Upregulated CXCL14 is associated with poor survival outcomes and promotes ovarian cancer cells proliferation.

CELL BIOCHEMISTRY AND FUNCTION(2020)

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摘要
Ovarian cancer is one of the common malignant tumours of female reproductive organs. Due to early diagnosis difficulties and lack of effective treatment in the late stage, ovarian cancer has the highest mortality rate in female reproductive system malignancies. Therefore, finding reliable early diagnosis indicators and new therapeutic targets for ovarian cancer is an urgent problem to be solved. Chemokine (C-X-C motif) ligand 14 (CXCL14) is a small cytokine belonging to the CXC chemokine family, which has been found to possess multi-effects in tumourigenesis and development. Here, we reported that CXCL14 was preferentially expressed in ovarian cancer. By analysing the TCGA database, we found that CXCL14 was highly expressed in advanced ovarian cancer patients and correlated with poor prognosis. In addition, the abnormal high CXCL14 levels were observed in serum and ovarian tissue of ovarian cancer patients by qRT-PCR and ELISA. In vitro and in vivo experiments both confirmed that overexpression of CXCL14 promoted the ovarian cancer cell proliferation. Moreover, transfection of CXCL14 increased the phosphorylation level of signal transducer and activator of transcription 3 (STAT3), and administration of STAT3 inhibitor III inhibited the tumour-promoting effects of CXCL14. Therefore, our study suggests that CXCL14 could be utilised as a novel adjunct biomarker for early diagnosis of ovarian cancer and provides new targets and ideas for the treatment of advanced ovarian cancer. SIGNIFICANCE PARAGRAPH: CXCL14 could be utilised as a novel adjunct biomarker for early diagnosis of ovarian cancer and provides new targets and ideas for the treatment of advanced ovarian cancer.
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Chemokine (C-X-C motif) ligand 14 (CXCL14),ovarian cancer,early diagnosis,transducer and activator of transcription 3 (STAT3)
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