Document Type : Research articles


1 Department of Oncology, Second People Hospital of Dezhou, Dezhou, Shandong Province, China

2 Department of Endoscopic, Second People Hospital of Dezhou, Dezhou, Shandong Province, China

3 Department of Radiotherapy, Second People Hospital of Dezhou, Dezhou, Shandong Province, China


Objectives: This study aimed to investigate the potential function of miR-214 in the apoptosis induction by targeting p53 in human colorectal cancer cells (CRC) in combination with doxorubicin (DOX).
Methods: miR-214 mimics were transfected to HT-29 CRC cells. Following that, the transfected cells were treated with DOX. Cell viability, apoptosis, and migration were evaluated by MTT, flow cytometry, and scratch-wound motility assays, respectively. Furthermore, the expression level of miR-214 and p53 was evaluated by qRT-PCR.
Results: miR-214 transfection significantly inhibited the cell proliferation rate (P<0.05), induced apoptosis (P<0.05), and harnessed migration (P<0.05) in the HT-29 cells after 48 h. Furthermore, more effectiveness was observed in combination with DOX. Additionally, miR-214 transfection led to a reduction in p53 expression offering that it might be a potential target for miR-214.
Conclusion: In conclusion, miR-214 sensitizes HT-29 cells to doxorubicin by targeting p53 indicating the significant role of this miRNA in colorectal cancer chemotherapy.


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