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2016 ; 2
(7
): 378-390
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The Hidden Conundrum of Phosphoinositide Signaling in Cancer
#MMPMID27819060
Thapa N
; Tan X
; Choi S
; Lambert PF
; Rapraeger AC
; Anderson RA
Trends Cancer
2016[Jul]; 2
(7
): 378-390
PMID27819060
show ga
Phosphoinositide 3-kinase (PI3K) generation of PI(3,4,5)P(3) from PI(4,5)P(2) and
the subsequent activation of Akt and its downstream signaling cascades (e.g.
mTORC1) dominates the landscape of phosphoinositide signaling axis in cancer
research. However, PI(4,5)P(2) is breaking its boundary as merely a substrate for
PI3K and phospholipase C (PLC), and is now an established lipid messenger pivotal
for different cellular events in cancer. Here, we review the phosphoinositide
signaling axis in cancer, giving due weight to PI(4,5)P(2) and its generating
enzymes, the phosphatidylinositol phosphate (PIP) kinases (PIPKs). We highlighted
how PI(4,5)P(2) and PIP kinases serve as a proximal node in phosphoinositide
signaling axis and how its interaction with cytoskeletal proteins regulates
migratory and invasive nexus of metastasizing tumor cells.