Chitosan enriched three-dimensional matrix reduces inflammatory and catabolic mediators production by human chondrocytes
This in vitro study investigated the metabolism of human osteoarthritic (OA) chondrocytes encapsulated in a spherical matrix enriched of chitosan. Human OA chondrocytes were encapsulated and cultured for 28 days either in chitosan-alginate beads or in alginate beads. The beads were formed by slowly...
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Published in | PloS one Vol. 10; no. 5; p. e0128362 |
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Main Authors | , , , , , , |
Format | Journal Article Web Resource |
Language | English |
Published |
United States
Public Library of Science
28.05.2015
Public Library of Science (PLoS) |
Subjects | |
Online Access | Get full text |
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Summary: | This in vitro study investigated the metabolism of human osteoarthritic (OA) chondrocytes encapsulated in a spherical matrix enriched of chitosan. Human OA chondrocytes were encapsulated and cultured for 28 days either in chitosan-alginate beads or in alginate beads. The beads were formed by slowly passing dropwise either the chitosan 0.6%-alginate 1.2% or the alginate 1.2% solution through a syringe into a 102 mM CaCl2 solution. Beads were analyzed histologically after 28 days. Interleukin (IL)-6 and -8, prostaglandin (PG) E2, matrix metalloproteinases (MMPs), hyaluronan and aggrecan were quantified directly in the culture supernatant by specific ELISA and nitric oxide (NO) by using a colorimetric method based on the Griess reaction. Hematoxylin and eosin staining showed that chitosan was homogeneously distributed through the matrix and was in direct contact with chondrocytes. The production of IL-6, IL-8 and MMP-3 by chondrocytes significantly decreased in chitosan-alginate beads compared to alginate beads. PGE2 and NO decreased also significantly but only during the first three days of culture. Hyaluronan and aggrecan production tended to increase in chitosan-alginate beads after 28 days of culture. Chitosan-alginate beads reduced the production of inflammatory and catabolic mediators by OA chondrocytes and tended to stimulate the synthesis of cartilage matrix components. These particular effects indicate that chitosan-alginate beads are an interesting scaffold for chondrocytes encapsulation before transplantation to repair cartilage defects. |
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Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 scopus-id:2-s2.0-84934914983 Conceived and designed the experiments: FO CS VM YH. Performed the experiments: FO CS PC CH. Analyzed the data: FO CS JED VM CH PC YH. Contributed reagents/materials/analysis tools: CS JED VM CH PC. Wrote the paper: FO YH. Critical revision of the article for important intellectual content: FO CS JED VM CH PC YH. Statistical expertise: FO YH. Competing Interests: YH is the founder and chairman of Artialis SA and Synolyne SA, two spin-off companies of the University of Liège. He is also an advisor for some pharmaceutical companies including BioIberica, Laboratoires Expanscience, Flexxion, Tilman SA and Nestle. VM is an employee of KitoZyme SA, the provider of chitosan and inventor of the patent: "Cell cultivation in chitosan alginate hydrogel beads WO2011104131" which describes the scaffold described in this paper. This does not alter the authors' adherence to PLOS ONE policies on sharing data and materials. Current Address: Physical Therapy and Rehabilitation Department, Princess Paola Hospital, Marche-en-Famenne, Belgium |
ISSN: | 1932-6203 1932-6203 |
DOI: | 10.1371/journal.pone.0128362 |