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01-03-2012 | Laboratory Investigation - Human/Animal Tissue

Ion channels in pediatric CNS Atypical Teratoid/Rhabdoid Tumor (AT/RT) cells: potential targets for novel therapeutic agents

Authors: Umberto Banderali, Aarthi Jayanthan, Kimberley A. Hoeksema, Aru Narendran, Wayne R. Giles

Published in: Journal of Neuro-Oncology | Issue 1/2012

Abstract

The central nervous system Atypical Teratoid/Rhabdoid Tumor (CNS AT/RT) is a highly malignant neoplasm that commonly affects infants and young children, and has an extremely poor prognosis. Recently, a small subset of ion channels have been found to be over-expressed in a variety of malignant cells, thus emerging as potential therapeutic targets for difficult to treat tumors. We have studied the electrophysiological properties of AT/RT cell lines with particular attention to cell volume sensitive ion channels (VSC). This class of membrane proteins can play a fundamental role in cellular processes relevant to tumor development. We have found that chloride selective VSCs are particularly active in AT/RT cell lines, compared to non-tumor cells. We evaluated specific inhibitors for activity against chloride selective VSCs and consequently for their ability to inhibit the growth and survival of AT/RT cells in vitro. The results demonstrated that the extent of volume sensitive membrane current inhibition by these agents was correlated with their potency in AT/RT cell growth inhibition in vitro. In addition, we showed that ion channel inhibition enhanced the activity of certain anti-neoplastic agents, suggesting its value in effective drug combination protocols. Results presented provide preliminary in vitro data for possible evaluation of distinct ion channels as plausible therapeutic targets in the treatment of AT/RT.

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Title: Ion channels in pediatric CNS Atypical Teratoid/Rhabdoid Tumor (AT/RT) cells: potential targets for novel therapeutic agents
Authors: Umberto Banderali
Aarthi Jayanthan
Kimberley A. Hoeksema
Aru Narendran
Wayne R. Giles
Publication date: 01-03-2012
Publisher: Springer US
Published in: Journal of Neuro-Oncology / Issue 1/2012
Print ISSN: 0167-594X
Electronic ISSN: 1573-7373
DOI: https://doi.org/10.1007/s11060-011-0735-x

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Ion channels in pediatric CNS Atypical Teratoid/Rhabdoid Tumor (AT/RT) cells: potential targets for novel therapeutic agents

Abstract

Keynote webinar | Spotlight on medication adherence

Springer Medicine

Abstract

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