Evidence map›Paper›PMID 20506238›Full record

ArticleArthritis and rheumatism2010

Matrix metalloproteinase 13 loss associated with impaired extracellular matrix remodeling disrupts chondrocyte differentiation by concerted effects on multiple regulatory factors.

Rosa Maria Borzí, Eleonora Olivotto, Stefania Pagani, Roberta Vitellozzi, Simona Neri, Michela Battistelli, Elisabetta Falcieri, Annalisa Facchini, Flavio Flamigni, Marianna Penzo and 4 more

Open access · greenAbstract read
In one paragraph

Article in Arthritis and rheumatism, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 40 papers.

0numbers the graph read from it
0cells of the map it votes in
40citing papers in PubMed
3.1field-weighted citation impact, top 9% 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

40 citing papers in PubMed, 58 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

14 authors at 6 institutions in 2 countries.

Rosa Maria BorzíIstituti Ortopedici Rizzoli, Bologna, Italy. rosamaria.borzi@ior.it
Eleonora Olivotto
Stefania Pagani
Roberta Vitellozzi
Simona Neri
Michela Battistelli
Elisabetta Falcieri
Annalisa Facchini
Flavio Flamigni
Marianna Penzo
Daniela Platano
Spartaco Santi
Andrea Facchini
Kenneth B Marcu
Istituto Ortopedico Rizzoli · ITUniversity of Bologna · ITUniversity of Urbino · ITIstituto di Genetica Molecolare · ITStony Brook University · USVita-Salute San Raffaele University · IT

Funding

Novel roles of IKK complex to program gene expressionR01GM066882 · NIGMS · STATE UNIVERSITY NEW YORK STONY BROOK · PI MARCU, KENNETH B · 2003 to 2006
$1.3M
NIGMS NIH HHS R01 GM066882
6 · The paper itself

Abstract

objectiveTo link matrix metalloproteinase 13 (MMP-13) activity and extracellular matrix (ECM) remodeling to alterations in regulatory factors leading to a disruption in chondrocyte homeostasis.

methodsMMP-13 expression was ablated in primary human chondrocytes by stable retrotransduction of short hairpin RNA. The effects of MMP-13 knockdown on key regulators of chondrocyte differentiation (SOX9, runt-related transcription factor 2 [RUNX-2], and beta-catenin) and angiogenesis (vascular endothelial growth factor [VEGF]) were scored at the protein level (by immunohistochemical or Western blot analysis) and RNA level (by real-time polymerase chain reaction) in high-density monolayer and micromass cultures under mineralizing conditions. Effects on cellular viability in conjunction with chondrocyte progression toward a hypertrophic-like state were assessed in micromass cultures. Alterations in SOX9 subcellular distribution were assessed using confocal microscopy in micromass cultures and also in osteoarthritic cartilage.

resultsDifferentiation of control chondrocyte micromasses progressed up to a terminal phase, with calcium deposition in conjunction with reduced cell viability and scant ECM. MMP-13 knockdown impaired ECM remodeling and suppressed differentiation in conjunction with reduced levels of RUNX-2, beta-catenin, and VEGF. MMP-13 levels in vitro and ECM remodeling in vitro and in vivo were linked to changes in SOX9 subcellular localization. SOX9 was largely excluded from the nuclei of chondrocytes with MMP-13-remodeled or -degraded ECM, and exhibited an intranuclear staining pattern in chondrocytes with impaired MMP-13 activity in vitro or with more intact ECM in vivo.

conclusionMMP-13 loss leads to a breakdown in primary human articular chondrocyte differentiation by altering the expression of multiple regulatory factors.

Indexed as

beta CateninBlotting, WesternCartilage, ArticularCell DifferentiationCells, CulturedChondrocytesChondrogenesisCollagen Type IICore Binding Factor Alpha 1 SubunitExtracellular MatrixHumansImmunohistochemistryMatrix Metalloproteinase 13Microscopy, ConfocalMicroscopy, Electron, TransmissionReverse Transcriptase Polymerase Chain Reactionbeta CateninCollagen Type IICore Binding Factor Alpha 1 SubunitMatrix Metalloproteinase 13RUNX2 protein, humanSOX9 protein, humanSOX9 Transcription FactorVascular Endothelial Growth Factor A

Identifiers

PMID20506238
PMCPMC2921033
OpenAlexW2136325125

What OpenQuestion holds

Textmetadata
LicenceTDM
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.