Evidence map›Paper›PMID 22956608›Full record

ArticleInvestigative ophthalmology & visual science2012

Existence of the canonical Wnt signaling pathway in the human trabecular meshwork.

Weiming Mao, J Cameron Millar, Wan-Heng Wang, Sean M Silverman, Yang Liu, Robert J Wordinger, Jeffrey S Rubin, Iok-Hou Pang, Abbot F Clark

Open access · bronzeAbstract read
In one paragraph

Article in Investigative ophthalmology & visual science, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 62 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
62citing papers in PubMed, 1 pooled it
2.1field-weighted citation impact, top 13% 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

62 citing papers in PubMed, 1 synthesis or guideline pooled it, 88 citations in OpenAlex.

  1. Pooled it
  2. Review
  3. Review
  4. Mechanobiology in the eye.npj biological physics and mechanics · 2025
    Review
  5. Article
  6. Article
  7. Review
  8. GSK3β Inhibitors Inhibit TGFβ Signaling in the Human Trabecular Meshwork.Investigative ophthalmology & visual science · 2024
    Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Viral Vector-Induced Ocular Hypertension in Mice.Methods in molecular biology (Clifton, N.J.) · 2023
    Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. Review

2 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

9 authors at 4 institutions in 1 country.

Weiming MaoDepartment of Cell Biology and Anatomy, North Texas Eye Research Institute, University of North Texas Health Science Center, Fort Worth, Texas 76107, USA. weiming.mao@unthsc.edu
J Cameron Millar
Wan-Heng Wang
Sean M Silverman
Yang Liu
Robert J Wordinger
Jeffrey S Rubin
Iok-Hou Pang
Abbot F Clark
Alcon (United States) · USUniversity of North Texas · USUniversity of North Texas Health Science Center · USNational Cancer Institute · US

Funding

Wnt Signaling and Secreted Frizzled-Related ProteinsZIABC010251 · NCI · DIVISION OF BASIC SCIENCES - NCI · PI RUBIN, JEFFREY · 2009 to 2014
$2.9M
BMP Regulation of TGF-b2 in the Trabecular MeshworkR01EY017374 · NEI · UNIVERSITY OF NORTH TEXAS HLTH SCI CTR · PI WORDINGER, ROBERT J · 2008 to 2012
$2.2M
NEI NIH HHS R01 EY017374
6 · The paper itself

Abstract

purposeWe previously discovered elevated levels of secreted frizzled-related protein 1 (sFRP1), the Wnt signaling pathway inhibitor, in the glaucomatous trabecular meshwork (GTM), and found that key canonical Wnt signaling pathway genes are expressed in the trabecular meshwork (TM). The purpose of our study was to determine whether a functional canonical Wnt signaling pathway exists in the human TM (HTM).

methodsWestern immunoblotting and/or immunofluorescent microscopy were used to study β-catenin translocation as well as the actin cytoskeleton in transformed and primary HTM cells. A TCF/LEF luciferase assay was used to study functional canonical Wnt signaling, which was confirmed further by WNT3a-induced expression of a pathway target gene, AXIN2, via quantitative PCR. Intravitreal injection of an Ad5 adenovirus expressing Dickkopf-related protein-1 (DKK1) was used to study the in vivo effect of canonical Wnt signaling on IOP in mice.

resultsWNT3a induced β-catenin translocation in the HTM, which was blocked by co-treatment with sFRP1. Similarly, WNT3a enhanced luciferase levels in TCF/LEF luciferase assays, which also were blocked by sFRP1. Furthermore, AXIN2 expression was elevated significantly by WNT3a. However, neither WNT3a nor sFRP1 affected actin cytoskeleton organization, which theoretically could be regulated by noncanonical Wnt signaling in HTM cells. Exogenous DKK1, a specific inhibitor for the canonical Wnt signaling pathway, or sFRP1 elevated mouse IOP to equivalent levels.

conclusionsThere is a canonical Wnt signaling pathway in the TM, and this canonical Wnt pathway, but not the noncanonical Wnt signaling pathway, regulates IOP.

Indexed as

ActinsAdenoviridaeAxin Proteinbeta CateninBlotting, WesternCells, CulturedDensitometryElectrophoresis, Polyacrylamide GelGene ExpressionHumansIntercellular Signaling Peptides and ProteinsIntraocular PressureIntravitreal InjectionsMicroscopy, FluorescenceProtein TransportReal-Time Polymerase Chain ReactionActinsAXIN2 protein, humanAxin Proteinbeta CateninDKK1 protein, humanIntercellular Signaling Peptides and ProteinsWnt3A Protein

Identifiers

PMID22956608
PMCPMC4607241
OpenAlexW2058006061

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.