Chondrogenic potential of IL-10 in mechanically injured cartilage and cellularized collagen ACI grafts.
Osteoarthritis Cartilage
; 26(2): 264-275, 2018 02.
Article
em En
| MEDLINE
| ID: mdl-29169959
ABSTRACT
OBJECTIVE:
The application of adjunctive mediators in Autologous chondrocyte implantation (ACI) techniques might be useful for improving the dedifferentiated chondrocyte phenotype, to support neocartilage formation and inhibit post-traumatic cartilage destruction. In this study we examined if (a) interleukin 10 treatment can cause chondrogenic phenotype stabilization and matrix preservation in mechanically injured cartilage and if (b) IL-10 can promote chondrogenesis in a clinically applied collagen scaffold for ACI treatment. MATERIALS ANDMETHODS:
For (a) bovine articular cartilage was harvested, subjected to an axial unconfined injury and treated with bovine IL-10 (1-10,000 pg/ng/ml). For (b) a post-operatively remaining ACI graft was treated with human IL-10. Expression levels of type I/II/X collagen, SOX9 and aggrecan were measured by qPCR (a,b). After 3 weeks cell death was analyzed (nuclear blebbing and TUNEL assay) and matrix composition was determined by GAG measurements and immunohistochemistry (aggrecan, type I/II collagen, hyaluronic acid). STATISTICS One way ANOVA analysis with Bonferroni's correction.RESULTS:
(a) IL-10 stabilized the chondrogenic phenotype after injurious compression and preserved matrix integrity. This was indicated by elevated expression of chondrogenic markers COL2A1, ACAN, SOX9, while COL1A1 and COL10A1 were reduced. An increased GAG content paralleled this and histological staining of type 2 collagen, aggrecan and toluidine blue were enhanced after 3 weeks. (b) IL-10 [100 pg/ml] improved the chondrogenic differentiation of human chondrocytes, which was accompanied by cartilaginous matrix formation after 3 weeks of incubation.CONCLUSION:
Interleukin-10 is a versatile adjuvant candidate to control the post-injurious environment in cartilage defects and promote chondrogenesis in ACI grafts.Palavras-chave
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Cartilagem Articular
/
Interleucina-10
/
Condrogênese
Limite:
Animals
/
Humans
Idioma:
En
Revista:
Osteoarthritis Cartilage
Assunto da revista:
ORTOPEDIA
/
REUMATOLOGIA
Ano de publicação:
2018
Tipo de documento:
Article