Title : Characterization of AQX-1125, a small-molecule SHIP1 activator: Part 1. Effects on inflammatory cell activation and chemotaxis in vitro and pharmacokinetic characterization in vivo.

Pub. Date : 2013 Mar

PMID : 23121445






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1 Characterization of AQX-1125, a small-molecule SHIP1 activator: Part 1. 4-(4-(aminomethyl)-7a-methyl-1-methylideneoctahydro-1H-inden-5-yl)-3-(hydroxymethyl)-4-methylcyclohexan-1-ol inositol polyphosphate-5-phosphatase D Homo sapiens
2 Here we characterize the efficacy of AQX-1125, a small-molecule SHIP1 activator currently in clinical development. 4-(4-(aminomethyl)-7a-methyl-1-methylideneoctahydro-1H-inden-5-yl)-3-(hydroxymethyl)-4-methylcyclohexan-1-ol inositol polyphosphate-5-phosphatase D Homo sapiens
3 EXPERIMENTAL APPROACH: The effects of AQX-1125 were tested in several in vitro assays: on enzyme catalytic activity utilizing recombinant human SHIP1, on Akt phosphorylation in SHIP1-proficient and SHIP1-deficient cell lines, on cytokine release in murine splenocytes, on human leukocyte chemotaxis using modified Boyden chambers and on beta-hexosaminidase release from murine mast cells. 4-(4-(aminomethyl)-7a-methyl-1-methylideneoctahydro-1H-inden-5-yl)-3-(hydroxymethyl)-4-methylcyclohexan-1-ol inositol polyphosphate-5-phosphatase D Homo sapiens
4 RESULTS: AQX-1125 increased the catalytic activity of human recombinant SHIP1, an effect, which was absent after deletion of the C2 region. 4-(4-(aminomethyl)-7a-methyl-1-methylideneoctahydro-1H-inden-5-yl)-3-(hydroxymethyl)-4-methylcyclohexan-1-ol inositol polyphosphate-5-phosphatase D Homo sapiens
5 AQX-1125 inhibited Akt phosphorylation in SHIP1-proficient but not in SHIP1-deficient cells, reduced cytokine production in splenocytes, inhibited the activation of mast cells and inhibited human leukocyte chemotaxis. 4-(4-(aminomethyl)-7a-methyl-1-methylideneoctahydro-1H-inden-5-yl)-3-(hydroxymethyl)-4-methylcyclohexan-1-ol inositol polyphosphate-5-phosphatase D Homo sapiens
6 CONCLUSIONS: Consistent with the role of SHIP1 in cell activation and chemotaxis, the SHIP1 activator AQX-1125 inhibits Akt phosphorylation, inflammatory mediator production and leukocyte chemotaxis in vitro. 4-(4-(aminomethyl)-7a-methyl-1-methylideneoctahydro-1H-inden-5-yl)-3-(hydroxymethyl)-4-methylcyclohexan-1-ol inositol polyphosphate-5-phosphatase D Homo sapiens
7 CONCLUSIONS: Consistent with the role of SHIP1 in cell activation and chemotaxis, the SHIP1 activator AQX-1125 inhibits Akt phosphorylation, inflammatory mediator production and leukocyte chemotaxis in vitro. 4-(4-(aminomethyl)-7a-methyl-1-methylideneoctahydro-1H-inden-5-yl)-3-(hydroxymethyl)-4-methylcyclohexan-1-ol inositol polyphosphate-5-phosphatase D Homo sapiens