Acalisib (GS-9820) inhibits the activity of PI3K, thereby preventing the production of the second messenger phosphatidylinositol-3,4,5-trisphosphate (PIP3), which decreases tumor cell proliferation and induces cell death. Wortmannin, LY294002, GDC0941, IC87114 and Acalisib induced a dramatic retraction of osteoclasts within 15-20 min to 65-75% of the initial area. In contrast, there was no significant retraction in response to vehicle, PIK75, TGX221 or AS252424. Moreover, wortmannin and Acalisib (GS-9820), but not PIK75 or TGX221, disrupted actin belts. Whereas PIK75, TGX221, and Acalisib had no significant effect on basal survival, all blocked RANKL-stimulated survival. PI3K-mediated signaling is often dysregulated in cancer cells; the targeted inhibition of PI3K is designed to preserve PI3K signaling in normal, non-neoplastic cells.
|Body Surface Area (m2)||0.007||0.025||0.15||0.05||0.02||0.5|
|Animal A (mg/kg) = Animal B (mg/kg) multiplied by||Animal B Km|
|Animal A Km|
For example, to modify the dose of resveratrol used for a mouse (22.4 mg/kg) to a dose based on the BSA for a rat, multiply 22.4 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for resveratrol of 11.2 mg/kg.
Effects of isoform-selective phosphatidylinositol 3-kinase inhibitors on osteoclasts: actions on cytoskeletal organization, survival, and resorption.
Shugg RP, et al. J Biol Chem. 2013 Dec 6;288(49):35346-57. PMID: 24133210.
|Related PI3K Products|
IPI-3063 is a potent and selective p110δ inhibitor with biochemical IC50 of 2.5 ± 1.2 nM and IC50 values for the other class I PI3K isoforms (p110α, p110β, p110γ) are at least 400-fold higher.
GDC-0084 is a brain penetrant inhibitor of PI3K and mTOR.
GNE-317 is a potent, brain-penetrant PI3K inhibitor.
Serabelisib (INK-1117,MLN-1117,TAK-117) is a potent and selective oral PI3Kα isoform inhibitor (IC50 of 21 nmol/L against PI3Kα) that has demonstrated > 100-fold selectivity relative to other class I PI3K family members (PI3Kβ/γ/δ) and mTOR, and a high degree of selectivity against many other kinase.
SF2523 is a highly selective and potent inhibitor of PI3K with IC50 values of 34 nM, 158 nM, 9 nM, 241 nM and 280 nM for PI3Kα, PI3Kγ, DNA-PK, BRD4 and mTOR, respectively.
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