Evidence map›Paper›PMID 25239622›Full record

ArticleThe Journal of biological chemistry2014

Pannexin 1 and pannexin 3 channels regulate skeletal muscle myoblast proliferation and differentiation.

Stéphanie Langlois, Xiao Xiang, Kelsey Young, Bryce J Cowan, Silvia Penuela, Kyle N Cowan

Open access · hybridAbstract read
In one paragraph

Article in The Journal of biological chemistry, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing papers in PubMed
3.0field-weighted citation impact, top 8% 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

38 citing papers in PubMed, 64 citations in OpenAlex.

  1. Pannexins in the vasculature.American journal of physiology. Heart and circulatory physiology · 2025
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  12. Article
  13. Ion Channels and Transporters in Muscle Cell Differentiation.International journal of molecular sciences · 2021
    Review
  14. Review
  15. Pannexin 3 channels in health and disease.Purinergic signalling · 2021
    Review
  16. Article
  17. Review
  18. Article
  19. Article
  20. 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

6 authors at 4 institutions in 1 country.

Stéphanie LangloisDepartment of Surgery, Division of Paediatric Surgery, University of Ottawa, Children's Hospital of Eastern Ontario, Ottawa, Ontario K1H 8L1, Canada,; Apoptosis Research Center, Children's Hospital of Eastern Ontario, Ottawa, Ontario K1H 8L1, Canada.
Xiao XiangApoptosis Research Center, Children's Hospital of Eastern Ontario, Ottawa, Ontario K1H 8L1, Canada,; Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario K1H 8L1, Canada.
Kelsey YoungApoptosis Research Center, Children's Hospital of Eastern Ontario, Ottawa, Ontario K1H 8L1, Canada.
Bryce J CowanDepartment of Dermatology and Skin Science, University of British Columbia, Vancouver, British Columbia V5Z 4E8, Canada, and.
Silvia PenuelaDepartment of Anatomy and Cell Biology, University of Western Ontario, London, Ontario N6A 5C1, Canada.
Kyle N CowanDepartment of Surgery, Division of Paediatric Surgery, University of Ottawa, Children's Hospital of Eastern Ontario, Ottawa, Ontario K1H 8L1, Canada,; Apoptosis Research Center, Children's Hospital of Eastern Ontario, Ottawa, Ontario K1H 8L1, Canada,; Department of Cellular and Molecular Medicine, University of Ottawa, Ottawa, Ontario K1H 8L1, Canada,. Electronic address: kcowan@cheo.on.ca.
Children's Hospital of Eastern Ontario · CAUniversity of Ottawa · CAUniversity of British Columbia · CAWestern University · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Pannexins constitute a family of three glycoproteins (Panx1, -2, and -3) forming single membrane channels. Recent work demonstrated that Panx1 is expressed in skeletal muscle and involved in the potentiation of contraction. However, Panxs functions in skeletal muscle cell differentiation, and proliferation had yet to be assessed. We show here that Panx1 and Panx3, but not Panx2, are present in human and rodent skeletal muscle, and their various species are differentially expressed in fetal versus adult human skeletal muscle tissue. Panx1 levels were very low in undifferentiated human primary skeletal muscle cells and myoblasts (HSMM) but increased drastically during differentiation and became the main Panx expressed in differentiated cells. Using HSMM, we found that Panx1 expression promotes this process, whereas it was impaired in the presence of probenecid or carbenoxolone. As for Panx3, its lower molecular weight species were prominent in adult skeletal muscle but very low in the fetal tissue and in undifferentiated skeletal muscle cells and myoblasts. Its overexpression (∼43-kDa species) induced HSMM differentiation and also inhibited their proliferation. On the other hand, a ∼70-kDa immunoreactive species of Panx3, likely glycosylated, sialylated, and phosphorylated, was highly expressed in proliferative myoblasts but strikingly down-regulated during their differentiation. Reduction of its endogenous expression using two Panx3 shRNAs significantly inhibited HSMM proliferation without triggering their differentiation. In summary, our results demonstrate that Panx1 and Panx3 are co-expressed in human skeletal muscle myoblasts and play a pivotal role in dictating the proliferation and differentiation status of these cells.

Indexed as

Cell DifferentiationCell ProliferationAnimalsCarbenoxoloneConnexinsGlycosylationHEK293 CellsHumansMuscle DevelopmentMuscle, SkeletalMyoblasts, SkeletalNerve Tissue ProteinsPhosphorylationProbenecidProtein Processing, Post-TranslationalRatsCarbenoxoloneConnexinsNerve Tissue ProteinsPANX1 protein, humanPANX2 protein, humanPANX3 protein, humanProbenecidDifferentiationMyoblastsMyogenesisPannexinProliferationSkeletal Muscle

Identifiers

PMID25239622
PMCPMC4215249
OpenAlexW1993283926

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.