In Vivo (Add solvents to the product individually and in order.)
Homogeneous suspension
CMC-NA
≥5mg/ml
Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
* <1 mg/ml means slightly soluble or insoluble. * Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations. * Room temperature shipping (Stability testing shows this product can be shipped without any cooling measures.)
Preparing Stock Solutions
Biological Activity
Description
WHI-P97 is a potent inhibitor of JAK-3 with an estimated Ki value of 0.09 μM in modelling studies and a measured IC50 value of 2.5 μM in EGFR kinase inhibition assays.
Targets
JAK3
In vitro
Treatment of mast cells with WHI-P97 inhibited the translocation of 5-lipoxygenase (5-LO) from the nucleoplasm to the nuclear membrane and consequently 5-LO-dependent leukotriene (LT) synthesis after IgE receptor/FcεRI crosslinking by >90% at low micromolar concentrations. This compound does not directly inhibit the enzymatic activity of 5-LO, but prevented its translocation to the nuclear membrane without affecting the requisite calcium signal.
In Vivo
WHI-P97 was very well tolerated in mice, with no signs of toxicity at dose levels ranging from 5 μg/kg to 50 mg/kg, and LD10 was not reached at a 50 mg/kg dose level when administered as a single i.p. or i.v. bolus dose. Therapeutic concentrations of this compound, which inhibit mast cell leukotriene synthesis in vitro, could easily be achieved in vivo after the i.v. or i.p. administration of a single nontoxic 40 mg/kg bolus dose. It showed promising biological activity in a mouse model of allergic asthma at nontoxic dose levels. Treatment of ovalbumin-sensitized mice with this chemical prevented the development of airway hyper-responsiveness to methacholine in a dose-dependent fashion. It inhibited the eosinophil recruitment to the airway lumen after the ovalbumin challenge in a dose-dependent fashion. This compound had an elimination half-life (t1/2) of 58.9 min and systemic clearance (CL) of 891 ml/h/kg in CD-1 mice and a t1/2 of 84.2 min and CL of 1513 ml/h/kg in BALB/c mice. The values for AUC and Cmax were 107.3 μM·h and 296.7 μM, respectively, in CD-1 mice, and 58.4 μM·h and 212.7 μM, respectively, in BALB/c mice. The large volume of distribution [322 ml/kg in CD-1 mice and 415 ml/kg in BALB/c mice; ∼6-fold greater than the plasma volume (50 ml/kg)] suggests that it may be extensively partitioned into extravascular compartments.
RBL-2H3 cells were cultured overnight on 22- × 22-mm coverslips at a cell density of 0.01 × 106/ml with 0.24 mg/ml DNP-IgE. Sensitized RBL-2H3 cells were then treated with 30 μM WHI-P97, this compound, or vehicle before challenge with 20 ng/ml DNP-BSA at 37°C. After stimulation with DNP-BSA, the cells were fixed in cold methanol for 30 min, permeabilized in cold acetone, and blocked with 1% BSA containing nonimmune goat serum. Staining of mast cells with primary and secondary antibodies followed by confocal laser scanning microscopy.
RETURN POLICY
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SHIPPING AND STORAGE
Selleck products are transported at room temperature. If you receive the product at room temperature, please rest assured, the Selleck Quality Inspection Department has conducted experiments to verify that the normal temperature placement of one month will not affect the biological activity of powder products. After collecting, please store the product according to the requirements described in the datasheet. Most Selleck products are stable under the recommended conditions.
NOT FOR HUMAN, VETERINARY DIAGNOSTIC OR THERAPEUTIC USE.
