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| 活性类型 | 活性值-log(M) | 作用机制 | 期刊 | 参考文献(PubMed IDs) |
|---|
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在色谱分析、有机合成和交叉偶联反应领域已被 0 篇同行评审文献引用。
Information
Pacritinib (SB1518) is a potent and selective inhibitor ofJanus Kinase 2 (JAK2)andFms-Like Tyrosine Kinase-3 (FLT3)withIC50sof 23 and 22 nM in cell-free assays, respectively. Phase 3.
Targets
FLT3 (D835Y) (Cell-free assay); JAK2 (V617F) (Cell-free assay); FLT3 (Cell-free assay); JAK2 (Cell-free assay); TYK2 (Cell-free assay) 14593,
In vitro
Pacritinib is a potent inhibitor of both wild-type JAK2 and JAK2V617F mutant (IC50= 19 nM) that is present in high frequencies among patients with MPD. Relative to JAK2, Pacritinib is two-fold less potent against TYK2 (IC50= 50 nM), 23-fold less potent against JAK3 (IC50= 520 nM) and 56-fold less potent against JAK1 (IC50= 1280 nM). Pacritinib effectively permeates cells to modulate signaling pathways downstream of JAK2, whether agonist activated or mutationally activated. Pacritinib induces apoptosis, cell cycle arrest and antiproliferative effects in JAK2WT- and JAK2V617F-dependent cells. Pacritinib inhibits cell proliferation of Karpas 1106P and Ba/F3-JAK2V617F with IC50 of 348 and 160 nM, respectively. Pacritinib inhibits endogenous colony growth derived from erythroid and myeloid progenitors with IC50 of 63 and 53 nM , respectively. SB1518 also inhibits FLT3 and its mutant FLT3-D835Y(IC50= 6 nM ). Pacritinib inhibits FLT3 phosphorylation and downstream STAT, MAPK and PI3K signaling in FLT3-internal-tandem duplication (ITD), FLT3-wt cells and primary AML blast cells. Pacritinib treatment leads to a dose-dependent decrease of pFLT3, pSTAT5, pERK1/2 and pAkt in FLT3-ITD harboring MV4-11 cells with IC50 of 80, 40, 33 and 29 nM , respectively. Treatment of the primary AML blast cells with Pacritinib for 3 h leads to a dose-dependent decrease of pFLT3, pSTAT3 and pSTAT5 with an IC50 below 0.5 μM. Pacritinib induces apoptosis, cell cycle arrest and anti-proliferative effects in FLT3-mutant and FLT3-wt cells. Pacritinib inhibits cell proliferation of FLT3-ITD-harboring cells MV4-11 and primary AML blast cells with IC50s of 47 nM and 0.19-1.3 μM, respectively.
In vivo
Pacritinib administrated at 150 mg/kg p.o. q.d. to JAK2V617F-dependent xenograft model, significantly ameliorates splenomegaly and hepatomegaly symptoms, with 60% normalization of spleen weight and 92% normalization of liver weight and is well tolerated without significant weight loss or any hematological toxicities, including thrombocytopenia and anemia. Pacritinib induces dose-dependent inhibition of tumor growth of JAK2V617F-dependent SET-2 xenograft model (40% for 75 mg/kg and 61% for 150 mg/kg). Pacritinib is efficacious in FLT3-ITD-bearing MV4-11 xenograft models. Pacritinib treated once daily for 21 consecutive days, induces dose-dependent inhibition of tumor growth (38% for 25 mg/kg, 92% for 50 mg/kg and 121% for 100 mg/kg). Complete regression is observed in 3/10 and 8/8 mice for the 50 and 100 mg/kg/day groups, respectively.
Cell Research(from reference)
Cell lines:Karpas 1106P cells
Concentrations:~10 μM
Incubation Time:2 days
分类树(Taxonomy Tree)
| 界(kingdom) | 有机化合物 |
|---|---|
| 超类(Superclass) | 苯类化合物 |
| 类(Class) | 酚醚 |
| 亚类(Subclass) | 暂无 |
| 中间层级节点(Intermediate Tree Nodes) | 暂无 |
| 直接上位类(Direct Parent) | 酚醚 |
| 其他上位类(Alternative Parents) | 烷基芳基醚 嘧啶和嘧啶衍生物 N-烷基吡咯烷 杂芳族化合物 三烷基胺 氧环化合物 二烷基醚 氮杂环化合物 碳氢化合物衍生物 |
| 分子骨架(Molecular Framework) | 芳香族杂多环化合物 |
| 取代基(Substituents) | 芳基醚 - 氨基酸 - 芳香族杂多环化合物 - 氮杂环 - 二烷基醚 - 乙醚 - 杂芳香族化合物 - 烃衍生物 - N-烷基吡咯烷 - 有机硝基化合物 - 有机氧化合物 - 有机杂环化合物 - 有机氮化合物 - 有机氧化合物 - 氧杂环 - 苯酚醚 - 嘧啶 - 吡咯烷 - 三元脂肪胺 - 三芳基胺 |
| 描述(Description) | 该化合物属于酚醚类有机化合物。这类芳香化合物含有以苯环取代的醚基团。 |
| 外部描述符(External Descriptors) | 暂无 |
| IC50 | JAK3, IC50: 520 nM |
|---|---|
| ALogP | 4.547 |
| HBD Count | 1 |
| Rotatable Bond | 4 |