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Wu ZY, Wang SM, Chen ZH, Huv SX, Huang K, Huang BJ, Du JL, Huang CM, Peng L, Jian ZX, Zhao G. MiR-204 regulates HMGA2 expression and inhibits cell proliferation in human thyroid cancer. Cancer Biomark 2016; 15:535-42. [PMID: 26406941 DOI: 10.3233/cbm-150492] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
BACKGROUND Analysis using publicly available algorithms has found that high mobility group AT-hook 2 (HMGA2), a key transcriptional regulatory factor, is a potential target of microRNA-204 (miR-204). Some studies have shown that both miR-204 and HMGA2 are associated with cancer development. OBJECTIVE We examined the possible relationship between miR-204 and HMGA2 in the development of thyroid cancer. METHODS We assessed miR-204 expression in thyroid cancer specimens and cell lines using real-time polymerase chain reaction (PCR). Luciferase reporter assay was used to confirm the target associations. The effect of miR-204 on cell proliferation was confirmed with tetrazolium and colony formation assays. Gene and protein expression were examined using real-time PCR and western blotting, respectively. RESULTS MiR-204 was downregulated in the thyroid cancer specimens and cell lines, and targeted the 3^\prime untranslated region of HMGA2 directly. MiR-204 overexpression decreased cyclin D1 and Ki67 expression and increased P21 expression, which subsequently inhibited thyroid cancer cell proliferation. CONCLUSIONS Our findings suggest that miR-204 plays a protective role by inhibiting thyroid cancer cell proliferation, and may identify new targets for anti-cancer treatment.
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Affiliation(s)
- Z Y Wu
- Department of General Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - S M Wang
- Department of General Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - Z H Chen
- Department of General Surgery, Hospital of Traditional Chinese Medicine of Zhongshan, Zhongshan, Guangdong, China
| | - S X Huv
- Department of General Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - K Huang
- Department of General Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - B J Huang
- Department of General Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - J L Du
- Department of General Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - C M Huang
- Department of General Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - L Peng
- Department of General Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - Z X Jian
- Department of General Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
| | - G Zhao
- Department of General Surgery, Guangdong General Hospital, Guangdong Academy of Medical Sciences, Guangzhou, Guangdong, China
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