KU-0063794

Catalog No.S1226

KU-0063794 Chemical Structure

Molecular Weight(MW): 465.54

KU-0063794 is a potent and highly specific dual-mTOR inhibitor of mTORC1 and mTORC2 with IC50 of ~10 nM in cell-free assays; no effect on PI3Ks.

Size Price Stock Quantity  
In DMSO USD 180 In stock
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USD 170 In stock
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Cited by 41 Publications

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Biological Activity

Description KU-0063794 is a potent and highly specific dual-mTOR inhibitor of mTORC1 and mTORC2 with IC50 of ~10 nM in cell-free assays; no effect on PI3Ks.
Targets
mTORC1 [1]
(Cell-free assay)
mTORC2 [1]
(Cell-free assay)
~10 nM ~10 nM
In vitro

Compared with the mTOR inhibitor PP242, KU-0063794 exhibits higher specificity for mTOR, as being inactive against PI3Ks or 76 other kinases. In HEK-293 cells, KU-0063794 at 30 nM is sufficient to rapidly ablate S6K1 activity by blocking the phosphorylation of the hydrophobic motif (Thr389) and subsequently the phosphorylation of the T-loop residue (Thr229). In case of IGF1 stimulation of serum-starved HEK-293 cells, 300 nM of KU-0063794 is needed to inhibit the S6K1 activity by ~90%. KU-0063794 at 100-300 nM also completely inhibits the amino-acid-induced phosphorylation of S6K1 and S6 protein. Similar to S6K1, KU-0063794 inhibits the phosphorylation of mTORC1 at Ser2448 and mTORC2 at Ser2481 in a dose-dependent and time-dependent manner. In the presence of serum or following IGF1 stimulation, KU-0063794 induces a dose-dependent inhibition of the activity and phosphorylation of Akt at Ser473 and unexpected Thr308 as well as the phosphorylation of the Akt substrates PRAS40 at Thr246, GSK3α/GSK3β at Ser21/Ser9 and Foxo-1/3a at Thr24/Thr32. KU-0063794 but not rapamycin inhibits SGK1 activity and Ser422 phosphorylation as well as its physiological substrate NDGR1 in a dose-dependent manner, to the same extent as S6K1 and Akt phosphorylation, whereas KU-0063794 dose not inhibit phorbol ester induced ERK or RSK phosphorylation and RSK activation. Compared with rapamycin, KU-0063794 exhibits more significant potency to induce the complete dephosphorylation of 4E-BP1 at Thr37, Thr46 and Ser65. KU-0063794 inhibits cell growth of both wild-type and mLST8-deficient MEFs and induces a G1 cell cycle arrest, more significantly than rapamycin. [1]

Cell Data
Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID
HepG2  MX3D[YxtKF[rYXLpcIl1gSCDc4PhfS=> MXqwMlHjiJN3MNMg{txO NVHMellnPzJiaB?= MXTk[YNz\WG|ZYOgZ4VtdCC4aXHibYxqfHliaX6gZUBld3OnIHTldIVv\GWwdDDtZY5v\XJ? M4TxVlI3Ojd6OEG5
HepG2  NXvHdGFvS2:ub375JGZwem2jdHnvckBCe3OjeR?= NYPLfpZ1OeLCk{WwxsDPxE1? M3LJR|ExKGR? M{PMWoRm[3KnYYPld{B1cGViboXtZoVzKG:oII\pZYJt\SCKZYDHNkBkd2yxbnnld:Khe2mpbnnmbYNidnSueR?= MUOyOlI4QDhzOR?=
HepG2  MU\BdI9xfG:|aYOgRZN{[Xl? NFX2OGYxNjIkgKO1NOKh|ryP NIDROIs1QCCq NYSxeWFIcW6mdXPld{BieG:ydH;zbZMhcW5iYTDkc5NmKGSncHXu[IVvfCCvYX7u[ZI> NGH0XmozPjJ5OEixPS=>
HepG2  M1vzOGZ2dmO2aX;uJGF{e2G7 MVy1M|ExKM7:TR?= NVTKbIcxOjRiaB?= Mnqy[JJidWG2aXPhcIx6KGmwaHnibZR{KHCqb4PwbI9zgWyjdHnvckBw\iCDS2SgZZQhW2W{LUS3Ny=> MVqyOlI4QDhzOR?=
HepG2  NGXifFhHfW6ldHnvckBCe3OjeR?= NYfvNol3PS9zMDFOwG0> MlzFNlQhcA>? MkO2[I94dnKnZ4XsZZRmeyC2aHWgcIV3\Wy|IFjJSlHPuSCjbnSgZ5lkdGmwIFSxxsA> MUmyOlI4QDhzOR?=
HepG2  MnW5SpVv[3Srb36gRZN{[Xl? NWHONIplOC5z4pETOVDDqM7:TR?= Mlq3NlQhcA>? NV21fGhncW6mdXPld{BxPjJiZH;3cpJm\3WuYYTpc44tKEKnY3zpck0yKGW6cILld5Nqd25iYX7kJGxEO0JvSTD0c{BNSzOELVnJJINwdn[ncoPpc44hcW5iYTDkc5NmKGSncHXu[IVvfCCvYX7u[ZI> NETtV3YzPjJ5OEixPS=>
HepG3  NVrteYM3TnWwY4Tpc44hSXO|YYm= MWSwMlHjiJN3MNMg{txO MWW0PEBp NWSycphJcW6mdXPld{Bk\WyuIHH1eI9xcGGpeTDpckBiKGSxc3Wg[IVx\W6mZX70JI1idm6nch?= MnuxNlYzPzh6MUm=
AGS M2nNZ2dzd3e2aDDJcohq[mm2aX;uJGF{e2G7 NE\MUYpKSzVyPUG1MlAhyrFiMj65NUDPxE1? MUSyOFU6PzR5OB?=
HGC27 M3\ydmdzd3e2aDDJcohq[mm2aX;uJGF{e2G7 NHXYeGZKSzVyPUG1MlAhyrFiND64NkDPxE1? M17WXlI1PTl5NEe4
MKN45 MVHHdo94fGhiSX7obYJqfGmxbjDBd5NigQ>? MXHJR|UxRTBwOEKgxtEhOC5yMTFOwG0> MVmyOFU6PzR5OB?=
NUGC4 NHrxN5FIem:5dHigTY5pcWKrdHnvckBCe3OjeR?= M{L6d2lEPTB;Mj65N{DDuSByLkOxJO69VQ>? MXmyOFU6PzR5OB?=
PC9 MWHHdo94fGhiSX7obYJqfGmxbjDBd5NigQ>? Mkj5O|IhcA>? NGjxTWVKSzVyPUGwMlE2yrFyLk[yJI5O MkDzNlM5PzR6OEC=
PC9GR Mm\0S5Jwf3SqIFnubIljcXSrb36gRZN{[Xl? MVS3NkBp MojRTWM2OD14LkKxxtEyNjNyIH7N MlXCNlM5PzR6OEC=
H1650 NEXO[5VIem:5dHigTY5pcWKrdHnvckBCe3OjeR?= M1nWPVczKGh? Mn3GTWM2OD15Lk[xxtExNjZ{IH7N M2DMWVI{QDd2OEiw
H1975 M2SzS2dzd3e2aDDJcohq[mm2aX;uJGF{e2G7 MXe3NkBp MlewTWM2OD1zMT6xOeKyOC57MzDuUS=> MnvWNlM5PzR6OEC=
PC9 MVLGeY5kfGmxbjDBd5NigQ>? NXy3SItJOTBwMUWgcm0> NE\5NnM4OiCq NGXlNXVqdmirYnn0d{BuXE:UIIDoc5NxcG:{eXzheIlwdiC|dHH0eZPDqA>? NYCydY9rOjN6N{S4PFA>
PC9GR MWLGeY5kfGmxbjDBd5NigQ>? MlHNOk4zOSCwTR?= MUO3NkBp M2O2folvcGmkaYTzJI1VV1JicHjvd5Bpd3K7bHH0bY9vKHO2YYT1d:Kh M3;JWVI{QDd2OEiw
H1650 NFLvfoVHfW6ldHnvckBCe3OjeR?= M1LkTFcvPjFibl2= Mn\0O|IhcA>? MY\pcohq[mm2czDtWG9TKHCqb4PwbI9zgWyjdHnvckB{fGG2dYRCpC=> MWCyN|g4PDh6MB?=
H1975 MkDLSpVv[3Srb36gRZN{[Xl? MX2xNU4yPSCwTR?= MnrvO|IhcA>? NGTZV|hqdmirYnn0d{BuXE:UIIDoc5NxcG:{eXzheIlwdiC|dHH0eZPDqA>? Mn3INlM5PzR6OEC=
PC9 NW\tdnM4TnWwY4Tpc44hSXO|YYm= M4DvXFExNjF3IH7N NFjsUFY4OiCq NUTjdGQ{cW6qaXLpeJMheGixc4Doc5J6dGG2aX;uJI9nKHB5MGO2Ty=> MUeyN|g4PDh6MB?=
PC9GR MoS5SpVv[3Srb36gRZN{[Xl? NXToZ|lxPi5{MTDuUS=> M1rZeVczKGh? NWmybJd[cW6qaXLpeJMheGixc4Doc5J6dGG2aX;uJI9nKHB5MGO2Ty=> MVeyN|g4PDh6MB?=
H1650 MmW5SpVv[3Srb36gRZN{[Xl? M3j0XFcvPjFibl2= MlPKO|IhcA>? NGHP[|JqdmirYnn0d{BxcG:|cHjvdplt[XSrb36gc4YheDdyU{\L MVuyN|g4PDh6MB?=
H1975 NX72[GE2TnWwY4Tpc44hSXO|YYm= MlvWNVEvOTVibl2= M1XXWlczKGh? NV7nTI1WcW6qaXLpeJMheGixc4Doc5J6dGG2aX;uJI9nKHB5MGO2Ty=> M17tcFI{QDd2OEiw
LNCaP NXHPSFZjS2WubDDWbYFjcWyrdImgRZN{[Xl? M1XmfVAuOTBizszN NV:4[3BPOjRiaNMg NX3RcWZY\GWlcnXhd4V{KGOnbHygeoli[mmuaYT5JIlvKGFiZH;z[UBl\XCnbnTlcpQhdWGwbnXy NGTPNXQzOzh2ME[wOS=>
PC-3 M1HOeWNmdGxiVnnhZoltcXS7IFHzd4F6 NXyyXW1XOC1zMDFOwG0> M4jnXFI1KGkEoB?= Mkf0[IVkemWjc3XzJINmdGxidnnhZoltcXS7IHnuJIEh\G:|ZTDk[ZBmdmSnboSgcYFvdmW{ NV3weoh{OjN6NEC2NFU>
MDA-MB-468  MkSxR4VtdCCYaXHibYxqfHliQYPzZZk> NGjRd3kxNTFyIN88US=> MVmyOEBpyqB? NXf0dHlQ\GWlcnXhd4V{KGOnbHygeoli[mmuaYT5JIlvKGFiZH;z[UBl\XCnbnTlcpQhdWGwbnXy NF71N|EzOzh2ME[wOS=>
LNCaP NXTxWG05TnWwY4Tpc44hSXO|YYm= NFq2VYozODEkgKO4NFAhdk1? MWiyOEBpyqB? NH\ZVY5l\WO{ZXHz[ZMhfGinIIDoc5NxcG:{eXzheIlwdiCuZY\lcEBw\iCyN{DTOmshcW5iYTDkc5NmKGSncHXu[IVvfCCvYX7u[ZI> M3;pU|I{QDRyNkC1
PC-3 MYDGeY5kfGmxbjDBd5NigQ>? MmTLNlAx6oDVOECwJI5O NHrYbGszPCCqwrC= MlTQ[IVkemWjc3XzJJRp\SCyaH;zdIhwenmuYYTpc44hdGW4ZXygc4YheDdyU{\LJIlvKGFiZH;z[UBl\XCnbnTlcpQhdWGwbnXy M1zJUVI{QDRyNkC1
MDA-MB-468  MWLGeY5kfGmxbjDBd5NigQ>? NXjZc2FYOjBy4pETPFAxKG6P NEftR4EzPCCqwrC= MnLP[IVkemWjc3XzJJRp\SCyaH;zdIhwenmuYYTpc44hdGW4ZXygc4YheDdyU{\LJIlvKGFiZH;z[UBl\XCnbnTlcpQhdWGwbnXy NGjweG8zOzh2ME[wOS=>
Caki-1  M{\DNGZ2dmO2aX;uJGF{e2G7 MlHINVAxNTJyMECgcm0> MoTmNVAuOThyIH3pci=> MV;EUXNQ MYPpcohq[mm2czDic5RpKG2WT2LDNUBidmRibWTPVmMzKGG|IHnu[Ilk[XSnZDDifUB1cGViZHXjdoVie2ViaX6gdIhwe3Cqb4L5cIF1cW:wIH;mJIRwf26|dILlZY0h\W[oZXP0c5J{ M2TnRlI{OzR7OUi5
786-O MYPGeY5kfGmxbjDBd5NigQ>? MmC4NVAxNTJyMECgcm0> MmT0NVAuOThyIH3pci=> MXnEUXNQ M37ySYlvcGmkaYTzJIJwfGhibWTPVmMyKGGwZDDtWG9TSzJiYYOgbY5lcWOjdHXkJIJ6KHSqZTDk[YNz\WG|ZTDpckBxcG:|cHjvdplt[XSrb36gc4Yh\G:5boP0doVidSCnZn\lZ5RwenN? NH\uZXQzOzN2OUm4PS=>
Caki-1  NV[z[I1sS2WubDDWbYFjcWyrdImgRZN{[Xl? MVGzNFAuPDByMDDuUS=> MofINlQuQTZiaB?= MYLEUXNQ NIXUbpp{fXCycnXzd4V{KHSqZTDj[YxtKH[rYXLpcIl1gSCrbjDic5RpKHSrbXWgZY5lKGSxc3Wg[IVx\W6mZX70JI1idm6nch?= NYPNNlR4OjN|NEm5PFk>
786-O M1X5NWNmdGxiVnnhZoltcXS7IFHzd4F6 M{LRc|MxOC12MECwJI5O M1qzUlI1NTl4IHi= MXPEUXNQ MWrzeZBxemW|c3XzJJRp\SClZXzsJJZq[WKrbHn0fUBqdiCkb4ToJJRqdWViYX7kJIRwe2ViZHXw[Y5l\W62IH3hco5meg>? NFrxdHEzOzN2OUm4PS=>
Caki-1  MVjGeY5kfGmxbjDBd5NigQ>? NWXR[GNoOiEEtV2= MkTzO|IhcA>? NXP3b|NtTE2VTx?= M1qydYlv\HWlZYOgS|Eh[2WubDDjfYNt\SCjcoLld5Qh[W6mIHH1eI9xcGGpeR?= Mn3yNlM{PDl7OEm=
786-O NIjXbFBHfW6ldHnvckBCe3OjeR?= M{HO[VIhyrWP NW[yc|ZKPzJiaB?= M{DkZ2ROW09? NX;I[nVQcW6mdXPld{BIOSClZXzsJIN6[2ynIHHydoV{fCCjbnSgZZV1d3CqYXf5 Mn\LNlM{PDl7OEm=

... Click to View More Cell Line Experimental Data

Assay
Methods Test Index PMID
Western blot
p-S6K / S6K / p-4E-BP1 / E7 / E6 / p53 ; 

PubMed: 28115701     


Normoxic HPV-positive cancer cells were treated for 24 h with 0.5, 1.0, or 5 μM KU-0063794 (KU) or 50 nM rapamycin. Shown are immunoblots of P-S6K, S6K, P-4E-BP1, 4E-BP1, HPV16/18 E6/E7, and p53 protein levels. DMSO served as a solvent control; β-actin, as a loading control.

p-mTOR; 

PubMed: 24262658     


Inhibition of mTOR pathway by mTOR kinase inhibitors. MCC-2 cells were treated with WYE354 (3 μM), PP242 (2.5 μM), and Ku-0063794 (5 μM) for 24h, respectively. Lysates were prepared and subjected to immunoblotting analysis with indicated antibodies. 

28115701 24262658
In vivo Ku0063794 inhibits tumor growth and mTOR signaling in a preclinical renal cell carcinoma model. However, Ku0063794 was not more effective than temsirolimus in the animal study. A possible explanation for lack of greater activity in vivo for Ku0063794 is that temsirolimus has important effects on the tumor microenvironment. Temsirolimus decreased angiogenesis in the xenograft tumors while Ku0063794 did not. Temsirolimus treated tumors expressed less VEGF and PDGF than Ku0063794 treated tumors, thus stimulating less angiogenesis[2].

Protocol

Kinase Assay:

[1]

- Collapse

mTOR complexes kinase assays:

HEK-293 cells are freshly lysed in Hepes lysis buffer. Lysate (1-4 mg) is pre-cleared by incubating with 5-20 μL of Protein G-Sepharose conjugated to pre-immune IgG. The lysate extracts are then incubated with 5-20 μL of Protein G-Sepharose conjugated to 5-20 μg of either anti-Rictor or anti-Raptor antibody, or pre-immune IgG. All antibodies are covalently conjugated to Protein G-Sepharose. Immunoprecipitations are carried out for 1 hour at 4 °C on a vibrating platform. The immunoprecipitates are washed four times with Hepes lysis buffer, followed by two washes with Hepes kinase buffer. For Raptor immunoprecipitates used for phosphorylating S6K1, for the initial two wash steps the buffer includes 0.5 M NaCl to ensure optimal kinase activity. GST-Akt1 is isolated from serum-deprived HEK-293 cells incubated with PI-103 (1 μM for 1 hour). GST-S6K1 is purified from serum-deprived HEK-293 cells incubated with rapamycin (0.1 μM for 1 hour). mTOR reactions are initiated by adding 0.1 mM ATP and 10 mM MgCl2 in the presence of various concentrations of KU-0063794 and GST-Akt1 (0.5 μg) or GST-S6K1 (0.5 μg). Reaction are carried out for 30 minutes at 30 °C on a vibrating platform and stopped by addition of SDS sample buffer. Reaction mixtures are then filtered through a 0.22-μm-poresize Spin-X filter and samples are subjected to electrophoresis and immunoblot analysis with the indicated antibodies.
Cell Research:

[1]

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  • Cell lines: Wild-type and mLST8 deficient MEFs
  • Concentrations: Dissolved in DMSO, final concentration ~3 μM
  • Incubation Time: 24, 48, and 72 hours
  • Method:

    Cells are treated with KU-0063794 for 24, 48, and 72 hours, and the medium is changed every 24 hours with freshly dissolved KU-0063794. For the measurement of cell growth, cells are washed once with PBS, and fixed in 4% (v/v) paraformaldehyde in PBS for 15 minutes. After washing once with water, the cells are stained with 0.1% Crystal Violet in 10% ethanol for 20 minutes and washed three times with water. Crystal Violet is extracted from cells with 0.5 mL of 10% (v/v) ethanoic (acetic) acid for 20 minutes. The eluate is then diluted 1:10 in water and absorbance at 590 nm is quantified. For the assessment of cell cycle distribution, cells are harvested by trypsinization, washed once in PBS, and re-suspended in ice-cold aq. 70% (v/v) ethanol. Cells are washed twice in PBS plus 1% (w/v) BSA and stained for 20 minutes in PBS plus 0.1% (v/v) Triton X-100 containing 50 g/mL propidium iodide and 50 g/mL RNase A. The DNA content of cells is determined using a FACSCalibur flow cytometer and CellQuest software. Red fluorescence (585 nm) is acquired on a linear scale, and pulse width analysis is used to exclude doublets. Cell-cycle distribution is determined using FlowJo software.


    (Only for Reference)
Animal Research:

[2]

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  • Animal Models: Nu/Nu nude mice
  • Formulation: one part DMSO and then diluted (200 µg/100 µl) with 4 parts PEG1500 (50% (w/v) in 75 mM Hepes, pH 8.0
  • Dosages: 8 mg/kg
  • Administration: i.p.
    (Only for Reference)

Solubility (25°C)

In vitro DMSO 16 mg/mL (34.36 mM)
Water Insoluble
Ethanol Insoluble
In vivo Add solvents to the product individually and in order(Data is from Selleck tests instead of citations):
30% PEG400+0.5% Tween80+5% propylene glycol
For best results, use promptly after mixing.
30 mg/mL

* 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.

Chemical Information

Molecular Weight 465.54
Formula

C25H31N5O4

CAS No. 938440-64-3
Storage powder
in solvent
Synonyms N/A

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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID