Evidence map›Paper›PMID 19732043›Full record

ArticleAging cell2009

Relative roles of TGF-beta1 and Wnt in the systemic regulation and aging of satellite cell responses.

Morgan E Carlson, Michael J Conboy, Michael Hsu, Laurel Barchas, Jaemin Jeong, Anshu Agrawal, Amanda J Mikels, Smita Agrawal, David V Schaffer, Irina M Conboy

Open access · bronzeAbstract read
In one paragraph

Article in Aging cell, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 133 papers.

0numbers the graph read from it
0cells of the map it votes in
133citing papers in PubMed
16.8field-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

133 citing papers in PubMed, 236 citations in OpenAlex.

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  16. We need to talk-how muscle stem cells communicate.Frontiers in cell and developmental biology · 2024
    Review
  17. Review
  18. Maladaptive Immune Activation in Age-Related Decline of Muscle Function.The journals of gerontology. Series A, Biological sciences and medical sciences · 2023
    Review
  19. Review
  20. Article

73 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

10 authors at 3 institutions in 1 country.

Morgan E CarlsonDepartment of Bioengineering, University of California-Berkeley, Berkeley, CA 94720, USA. mcarlson@berkeley.edu
Michael J Conboy
Michael Hsu
Laurel Barchas
Jaemin Jeong
Anshu Agrawal
Amanda J Mikels
Smita Agrawal
David V Schaffer
Irina M Conboy
University of California, Berkeley · USStanford University · USUniversity of California, Irvine · US

Funding

Effects of the systemic environment on muscle agingR01AG027252 · NIA · UNIVERSITY OF CALIFORNIA BERKELEY · PI CONBOY, IRINA M · 2007 to 2012
$1.7M
NIA NIH HHS R01 AG027252
6 · The paper itself

Abstract

Muscle stem (satellite) cells are relatively resistant to cell-autonomous aging. Instead, their endogenous signaling profile and regenerative capacity is strongly influenced by the aged P-Smad3, differentiated niche, and by the aged circulation. With respect to muscle fibers, we previously established that a shift from active Notch to excessive transforming growth factor-beta (TGF-beta) induces CDK inhibitors in satellite cells, thereby interfering with productive myogenic responses. In contrast, the systemic inhibitor of muscle repair, elevated in old sera, was suggested to be Wnt. Here, we examined the age-dependent myogenic activity of sera TGF-beta1, and its potential cross-talk with systemic Wnt. We found that sera TGF-beta1 becomes elevated within aged humans and mice, while systemic Wnt remained undetectable in these species. Wnt also failed to inhibit satellite cell myogenicity, while TGF-beta1 suppressed regenerative potential in a biphasic fashion. Intriguingly, young levels of TGF-beta1 were inhibitory and young sera suppressed myogenesis if TGF-beta1 was activated. Our data suggest that platelet-derived sera TGF-beta1 levels, or endocrine TGF-beta1 levels, do not explain the age-dependent inhibition of muscle regeneration by this cytokine. In vivo, TGF-beta neutralizing antibody, or a soluble decoy, failed to reduce systemic TGF-beta1 and rescue myogenesis in old mice. However, muscle regeneration was improved by the systemic delivery of a TGF-beta receptor kinase inhibitor, which attenuated TGF-beta signaling in skeletal muscle. Summarily, these findings argue against the endocrine path of a TGF-beta1-dependent block on muscle regeneration, identify physiological modalities of age-imposed changes in TGF-beta1, and introduce new therapeutic strategies for the broad restoration of aged organ repair.

Indexed as

AgingCellular SenescenceAnimalsCell CommunicationCells, CulturedHumansMaleMiceMice, Inbred C57BLMuscle, SkeletalStem CellsTransforming Growth Factor beta1Wnt ProteinsTransforming Growth Factor beta1Wnt Proteins

Identifiers

PMID19732043
PMCPMC2783265
OpenAlexW2096575615

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.