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Review
. 2016 Feb;57(2):176-92.
doi: 10.1194/jlr.R059154. Epub 2015 Aug 24.

Phosphatidylinositolphosphate phosphatase activities and cancer

Simon A Rudge  1 , Michael J O Wakelam  1
Affiliations
Review

Phosphatidylinositolphosphate phosphatase activities and cancer

Simon A Rudge et al. J Lipid Res. 2016 Feb.

Abstract

Signaling through the phosphoinositide 3-kinase pathways mediates the actions of a plethora of hormones, growth factors, cytokines, and neurotransmitters upon their target cells following receptor occupation. Overactivation of these pathways has been implicated in a number of pathologies, in particular a range of malignancies. The tight regulation of signaling pathways necessitates the involvement of both stimulatory and terminating enzymes; inappropriate activation of a pathway can thus result from activation or inhibition of the two signaling arms. The focus of this review is to discuss, in detail, the activities of the identified families of phosphoinositide phosphatase expressed in humans, and how they regulate the levels of phosphoinositides implicated in promoting malignancy.

Keywords: cancer; lipid kinases; phosphatases/lipid; phosphoinositide 3-kinase; phosphoinositides.

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Figures

Fig. 1.
Fig. 1.
Inactivation of the phosphoinositide phosphatases PTEN, INPP5J, SHIP1/INPP5D, SHIP2/INPPL1, INPP5E, and INPP4B results in sustained PDK1- and AKT-mediated cell signaling as a result of deficient PtdIns(3,4,5)P3 and PtdIns(3,4)P2 metabolism.
See this image and copyright information in PMC

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