Evidence map›Paper›PMID 21502976›Full record

ArticleCell research2011

Smad3 signaling is required for satellite cell function and myogenic differentiation of myoblasts.

Xiaojia Ge, Craig McFarlane, Anuradha Vajjala, Sudarsanareddy Lokireddy, Zhi Hui Ng, Chek Kun Tan, Nguan Soon Tan, Walter Wahli, Mridula Sharma, Ravi Kambadur

Open access · bronzeAbstract read
In one paragraph

Article in Cell research, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
54citing papers in PubMed, 1 pooled it
4.1field-weighted citation impact, top 5% 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

54 citing papers in PubMed, 1 synthesis or guideline pooled it, 101 citations in OpenAlex.

  1. Pooled it
  2. BetaThe Journal of physiology · 2018
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  13. Enhanced Muscle Fibers ofInternational journal of molecular sciences · 2022
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  17. Inhibition ofFrontiers in cell and developmental biology · 2021
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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

10 authors at 4 institutions in 3 countries.

Xiaojia GeSchool of Biological Sciences, Nanyang Technological University, 60 Nanyang Drive, Singapore.
Craig McFarlane
Anuradha Vajjala
Sudarsanareddy Lokireddy
Zhi Hui Ng
Chek Kun Tan
Nguan Soon Tan
Walter Wahli
Mridula Sharma
Ravi Kambadur
Nanyang Technological University · SGAgency for Science, Technology and Research · SGNational University of Singapore · SGUniversity of Lausanne · CH

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

TGF-β and myostatin are the two most important regulators of muscle growth. Both growth factors have been shown to signal through a Smad3-dependent pathway. However to date, the role of Smad3 in muscle growth and differentiation is not investigated. Here, we demonstrate that Smad3-null mice have decreased muscle mass and pronounced skeletal muscle atrophy. Consistent with this, we also find increased protein ubiquitination and elevated levels of the ubiquitin E3 ligase MuRF1 in muscle tissue isolated from Smad3-null mice. Loss of Smad3 also led to defective satellite cell (SC) functionality. Smad3-null SCs showed reduced propensity for self-renewal, which may lead to a progressive loss of SC number. Indeed, decreased SC number was observed in skeletal muscle from Smad3-null mice showing signs of severe muscle wasting. Further in vitro analysis of primary myoblast cultures identified that Smad3-null myoblasts exhibit impaired proliferation, differentiation and fusion, resulting in the formation of atrophied myotubes. A search for the molecular mechanism revealed that loss of Smad3 results in increased myostatin expression in Smad3-null muscle and myoblasts. Given that myostatin is a negative regulator, we hypothesize that increased myostatin levels are responsible for the atrophic phenotype in Smad3-null mice. Consistent with this theory, inactivation of myostatin in Smad3-null mice rescues the muscle atrophy phenotype.

Indexed as

Cell DifferentiationSignal TransductionAnimalsCell ProliferationCells, CulturedInsulin-Like Growth Factor IMiceMice, KnockoutMuscle ProteinsMuscular AtrophyMyoblastsMyostatinOligopeptidesPhenotypeProteasome Endopeptidase ComplexProteasome InhibitorsepoxomicinInsulin-Like Growth Factor IMuscle ProteinsMyostatinOligopeptidesProteasome Endopeptidase ComplexProteasome InhibitorsSmad3 ProteinTrim63 protein, mouseTripartite Motif ProteinsUbiquitin-Protein Ligases

Identifiers

PMID21502976
PMCPMC3364732
OpenAlexW2048424792

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.