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Overexpression of PITPNM3 promotes hepatocellular carcinoma cell metastasis
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  • 作者:Chonghua He (1) (2)
    Shicheng Su (1) (2)
    Fei Chen (1) (2)
    Di Huang (1) (2)
    Fang Zheng (1)
    Wei Huang (1) (2)
    Jianing Chen (1) (2)
    Xiuying Cui (1)
    Qiang Liu (1) (2)
    Erwei Song (1) (2)
    Herui Yao (1) (3)
    Yujie Liu (1) (2)
  • 关键词:PITPNM3 ; Hepatocellular carcinoma ; Invasion ; Metastasis
  • 刊名:Chinese Science Bulletin
  • 出版年:2014
  • 出版时间:April 2014
  • 年:2014
  • 卷:59
  • 期:12
  • 页码:1326-1333
  • 全文大小:1,552 KB
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  • 作者单位:Chonghua He (1) (2)
    Shicheng Su (1) (2)
    Fei Chen (1) (2)
    Di Huang (1) (2)
    Fang Zheng (1)
    Wei Huang (1) (2)
    Jianing Chen (1) (2)
    Xiuying Cui (1)
    Qiang Liu (1) (2)
    Erwei Song (1) (2)
    Herui Yao (1) (3)
    Yujie Liu (1) (2)

    1. Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation, Medical Research Center, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
    2. Department of Breast Surgery, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
    3. Department of Oncology, Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, 510120, China
  • ISSN:1861-9541
文摘
A previous study indicated that C–C chemokine (C–C motif) ligand 18 (CCL18) is capable of inducing tumor cell invasion and metastasis by interacting with receptor membrane-associated phosphatidylinositol transfer protein 3 (PITPNM3) in breast cancer cells. The present study aims to investigate the correlation between the PITPNM3 expression and metastasis in hepatocellular carcinoma (HCC). Real-time quantitative polymerase chain reaction and Western blot were performed to detect the expression pattern of PITPNM3 in patient samples and HCC cell lines. Wound-healing and transwell chamber assays were performed to assess the migration and invasiveness of HCC cells, and the activation of the signaling protein downstream of PITPNM3 was also detected by Western blot and immunofluorescence. The results revealed that PITPNM3 was upregulated in HCC tissue compared to matched normal liver tissue. Silencing the expression of PITPNM3 by specific siRNAs markedly attenuated the invasive and metastatic abilities of HCC cells, whereas the upregulation of PITPNM3 significantly increased HCC cell mobility. Furthermore, inhibiting the expression of PITPNM3 suppressed the activation of Pyk2, FAK, and Src, while overexpression of PITPNM3 enhanced the phosphorylation of FAK and Src in HCC cells. Besides, suppression of Pyk2 can also impair the clustering of integrin. These results imply that PITPNM3 is a vital determinant of HCC migration and invasion.

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