Ctgf/hcs24 CAESAR

ctgf/hcs24 CAESAR is the name given to the cis-acting RNA element identified in the 3' untranslated region (3'UTR) of the human connective tissue growth factor (CTGF) messenger RNA. This gene is also known as hypertrophic chondrocyte specific 24 (hcs24).

The importance of the 3'UTR in repressing ctgf gene expression was initially characacterised and subsequently the minimal RNA element responsible for repression was identified This element was  predicted to form a stable secondary structure, which acts as a post-transcriptional cis-acting element of structure-anchored repression (CAESAR).

The 3'UTR of the ctgf/hcs24 gene in chicken has also been shown to be involved in repression of gene expression.