Open Access

TNFα and TGFβ‑1 synergistically increase the cancer stem cell properties of MiaPaCa‑2 cells

  • Authors:
    • Aikyn Kali
    • Yekaterina O. Ostapchuk
    • Nikolai N. Belyaev
  • View Affiliations

  • Published online on: August 24, 2017     https://doi.org/10.3892/ol.2017.6810
  • Pages: 4647-4658
  • Copyright: © Kali et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Increased serum concentrations of tumor necrosis factor α (TNFα) and transforming growth factor β‑1 (TGFβ‑1) in the blood of patients with pancreatic cancer (PC) have previously been demonstrated. In addition, exogenous exposure to these cytokines promotes various cancer cell invasive and cancer stem cell (CSC) phenotypes. However, their importance in pancreatic CSCs remains elusive. In the present study, the effects of TNFα and TGFβ‑1 on the human PC cell line MiaPaCa‑2 were examined. Using flow cytometry, it was revealed that TNFα and TGFβ‑1 synergistically increase cluster of differentiation (CD) 44v6, CD133 and ATP‑binding cassette transporter G2 (ABCG2) expressing populations in adherent tumor cell culture conditions. Furthermore, a similar trend was observed in cells pretreated with these cytokines grown in sphere forming culture conditions. Similar to previous studies, TNFα treatment increased the proportion of epidermal growth factor receptor (EGFR) expressing cells in adherent culture, and this data was further supported by the results of the sphere formation assay, in which the subculture with a high proportion of EGFR expressing cells exhibited the most efficient sphere forming ability. However, the proportion of vascular endothelial growth factor receptor 1 (VEGFR1) expressing cells did not increase upon treatment with these cytokines individually or in combination. This data was subsequently supported by the results of the wound healing assay in which cytokine treatment did not increase the migration of cells. The MTT cell proli­feration and cytotoxicity assay revealed that TNFα + TGFβ‑1 treatment significantly increased cell proliferation and daunorubicin resistance, but not gemcitabine resistance. In conclusion, the data of the current study provide a mechanistic association between TNFα, TGFβ‑1 and the CSC properties of MiaPaCa‑2 cells. In addition, it suggests that targeting TNFα and TGFβ‑1 is beneficial for improving the therapeutic efficacy of treatments for patients with PC.
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October-2017
Volume 14 Issue 4

Print ISSN: 1792-1074
Online ISSN:1792-1082

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Spandidos Publications style
Kali A, Ostapchuk YO and Belyaev NN: TNFα and TGFβ‑1 synergistically increase the cancer stem cell properties of MiaPaCa‑2 cells. Oncol Lett 14: 4647-4658, 2017.
APA
Kali, A., Ostapchuk, Y.O., & Belyaev, N.N. (2017). TNFα and TGFβ‑1 synergistically increase the cancer stem cell properties of MiaPaCa‑2 cells. Oncology Letters, 14, 4647-4658. https://doi.org/10.3892/ol.2017.6810
MLA
Kali, A., Ostapchuk, Y. O., Belyaev, N. N."TNFα and TGFβ‑1 synergistically increase the cancer stem cell properties of MiaPaCa‑2 cells". Oncology Letters 14.4 (2017): 4647-4658.
Chicago
Kali, A., Ostapchuk, Y. O., Belyaev, N. N."TNFα and TGFβ‑1 synergistically increase the cancer stem cell properties of MiaPaCa‑2 cells". Oncology Letters 14, no. 4 (2017): 4647-4658. https://doi.org/10.3892/ol.2017.6810