Abstract

CYP24A1plays a role in strictly regulated vitamin D metabolism pathway and has been nominated as a prognostic biomarker for colorectal cancer (CRC). Increasing evidence suggests that circular RNAs (circRNAs) are involved in cancer initiation and progression; however, their diagnostic values in cancers as the new potential biomarkers are still not fully understood. In the present study, by using quantitative real-time polymerase chain reaction (qRT-PCR), we demonstrated thatCYP24A1and hsacirc₀₀₆₀₉₂₇ were only transcribed in 33 and 25 out of 83 CRC tissues, respectively. In these samples, we demonstrated thatCYP24A1was up-regulated in both linear and circular forms (P < 0.05). Furthermore, we showed thatCYP24A1and hsacirc₀₀₆₀₉₂₇ transcription were induced after vitamin D treatment in HCT-116 and HT-29 colon cancer cell lines. Importantly, analysis of the ROC curve in expressed samples indicated thatCYP24A1and hsacirc₀₀₆₀₉₂₇ could serve as the potential diagnostic markers of CRC, but due to the fact that these transcripts are not expressed in many samples, the diagnostic role of these transcripts could be rejected. Taken together, for the first time, the results of our study illustrated the expression levels hsacirc₀₀₆₀₉₂₇ in CRC; however, further studies are required to validate the present results.