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Roles of voltage‑gated potassium channels in the maintenance of pancreatic cancer stem cells

  • Authors:
    • Atsushi Shiozaki
    • Tomoki Konishi
    • Toshiyuki Kosuga
    • Michihiro Kudou
    • Kento Kurashima
    • Hiroyuki Inoue
    • Katsutoshi Shoda
    • Tomohiro Arita
    • Hirotaka Konishi
    • Ryo Morimura
    • Shuhei Komatsu
    • Hisashi Ikoma
    • Atsushi Toma
    • Takeshi Kubota
    • Hitoshi Fujiwara
    • Kazuma Okamoto
    • Eigo Otsuji
  • View Affiliations / Copyright

    Affiliations: Division of Digestive Surgery, Department of Surgery, Kyoto Prefectural University of Medicine, Kyoto 602‑8566, Japan
    Copyright: © Shiozaki et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Article Number: 76
    |
    Published online on: August 12, 2021
       https://doi.org/10.3892/ijo.2021.5256
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Abstract

The targeting of membrane proteins that are activated in cancer stem cells (CSCs) represents one of the key recent strategies in cancer therapy. The present study analyzed ion channel expression profiles and functions in pancreatic CSCs (PCSCs). Cells strongly expressing aldehyde dehydrogenase 1 family member A1 (ALDH1A1) were isolated from the human pancreatic PK59 cell line using fluorescence‑activated cell sorting, and PCSCs were identified based on tumorsphere formation. Microarray analysis was performed to investigate the gene expression profiles in PCSCs. ALDH1A1 messenger RNA levels were higher in PCSCs compared with non‑PCSCs. PCSCs were resistant to 5‑fluorouracil and capable of redifferentiation. The results of the microarray analysis revealed that gene expression related to ion channels, including voltage‑gated potassium channels (Kv), was upregulated in PCSCs compared with non‑PCSCs. 4‑Aminopyridine (4‑AP), a potent Kv inhibitor, exhibited greater cytotoxicity in PCSCs compared with non‑PCSCs. In a xenograft model in nude mice, tumor volumes were significantly lower in mice inoculated with PK59 cells pre‑treated with 4‑AP compared with those in mice injected with non‑treated cells. The present results identified a role of Kv in the persistence of PCSCs and suggested that the Kv inhibitor 4‑AP may have potential as a therapeutic agent for pancreatic carcinoma.
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Copy and paste a formatted citation
Spandidos Publications style
Shiozaki A, Konishi T, Kosuga T, Kudou M, Kurashima K, Inoue H, Shoda K, Arita T, Konishi H, Morimura R, Morimura R, et al: Roles of voltage‑gated potassium channels in the maintenance of pancreatic cancer stem cells. Int J Oncol 59: 76, 2021.
APA
Shiozaki, A., Konishi, T., Kosuga, T., Kudou, M., Kurashima, K., Inoue, H. ... Otsuji, E. (2021). Roles of voltage‑gated potassium channels in the maintenance of pancreatic cancer stem cells. International Journal of Oncology, 59, 76. https://doi.org/10.3892/ijo.2021.5256
MLA
Shiozaki, A., Konishi, T., Kosuga, T., Kudou, M., Kurashima, K., Inoue, H., Shoda, K., Arita, T., Konishi, H., Morimura, R., Komatsu, S., Ikoma, H., Toma, A., Kubota, T., Fujiwara, H., Okamoto, K., Otsuji, E."Roles of voltage‑gated potassium channels in the maintenance of pancreatic cancer stem cells". International Journal of Oncology 59.4 (2021): 76.
Chicago
Shiozaki, A., Konishi, T., Kosuga, T., Kudou, M., Kurashima, K., Inoue, H., Shoda, K., Arita, T., Konishi, H., Morimura, R., Komatsu, S., Ikoma, H., Toma, A., Kubota, T., Fujiwara, H., Okamoto, K., Otsuji, E."Roles of voltage‑gated potassium channels in the maintenance of pancreatic cancer stem cells". International Journal of Oncology 59, no. 4 (2021): 76. https://doi.org/10.3892/ijo.2021.5256
Copy and paste a formatted citation
x
Spandidos Publications style
Shiozaki A, Konishi T, Kosuga T, Kudou M, Kurashima K, Inoue H, Shoda K, Arita T, Konishi H, Morimura R, Morimura R, et al: Roles of voltage‑gated potassium channels in the maintenance of pancreatic cancer stem cells. Int J Oncol 59: 76, 2021.
APA
Shiozaki, A., Konishi, T., Kosuga, T., Kudou, M., Kurashima, K., Inoue, H. ... Otsuji, E. (2021). Roles of voltage‑gated potassium channels in the maintenance of pancreatic cancer stem cells. International Journal of Oncology, 59, 76. https://doi.org/10.3892/ijo.2021.5256
MLA
Shiozaki, A., Konishi, T., Kosuga, T., Kudou, M., Kurashima, K., Inoue, H., Shoda, K., Arita, T., Konishi, H., Morimura, R., Komatsu, S., Ikoma, H., Toma, A., Kubota, T., Fujiwara, H., Okamoto, K., Otsuji, E."Roles of voltage‑gated potassium channels in the maintenance of pancreatic cancer stem cells". International Journal of Oncology 59.4 (2021): 76.
Chicago
Shiozaki, A., Konishi, T., Kosuga, T., Kudou, M., Kurashima, K., Inoue, H., Shoda, K., Arita, T., Konishi, H., Morimura, R., Komatsu, S., Ikoma, H., Toma, A., Kubota, T., Fujiwara, H., Okamoto, K., Otsuji, E."Roles of voltage‑gated potassium channels in the maintenance of pancreatic cancer stem cells". International Journal of Oncology 59, no. 4 (2021): 76. https://doi.org/10.3892/ijo.2021.5256
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