MicroRNA-490-3p inhibits migration and chemoresistance of colorectal cancer cells via targeting TNKS2.
OBJECTIVE
Colorectal cancer is one of the most common malignancy in the world. The oncogenesis of colorectal cancer is still not fully elucidated. It was reported that microRNA-490-3p (miR-490-3p) was closely related to the regulation of cancers. However, if miR-490-3p could also affect colorectal cancer and the specific mechanism remains unclear.


METHODS
qRT-PCR was conducted to examine the expression of miR-490-3p. DIANA, miRDB, and TargetScan databases were used to identify target genes. LOVO and SW480 cells were transfected by miR-490-3p mimics and inhibitors. Transwell assay was used to measure cell invasion and migration. Cisplatin and fluorouracil were administered to investigate chemotherapy resistance. Western blot was used to measure TNKS2 protein expression. Binding sites were verified using the double luciferase assay.


RESULTS
miR-490-3p expression was low in the colorectal cancer cells. The level of miR-490-3p was negatively correlated with cell migration and invasion of cancer cells. miR-490-3p could bind to TNKS2 mRNA 3'UTR directly. miR-490-3p can suppress cell viability and resistance to chemotherapy in colorectal cancer cells through targeting TNKS2.


CONCLUSIONS
miR-490-3p could affect colorectal cancer by targeting TNKS2. This study may provide a potential therapeutic target for colorectal cancer.
['Li|Jing|J|', 'Mo|Rubing|R|', 'Zheng|Linmei|L|http://orcid.org/0000-0002-5230-786X']
D045744:Cell Line, Tumor D002465:Cell Movement D049109:Cell Proliferation D015179:Colorectal Neoplasms D019008:Drug Resistance, Neoplasm D015972:Gene Expression Regulation, Neoplastic D006801:Humans D035683:MicroRNAs D011379:Prognosis D038501:Tankyrases
Migration Chemoresistance Colorectal cancer TNKS2 miR-490-3p