Evidence map›Paper›PMID 22006022›Full record

ArticleMolecular and cellular biology2012

O(2) regulates skeletal muscle progenitor differentiation through phosphatidylinositol 3-kinase/AKT signaling.

Amar J Majmundar, Nicolas Skuli, Rickson C Mesquita, Meeri N Kim, Arjun G Yodh, Michelle Nguyen-McCarty, M Celeste Simon

Open access · greenAbstract read
In one paragraph

Article in Molecular and cellular biology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
41citing papers in PubMed, 2 pooled it
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

41 citing papers in PubMed, 2 syntheses or guidelines pooled it, 70 citations in OpenAlex.

  1. Pooled it
  2. A systematic review of p53 regulation of oxidative stress in skeletal muscle.Redox report : communications in free radical research · 2018
    Pooled it
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  16. HIF-hypoxia signaling in skeletal muscle physiology and fibrosis.Journal of cell communication and signaling · 2020
    Review
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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

7 authors at 2 institutions in 1 country.

Amar J MajmundarAbramson Family Cancer Research Institute, University of Pennsylvania, Philadelphia, Pennsylvania, USA.
Nicolas Skuli
Rickson C Mesquita
Meeri N Kim
Arjun G Yodh
Michelle Nguyen-McCarty
M Celeste Simon
Cancer Research Institute · USUniversity of Pennsylvania · US

Funding

Training in Muscle Biology and Muscle DiseaseT32AR053461 · NIAMS · UNIVERSITY OF PENNSYLVANIA · PI OSTAP, E. MICHAEL · 2006 to 2025
$4.9M
HIFs and VEGF in sarcoma progression, metastasis, and radiation responseR01CA158301 · NCI · UNIVERSITY OF PENNSYLVANIA · PI SIMON, M. CELESTE, YOON, SAM SUNGHYUN · 2011 to 2021
$4.1M
Howard Hughes Medical InstituteNCI NIH HHS R01 CA158301NIAMS NIH HHS T32 AR053461NIAMS NIH HHS T32-AR053461-03PHS HHS 5-R01-8L-066310
6 · The paper itself

Abstract

Skeletal muscle stem/progenitor cells, which give rise to terminally differentiated muscle, represent potential therapies for skeletal muscle diseases. Delineating the factors regulating these precursors will facilitate their reliable application in human muscle repair. During embryonic development and adult regeneration, skeletal muscle progenitors reside in low-O(2) environments before local blood vessels and differentiated muscle form. Prior studies established that low O(2) levels (hypoxia) maintained muscle progenitors in an undifferentiated state in vitro, although it remained unclear if progenitor differentiation was coordinated with O(2) availability in vivo. In addition, the molecular signals linking O(2) to progenitor differentiation are incompletely understood. Here we show that the muscle differentiation program is repressed by hypoxia in vitro and ischemia in vivo. Surprisingly, hypoxia can significantly impair differentiation in the absence of hypoxia-inducible factors (HIFs), the primary developmental effectors of O(2). In order to maintain the undifferentiated state, low O(2) levels block the phosphatidylinositol 3-kinase/AKT pathway in a predominantly HIF1α-independent fashion. O(2) deprivation affects AKT activity by reducing insulin-like growth factor I receptor sensitivity to growth factors. We conclude that AKT represents a key molecular link between O(2) and skeletal muscle differentiation.

Indexed as

AnimalsCell DifferentiationCell HypoxiaCell LineCells, CulturedHumansHypoxia-Inducible Factor 1, alpha SubunitMiceMice, Inbred C57BLMyoblastsOxygenPhosphatidylinositol 3-KinasePhosphoinositide-3 Kinase InhibitorsProtein Kinase InhibitorsProto-Oncogene Proteins c-aktReceptors, NotchHypoxia-Inducible Factor 1, alpha SubunitOxygenPhosphatidylinositol 3-KinasePhosphoinositide-3 Kinase InhibitorsProtein Kinase InhibitorsProto-Oncogene Proteins c-aktReceptors, NotchTOR Serine-Threonine Kinases

Identifiers

PMID22006022
PMCPMC3255700
OpenAlexW2079578835

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.