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2015 ; 9
(6
): 380-96
Nephropedia Template TP
gab.com Text
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English Wikipedia
Role of volume-regulated and calcium-activated anion channels in cell volume
homeostasis, cancer and drug resistance
#MMPMID26569161
Hoffmann EK
; Sørensen BH
; Sauter DP
; Lambert IH
Channels (Austin)
2015[]; 9
(6
): 380-96
PMID26569161
show ga
Volume-regulated channels for anions (VRAC) / organic osmolytes (VSOAC) play
essential roles in cell volume regulation and other cellular functions, e.g.
proliferation, cell migration and apoptosis. LRRC8A, which belongs to the leucine
rich-repeat containing protein family, was recently shown to be an essential
component of both VRAC and VSOAC. Reduced VRAC and VSOAC activities are seen in
drug resistant cancer cells. ANO1 is a calcium-activated chloride channel
expressed on the plasma membrane of e.g., secretory epithelia. ANO1 is amplified
and highly expressed in a large number of carcinomas. The gene, encoding for
ANO1, maps to a region on chromosome 11 (11q13) that is frequently amplified in
cancer cells. Knockdown of ANO1 impairs cell proliferation and cell migration in
several cancer cells. Below we summarize the basic biophysical properties of
VRAC, VSOAC and ANO1 and their most important cellular functions as well as their
role in cancer and drug resistance.