Abstract
Colorectal cancer is a common malignant cancer that is characterized by high mortality rate. CCAT1 is a type of newly discovered lncRNA. This research was conducted to study the role of CCAT1 in colorectal cancer. The findings showed that there was significant up-regulation of CCAT1 expression in colorectal cancer. Then, online bioinformatic database and dual-luciferase reporter assay to prove CCAT1 and miR-152 have direct binding sites. Many researches demonstrated that miR-152 played a crucial role in development of colorectal cancer. Therefore, we then explored the relationship between CCAT1 and miR-152 in colorectal cancer. qRT-PCR analysis showed that miR-152 was lowly expressed in cancer tissue and cells. We then explored the effect of CCAT1 and miR-152 on the biological effects of colorectal cancer cells. MiR-152 up-regulation significantly reduced colorectal cancer cell viability and enhanced apoptosis. Furthermore, CCAT1-shRNA inhibited colorectal cancer cell viability and enhanced cell apoptosis were significantly eliminated by miR-152 inhibitor. Combined with all results, CCAT1/miR-152 axis was related to colorectal cancer progression regulation, which might be used as new therapeutic targets for colorectal cancer treatment.
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