|
1
|
Liu YC, Park YR, Kim SL, Lee ST, Kim SW. MicroRNA-30a Inhibits Colorectal Cancer Metastasis Through Down-Regulation of Type I Insulin-Like Growth Factor Receptor. Dig Dis Sci 2017; 62:3040-3049. [PMID: 28932920 DOI: 10.1007/s10620-017-4763-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 09/13/2017] [Indexed: 12/19/2022]
Abstract
BACKGROUND miR-30a expression is down-regulated and regulates tumor suppressors in various cancers. AIM We investigated the mechanisms underlying the biological role of miR-30a in CRC. METHODS MicroRNA, mRNA, and protein expression were analyzed by quantitative real-time PCR and Western blot. The migration and invasion abilities of CRC were determined by wound healing assay, and trans-well migration and invasion. A luciferase reporter assay was used to confirm the targets of miR-30a. RESULTS miR-30a expression was significantly down-regulated in CRC tissues and in CRC tissue with lymph node metastasis compared to CRC tissue without metastasis. Overexpression of miR-30a suppressed migration and invasion through insulin-like growth factor 1 receptor (IGF1R) in CRC cells. miR-30a suppresses IGF1R protein expression and inhibits β-catenin or p-AKT and increases E-cadherin expression. The IGF1R expression level is also up-regulated in CRC tumors and inversely correlated with miR-30a in CRC specimens. CONCLUSIONS miR-30a functions as a tumor-suppressive miRNA, which may provide a therapeutic strategy for metastasis of CRC.
Collapse
Affiliation(s)
- Y C Liu
- Department of Physiology, Chonbuk National University Medical School, Jeonju, Republic of Korea
| | - Y R Park
- Department of Internal Medicine of Chonbuk, National University Hospital, Chonbuk National University Medical School, Jeonju, Republic of Korea
- Department of Internal Medicine, Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute, Chonbuk National University Hospital, Chonbuk National University Medical School, 20 Geonji-ro, Deokjin-gu, Jeonju, Jeonbuk, 54907, Republic of Korea
| | - S L Kim
- Department of Internal Medicine of Chonbuk, National University Hospital, Chonbuk National University Medical School, Jeonju, Republic of Korea
- Department of Internal Medicine, Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute, Chonbuk National University Hospital, Chonbuk National University Medical School, 20 Geonji-ro, Deokjin-gu, Jeonju, Jeonbuk, 54907, Republic of Korea
| | - S T Lee
- Department of Internal Medicine of Chonbuk, National University Hospital, Chonbuk National University Medical School, Jeonju, Republic of Korea
- Department of Internal Medicine, Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute, Chonbuk National University Hospital, Chonbuk National University Medical School, 20 Geonji-ro, Deokjin-gu, Jeonju, Jeonbuk, 54907, Republic of Korea
| | - S W Kim
- Department of Internal Medicine of Chonbuk, National University Hospital, Chonbuk National University Medical School, Jeonju, Republic of Korea.
- Department of Internal Medicine, Research Institute of Clinical Medicine of Chonbuk National University-Biomedical Research Institute, Chonbuk National University Hospital, Chonbuk National University Medical School, 20 Geonji-ro, Deokjin-gu, Jeonju, Jeonbuk, 54907, Republic of Korea.
| |
Collapse
|