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

Oncology Letters
Alma Yolanda Vázquez-SánchezJavier Camacho

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....Continue Reading

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Methods Mentioned

BETA
hysterectomy
biopsies
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xenografts

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GraphPad
GraphPad Prism
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