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INK 128 (MLN0128)

MTOR(TORC-1/-2) inhibitor,potent and selective CAS# 1224844-38-5

INK 128 (MLN0128)

Catalog No. BCC3880----Order now to get a substantial discount!

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Chemical structure

INK 128 (MLN0128)

3D structure

Chemical Properties of INK 128 (MLN0128)

Cas No. 1224844-38-5 SDF Download SDF
PubChem ID 45375953 Appearance Powder
Formula C15H15N7O M.Wt 309.33
Type of Compound N/A Storage Desiccate at -20°C
Synonyms Sapanisertib; MLN0128
Solubility DMSO : ≥ 83.3 mg/mL (269.29 mM)
*"≥" means soluble, but saturation unknown.
Chemical Name 5-(4-amino-1-propan-2-ylpyrazolo[3,4-d]pyrimidin-3-yl)-1,3-benzoxazol-2-amine
SMILES CC(C)N1C2=C(C(=N1)C3=CC4=C(C=C3)OC(=N4)N)C(=NC=N2)N
Standard InChIKey GYLDXIAOMVERTK-UHFFFAOYSA-N
Standard InChI InChI=1S/C15H15N7O/c1-7(2)22-14-11(13(16)18-6-19-14)12(21-22)8-3-4-10-9(5-8)20-15(17)23-10/h3-7H,1-2H3,(H2,17,20)(H2,16,18,19)
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Biological Activity of INK 128 (MLN0128)

DescriptionINK 128 (MLN0128) is a potent and selective inhibitor of mTOR with an IC50 value of 1 nM.
TargetsmTORPI3KαPI3KγPI3KδPI3Kβ  
IC501 nM (Ki=1.4 nM)219 nM221 nM230 nM5293 nM  

Protocol

Kinase Assay [2]
mTOR activity is assayed using LanthaScreen Kinase kit reagents. PI(3)K α, β, γ and δ activity are assayed using the PI(3)K HTRF assay kit. The concentration of INK128 necessary to achieve inhibition of enzyme activity by 50% (IC50) is calculated using concentrations ranging from 20 μM to 0.1 nM (12-point curve). IC50 values are determined using a nonlinear regression model.

Cell Assay [2]
PC3 cells are treated with the appropriate drug for 48 h, and proliferation is measured using CellTiter-Glo Luminescent reagent. The concentration of INK128 necessary to achieve inhibition of cell growth by 50% (IC50) is calculated using concentrations ranging from 20.0 μM to 0.1 nM (12-point curve).

Animal Administration [2]
Nude mice are inoculated subcutaneously in the right subscapular region with 5×106 MDA-MB-361 cells. After tumours reach a size of 150-200 mm3, mice are randomLy assigned into vehicle control or treatment groups. INK128 is formulated in 5% polyvinylpropyline, 15% NMP, 80% water and administered by oral gavage at 0.3 mg/kg and 1 mg/kg daily.

References:
[1]. Liu A, et al. mTOR Mediated Anti-Cancer Drug Discovery. Drug Discovery Today: Therapeutic Strategies. 2009, 6(2), 47-55. [2]. Hsieh AC, et al. The translational landscape of mTOR signalling steers cancer initiation and metastasis. Nature. 2012 Feb 22;485(7396):55-61.

INK 128 (MLN0128) Dilution Calculator

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Preparing Stock Solutions of INK 128 (MLN0128)

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 3.2328 mL 16.164 mL 32.3279 mL 64.6559 mL 80.8198 mL
5 mM 0.6466 mL 3.2328 mL 6.4656 mL 12.9312 mL 16.164 mL
10 mM 0.3233 mL 1.6164 mL 3.2328 mL 6.4656 mL 8.082 mL
50 mM 0.0647 mL 0.3233 mL 0.6466 mL 1.2931 mL 1.6164 mL
100 mM 0.0323 mL 0.1616 mL 0.3233 mL 0.6466 mL 0.8082 mL
* Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations.

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Background on INK 128 (MLN0128)

INK 128 (MLN0128) is a selective inhibitor of mTOR with IC50 value of 1 nM [3].

mTOR (mammalian target of rapamycin) is an evolutionarily conserved serine/threonine kinase which combined PI3K/AKT/mTOR pathway and plays an important role in regulating many fundamental features of cell growth and division [1].

INK 128 (MLN0128) is a potent mTOR inhibitor. When tested with human pancreatic cancer cells, INK-128 treatment inhibited cell growth and survival via inhibiting mTOR in a time- and concentration- dependent manner [2]. In HER2-positive breast cell lines, INK 128 treatment significantly delayed cell cycle and inhibited cell proliferation through inhibiting mTOR [1].

In a ZR-75-1 breast cancer xenograft model, INK128 treatment in a dose of 0.3mg/Kg/day significantly inhibited tumor growth. When combined with other standard targeted therapy or chemotherapy such as sorafenib, sutent and paclitaxel, enhanced anti-tumor growth activity was observed. INK128 is reported to have excellent physiochemical properties and is currently undergoing preclinical evaluation [3]. When tested with MDA-MB361 mouse model, administration of INK 128 showed a resistance after 20 days, and combined with lapatinib resulted in long-lasting tumor regression [1].

References:
[1].  Garcia-Garcia, C., et al., Dual mTORC1/2 and HER2 blockade results in antitumor activity in preclinical models of breast cancer resistant to anti-HER2 therapy. Clin Cancer Res, 2012. 18(9): p. 2603-12.
[2].  Lou, H.Z., et al., The novel mTORC1/2 dual inhibitor INK-128 suppresses survival and proliferation of primary and transformed human pancreatic cancer cells. Biochem Biophys Res Commun, 2014. 450(2): p. 973-8.
[3].  Jessen K, et al. INK128 is a potent and selective TORC1/2 inhibitor with broad oral anti-tumor activity. AACR 2009 Molecular targets and cancer therapeutics meeting poster; Boston: 2009.

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References on INK 128 (MLN0128)

Dual targeting of mTORC1 and mTORC2 by INK-128 potently inhibits human prostate cancer cell growth in vitro and in vivo.[Pubmed:25990456]

Tumour Biol. 2015 Sep;36(10):8177-84.

Both mammalian target of rapamycin (mTOR) complexes 1 and 2 (mTORC1/2) are often over-activated in prostate cancer cells and are associated with cancer progression. In the current study, we evaluated the potential anti-prostate cancer activity of INK-128, an ATP-competitive mTORC1/2 dual inhibitor, both in vitro and in vivo. Our results showed that INK-128 exerted potent anti-proliferative activity in established (PC-3 and LNCaP lines) and primary (patient-derived) human prostate cancer cells by inducing cell apoptosis. The latter was evidenced by increase of annexin V percentage, formation of cytoplasmic histone-associated DNA fragments, and cleavage of caspase-3. INK-128-induced prostate cancer cell apoptosis and cytotoxicity were alleviated upon pretreatment of cells with the pan-caspase inhibitor z-VAD-FMK or the specific caspase-3 inhibitor z-DVED-FMK. At the molecular level, INK-18 blocked mTORC1/2 activation in PC-3 cells and LNCaP cells and downregulated mTOR-regulated genes including cyclin D1, hypoxia-inducible factor 1alpha (HIF-1alpha), and HIF-2alpha. ERK-MAPK activation and androgen receptor expression were, however, not affected by INK-128 treatment. In vivo, oral administration of INK-128 significantly inhibited growth of PC-3 xenografts in nude mice. The preclinical results of this study suggest that INK-128 could be further investigated as a promising anti-prostate cancer agent.

Dual mTORC1/2 and HER2 blockade results in antitumor activity in preclinical models of breast cancer resistant to anti-HER2 therapy.[Pubmed:22407832]

Clin Cancer Res. 2012 May 1;18(9):2603-12.

PURPOSE: The PI3K/Akt/mTOR pathway is an attractive target in HER2-positive breast cancer that is refractory to anti-HER2 therapy. The hypothesis is that the suppression of this pathway results in sensitization to anti-HER2 agents. However, this combinatorial strategy has not been comprehensively tested in models of trastuzumab and lapatinib resistance. EXPERIMENTAL DESIGN: We analyzed in vitro cell viability and induction of apoptosis in five different cell lines resistant to trastuzumab and lapatinib. Inhibition of HER2/HER3 phosphorylation, PI3K/Akt/mTOR, and extracellular signal-regulated kinase (ERK) signaling pathways was evaluated by Western blotting. Tumor growth inhibition after treatment with lapatinib, INK-128, or the combination of both agents was evaluated in three different animal models: two cell-based xenograft models refractory to both trastuzumab and lapatinib and a xenograft derived from a patient who relapsed on trastuzumab-based therapy. RESULTS: The addition of lapatinib to INK-128 prevented both HER2 and HER3 phosphorylation induced by INK-128, resulting in inhibition of both PI3K/Akt/mTOR and ERK pathways. This dual blockade produced synergistic induction of cell death in five different HER2-positive cell lines resistant to trastuzumab and lapatinib. In vivo, both cell line-based and patient-derived xenografts showed exquisite sensitivity to the antitumor activity of the combination of lapatinib and INK-128, which resulted in durable tumor shrinkage and exhibited no signs of toxicity in these models. CONCLUSIONS: The simultaneous blockade of both PI3K/Akt/mTOR and ERK pathways obtained by combining lapatinib with INK-128 acts synergistically in inducing cell death and tumor regression in breast cancer models refractory to anti-HER2 therapy.

The preclinical evaluation of the dual mTORC1/2 inhibitor INK-128 as a potential anti-colorectal cancer agent.[Pubmed:25692620]

Cancer Biol Ther. 2015;16(1):34-42.

The colorectal cancer is the leading contributor of cancer-related mortality. Mammalian target of rapamycin (mTOR), existing in 2 complexes (mTORC1/2), is frequently dysregulated and constitutively activated in colorectal cancers. It represents an important drug target. Here we found that INK-128, the novel ATP-competitive kinase inhibitor of mTOR, blocked both mTORC1 and mTORC2 activation in colorectal cancer cells (both primary and transformed cells). The immunoprecipitation results showed that the assembly of mTORC1 (mTOR-Raptor association) and mTORC2 (mTOR-Rictor-Sin1 association) was also disrupted by INK-128. INK-128 inhibited colorectal cancer cell growth and survival, and induced both apoptotic and non-apoptotic cancer cell death. Further, INK-128 showed no effect on Erk/MAPK activation, while MEK/Erk inhibition by MEK-162 enhanced INK-128-induced cytotoxicity in colorectal cancer cells. Meanwhile, INK-128 downregulated Fascin1 (FSCN1)/E-Cadherin expressions and inhibited HT-29 cell in vitro migration. In vivo, daily INK-128 oral administration inhibited HT-29 xenograft growth in mice, which was further enhanced by MEK-162 administration. Finally, we found that INK-128 sensitized 5-fluorouracil-(5-FU)-mediated anti-HT-29 activity in vivo and in vitro. Thus, our preclinical studies strongly suggest that INK-128 might be investigated for colorectal cancer treatment in clinical trials.

Dual mTORC1/2 inhibition by INK-128 results in antitumor activity in preclinical models of osteosarcoma.[Pubmed:26514724]

Biochem Biophys Res Commun. 2015 Dec 4-11;468(1-2):255-61.

Existing evidence has shown that mammalian target of rapamycin (mTOR) overactivation is an important contributor of osteosarcoma (OS) progression. Here, we studied the potential anti-OS activity of a potent mTOR kinase inhibitor: INK-128 (MLN0128). We demonstrated that INK-128 induced potent cytotoxic effects against several human OS cell lines (U2OS, MG-63 and SaOs-2), yet same INK-128 treatment was safe (non-cytotoxic) to OB-6 human osteoblastic cells and MLO-Y4 human osteocytic cells. INK-128 induced caspase-dependent apoptosis in OS cells, but not in MLO-Y4/OB-6 cells. The caspase-3 specific inhibitor (z-DVED-fmk) or the pan caspase inhibitor (z-VAD-fmk) dramatically attenuated INK-128-exerted cytotoxicity against OS cells. Molecularly, INK-128 inhibited activation of mTORC1 (S6K1 and S6 phosphorylations) and mTORC2 (AKT Ser-473 phosphorylation), without affecting AKT Thr-308 phosphorylation in U2OS cells. Significantly, AKT inhibition by MK-2206 (an AKT inhibitor), or AKT1/2 stable knockdown by targeted-shRNA, remarkably sensitized INK-128-induced activity in OS cells. In vivo, oral administration of INK-128 potently inhibited U2OS xenograft growth in severe combined immuno-deficient (SCID) mice. mTORC1/2 activation in xenograft tumors was also suppressed with INK-128 administration. In summary, we show that INK-128 exerts potent anti-OS activity in vitro and in vivo. INK-128 might be further investigated as a novel anti-OS agent.

The novel mTORC1/2 dual inhibitor INK-128 suppresses survival and proliferation of primary and transformed human pancreatic cancer cells.[Pubmed:24971544]

Biochem Biophys Res Commun. 2014 Jul 25;450(2):973-8.

Pancreatic cancer has one of worst prognosis among all human malignancies around the world, the development of novel and more efficient anti-cancer agents against this disease is urgent. In the current study, we tested the potential effect of INK-128, a novel mammalian target of rapamycin (mTOR) complex 1 and 2 (mTORC1/2) dual inhibitor, against pancreatic cancer cells in vitro. Our results demonstrated that INK-128 concentration- and time-dependently inhibited the survival and growth of pancreatic cancer cells (both primary cells and transformed cells). INK-128 induced pancreatic cancer cell apoptosis and necrosis simultaneously. Further, INK-128 dramatically inhibited phosphorylation of 4E-binding protein 1 (4E-BP1), ribosomal S6 kinase 1 (S6K1) and Akt at Ser 473 in pancreatic cancer cells. Meanwhile, it downregulated cyclin D1 expression and caused cell cycle arrest. Finally, we found that a low concentration of INK-128 significantly increased the sensitivity of pancreatic cancer cells to gemcitabine. Together, our in vitro results suggest that INK-128 might be further investigated as a novel anti-cancer agent or chemo-adjuvant for pancreatic cancer treatment.

Description

Sapanisertib (INK-128; MLN0128; TAK-228) is an orally available, ATP-dependent mTOR1/2 inhibitor with an IC50 of 1 nM for mTOR kinase.

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