MicroRNA-4284 inhibits colon cancer epithelial-mesenchymal transition by down-regulating Perilipin 5

  • Xiaofei Miao Department of General Surgery, Nanjing Medical University Affiliated Wuxi people's Hospital, Wuxi, Jiangsu Province, China.
  • Zengyao Li Department of General Surgery, Nanjing Medical University Affiliated Wuxi people's Hospital, Wuxi, Jiangsu Province, China.
  • Ye Zhang Department of General Surgery, Nanjing Medical University Affiliated Wuxi people's Hospital, Wuxi, Jiangsu Province, China.
  • Tong Wang Department of General Surgery, Nanjing Medical University Affiliated Wuxi people's Hospital, Wuxi, Jiangsu Province, China.
Keywords: MicroRNA-4284, Colon cancer, Perilipin 5, Tumorigenesis, Epithelial-mesenchymal transition


Background: MicroRNA (miR) has been suggested in the development of several types of cancer; yet, the exact function of miR-4284 in colon cancer remains elusive.

Methods: MiR-4284 expression was assessed in normal colon cell line CCD-18Co, and HT-29 and SW480 cell lines representing human colon cancer. Potential target gene of miR-4284 was predicted using TargetScanHuman, and experimentally verified using luciferase report assay. Wound-healing, cell invasion and attachment were evaluated to determine the effect of miR-4284 on the migration, invasion, and metastatic properties of colon cancer cell lines. Expression of epithelial-mesenchymal transition (EMT) phenotypic protein hallmarks, including N-cadherin, E-cadherin, as well as Vimentin, was also evaluated.

Results: MiR-4284 was significantly decreased in colon cancer cell lines, and Perilipin 5 (PLIN5) was found to be directly targeted by miR-4284. Ectopic expression of miR-4284 significantly reduced endogenous expression level of PLIN5 in colon cancer cell lines, suppressing migration, invasion, and metastatic phenotypes. In addition, re-introducing miR-4284 reversed the expression profile of EMT markers.

Conclusion: Our findings for the first time identify miR-4284 as an anti-tumor miRNA in colon cancer, which acts to reduce PLIN5 and inhibit EMT, leading to inhibited colon cancer tumorigenesis. These results highlight the potential of miR-4284 as a therapeutic target in metastatic colon cancer.


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How to Cite
Miao, X., Li, Z., Zhang, Y., & Wang, T. (2021). MicroRNA-4284 inhibits colon cancer epithelial-mesenchymal transition by down-regulating Perilipin 5. STEMedicine, 2(6), e85. https://doi.org/10.37175/stemedicine.v2i6.85
Research articles