Carcinogenesis, Teratogenesis & Mutagenesis ›› 2019, Vol. 31 ›› Issue (3): 180-185,192.doi: 10.3969/j.issn.1004-616x.2019.03.002

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FGFBP2 over-expresssion promoted cell proliferation in esophageal squamous carcinoma cells

SUN Xiaonan1,2, YUAN Qing2, YANG Liyan2, ZHANG Yu2, CAI Yan2, XU Xin2, WANG Mingrong2, HAO Jiajie2, JIA Xuemei1   

  1. 1. Department of Histology and Embryology, Anhui Medical University, Hefei 230032, Anhui;
    2. National Cancer Center/State Key Laboratory of Molecular Oncology, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
  • Received:2019-02-16 Revised:2019-04-12 Online:2019-05-31 Published:2019-05-31

Abstract: OBJECTIVE: This study aimed to detect the expression of human fibroblast growth factor binding protein 2 (FGFBP2) mRNA and to explore its prognostic value in esophageal squamous cell carcinoma (ESCC). METHODS:Tissue microarrays and RNA in situ hybridization (RISH) were used to detect expression of FGFBP2 mRNA in 190 cases of ESCC tissues and 42 cases of adjacent normal tissues. Proliferation assays were utilized to explore the roles of FGFBP2 in ESCC cells in vitro. RESULTS:RISH results show positive expression of FGFBP2 mRNA in 49 out 190 (25.8%) ESCC tissues,whereas no FGFBP2 mRNA signal was detected in normal surgical margins tissues (P<0.01). High expression of FGFBP2 mRNA was correlated with shorter survival time of ESCC patients (P=0.002). Cox regression analyses indicate that FGFBP2 mRNA was an independent prognostic factor in ESCC patients (HR:2.291,95%CI:1.271-4.129,P=0.006). Knockdown of FGFBP2 inhibited the proliferation of ESCC cell lines KYSE150 and KYSE510. Western blotting results demonstrate that knockdown of FGFBP2 decreased the level of phosphorylated AKT (p-AKT) but did not affect the expression of phosphorylated ERK (p-ERK) protein. CONCLUSION: Our data suggest that FGFBP2 mRNA may be a prognosis biomarker of ESCC. With respect to the mechanism, our studies show that knockdown of FGFBP2 depressed proliferation of ESCC cells through activating the AKT pathway.

Key words: esophageal squamous cell carcinoma, FGFBP2, prognostic biomarker, proliferation

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