PQ 401 - CAS 196868-63-0
Catalog number: 196868-63-0
Category: Inhibitor
Please be kindly noted products are not for therapeutic use. We do not sell to patients.
Molecular Formula:
C18H16ClN3O2
Molecular Weight:
341.79
COA:
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Targets:
IGF-1R
Description:
PQ 401 is an IGF-1R inhibitor and inhibits autophosphorylation of the IGF-IR kinase domain at concentrations <100 nM, with an IC50 <1μM.
Purity:
>98%
MSDS:
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InChIKey:
YBLWOZUPHDKFOT-UHFFFAOYSA-N
InChI:
InChI=1S/C18H16ClN3O2/c1-11-9-15(13-5-3-4-6-14(13)20-11)21-18(23)22-16-10-12(19)7-8-17(16)24-2/h3-10H,1-2H3,(H2,20,21,22,23)
Canonical SMILES:
CC1=NC2=CC=CC=C2C(=C1)NC(=O)NC3=C(C=CC(=C3)Cl)OC
1.Bone marrow cell-induced protection of the human myocardium: characterization and mechanism of action.
Lai VK;Linares-Palomino J;Nadal-Ginard B;Galiñanes M J Thorac Cardiovasc Surg. 2009 Dec;138(6):1400-08.e1. doi: 10.1016/j.jtcvs.2009.07.013. Epub 2009 Aug 18.
OBJECTIVES: ;The mechanism of the putative beneficial effect of myocardial transplantation of bone marrow cells remains unclear. We studied the protective properties of bone marrow cells on the human myocardium and investigated the underlying mechanism.;METHODS: ;Bone marrow cells and the right atrial appendage were obtained from patients undergoing elective cardiac surgery. Myocardial slices were subjected to 90 minutes of simulated ischemia/120 minutes of reoxygenation at 37 degrees C following various protocols. Tissue injury was assessed by creatine kinase released into the media during the reoxygenation period, and myocardial necrosis and apoptosis were determined by propidium iodide and terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (percent of aerobic control).;RESULTS: ;Autologous unfractionated bone marrow cells significantly reduced myocardial injury. Maximal protection was obtained with 5 x 10(6) autologous cells (approximately 1.5 x 10(5) cells/mg wet myocardium) that caused a reduction in creatine kinase release and cell death by necrosis and apoptosis of 70% to 80%. Allogenic bone marrow cells were as protective as the autologous cells and their effect was unaffected by prior frozen storage or culturing.
2.PfIRR Interacts with HrIGF-I and Activates the MAP-kinase and PI3-kinase Signaling Pathways to Regulate Glycogen Metabolism in Pinctada fucata.
Shi Y;He MX Sci Rep. 2016 Feb 25;6:22063. doi: 10.1038/srep22063.
The insulin-induced mitogen-activated protein kinase (MAPK) and phosphatidylinositol 3-kinase (PI3K) pathways are major intracellular signaling modules and conserved among eukaryotes that are known to regulate diverse cellular processes. However, they have not been investigated in the mollusk species Pinctada fucata. Here, we demonstrate that insulin-related peptide receptor of P. fucata (pfIRR) interacts with human recombinant insulin-like growth factor I (hrIGF-I), and stimulates the MAPK and PI3K signaling pathways in P. fucata oocytes. We also show that inhibition of pfIRR by the inhibitor PQ401 significantly attenuates the basal and hrIGF-I-induced phosphorylation of MAPK and PI3K/Akt at amino acid residues threonine 308 and serine 473. Furthermore, our experiments show that there is cross-talk between the MAPK and PI3K/Akt pathways, in which MAPK kinase positively regulates the PI3K pathway, and PI3K positively regulates the MAPK cascade. Intramuscular injection of hrIGF-I stimulates the PI3K and MAPK pathways to increase the expression of pfirr, protein phosphatase 1, glucokinase, and the phosphorylation of glycogen synthase, decreases the mRNA expression of glycogen synthase kinase-3 beta, decreases glucose levels in hemocytes, and increases glycogen levels in digestive glands.
3.Insulin-like growth factor-1 receptor-mediated inhibition of A-type K(+) current induces sensory neuronal hyperexcitability through the phosphatidylinositol 3-kinase and extracellular signal-regulated kinase 1/2 pathways, independently of Akt.
Wang H;Qin J;Gong S;Feng B;Zhang Y;Tao J Endocrinology. 2014 Jan;155(1):168-79. doi: 10.1210/en.2013-1559. Epub 2013 Dec 20.
Although IGF-1 has been implicated in mediating hypersensitivity to pain, the underlying mechanisms remain unclear. We identified a novel functional of the IGF-1 receptor (IGF-1R) in regulating A-type K(+) currents (IA) as well as membrane excitability in small trigeminal ganglion neurons. Our results showed that IGF-1 reversibly decreased IA, whereas the sustained delayed rectifier K(+) current was unaffected. This IGF-1-induced IA decrease was associated with a hyperpolarizing shift in the voltage dependence of inactivation and was blocked by the IGF-1R antagonist PQ-401; an insulin receptor tyrosine kinase inhibitor had no such effect. An small interfering RNA targeting the IGF-1R, or pretreatment of neurons with specific phosphatidylinositol 3-kinase (PI3K) inhibitors abolished the IGF-1-induced IA decrease. Surprisingly, IGF-1-induced effects on IA were not regulated by Akt, a common downstream target of PI3K. The MAPK/ERK kinase inhibitor U0126, but not its inactive analog U0124, as well as the c-Raf-specific inhibitor GW5074, blocked the IGF-1-induced IA response. Analysis of phospho-ERK (p-ERK) showed that IGF-1 significantly activated ERK1/2 whereas p-JNK and p-p38 were unaffected.
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CAS 196868-63-0 PQ 401

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