Lanraplenib (GS-SYK)

製品コードS9715 バッチS971501

印刷

化学情報

Chemical Structure Synonyms GS-9876 Storage
(From the date of receipt)		 3 years -20°C powder
化学式

C23H25N9O
分子量 443.50 CAS No. 1800046-95-0
Solubility (25°C)* 体外 DMSO 89 mg/mL (200.67 mM)
Water Insoluble
Ethanol Insoluble
* <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.

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生物活性

製品説明 Lanraplenib (GS-SYK) is a potent, highly selective and orally active inhibitor of Spleen Tyrosine Kinase (SYK) with IC50 of 9.5 nM. Lanraplenib inhibits SYK activity in platelets via the glycoprotein VI (GPVI) receptor without prolonging bleeding time (BT) in monkeys or humans.
in vitro

GS-9876 inhibits anti-IgM stimulated phosphorylation of AKT, BLNK, BTK, ERK, MEK, and PKCδ in human B cells with EC50 values of 24–51 nM. Functionally, GS-9876 inhibits anti-IgM mediated CD69 and CD86 expression on B-cells (EC50=112±10 nM and 164±15 nM, respectively) and anti-IgM /anti-CD40 co-stimulated B cell proliferation (EC50=108±55 nM). In human macrophages, GS-9876 inhibits IC-stimulated TNFα and IL-1β release (EC50=121±77 nM and 9±17 nM, respectively). Anti-CD3/anti-CD28 stimulated T cell proliferation is weakly inhibited (EC50=1291±398 nM), with selectivity >10-fold versus the inhibition of B cell proliferation. In human blood, GS-9876 blocks SYK phosphorylation, CD69 expression on B cells, and CD63 expression in basophils.[1] GS-9876 inhibits glycoprotein VI (GPVI)-induced phosphorylation of linker for activation of T cells and phospholipase Cγ2, platelet activation and aggregation in human whole blood, and platelet binding to collagen under arterial flow.[2]
in vivo

GS-9876 demonstrates a dose-dependent improvement in clinical score and histopathology parameters with once-daily dosing in short and long term rat models of collagen-induced arthritis (CIA). Significant efficacy can be achieved with GS-9876 doses that produces trough pSYK inhibition of <50%.[1] Ex vivo, GPVI-stimulated platelet aggregation is inhibited in GS-9876-treated monkeys without a concomitant increase in bleeding time (BT). Similarly, orally administered GS-9876 does not increase BT in humans.[2]

プロトコル(参考用のみ)

細胞アッセイ 細胞株 Human blood platelets
濃度 0.01 μM to 100 μM
反応時間 15 min
実験の流れ

Blood is preincubated for 15 min with Lanraplenib (GS-9876) and activated with ADP (0.2 μM) or convulxin (30 ng/mL) for 2 min at room temperature. Samples are stained for CD61 and CD62P, fixed, and analyzed on a FACSCanto II flow cytometer. The percentages of CD62P+ platelets are quantified and the values are subjected to nonlinear regression analysis using Prism 6 to generate EC50 values.
動物実験 動物モデル female cynomolgus monkeys
投薬量 5 mg/kg, 15 mg/kg, 45 mg/kg
投与方法 Oral gavage

長期の保管のために-20°Cの下で製品を保ってください。

人間や獣医の診断であるか治療的な使用のためにでない。

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