Evidence map›Paper›PMID 22738340›Full record

ArticleTissue engineering. Part A2012

Culture of primary bovine chondrocytes on a continuously expanding surface inhibits dedifferentiation.

Derek H Rosenzweig, Mourad Matmati, Ghazaleh Khayat, Sidharth Chaudhry, Boris Hinz, Thomas M Quinn

Open access · greenAbstract readComparative Study
In one paragraph

Article in Tissue engineering. Part A, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
4.6field-weighted citation impact, top 5% 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

20 citing papers in PubMed, 49 citations in OpenAlex.

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  18. A copper sulfate and hydroxylysine treatment regimen for enhancing collagen cross-linking and biomechanical properties in engineered neocartilage.FASEB journal : official publication of the Federation of American Societies for Experimental Biology · 2013
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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

6 authors at 2 institutions in 1 country.

Derek H RosenzweigSoft Tissue Biophysics Laboratory, Department of Chemical Engineering, McGill University, Montreal, Canada.
Mourad Matmati
Ghazaleh Khayat
Sidharth Chaudhry
Boris Hinz
Thomas M Quinn
McGill University · CAUniversity of Toronto · CA

Funding

Canadian Institutes of Health Research 1004005Canadian Institutes of Health Research 210820
6 · The paper itself

Abstract

Expansion of autologous chondrocytes in vitro is used to generate adequate populations for cell-based therapies. However, standard (SD) culture methods cause loss of chondrocyte phenotype and dedifferentiation to fibroblast-like cells. Here, we use a novel surface expansion culture system in an effort to inhibit chondrocyte dedifferentiation. A highly elastic silicone rubber culture surface was continuously stretched over a 13-day period to 600% of its initial surface area. This maintained cells at a high density while limiting contact inhibition and reducing the need for passaging. Gene expression analysis, biochemical assays, and immunofluorescence microscopy of follow-on pellet cultures were used to characterize the results of continuous expansion (CE) culture versus SD cultures on rigid polystyrene. CE culture yielded cells with a more chondrocyte-like morphology and higher RNA-level expression of the chondrogenic markers collagen type II, aggrecan, and cartilage oligomeric matrix protein. Furthermore, the expression of collagen type I RNA and α-smooth muscle actin protein were significantly reduced, indicating suppression of fibroblastic features. Pellet cultures from CE chondrocytes contained more sulphated glycosaminoglycan and collagen type II than pellets from SD culture. Additional control cultures on static (unexpanded) silicone (SS culture) indicated that benefits of CE culture were partially due to features of the culture surface itself and partially due to the reduced passaging which that surface enabled through CE. Chondrocytes grown in CE culture may, therefore, be a superior source for cell-based therapies.

Indexed as

ActinsAnimalsApoptosisBiocompatible MaterialsCattleCell DedifferentiationCell DivisionCells, CulturedChondrocytesContact InhibitionElasticityExtracellular Matrix ProteinsFemaleGlycosaminoglycansPolystyrenesPrimary Cell CultureA73025ActinsBiocompatible MaterialsExtracellular Matrix ProteinsGlycosaminoglycansPolystyrenesRNA, MessengerSilicone Elastomers

Identifiers

PMID22738340
PMCPMC3501116
OpenAlexW2005009468

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.