Open Access

Expression of KATP channels in human cervical cancer: Potential tools for diagnosis and therapy

  • Authors:
    • Alma Yolanda Vázquez‑Sánchez
    • Luz María Hinojosa
    • Sara Parraguirre‑Martínez
    • Aarón González
    • Flavia Morales
    • Gonzalo Montalvo
    • Eunice Vera
    • Elisabeth Hernández‑Gallegos
    • Javier Camacho
  • View Affiliations

  • Published online on: March 2, 2018     https://doi.org/10.3892/ol.2018.8165
  • Pages: 6302-6308
  • Copyright: © Vázquez‑Sánchez et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Various ion channels, including ATP-sensitive potassium (KATP) channels, are expressed in cancer and have been suggested as potential tumor markers and therapeutic targets. KATP channels are composed of at least two types of subunit, an inwardly rectifying K+ channel (Kir6.x) and a sulfonylurea receptor (SUR). However, the association between KATP channels and cervical cancer remains elusive. The present study determined that the Kir6.2, SUR1 and SUR2 subunits are expressed in cervical cancer cell lines and/or human biopsies. The potential association of subunit expression with tumor differentiation and invasion was analyzed. The effect of the KATP channel blocker glibenclamide on the proliferation of cervical cancer cell lines was also studied. Five cervical cancer cell lines, two primary cultures of cervical cancer cells, one normal keratinocyte cell line and 74 human biopsies were used in the experiments. The mRNA and protein levels of the Kir6.2 subunit were assessed by reverse transcription‑polymerase chain reaction and immunochemistry, respectively. Cell proliferation was evaluated by MTT assay. Kir6.2 subunit overexpression compared with control, was observed in some cervical cancer cell lines and cervical tumor tissues. Additionally, increased KATP channel expression was observed in high‑grade, poorly differentiated and invasive human cervical cancer biopsies. Kir6.2 subunit expression was not observed in the majority of the non‑cancerous cervical tissues. The effect of the KATP channel blocker glibenclamide on the proliferation of five different cervical cancer cell lines was studied, revealing that as Kir6.2 mRNA expression increased, the inhibitory effect of glibenclamide also increased. The results of the present study suggest, for the first time to the best of our knowledge, that the KATP channel subunits, Kir6.2 and SUR2, could potentially represent tools for diagnosing and treating cervical cancer.
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May-2018
Volume 15 Issue 5

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

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Spandidos Publications style
Vázquez‑Sánchez AY, Hinojosa LM, Parraguirre‑Martínez S, González A, Morales F, Montalvo G, Vera E, Hernández‑Gallegos E and Camacho J: Expression of KATP channels in human cervical cancer: Potential tools for diagnosis and therapy. Oncol Lett 15: 6302-6308, 2018.
APA
Vázquez‑Sánchez, A.Y., Hinojosa, L.M., Parraguirre‑Martínez, S., González, A., Morales, F., Montalvo, G. ... Camacho, J. (2018). Expression of KATP channels in human cervical cancer: Potential tools for diagnosis and therapy. Oncology Letters, 15, 6302-6308. https://doi.org/10.3892/ol.2018.8165
MLA
Vázquez‑Sánchez, A. Y., Hinojosa, L. M., Parraguirre‑Martínez, S., González, A., Morales, F., Montalvo, G., Vera, E., Hernández‑Gallegos, E., Camacho, J."Expression of KATP channels in human cervical cancer: Potential tools for diagnosis and therapy". Oncology Letters 15.5 (2018): 6302-6308.
Chicago
Vázquez‑Sánchez, A. Y., Hinojosa, L. M., Parraguirre‑Martínez, S., González, A., Morales, F., Montalvo, G., Vera, E., Hernández‑Gallegos, E., Camacho, J."Expression of KATP channels in human cervical cancer: Potential tools for diagnosis and therapy". Oncology Letters 15, no. 5 (2018): 6302-6308. https://doi.org/10.3892/ol.2018.8165