miR‑34a inhibits colon cancer proliferation and metastasis by inhibiting platelet‑derived growth factor receptor α

Li,Chunyan; Wang,Yulin; Lu,Shuming; Zhang,Zhuqing; Meng,Hua; Liang,Lina; Zhang,Yan; Song,Bo

doi:10.3892/mmr.2015.4263

miR‑34a inhibits colon cancer proliferation and metastasis by inhibiting platelet‑derived growth factor receptor α

Authors:
- Chunyan Li
- Yulin Wang
- Shuming Lu
- Zhuqing Zhang
- Hua Meng
- Lina Liang
- Yan Zhang
- Bo Song
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Affiliations: Department of Gastroenterology, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China, Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011, P.R. China, Department of Pathology, Dalian Municipal Central Hospital, Dalian, Liaoning 116033, P.R. China, Department of Pathology, Dalian Medical University, Dalian, Liaoning 116044, P.R. China
Published online on: August 28, 2015 https://doi.org/10.3892/mmr.2015.4263
Pages: 7072-7078

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Abstract

The microRNA (miRNA), miR‑34a is significant in colon cancer progression. In the present study, the role of miR‑34a in colon cancer cell proliferation and metastasis was investigated. It was found that the expression of miR‑34a in colon cancer tissues and cell lines was lower when compared with that of normal tissues and cells. Further research demonstrated that miR‑34a inhibited cell proliferation, induced G1 phase arrest, and suppressed metastasis and epithelial mesenchymal transition in colon cancer cells. Bioinformatic prediction indicated that platelet‑derived growth factor receptor α (PDGFRA) was a potential target gene of miR‑34a and a luciferase assay identified that PDGFRA was a novel direct target gene of miR‑34a. In addition, assays of western blot analyses and quantitative reverse‑transcription polymerase chain reaction confirmed that miR‑34a decreased PDGFRA mRNA expression and protein levels in colon cancer cells. Assessment of cellular function indicated that miR‑34a inhibited colon cancer progression via PDGFRA. These findings demonstrate that miR‑34a may act as a negative regulator in colon cancer by targeting PDGFRA.

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