Evidence map›Paper›PMID 21690309›Full record

ArticleThe Journal of cell biology2011

Pannexin 3 functions as an ER Ca(2+) channel, hemichannel, and gap junction to promote osteoblast differentiation.

Masaki Ishikawa, Tsutomu Iwamoto, Takashi Nakamura, Andrew Doyle, Satoshi Fukumoto, Yoshihiko Yamada

Open access · bronzeAbstract read
In one paragraph

Article in The Journal of cell biology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 118 papers.

0numbers the graph read from it
0cells of the map it votes in
118citing papers in PubMed
9.4field-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

118 citing papers in PubMed, 217 citations in OpenAlex.

  1. Article
  2. Altered Pannexin2 Expression in Retinal Degeneration: Insights from the P23H Mouse Model of Retinis Pigmentosa.Journal of neuroimmune pharmacology : the official journal of the Society on NeuroImmune Pharmacology · 2026
    Article
  3. Article
  4. Review
  5. Review
  6. Article
  7. Pannexins in the vasculature.American journal of physiology. Heart and circulatory physiology · 2025
    Review
  8. Review
  9. Pannexin channels in the kidney.American journal of physiology. Renal physiology · 2025
    Review
  10. Article
  11. Article
  12. Review
  13. Pannexin channels in inflammation and tumorigenesis.Frontiers in cell and developmental biology · 2025
    Review
  14. Article
  15. Review
  16. Review
  17. Review
  18. Article
  19. Article
  20. Article

58 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

6 authors at 3 institutions in 2 countries.

Masaki IshikawaLaboratory of Cell and Developmental Biology, National Institute of Dental and Craniofacial Research, National Institutes of Health, Bethesda, MD 20892, USA.
Tsutomu Iwamoto
Takashi Nakamura
Andrew Doyle
Satoshi Fukumoto
Yoshihiko Yamada
National Institute of Dental and Craniofacial Research · USNational Institutes of Health · USTohoku University · JP

Funding

Cell-Matrix Interactions and MigrationZIADE000524 · NIDCR · NATIONAL INSTITUTE OF DENTAL & CRANIOFACIAL RESEARCH · PI YAMADA, KENNETH · 2009 to 2025
$10.2M
Cartilage Development and DiseaseZIADE000483 · NIDCR · NATIONAL INSTITUTE OF DENTAL & CRANIOFACIAL RESEARCH · PI YAMADA, YOSHIHIKO · 2009 to 2017
$5.9M
Intramural NIH HHS
6 · The paper itself

Abstract

The pannexin proteins represent a new gap junction family. However, the cellular functions of pannexins remain largely unknown. Here, we demonstrate that pannexin 3 (Panx3) promotes differentiation of osteoblasts and ex vivo growth of metatarsals. Panx3 expression was induced during osteogenic differentiation of C2C12 cells and primary calvarial cells, and suppression of this endogenous expression inhibited differentiation. Panx3 functioned as a unique Ca(2+) channel in the endoplasmic reticulum (ER), which was activated by purinergic receptor/phosphoinositide 3-kinase (PI3K)/Akt signaling, followed by activation of calmodulin signaling for differentiation. Panx3 also formed hemichannels that allowed release of ATP into the extracellular space and activation of purinergic receptors with the subsequent activation of PI3K-Akt signaling. Panx3 also formed gap junctions and propagated Ca(2+) waves between cells. Blocking the Panx3 Ca(2+) channel and gap junction activities inhibited osteoblast differentiation. Thus, Panx3 appears to be a new regulator that promotes osteoblast differentiation by functioning as an ER Ca(2+) channel and a hemichannel, and by forming gap junctions.

Indexed as

Adenosine TriphosphateAnimalsCalcium ChannelsCalcium SignalingCell DifferentiationCell LineConnexinsEndoplasmic ReticulumGap JunctionsMiceOsteoblastsProto-Oncogene Proteins c-aktAdenosine TriphosphateCalcium ChannelsConnexinspannexin 3 protein, mouseProto-Oncogene Proteins c-akt

Identifiers

PMID21690309
PMCPMC3216329
OpenAlexW2138977093

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-SA
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.