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J Int Med Res. 2012;40(5):1662-9.

Decreased expression of microRNA-375 in nonsmall cell lung cancer and its clinical significance.

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1
Department of Respiratory Medicine, Xiangya Hospital, Central South University, Changsha, China.

Abstract

OBJECTIVE:

Emerging evidence has shown the association of aberrant microRNA-375 (miR-375) expression with tumourigenesis in many types of human malignancy. This prospective study characterized the contribution of miR-375 to the initiation and progression of nonsmall cell lung cancer (NSCLC).

METHODS:

The real-time reverse transcription-polymerase chain reaction was used to examine miR-375 levels prospectively in 96 pairs of samples of NSCLC tissue and adjacent noncancerous tissue (> 2 cm from cancer tissue). The relationship between miR-375 levels and clinico pathological features was also explored.

RESULTS:

MiR-375 was downregulated in 89% (85/96) of NSCLC samples compared with matched noncancerous tissue samples. Decreased miR-375 correlated significantly with advanced disease stage and lymphatic metastasis. Univariate and multivariate Cox proportional hazard regression analyses revealed that underexpression of miR-375 was an unfavourable prognostic factor for overall survival in NSCLC.

CONCLUSIONS:

This study suggested that miR-375 is a novel prognostic indicator in NSCLC and might be a potential target for diagnosis and gene therapy.

PMID:
23206448
DOI:
10.1177/030006051204000505
[Indexed for MEDLINE]
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