Evidence map›Paper›PMID 25854148›Full record

ArticleThe Journal of physiology2015

Genetic disruption of Smad7 impairs skeletal muscle growth and regeneration.

Tatiana V Cohen, Helen D Kollias, Naili Liu, Christopher W Ward, Kathryn R Wagner

Open access · greenAbstract read
In one paragraph

Article in The Journal of physiology, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.

0numbers the graph read from it
0cells of the map it votes in
24citing papers in PubMed
2.3field-weighted citation impact, top 12% 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

24 citing papers in PubMed, 43 citations in OpenAlex.

  1. Article
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  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Kinin receptors regulate skeletal muscle regeneration: differential effects for B1 and B2 receptors.Inflammation research : official journal of the European Histamine Research Society ... [et al.] · 2023
    Article
  11. Article
  12. Review
  13. Article
  14. Article
  15. Regulation of Myostatin on the Growth and Development of Skeletal Muscle.Frontiers in cell and developmental biology · 2021
    Review
  16. Nutrients · 2020
    Article
  17. Article
  18. Article
  19. Article
  20. Regulation of TGF-β Family Signaling by Inhibitory Smads.Cold Spring Harbor perspectives in biology · 2017
    Review
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 3 institutions in 1 country.

Tatiana V CohenCentre for Genetic Muscle Disorders, Hugo W. Moser Research Institute at Kennedy Krieger, Baltimore, MD, USA.
Helen D KolliasCentre for Genetic Muscle Disorders, Hugo W. Moser Research Institute at Kennedy Krieger, Baltimore, MD, USA.
Naili LiuCentre for Genetic Muscle Disorders, Hugo W. Moser Research Institute at Kennedy Krieger, Baltimore, MD, USA.
Christopher W WardDepartment of Orthopedics, School of Medicine, University of Maryland, Baltimore, MD, USA.
Kathryn R WagnerCentre for Genetic Muscle Disorders, Hugo W. Moser Research Institute at Kennedy Krieger, Baltimore, MD, USA.
Kennedy Krieger Institute · USJohns Hopkins University · USUniversity of Maryland, Baltimore · US

Funding

Institute for Clinical and Translational ResearchUL1TR001079 · NCATS · JOHNS HOPKINS UNIVERSITY · PI FORD, DANIEL ERNEST · 2013 to 2017
$60.1M
NCATS NIH HHS 1UL1TR001079
6 · The paper itself

Abstract

key pointsSmad7 is an intracellular antagonist of transforming growth factor-β signalling pathways and modulates muscle growth in vivo. Loss of Smad7 results in decreased muscle mass, reduced force generation, fibre type switching from glycolytic towards oxidative type and delayed recovery from injury. Upregulated Smad2/3 signalling in Smad7(-/-) muscle results in reduced myoblast proliferation and differentiation. Smad7 is an important regulator of muscle growth and may be a potential intracellular therapeutic target for muscle disorders. ABSTRACT: The transforming growth factor-β (TGF-β) family of growth factors plays an essential role in mediating cellular growth and differentiation. Myostatin is a muscle-specific member of the TGF-β superfamily and a negative regulator of muscle growth. Myostatin inhibitors are currently being pursued as therapeutic options for muscle disorders. Smad7 inhibits intracellular myostatin signalling via Smad2/3, and thus presents a means of regulating myostatin and potentiating muscle growth. We investigated the functional loss of Smad7 on muscle in vivo by examining muscle growth and differentiation in mice deficient in Smad7 (Smad7(-/-) ). Smad7(-/-) mice showed reduced muscle mass, hypotrophy and hypoplasia of muscle fibres, as well as an increase in oxidative fibre types. Examination of muscle strength showed reduced force generation in vivo and ex vivo compared to wild-type controls. Analysis of muscle regeneration showed a delay in recovery, probably as a result of decreased activation, proliferation and differentiation of satellite cells, as confirmed in vitro. Additionally, myostatin expression was upregulated in Smad7(-/-) muscle. Our findings suggest that increased Smad2/3 signalling in the absence of Smad7 inhibition impedes muscle growth and regeneration. Taken together, our experiments demonstrate that Smad7 is an important mediator of muscle growth in vivo. Our studies enhance our understanding of in vivo TGF-β pathway modulation and suggest that Smad7 may be an important therapeutic target for muscle disorders.

Indexed as

Muscle DevelopmentAnimalsCell DifferentiationCell ProliferationCells, CulturedFemaleMaleMice, KnockoutMuscle, SkeletalMuscle StrengthMyoblastsRegenerationSmad7 ProteinSmad7 ProteinSmad7 protein, mouse

Identifiers

PMID25854148
PMCPMC4461410
OpenAlexW2146551644

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.