miR‑338‑3p regulates the proliferation, apoptosis and migration of SW480 cells by targeting MACC1

Lu,Mingliang; Huang,Hua; Yang,Jinhui; Li,Jun; Zhao,Gongfang; Li,Weihua; Li,Xinhua; Liu,Guobin; Wei,Li; Shi,Baoping; Zhao,Chunping; Fu,Yan

doi:10.3892/etm.2019.7260

miR‑338‑3p regulates the proliferation, apoptosis and migration of SW480 cells by targeting MACC1

Authors:
- Mingliang Lu
- Hua Huang
- Jinhui Yang
- Jun Li
- Gongfang Zhao
- Weihua Li
- Xinhua Li
- Guobin Liu
- Li Wei
- Baoping Shi
- Chunping Zhao
- Yan Fu
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Affiliations: Department of Gastroenterology, The Second Affiliated Hospital of Kunming Medical University, Kunming, Yunnan 650101, P.R. China, Department of Gastroenterology, No. 1 People's Hospital of Dali City, Dali, Yunnan 671000, P.R. China
Published online on: February 12, 2019 https://doi.org/10.3892/etm.2019.7260
Pages: 2807-2814

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Abstract

The mortality and incidence rates of colorectal cancer (CRC) vary widely worldwide. miR‑338‑3p inhibits tumor cell proliferation in several types of cancer, however, the role of miR‑338‑3p on CRC remains unknown. The aim of the current study was to investigate the cellular function of miRNA‑338‑3p (miR‑338‑3p) in CRC, the malignant behavior of CRC cells and the interaction between miR‑338‑3p and metastasis‑associated in colon cancer‑1 (MACC1). miR‑338‑3p expression was significantly decreased in CRC tissue compared with adjacent normal tissue. In the CRC cell line SW480, miR‑338‑3p overexpression suppressed cell proliferation and migration and induced G1/S cell cycle arrest and apoptosis. By contrast, miR‑338‑3p knockdown significantly enhanced cell proliferation and migration, and suppressed G1/S cell cycle arrest and apoptosis. Furthermore, the dual‑luciferase reporter assay confirmed MACC1 as a direct target of miR‑338‑3p. In addition, miR‑338‑3p overexpression reduced the level of MACC1 protein expression and MACC1 expression was significantly upregulated in CRC tissue samples. MACC1 siRNA significantly reduced CRC cell proliferation and migration, whilst cell apoptosis was significantly increased. In conclusion, miR‑338‑3p expression was decreased in CRC. miR‑338‑3p regulated the proliferation, apoptosis and migration of CRC cells by targeting MACC1.

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