VPS34-IN1 - CAS 1383716-33-3
Catalog number: B0084-470848
Category: Inhibitor
Not Intended for Therapeutic Use. For research use only.
Molecular Formula:
C21H24ClN7O
Molecular Weight:
425.91
COA:
Inquire
Targets:
PI3K
Description:
VPS34-IN1 is a potent and selective Vps34 inhibitor with potential anticancer activity. VPS34-IN1 inhibits Vps34 with 25 nM IC50 in vitro.
Ordering Information
Catalog Number Size Price Stock Quantity
B0084-470848 20 mg $199 In stock
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Purity:
98%
Appearance:
White to off-white Solid powder
Synonyms:
VPS34IN1; VPS34 IN1; VPS34-IN1.
Solubility:
Soluble in DMSO, not in water
Storage:
Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).
MSDS:
Inquire
Shelf Life:
2 years if stored properly
Canonical SMILES:
OC(C)(C)CNC(N=C1CC2CC2)=NC=C1C3=CC=NC(NC4=CC=NC(Cl)=C4)=N3
1.A dual role for the class III PI3K, Vps34, in platelet production and thrombus growth.
Valet C;Levade M;Chicanne G;Bilanges B;Cabou C;Viaud J;Gratacap MP;Gaits-Iacovoni F;Vanhaesebroeck B;Payrastre B;Severin S Blood. 2017 Nov 2;130(18):2032-2042. doi: 10.1182/blood-2017-04-781641. Epub 2017 Sep 13.
To uncover the role of Vps34, the sole class III phosphoinositide 3-kinase (PI3K), in megakaryocytes (MKs) and platelets, we created a mouse model with Vps34 deletion in the MK/platelet lineage (;Pf4;-Cre/Vps34;lox/lox;). Deletion of Vps34 in MKs led to the loss of its regulator protein, Vps15, and was associated with microthrombocytopenia and platelet granule abnormalities. Although Vps34 deficiency did not affect MK polyploidisation or proplatelet formation, it dampened MK granule biogenesis and directional migration toward an SDF1α gradient, leading to ectopic platelet release within the bone marrow. In MKs, the level of phosphatidylinositol 3-monophosphate (PI3P) was significantly reduced by Vps34 deletion, resulting in endocytic/trafficking defects. In platelets, the basal level of PI3P was only slightly affected by Vps34 loss, whereas the stimulation-dependent pool of PI3P was significantly decreased. Accordingly, a significant increase in the specific activity of Vps34 lipid kinase was observed after acute platelet stimulation. Similar to Vps34-deficient platelets, ex vivo treatment of wild-type mouse or human platelets with the Vps34-specific inhibitors, SAR405 and VPS34-IN1, induced abnormal secretion and affected thrombus growth at arterial shear rate, indicating a role for Vps34 kinase activity in platelet activation, independent from its role in MKs.
2.Characterization of VPS34-IN1, a selective inhibitor of Vps34, reveals that the phosphatidylinositol 3-phosphate-binding SGK3 protein kinase is a downstream target of class III phosphoinositide 3-kinase.
Bago R;Malik N;Munson MJ;Prescott AR;Davies P;Sommer E;Shpiro N;Ward R;Cross D;Ganley IG;Alessi DR Biochem J. 2014 Nov 1;463(3):413-27. doi: 10.1042/BJ20140889.
The Vps34 (vacuolar protein sorting 34) class III PI3K (phosphoinositide 3-kinase) phosphorylates PtdIns (phosphatidylinositol) at endosomal membranes to generate PtdIns(3)P that regulates membrane trafficking processes via its ability to recruit a subset of proteins possessing PtdIns(3)P-binding PX (phox homology) and FYVE domains. In the present study, we describe a highly selective and potent inhibitor of Vps34, termed VPS34-IN1, that inhibits Vps34 with 25 nM IC50 in vitro, but does not significantly inhibit the activity of 340 protein kinases or 25 lipid kinases tested that include all isoforms of class I as well as class II PI3Ks. Administration of VPS34-IN1 to cells induces a rapid dose-dependent dispersal of a specific PtdIns(3)P-binding probe from endosome membranes, within 1 min, without affecting the ability of class I PI3K to regulate Akt. Moreover, we explored whether SGK3 (serum- and glucocorticoid-regulated kinase-3), the only protein kinase known to interact specifically with PtdIns(3)P via its N-terminal PX domain, might be controlled by Vps34. Mutations disrupting PtdIns(3)P binding ablated SGK3 kinase activity by suppressing phosphorylation of the T-loop [PDK1 (phosphoinositide-dependent kinase 1) site] and hydrophobic motif (mammalian target of rapamycin site) residues.
3.Cinderella finds her shoe: the first Vps34 inhibitor uncovers a new PI3K-AGC protein kinase connection.
Bilanges B;Vanhaesebroeck B Biochem J. 2014 Dec 1;464(2):e7-10. doi: 10.1042/BJ20141218.
Class II/III PI3Ks (phosphoinositide 3-kinases) produce the PtdIns(3)P lipid that is involved in intracellular vesicular trafficking. In contrast with class I PI3Ks, the potential signalling roles of class II/III PI3Ks are poorly understood. In a recent article in the Biochemical Journal, Bago and co-workers report that Vps34 (vacuolar protein sorting 34), the only class III PI3K, controls the activity of SGK3 (serum- and glucocorticoid-regulated protein kinase 3). Like other AGC kinases, the SGKs (SGK1, SGK2 and SGK3) are activated by dual phosphorylation. Unlike its cousins SGK1 and SGK2, SGK3 contains a PtdIns(3)P-binding domain, providing an additional element of regulation. The study by Bago et al. characterizes and makes extensive use of a Novartis Vps34 inhibitor (VPS34-IN1) that inhibits this PI3K isoform with nanomolar potency, without affecting other lipid kinases or more than 300 protein kinases. The authors show that this compound very rapidly reduced PtdIns(3)P levels at the endosome with concomitant loss of SGK3 phosphorylation. Co-inhibition of class I PI3Ks led to a further reduction in SGK3 activity, indicating that class I PI3Ks may also regulate SGK3 activity through an additional, currently unknown, mechanism.
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