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Orthopaedic Proceedings
Vol. 100-B, Issue SUPP_9 | Pages 26 - 26
1 May 2018
Pickering G Simpson J Wilkinson J Kiss-Toth E
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Background

Heterotopic ossification (HO) is lamellar bone formation in the soft tissues following trauma or joint replacement for osteoarthritis (OA). A genome wide association study of HO patients after total hip arthroplasty for OA has identified Kinesin Family Member 26B (KIF26B) as a gene associated with HO severity. KIF26B has previously been associated with HO in mice.

Hypothesis and aims: We hypothesised that Kif26b regulates the osteogenic trans-differentiation of myoblasts; a possible mechanism of HO. Using an in vitro model, we wished to establish whether Kif26b is involved in HO formation and to explore the molecular mechanism.

Methods

We developed CRISPR/Cas9 mediated Kif26b knockout (KO) C2C12 myoblasts. Wild type (WT) and KO cells were transdifferentiated towards an osteogenic lineage using BMP-2 for 24 days. The effect of Kif26b KO on mineralisation was quantified by calcium staining. The mean difference (±SEM) in gene expression between WT and KO lines was compared with ANOVA.