Genetic association analysis of inositol polyphosphate phosphatase-like 1 (INPPL1, SHIP2) variants with essential hypertension

A second locus for Schneckenbecken dysplasia identified by a mutation in the gene encoding inositol polyphosphate phosphatase-like 1 (INPPL1).

Properties of inositol polyphosphate 1-phosphatase.

We recently described inositol polyphosphate 1-phosphatase, an enzyme which cleaves the 1-phosphate from inositol 1,4-bisphosphate (Ins(1,4)P2) and inositol 1,3,4-trisphosphate (Ins(1,3,4)P3) (Inhorn, R. C., and Majerus, P. W. (1987) J. Biol. Chem. 262, 15946-15952). We have now purified the enzyme to homogeneity from calf brain. The enzyme hydrolyzes 50.3 mumol of Ins(1,4)P2/min/mg protein. Th...

High expression of inositol polyphosphate phosphatase-like 1 associates with unfavorable survival in hepatocellular carcinoma.

Inositol polyphosphate phosphatase-like 1 (INPPL1), also known as SH2-containing inositol 5'-phosphatase 2 (SHIP2), has been suggested to act downstream of the PI3K/AKT pathway and play an important function in tumor development and progression. However, the associations between SHIP2 expression and the clinical features to determine its clinicopathologic significance in hepatocellular carcinom...

Polymorphisms in type II SH2 domain-containing inositol 5-phosphatase (INPPL1, SHIP2) are associated with physiological abnormalities of the metabolic syndrome.

Type II SH2 domain-containing inositol 5-phosphatase (INPPL1, or SHIP2) plays an important role in the control of insulin sensitivity. INPPL1 mutations affecting gene function have been found in rat models of type 2 diabetes and hypertension and in type 2 diabetic patients. We investigated the influence of nucleotide variation in INPPL1 on components of the metabolic syndrome. Following compreh...

Synaptic Defects and Compensatory Regulation of Inositol Metabolism in Inositol Polyphosphate 1-Phosphatase Mutants

Phosphoinositides function as important second messengers in a wide range of cellular processes. Inositol polyphosphate 1-phosphatase (IPP) is an enzyme essential for the hydrolysis of the 1-phosphate from either Ins(1,4)P2 or Ins(1,3,4)P3. This enzyme is Li+ sensitive, and is one of the proposed targets of Li+ therapy in manic-depressive illness. Drosophila ipp mutants accumulate IP2 in their ...