Abstract:
BACKGROUND:MiR-152 has been reported as a tumor suppressor microRNA that is downregulated in a number of cancers, including colorectal cancer (CRC). A recent study suggested that miR-152 could be one of the key regulators of CRC. The aim of this study is to investigate the role of miR-152 in CRC and its mechanisms. METHODS:The pCMV-GPF-miR-152 vector was transfected into SW-480 and HCT-116 CRC cells via JetPEI transfection reagent. The stable miR-152-expressed cells were selected for the further experiment. To evaluate the effect of miR-152 on cell proliferation, 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay was performed. Also, the effect of miR-152 on the survival of CRC cells was analyzed using terminal deoxynucleotidyl transferase dUTP nick-end labeling (TUNEL) assay. The inhibitory effect of miR-152 on migration was assessed by wound healing scratch assay. Then, the proteins expression levels of protein kinase B (AKT), phosphorylated AKT (p-AKT), extracellular signal-regulated kinase (ERK), and phosphorylated ERK (p-ERK) were measured by the western blot analysis method. RESULTS:The result of MTT assay represented miR-152 could inhibit cell proliferation. The TUNEL assay showed miR-152 could induce apoptosis in CRC cells. The wound healing scratch assay showed that miR-152 replacement repressed cell migration in CRC cell lines compared to control groups. The result of protein expression by western blot analysis demonstrated that miR-152 could reduce AKT-p-AKT, and ERK-p-ERK ratio compared to control cells. CONCLUSION:Our results show that miR-152 has new anticancer and antimetastatic effect in CRC tissue. The current study showed that miR-152 could be a novel therapeutic small molecule to suppress CRC cell proliferation, survival, and migration by suppressing AKT-ERK signaling pathways.
journal_name
J Cell Physioljournal_title
Journal of cellular physiologyauthors
Ghazanchaei A,Mansoori B,Mohammadi A,Biglari A,Baradaran Bdoi
10.1002/jcp.26891subject
Has Abstractpub_date
2018-01-01 00:00:00pages
769-776issue
1eissn
0021-9541issn
1097-4652journal_volume
234pub_type
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