1. MAPK/ERK Pathway
  2. JNK
  3. JNK3 inhibitor-4

JNK3 inhibitor-4 is a potent inhibitor of JNK3 (IC50=1.0 nM) based on 2-aryl-1-pyrimidinyl-1H-imidazole-5-yl acetonitrile. JNK3 inhibitor-4 shows excellent selectivity over other protein kinases including isoforms JNK1 (IC50=143.9 nM) and JNK2 (IC50=298.2 nM). JNK3 inhibitor-4 has neuroprotective effect and predicated blood-brain barrier permeability.

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JNK3 inhibitor-4 Chemical Structure

JNK3 inhibitor-4 Chemical Structure

CAS No. : 2409109-65-3

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Description

JNK3 inhibitor-4 is a potent inhibitor of JNK3 (IC50=1.0 nM) based on 2-aryl-1-pyrimidinyl-1H-imidazole-5-yl acetonitrile. JNK3 inhibitor-4 shows excellent selectivity over other protein kinases including isoforms JNK1 (IC50=143.9 nM) and JNK2 (IC50=298.2 nM)[1]. JNK3 inhibitor-4 has neuroprotective effect and predicated blood-brain barrier permeability[1].

IC50 & Target[1]

JNK3

1.0 nM (IC50)

JNK1

143.9 nM (IC50)

JNK2

298.2 nM (IC50)

In Vitro

JNK3 inhibitor-4 (compound 15d) (1, 5, 10, 20 μM; 24 h and 48 h) inhibits Aβ1-42 induced Aβ1-42-induced cellular toxicity in primary rat cortex neuron[1].
JNK3 inhibitor-4 (10 μM and 20 μM; 24 h and 48 h) inhibits c-jun phosphorylation and APP phosphorylation induced by 10 μM Aβ1-42 or 0.5 μM Anisomycin (HY-18982) in primary rat cortex neuron[1].
JNK3 inhibitor-4 (50 μM; 4 h) shows high permeability in Caco-2 assay and is predicted as BBB permeable (CNS+) based on effective permeability coefficient (Pe) value > 4 in PAMPA assay[1].
JNK3 inhibitor-4 also shows inhibitory potency on GSK3α (h), GSK3β (h), JNK1, 2, MKK6, MOK, SAPK2a (h), SAPK2a (T106 M) (h), SAPK2b (h), MKK4, JNK1α1 (h), and JNK2α1 (h). These shows IC50 values of 5.78, 11.7, 15.1, 1.18, 3.10, 1.19, 0.280, 0.970, 0.860, and 0.340 μM, respectively[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Western Blot Analysis[1]

Cell Line: Primary rat cortex neuron
Concentration: 10 μM and 20 μM
Incubation Time: 24 hours
Result: Monomeric Aβ1-42 induced c-jun phosphorylation dose-dependently and that was inhibited by JNK3 inhibitor-4 in concentration-dependent manner.

Cell Viability Assay[1]

Cell Line: Primary rat cortex neuron
Concentration: 1, 5, 10, 20 μM
Incubation Time: 24 hours and 48 hours
Result: Showed neuroprotective effect and increased cell viability under Aβ1-42 treatment.
In Vivo

JNK3 inhibitor-4 improves memory for the Alzheimer’s disease mouse model. JNK3 inhibitor-4 (compound 15d) (10 or 30 mg/kg; i.v.; 3 times/week for 1 month in 9-month-old APP/PS1 3Tx3Tg mice) results significantly higher spontaneous alteration and response latency of mouse (at 27th or 30th days) compared to the APP/PS1vehicle groups in Y-maze test and passive avoidance test, with a dose correlation[1].
JNK3 inhibitor-4 (30 mg/kg; p.o.; single dose) shows blood-brain barrier permeability with brain to plasma ratio of 0.02 in SD rats[1].
Pharmacokinetics in rats[1]

Route Dose (mg/kg) AUC0-t (ng·h/mL) Cmax (ng/mL) Tmax (h) T1/2 (h) BA (%)
IV 1 718.0 0.22
PO 3 337.5 377.82 0.63 0.34 15.67

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Molecular Weight

477.56

Formula

C28H27N7O

CAS No.
SMILES

N#CCC1=CN=C(N1C2=NC(N[C@H]3CCCN(C3)C(C4CC4)=O)=NC=C2)C5=CC6=C(C=C5)C=CC=C6

Shipping

Room temperature in continental US; may vary elsewhere.

Storage

Please store the product under the recommended conditions in the Certificate of Analysis.

Purity & Documentation
References
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    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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