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Periostin induces early articular cartilage degeneration in developmental dysplasia of the hip

ABSTRACT: Periostin induces early articular cartilage degeneration in developmental dysplasia of the hip

PROVIDER: PRJNA726513 | ENA |

REPOSITORIES: ENA

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Periostin induces early articular cartilage degeneration in developmental dysplasia of the hip

Project description:Developmental dysplasia of the hip (DDH) is one of the significant risk factors for hip osteoarthritis. In order to investigate the factors that induce early articular cartilage degeneration of the hip joints that are exposed to reduced dynamic loads arising from hip dislocation , we created rodent models of hip dislocation by swaddling. Notably, expression of periostin (Postn) was increased in the acetabular articular cartilage of the DDH models; Postn was a candidate gene associated with early articular cartilage degeneration. We showed that early articular cartilage degeneration was suppressed in Postn-/- DDH mice. Furthermore, a microgravity environment induced the expression of Postn in chondrocytes through STAT3 signaling. Postn induced catabolic factors, interleukin-6 and matrix metalloproteinase 3, in articular chondrocytes through integrin-nuclear factor κB signaling. Additionally, interleukin-6 stimulated Postn expression through STAT3 signaling. Thus, Postn plays a critical role in early articular cartilage degeneration associated with hip dislocation.

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miRNA and mRNA transcriptome profiling of chondrocytes in proliferative zone of acetabular cartilage in developmental dysplasia of the hip

Project description:Developmental dysplasia of the hip (DDH) is a complex and multifactorial disease with an unclear pathogenesis, and the non-coding RNAs have been found important effect in many diseases. However, their contributions to the pathogenesis of DDH are not well-established. Growth of the acetabular cartilage mainly depends on the regulation of chondrocytes in proliferative zone. Here, we report on some new regulatory mechanisms of gene expression underlying the development of DDH by transcriptome profiling of proliferative zone microdissected from the acetabular cartilage. These results provide original insight into the roles of non-coding RNAs in DDH and provide a valuable resource for further analyses of molecular mechanisms and signaling networks.

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