Evidence map›Paper›PMID 31923210›Full record

ArticlePloS one2020

Bioreactor for mobilization of mesenchymal stem/stromal cells into scaffolds under mechanical stimulation: Preliminary results.

Carolina Gamez, Barbara Schneider-Wald, Andy Schuette, Michael Mack, Luisa Hauk, Arif Ul Maula Khan, Norbert Gretz, Marcus Stoffel, Karen Bieback, Markus L Schwarz

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
3.9field-weighted citation impact, top 6% 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

12 citing papers in PubMed, 34 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

10 authors at 2 institutions in 1 country.

Carolina GamezDepartment for Experimental Orthopaedics and Trauma Surgery, Orthopaedics and Trauma Surgery Centre (OUZ), Medical Faculty Mannheim of the University of Heidelberg, Mannheim, Baden Württemberg, Germany.ORCID 0000-0001-8112-4301
Barbara Schneider-WaldDepartment for Experimental Orthopaedics and Trauma Surgery, Orthopaedics and Trauma Surgery Centre (OUZ), Medical Faculty Mannheim of the University of Heidelberg, Mannheim, Baden Württemberg, Germany.
Andy SchuetteDepartment for Experimental Orthopaedics and Trauma Surgery, Orthopaedics and Trauma Surgery Centre (OUZ), Medical Faculty Mannheim of the University of Heidelberg, Mannheim, Baden Württemberg, Germany.
Michael MackDepartment for Experimental Orthopaedics and Trauma Surgery, Orthopaedics and Trauma Surgery Centre (OUZ), Medical Faculty Mannheim of the University of Heidelberg, Mannheim, Baden Württemberg, Germany.
Luisa HaukDepartment for Experimental Orthopaedics and Trauma Surgery, Orthopaedics and Trauma Surgery Centre (OUZ), Medical Faculty Mannheim of the University of Heidelberg, Mannheim, Baden Württemberg, Germany.
Arif Ul Maula KhanMedical Research Centre (ZMF), Medical Faculty Mannheim of the University of Heidelberg, Mannheim, Baden Württemberg, Germany.
Norbert GretzMedical Research Centre (ZMF), Medical Faculty Mannheim of the University of Heidelberg, Mannheim, Baden Württemberg, Germany.
Marcus StoffelInstitute of General Mechanics, RWTH Aachen University, Aachen, Nordrhein-Westfalen, Germany.
Karen BiebackInstitute of Transfusion Medicine and Immunology, FlowCore Mannheim, German Red Cross Blood Service of Baden Württemberg-Hessen, Medical Faculty Mannheim of the University of Heidelberg, Mannheim, Baden Württemberg, Germany.
Markus L SchwarzDepartment for Experimental Orthopaedics and Trauma Surgery, Orthopaedics and Trauma Surgery Centre (OUZ), Medical Faculty Mannheim of the University of Heidelberg, Mannheim, Baden Württemberg, Germany.
Heidelberg University · DERWTH Aachen University · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

introductionArticular cartilage (AC) is a viscoelastic tissue with a limited regenerative capability because of the lack of vasculature. Mechanical stimulation contributes to the homeostasis of functional AC since it promotes the delivery of nutrients, cytokines and growth factors between the distant chondrocytes. We hypothesized that biomechanical stimulation might enhance mobilization of endogenous mesenchymal stem/stromal cells (MSCs) from neighboring niches as the bone marrow.

aimThis study aimed to introduce a bioreactor for inducing mobilization of MSCs from one compartment to another above by mechanical stimulation in vitro.

methodsA novel mechanical system for evaluating mobilization of cells in a 3D context in vitro is presented. The system consists of a compression bioreactor able to induce loading on hydrogel-based scaffolds, custom-made software for settings management and data recording, and image based biological evaluation. Intermittent load was applied under a periodic regime with frequency of 0.3 Hz and unload phases of 10 seconds each 180 cycles over 24 hours. The mechanical stimulation acted on an alginate scaffold and a cell reservoir containing MSCs below it. The dynamic compression exerted amplitude of 200 μm as 10% strain regarding the original height of the scaffold.

resultsThe bioreactor was able to stimulate the scaffolds and the cells for 24.4 (±1.7) hours, exerting compression with vertical displacements of 185.8 (±17.8) μm and a force-amplitude of 1.87 (±1.37; min 0.31, max 4.42) N. Our results suggest that continuous mechanical stimulation hampered the viability of the cells located at the cell reservoir when comparing to intermittent mechanical stimulation (34.4 ± 2.0% vs. 66.8 ± 5.9%, respectively). Functionalizing alginate scaffolds with laminin-521 (LN521) seemed to enhance the mobilization of cells from 48 (±21) to 194 (±39) cells/mm3 after applying intermittent mechanical loading.

conclusionThe bioreactor presented here was able to provide mechanical stimulation that seemed to induce the mobilization of MSCs into LN521-alginate scaffolds under an intermittent loading regime.

Indexed as

BioreactorsAlginatesAnimalsBone Marrow CellsCell Culture TechniquesCells, CulturedCell SurvivalCompressive StrengthMesenchymal Stem CellsStress, MechanicalSwineTissue ScaffoldsAlginates

Identifiers

PMID31923210
PMCPMC6953860
OpenAlexW2999492564

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.