Evidence map›Paper›PMID 18405384›Full record

ArticleBMC developmental biology2008

The PI3K pathway regulates endochondral bone growth through control of hypertrophic chondrocyte differentiation.

Veronica Ulici, Katie D Hoenselaar, J Ryan Gillespie, Frank Beier

Open access · hybridAbstract read
In one paragraph

Article in BMC developmental biology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 58 papers.

0numbers the graph read from it
0cells of the map it votes in
58citing papers in PubMed
5.6field-weighted citation impact, top 4% 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

58 citing papers in PubMed, 105 citations in OpenAlex.

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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

4 authors at 1 institution in 1 country.

Veronica UliciCIHR Group in Skeletal Development and Remodeling, Department of Physiology & Pharmacology, University of Western Ontario, London, ON, N6A 5C1, Canada.
Katie D Hoenselaar
J Ryan Gillespie
Frank Beier
Western University · CA

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe majority of our bones develop through the process of endochondral ossification that involves chondrocyte proliferation and hypertrophic differentiation in the cartilage growth plate. A large number of growth factors and hormones have been implicated in the regulation of growth plate biology, however, less is known about the intracellular signaling pathways involved. PI3K/Akt has been identified as a major regulator of cellular proliferation, differentiation and death in multiple cell types. RESULTS AND DISCUSSION: Employing an organ culture system of embryonic mouse tibiae and LY294002, a pharmacological inhibitor of PI3K, we show that inhibition of the pathway results in significant growth reduction, demonstrating that PI3K is required for normal endochondral bone growth in vitro. PI3K inhibition reduces the length of the proliferating and particularly of the hypertrophic zone. Studies with organ cultures and primary chondrocytes in micromass culture show delayed hypertrophic differentiation of chondrocytes and increased apoptosis in the presence of LY294002. Surprisingly, PI3K inhibition had no strong effect on IGF1-induced bone growth, but partially blocked the anabolic effects of C-type natriuretic peptide.

conclusionOur data demonstrate an essential role of PI3K signaling in chondrocyte differentiation and as a consequence of this, in the endochondral bone growth process.

Indexed as

Gene Expression Regulation, DevelopmentalAnimalsBiomarkersBone DevelopmentCell DifferentiationCells, CulturedChondrocytesChromonesFemaleGrowth PlateHypertrophyInsulin-Like Growth Factor IMiceMice, Inbred StrainsMorpholinesOrgan Culture Techniques2-(4-morpholinyl)-8-phenyl-4H-1-benzopyran-4-oneBiomarkersChromonesInsulin-Like Growth Factor IMorpholinesPhosphatidylinositol 3-KinasesPhosphoinositide-3 Kinase Inhibitors

Identifiers

PMID18405384
PMCPMC2329617
OpenAlexW1980438710

What OpenQuestion holds

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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.