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miR-182 contributes to cell proliferation, invasion and tumor growth in colorectal cancer by targeting DAB2IP.

08:00 EDT 8th April 2019 | BioPortfolio

Summary of "miR-182 contributes to cell proliferation, invasion and tumor growth in colorectal cancer by targeting DAB2IP."

miR-182 was revealed to be upregulated in colorectal cancer (CRC) and contributed to CRC development. However, the detailed molecular mechanism of miR-182 in the progression of CRC remains largely elusive. Herein, miR-182 was upregulated in CRC serum samples, CRC tissues and cells. miR-182 expression was evidently reduced in postoperative serum samples, compared with preoperative serum samples, whereas miR-182 expression was re-elevated in serum samples from CRC patients who developed postoperative recurrence. Exogenous miR-182 promoted the proliferation, colony formation, increased ki67 level and facilitated the invasion capability of CRC cells by enhancing the expressions of MMP-2 and MMP-9, while inhibition of miR-182 showed the opposite effects. Additionally, miR-182 was demonstrated to target DAB2IP and suppress its expression in CRC cells. Downregulation of miR-182 inhibited CRC tumor growth in vivo by upregulating DAB2IP. Moreover, restoration of DAB2IP attenuated miR-182-mediated activation of the PI3K/Akt/mTOR and Wnt pathways in CRC cells. Taken together, our findings showed that miR-182 exerted its oncogenic role in CRC by targeting DAB2IP, which may be involved in activating the PI3K/Akt/mTOR and Wnt/β-catenin pathways, shedding a novel light on the molecular mechanism of CRC tumorigenesis.

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This article was published in the following journal.

Name: The international journal of biochemistry & cell biology
ISSN: 1878-5875
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Medical and Biotech [MESH] Definitions

Nuclear phosphoprotein encoded by the p53 gene (GENES, P53) whose normal function is to control CELL PROLIFERATION and APOPTOSIS. A mutant or absent p53 protein has been found in LEUKEMIA; OSTEOSARCOMA; LUNG CANCER; and COLORECTAL CANCER.

Tumor suppressor genes located in the 18q21-qter region of human chromosome 18. The absence of these genes is associated with the formation of colorectal cancer (DCC stands for deleted in colorectal cancer). The products of these genes show significant homology to neural cell adhesion molecules and other related cell surface glycoproteins.

Tumor suppressor genes located in the 5q21 region on the long arm of human chromosome 5. The mutation of these genes is associated with the formation of colorectal cancer (MCC stands for mutated in colorectal cancer).

A proto-oncogene protein and member of the Wnt family of proteins. It is frequently up-regulated in human GASTRIC CANCER and is a tumor marker (TUMOR MARKERS, BIOLOGICAL) of gastric and COLORECTAL CANCER.

Tumors or cancer of the COLON or the RECTUM or both. Risk factors for colorectal cancer include chronic ULCERATIVE COLITIS; FAMILIAL POLYPOSIS COLI; exposure to ASBESTOS; and irradiation of the CERVIX UTERI.

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