Big Potassium (BK) ion channels in biology, disease and possible targets for cancer immunotherapy.

Abstract:

:The Big Potassium (BK) ion channel is commonly known by a variety of names (Maxi-K, KCNMA1, slo, stretch-activated potassium channel, KCa1.1). Each name reflects a different physical property displayed by this single ion channel. This transmembrane channel is found on nearly every cell type of the body and has its own distinctive roles for that tissue type. The BKα channel contains the pore that releases potassium ions from intracellular stores. This ion channel is found on the cell membrane, endoplasmic reticulum, Golgi and mitochondria. Complex splicing pathways produce different isoforms. The BKα channels can be phosphorylated, palmitoylated and myristylated. BK is composed of a homo-tetramer that interacts with β and γ chains. These accessory proteins provide a further modulating effect on the functions of BKα channels. BK channels play important roles in cell division and migration. In this review, we will focus on the biology of the BK channel, especially its role, and its immune response towards cancer. Recent proteomic studies have linked BK channels with various proteins. Some of these interactions offer further insight into the role that BK channels have with cancers, especially with brain tumors. This review shows that BK channels have a complex interplay with intracellular components of cancer cells and still have plenty of secrets to be discovered.

journal_name

Int Immunopharmacol

authors

Ge L,Hoa NT,Wilson Z,Arismendi-Morillo G,Kong XT,Tajhya RB,Beeton C,Jadus MR

doi

10.1016/j.intimp.2014.06.040

subject

Has Abstract

pub_date

2014-10-01 00:00:00

pages

427-43

issue

2

eissn

1567-5769

issn

1878-1705

pii

S1567-5769(14)00254-9

journal_volume

22

pub_type

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