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Article

Regulation of miR-155 affects pancreatic cancer cell invasiveness and migration by modulating the STAT3 signaling pathway through SOCS1

  • Authors:
    • Chen Huang
    • Haidong Li
    • Weidong Wu
    • Tao Jiang
    • Zhengjun Qiu
  • View Affiliations / Copyright

    Affiliations: Department of General Surgery, Affiliated First People's Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200080, P.R. China
  • Pages: 1223-1230
    |
    Published online on: June 28, 2013
       https://doi.org/10.3892/or.2013.2576
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Abstract

In the present study, we investigated the effects of miR-155 on pancreatic cancer cell invasion and migration in vitro, underlying gene expression, expression of miR-155 and its target genes in pancreatic cancer tissues, and their association with metastasis and clinical stage. miR-155 mimics and an inhibitor were transfected into Panc-1 and Capan-2 cells in order to regulate the expression of miR-155. qPCR and western immunoblotting were performed in order to detect gene expression. Transwell assays were performed to characterize the invasion and migration of pancreatic cancer cells in vitro. Immunohistochemical analysis and in situ hybridization were used to detect the expression of protein and microRNA in pancreatic cancer tissue. miR-155 mimics and an inhibitor upregulated and downregulated, respectively, the expression of miR-155 in pancreatic cancer cells. The invasion and migration of pancreatic cancer cells increased or decreased along with miR-155 expression in vitro. Suppressor of cytokine signaling 1 (SOCS1) protein expression was upregulated when miR-155 was inhibited and downregulated when miR-155 was increased. However, the expression of P-signal transducer and activator of transcription-3 (STAT3) was synchronized with that of miR-155. Transcription of SOCS1 and STAT3 was unchanged by miR-155 regulation. miR-155 expression was high in pancreatic cancer tissues and SOCS1 expression was high in tumor-adjacent tissues. There was no relationship between these genes in cancer and tumor-adjacent tissues. In addition, miR-155 expression was associated with lymph node metastasis and clinical stage. In conclusion, miR-155 plays an important role in the regulation of pancreatic cancer cell invasion and migration by modulating the STAT3 signaling pathway and reducing SOCS1 expression in pancreatic cancer cells.
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Copy and paste a formatted citation
Spandidos Publications style
Huang C, Li H, Wu W, Jiang T and Qiu Z: Regulation of miR-155 affects pancreatic cancer cell invasiveness and migration by modulating the STAT3 signaling pathway through SOCS1. Oncol Rep 30: 1223-1230, 2013.
APA
Huang, C., Li, H., Wu, W., Jiang, T., & Qiu, Z. (2013). Regulation of miR-155 affects pancreatic cancer cell invasiveness and migration by modulating the STAT3 signaling pathway through SOCS1. Oncology Reports, 30, 1223-1230. https://doi.org/10.3892/or.2013.2576
MLA
Huang, C., Li, H., Wu, W., Jiang, T., Qiu, Z."Regulation of miR-155 affects pancreatic cancer cell invasiveness and migration by modulating the STAT3 signaling pathway through SOCS1". Oncology Reports 30.3 (2013): 1223-1230.
Chicago
Huang, C., Li, H., Wu, W., Jiang, T., Qiu, Z."Regulation of miR-155 affects pancreatic cancer cell invasiveness and migration by modulating the STAT3 signaling pathway through SOCS1". Oncology Reports 30, no. 3 (2013): 1223-1230. https://doi.org/10.3892/or.2013.2576
Copy and paste a formatted citation
x
Spandidos Publications style
Huang C, Li H, Wu W, Jiang T and Qiu Z: Regulation of miR-155 affects pancreatic cancer cell invasiveness and migration by modulating the STAT3 signaling pathway through SOCS1. Oncol Rep 30: 1223-1230, 2013.
APA
Huang, C., Li, H., Wu, W., Jiang, T., & Qiu, Z. (2013). Regulation of miR-155 affects pancreatic cancer cell invasiveness and migration by modulating the STAT3 signaling pathway through SOCS1. Oncology Reports, 30, 1223-1230. https://doi.org/10.3892/or.2013.2576
MLA
Huang, C., Li, H., Wu, W., Jiang, T., Qiu, Z."Regulation of miR-155 affects pancreatic cancer cell invasiveness and migration by modulating the STAT3 signaling pathway through SOCS1". Oncology Reports 30.3 (2013): 1223-1230.
Chicago
Huang, C., Li, H., Wu, W., Jiang, T., Qiu, Z."Regulation of miR-155 affects pancreatic cancer cell invasiveness and migration by modulating the STAT3 signaling pathway through SOCS1". Oncology Reports 30, no. 3 (2013): 1223-1230. https://doi.org/10.3892/or.2013.2576
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