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Int. J. Mol. Sci. 2014, 15(1), 560-573; doi:10.3390/ijms15010560
Article

Combined MicroRNA-340 and ROCK1 mRNA Profiling Predicts Tumor Progression and Prognosis in Pediatric Osteosarcoma

1
, 2
, 3
, 4
 and 1,*
Received: 29 October 2013; in revised form: 12 December 2013 / Accepted: 23 December 2013 / Published: 6 January 2014
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Abstract: To investigate the association of combined microRNA-340 (miR-340) and ROCK1 mRNA profiling with clinicopathologic features and prognosis in pediatric patients with osteosarcoma. Quantitative real-time reverse transcriptase-polymerase chain reaction analysis was performed to detect expression levels of miR-340 and ROCK1 mRNA in cancerous and noncancerous bone tissues from 92 children treated for primary osteosarcomas. Compared with noncancerous bone tissues, the expression levels of miR-340 and ROCK1 mRNA were, respectively, downregulated and upregulated in osteosarcoma tissues (both p < 0.001), which was consistent with the results of in situ hybridization and immunohistochemistry analysis. The downregulation of miR-340 was negatively correlated with the upregulation of ROCK1 mRNA in osteosarcoma tissues (r = −0.78, p = 0.001). In addition, the combined miR-340 downregulation and ROCK1 upregulation (miR-340-low/ROCK1-high) occurred more frequently in osteosarcoma tissues with positive metastasis (p < 0.001) and poor response to pre-operative chemotherapy (p = 0.002). Moreover, miR-340-low/ROCK1-high expression was significantly associated with both shortest overall survival (p < 0.001) and progression-free survival (p < 0.001). Multivariate analysis further confirmed that miR-340-low/ROCK1-high expression was an independent prognostic factor of unfavorable survival in pediatric osteosarcoma (for overall survival: p = 0.006, for progression-free survival: p = 0.008). Our data offer convincing evidence, for the first time, that the combined miR-340 downregulation and ROCK1 upregulation may be linked to tumor progression and adverse prognosis in pediatric osteosarcoma.
Keywords: pediatric osteosarcoma; microRNA-340; ROCK1; clinicopathologic features; overall survival; progression-free survival pediatric osteosarcoma; microRNA-340; ROCK1; clinicopathologic features; overall survival; progression-free survival
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Cai, H.; Lin, L.; Cai, H.; Tang, M.; Wang, Z. Combined MicroRNA-340 and ROCK1 mRNA Profiling Predicts Tumor Progression and Prognosis in Pediatric Osteosarcoma. Int. J. Mol. Sci. 2014, 15, 560-573.

AMA Style

Cai H, Lin L, Cai H, Tang M, Wang Z. Combined MicroRNA-340 and ROCK1 mRNA Profiling Predicts Tumor Progression and Prognosis in Pediatric Osteosarcoma. International Journal of Molecular Sciences. 2014; 15(1):560-573.

Chicago/Turabian Style

Cai, Haiqing; Lin, Lijun; Cai, Haikang; Tang, Mingjie; Wang, Zhigang. 2014. "Combined MicroRNA-340 and ROCK1 mRNA Profiling Predicts Tumor Progression and Prognosis in Pediatric Osteosarcoma." Int. J. Mol. Sci. 15, no. 1: 560-573.



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