal Muscle Surgical Injury.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2026
    Article
  16. Elevated mitochondrial CaStem cell reports · 2026
    Article
  17. Article
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  19. Review
  20. Article

677 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 1 institution in 1 country.

Malea M MurphyDepartment of Human Genetics, University of Utah, 15 North 2030 East, Salt Lake City, UT 84112, USA.
Jennifer A Lawson
Sam J Mathew
David A Hutcheson
Gabrielle Kardon
University of Utah · US

Funding

TRAINING PROGRAM IN GENETICST32GM007464 · NIGMS · UNIVERSITY OF UTAH · PI GRUNWALD, DAVID J., STANFIELD, GILLIAN · 1985 to 2020
$6.1M
Role of Muscle Connective Tissue in Muscle and Tendon DevelopmentR01HD053728 · NICHD · UNIVERSITY OF UTAH · PI KARDON, GABRIELLE · 2006 to 2016
$3.1M
NICHD NIH HHS R01 HD053728NIGMS NIH HHS T32 GM007464NIGMS NIH HHS T32 GM07464
6 · The paper itself

Abstract

Muscle regeneration requires the coordinated interaction of multiple cell types. Satellite cells have been implicated as the primary stem cell responsible for regenerating muscle, yet the necessity of these cells for regeneration has not been tested. Connective tissue fibroblasts also are likely to play a role in regeneration, as connective tissue fibrosis is a hallmark of regenerating muscle. However, the lack of molecular markers for these fibroblasts has precluded an investigation of their role. Using Tcf4, a newly identified fibroblast marker, and Pax7, a satellite cell marker, we found that after injury satellite cells and fibroblasts rapidly proliferate in close proximity to one another. To test the role of satellite cells and fibroblasts in muscle regeneration in vivo, we created Pax7(CreERT2) and Tcf4(CreERT2) mice and crossed these to R26R(DTA) mice to genetically ablate satellite cells and fibroblasts. Ablation of satellite cells resulted in a complete loss of regenerated muscle, as well as misregulation of fibroblasts and a dramatic increase in connective tissue. Ablation of fibroblasts altered the dynamics of satellite cells, leading to premature satellite cell differentiation, depletion of the early pool of satellite cells, and smaller regenerated myofibers. Thus, we provide direct, genetic evidence that satellite cells are required for muscle regeneration and also identify resident fibroblasts as a novel and vital component of the niche regulating satellite cell expansion during regeneration. Furthermore, we demonstrate that reciprocal interactions between fibroblasts and satellite cells contribute significantly to efficient, effective muscle regeneration.

Indexed as

AnimalsBasic Helix-Loop-Helix Leucine Zipper Transcription FactorsCell DifferentiationCells, CulturedConnective TissueFibroblastsFlow CytometryFluorescent Antibody TechniqueMiceMice, TransgenicMuscle DevelopmentPAX7 Transcription FactorPolymerase Chain ReactionSatellite Cells, Skeletal MuscleTranscription Factor 4Basic Helix-Loop-Helix Leucine Zipper Transcription FactorsPAX7 protein, humanPAX7 Transcription FactorTcf4 protein, mouseTranscription Factor 4

Identifiers

PMID21828091
PMCPMC3152921
OpenAlexW2025957803

What OpenQuestion holds

Textmetadata
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.