Carcinogenesis, Teratogenesis & Mutagenesis ›› 2017, Vol. 29 ›› Issue (1): 55-59.doi: 10.3969/j.issn.1004-616x.2017.01.011

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Expression of miR-19a and miR-19b and their clinical significance in osteosarcoma

HU Weixin1, ZHAO Zhiwei2   

  1. 1. Orthopedics Department II Ward, Kaifeng Central Hospital, Kaifeng 475000;
    2. Physiatry Department, the First Affilliated Hospital of Henan University of Science and Technology, Kaifeng 475000, Henan, China
  • Received:2016-09-08 Revised:2016-12-05 Online:2017-01-31 Published:2017-01-31

Abstract:

OBJECTIVE: To investigate the expression of miR-19a and miR-19b in osteosarcoma and adjacent non-cancerous tissues,and their correlation with clinicopathologic characteristics. METHODS: 32 cases of osteosar-coma tissues and paired adjacent non-cancerous tissues were collected. qPCR was used to detect the expressions of miR-19a and miR-19b in the two tissues. Correlation between expression of the miRNA and clinical pathologic changes was performed. RESULTS: Expression of miR-19a and miR-19b was significantly up-regulated in osteosarcoma tissues as compared with the adjacent non-cancerous tissues. Their expression nucleic acid levels was positively and significantly correlated with pathologic gradings (all P < 0.05). The expression of the miR-19a was also positive correlated with clinical stage of osteosarcoma and related to the prognosis (r=0.685,P < 0.05). Multivariate analyses suggested that miR-19a expression was an independent predictor for overall survival (P=0.037). CONCLUSION: Our study showed that miR-19a and miR-19b may play an important role in the tumorigenesis and progression of osteosarcoma. In particular,miR-19a may serve as a prognostic marker and therapeutic target for osteosacoma.

Key words: osteosarcoma, miR-19a, miR-19b, prognosis

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