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Article

Upregulation of the splice variant MUC4/Y in the pancreatic cancer cell line MIA PaCa-2 potentiates proliferation and suppresses apoptosis: New insight into the presence of the transcript variant of MUC4

  • Authors:
    • Kunling Xie
    • Xiaofei Zhi
    • Jie Tang
    • Yi Zhu
    • Jingjing Zhang
    • Zheng Li
    • Jinqiu Tao
    • Zekuan Xu
  • View Affiliations / Copyright

    Affiliations: Department of General Surgery, First Affiliated Hospital, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
  • Pages: 2187-2194
    |
    Published online on: March 27, 2014
       https://doi.org/10.3892/or.2014.3113
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Abstract

MUC4/Y, the transcript variant 4 of MUC4, lacks exon 2 as compared with the transcript variant 1 of MUC4. To date, direct evidence for the function of MU4/Y remains to be reported. Previous studies based their hypotheses regarding the function of MUC4/Y on the characteristic structure domains of this variant. The aim of the present study was to investigate the specific function of MUC4/Y. The pancreatic cancer cell line MIA PaCa-2 with low MUC4/Y expression was used to establish a stable cell model of MUC4/Y upregulation using a lentivirus vector system. Results showed that MUC4/Y anchored on the cytomembrane and affected cell morphology and cell cycle. Functional analyses indicated that MUC4/Y upregulation slightly potentiated cell proliferation and significantly suppressed apoptosis both in vivo and in vitro. Further studies revealed that the JNK and AKT signalling pathways were activated. Meanwhile, MUC4/Y upregulation elicited minimal effect on the phosphorylation level of HER2, a membrane partner of MUC4. These results suggest that MUC4/Y promotes tumour progression through its anti-apoptotic and weak mitogenic effect on MIA PaCa-2 cells.
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Copy and paste a formatted citation
Spandidos Publications style
Xie K, Zhi X, Tang J, Zhu Y, Zhang J, Li Z, Tao J and Xu Z: Upregulation of the splice variant MUC4/Y in the pancreatic cancer cell line MIA PaCa-2 potentiates proliferation and suppresses apoptosis: New insight into the presence of the transcript variant of MUC4. Oncol Rep 31: 2187-2194, 2014.
APA
Xie, K., Zhi, X., Tang, J., Zhu, Y., Zhang, J., Li, Z. ... Xu, Z. (2014). Upregulation of the splice variant MUC4/Y in the pancreatic cancer cell line MIA PaCa-2 potentiates proliferation and suppresses apoptosis: New insight into the presence of the transcript variant of MUC4. Oncology Reports, 31, 2187-2194. https://doi.org/10.3892/or.2014.3113
MLA
Xie, K., Zhi, X., Tang, J., Zhu, Y., Zhang, J., Li, Z., Tao, J., Xu, Z."Upregulation of the splice variant MUC4/Y in the pancreatic cancer cell line MIA PaCa-2 potentiates proliferation and suppresses apoptosis: New insight into the presence of the transcript variant of MUC4". Oncology Reports 31.5 (2014): 2187-2194.
Chicago
Xie, K., Zhi, X., Tang, J., Zhu, Y., Zhang, J., Li, Z., Tao, J., Xu, Z."Upregulation of the splice variant MUC4/Y in the pancreatic cancer cell line MIA PaCa-2 potentiates proliferation and suppresses apoptosis: New insight into the presence of the transcript variant of MUC4". Oncology Reports 31, no. 5 (2014): 2187-2194. https://doi.org/10.3892/or.2014.3113
Copy and paste a formatted citation
x
Spandidos Publications style
Xie K, Zhi X, Tang J, Zhu Y, Zhang J, Li Z, Tao J and Xu Z: Upregulation of the splice variant MUC4/Y in the pancreatic cancer cell line MIA PaCa-2 potentiates proliferation and suppresses apoptosis: New insight into the presence of the transcript variant of MUC4. Oncol Rep 31: 2187-2194, 2014.
APA
Xie, K., Zhi, X., Tang, J., Zhu, Y., Zhang, J., Li, Z. ... Xu, Z. (2014). Upregulation of the splice variant MUC4/Y in the pancreatic cancer cell line MIA PaCa-2 potentiates proliferation and suppresses apoptosis: New insight into the presence of the transcript variant of MUC4. Oncology Reports, 31, 2187-2194. https://doi.org/10.3892/or.2014.3113
MLA
Xie, K., Zhi, X., Tang, J., Zhu, Y., Zhang, J., Li, Z., Tao, J., Xu, Z."Upregulation of the splice variant MUC4/Y in the pancreatic cancer cell line MIA PaCa-2 potentiates proliferation and suppresses apoptosis: New insight into the presence of the transcript variant of MUC4". Oncology Reports 31.5 (2014): 2187-2194.
Chicago
Xie, K., Zhi, X., Tang, J., Zhu, Y., Zhang, J., Li, Z., Tao, J., Xu, Z."Upregulation of the splice variant MUC4/Y in the pancreatic cancer cell line MIA PaCa-2 potentiates proliferation and suppresses apoptosis: New insight into the presence of the transcript variant of MUC4". Oncology Reports 31, no. 5 (2014): 2187-2194. https://doi.org/10.3892/or.2014.3113
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