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Article

MAPK and Hippo signaling pathways crosstalk via the RAF-1/MST-2 interaction in malignant melanoma

  • Authors:
    • Ruizheng Feng
    • Junsheng Gong
    • Lina Wu
    • Lei Wang
    • Baolin Zhang
    • Gang Liang
    • Huixia Zheng
    • Hong Xiao
  • View Affiliations / Copyright

    Affiliations: Department of Plastic Surgery, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi 030024, P.R. China, Department of Pathology, The First Hospital of Shanxi Medical University, Taiyuan, Shanxi 030024, P.R. China, Department of Gerontology, Shanxi Dayi Hospital, Taiyuan, Shanxi 030000, P.R. China
  • Pages: 1199-1205
    |
    Published online on: June 30, 2017
       https://doi.org/10.3892/or.2017.5774
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Abstract

The aim of the present study was to expound on the interactions between the mitogen-activated protein kinase (MAPK) and Hippo pathway members, and to further elucidate the molecular mechanisms of melanoma tumorigenesis. Four melanoma cell lines (C32, HS695T, SK-MEL-28 and A375) were used in the present study. Western blotting was used to assess the expression levels of the MAPK and Hippo pathway effector proteins: rapidly accelerated fibrosarcoma-1 proto-oncogene, serine/threonine kinase (RAF-1); serine/threonine kinase 3 (STK3; also known as MST-2); yes-associated protein (YAP); and tafazzin (TAZ). Immunoprecipitation was used to identify interactions between the effector proteins of the Hippo and MAPK pathways. RAF-1 was knocked down in melanoma cells using siRNA transfection, and cell proliferation, migration and invasion were determined by the MTT, wound-healing and Transwell invasion assays, respectively. Additionally, the cell cycle and apoptosis were analyzed by flow cytometry 48 h after RAF-1 knockdown. We found that the expression levels of the four proteins were variable, and that the HS695T cells expressed the highest levels of RAF-1. Immunoprecipitation studies revealed that RAF-1 bound to MST-2 in melanoma cells. Knockdown of RAF-1 inhibited the expression of YAP and TAZ, but did not affect MST-2 expression. Additionally, RAF-1 knockdown in melanoma cells significantly inhibited cell proliferation, migration and invasion, and induced apoptosis in these cells. Collectively, our results indicate that the RAF-1/MST-2 interaction may be a novel link between the MAPK and Hippo pathways.
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Copy and paste a formatted citation
Spandidos Publications style
Feng R, Gong J, Wu L, Wang L, Zhang B, Liang G, Zheng H and Xiao H: MAPK and Hippo signaling pathways crosstalk via the RAF-1/MST-2 interaction in malignant melanoma. Oncol Rep 38: 1199-1205, 2017.
APA
Feng, R., Gong, J., Wu, L., Wang, L., Zhang, B., Liang, G. ... Xiao, H. (2017). MAPK and Hippo signaling pathways crosstalk via the RAF-1/MST-2 interaction in malignant melanoma. Oncology Reports, 38, 1199-1205. https://doi.org/10.3892/or.2017.5774
MLA
Feng, R., Gong, J., Wu, L., Wang, L., Zhang, B., Liang, G., Zheng, H., Xiao, H."MAPK and Hippo signaling pathways crosstalk via the RAF-1/MST-2 interaction in malignant melanoma". Oncology Reports 38.2 (2017): 1199-1205.
Chicago
Feng, R., Gong, J., Wu, L., Wang, L., Zhang, B., Liang, G., Zheng, H., Xiao, H."MAPK and Hippo signaling pathways crosstalk via the RAF-1/MST-2 interaction in malignant melanoma". Oncology Reports 38, no. 2 (2017): 1199-1205. https://doi.org/10.3892/or.2017.5774
Copy and paste a formatted citation
x
Spandidos Publications style
Feng R, Gong J, Wu L, Wang L, Zhang B, Liang G, Zheng H and Xiao H: MAPK and Hippo signaling pathways crosstalk via the RAF-1/MST-2 interaction in malignant melanoma. Oncol Rep 38: 1199-1205, 2017.
APA
Feng, R., Gong, J., Wu, L., Wang, L., Zhang, B., Liang, G. ... Xiao, H. (2017). MAPK and Hippo signaling pathways crosstalk via the RAF-1/MST-2 interaction in malignant melanoma. Oncology Reports, 38, 1199-1205. https://doi.org/10.3892/or.2017.5774
MLA
Feng, R., Gong, J., Wu, L., Wang, L., Zhang, B., Liang, G., Zheng, H., Xiao, H."MAPK and Hippo signaling pathways crosstalk via the RAF-1/MST-2 interaction in malignant melanoma". Oncology Reports 38.2 (2017): 1199-1205.
Chicago
Feng, R., Gong, J., Wu, L., Wang, L., Zhang, B., Liang, G., Zheng, H., Xiao, H."MAPK and Hippo signaling pathways crosstalk via the RAF-1/MST-2 interaction in malignant melanoma". Oncology Reports 38, no. 2 (2017): 1199-1205. https://doi.org/10.3892/or.2017.5774
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