| Name | Ki16425 |
| Description | Ki16425 (Debio 0719) is a competitive, potent, and reversible antagonist to LPA1, LPA2, and LPA3, with Ki values of 0.34 μM, 6.5 μM, and 0.93 μM, respectively. |
| Kinase Assay | High-throughput screening: Screening is conducted at the ICCB-Longwood screening facility. 10 μL of recombinant USP14 protein are dispensed into each well of a 384-well low volume plate in duplicate, using a Wellmate plate dispenser. 33.3?nL of compound from the library are pin-transferred into the wells using a Seiko pin transfer robotic system, followed by pre-incubation for about 30?min. The last two columns of each plate are used for positive and negative controls for the assay. To initiate the enzyme reaction, 10?μL of VS-proteasome plus Ub-AMC mixture are added to each well, using a Wellmate dispenser. Samples are then incubated for another 45?min. Ub-AMC hydrolysis is measured at Ex355/Em460 using an Envision plate reader. The final concentrations of USP14, VS-proteasome and Ub-AMC are 15?nM, 1?nM and 0.8 μM, respectively. The final concentration of test compound is approximately 17?μM. Enzymes and substrates are prepared in Ub-AMC assay buffer (50?mM Tris-HCl (pH?7.5), 1?mM EDTA, 1?mM ATP, 5 mM MgCl2, 1?mM DTT, and 1 mg/Ml ovalbumin). |
| In vitro | Kil6425 preferentially inhibits LPA1- and LPA3-mediated responses but has only a moderate effect on LPA2. Ki16425 inhibits the LPA-induced Ca(2+) response in THP-1 cells, 3T3 fibroblasts, and A431 cells, but had only a marginal effect in PC-12 cells and HL-60 cells, which means that Ki16425 seems to be a useful tool for evaluating the involvement of specific LPA receptors in the short-term response to LPA. Ki16425 inhibits long-term DNA synthesis and cell migration as induced by LPA in Swiss 3T3 fibroblasts. [1] Ki16425 reduces the LPA-induced activation of p42/p44 mitogen activated protein kinase (MAPK), while acting as a weak stimulator of p42/p44 MAPK on its own, properties typical of a protean agonist. Ki16425 also significantly reduces the NGF-induced stimulation of p42/p44 MAPK and inhibited NGF-stimulated neurite outgrowth in PC-12 cells. [2] Ki16425 markedly inhibits the expressions of COX-2 protein induced by synovial fluids. The enhancement of the IL-1 action by LPA on COX-2 expression is also inhibited by Ki16425. [3] |
| In vivo | Ki-16425 (30 mg/kg, i.p.) completely blocks LPA-induced neuropathic pain-like behaviors, when administered 30 min but not 90 min before lysophosphatidic acid injection, suggesting that Ki-16425 is a short-lived inhibitor. Ki-16425 also inhibits nerve injury-induced up-regulation of Caα2δ-1 in the dorsal root ganglion and reduction of SP immunoreactivity in the spinal dorsal horn. [4] |
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice. |
| Solubility Information | DMSO : 94 mg/mL (197.91 mM)
H2O : < 1 mg/mL (insoluble or slightly soluble)
Ethanol : 84 mg/mL (176.9 mM)
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| Keywords | Lysophospholipid Receptor | Inhibitor | LPL Receptor | Debio0719 | Ki-16425 | inhibit | Ki16425 | Debio-0719 | Ki 16425 |
| Inhibitors Related | Radioprotectin-1 | Fingolimod hydrochloride | SLP9101555 | Tyloxapol | ASP-4058 | Ki16198 | CYM50260 | Tetradecyl Phosphonate | Siponimod | Fingolimod | S1PR1 modulator 1 | Ozanimod |
| Related Compound Libraries | Bioactive Compound Library | Membrane Protein-targeted Compound Library | ReFRAME Related Library | Inhibitor Library | NO PAINS Compound Library | Anti-Fibrosis Compound Library | Bioactive Compounds Library Max | Preclinical Compound Library | GPCR Compound Library | Anti-Cancer Active Compound Library |
United States
