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Orthopaedic Proceedings
Vol. 103-B, Issue SUPP_16 | Pages 66 - 66
1 Dec 2021
Felix-Ilemhenbhio F Deshmukh SR Sudbery I Kiss-Toth E Wilkinson JM
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Abstract

Objectives

The term heterotopic ossification (HO) describes lamellar bone formation within soft tissues following injury. A genome-wide scan of patients after hip arthroplasty has identified that variation within the lncRNA CASC20 is associated with HO susceptibility. Previous findings in our lab have demonstrated upregulation of CASC20 during BMP2-induced osteodifferentiation of adipose-derived stem cells (hMAD) alongside osteodifferentiation markers, RUNX2 and OSX. We hypothesize that CASC20 is a novel regulator of bone formation and aim to investigate CASC20 function in bone formation.

Methods

1) We used miRanda prediction algorithm and the ENCORI database to respectively predict which miRNAs CASC20 interacts with and to select for experimentally validated miRNAs. 2) We characterized the expression and functional role of CASC20-interacting miRNAs by respectively analyzing publicly available datasets (GSE107279 and pubmed.ncbi.nlm.nih.gov/26175215/) and by using Gene Ontology (GO) analysis. 3) We overexpressed CASC20 in hMAD using a lentiviral system and tested the effect of CASC20 overexpression in osteodifferentiation and expression of putative CASC20-interacting miRNAs.