1. Signaling Pathways
  2. PI3K/Akt/mTOR
  3. mTOR

mTOR

Mammalian target of Rapamycin

mTOR (mammalian target of Rapamycin) is a protein that in humans is encoded by the mTOR gene. mTOR is a serine/threonine protein kinase that regulates cell growth, cell proliferation, cell motility, cell survival, protein synthesis, and transcription. mTOR belongs to the phosphatidylinositol 3-kinase-related kinase protein family. mTOR integrates the input from upstream pathways, including growth factors and amino acids. mTOR also senses cellular nutrient, oxygen, and energy levels. The mTOR pathway is dysregulated in human diseases, such as diabetes, obesity, depression, and certain cancers. Rapamycin inhibits mTOR by associating with its intracellular receptor FKBP12. The FKBP12-rapamycin complex binds directly to the FKBP12-Rapamycin Binding (FRB) domain of mTOR, inhibiting its activity.

Cat. No. Product Name Effect Purity Chemical Structure
  • HY-15271
    WYE-687
    Inhibitor 98.05%
    WYE-687 is an ATP-competitive mTOR inhibitor with an IC50 of 7 nM. WYE-687 concurrently inhibits activation of mTORC1 and mTORC2. WYE-687 also inhibits PI3Kα and PI3Kγ with IC50s of 81 nM and 3.11 μM, respectively.
    WYE-687
  • HY-Y0252R
    L-Proline (Standard)
    Activator
    L-Proline (Standard) is the analytical standard of L-Proline. This product is intended for research and analytical applications. L-Proline is one of the twenty amino acids used in living organisms as the building blocks of proteins.
    L-Proline (Standard)
  • HY-101776A
    Desmethyl-VS-5584 hydrochloride
    Inhibitor 98.63%
    Desmethyl-VS-5584 hydrochloride is a dimethyl analog of VS-5584, a potent and selective mTOR/< with a pyridine[2,3-d]pyrimidine structure. b>PI3KDual inhibitor.
    Desmethyl-VS-5584 hydrochloride
  • HY-10219GL
    Rapamycin (GMP Like)
    Inhibitor 98.8%
    Rapamycin (Sirolimus) GMP Like is Rapamycin (HY-10219) produced by using GMP like guidelines. GMP Like small molecules works appropriately as an auxiliary reagent for cell therapy manufacture. Rapamycin is a potent and specific mTOR inhibitor.
    Rapamycin (GMP Like)
  • HY-137315
    TML-6
    Inhibitor 99.01%
    TML-6, an orally active curcumin derivative, inhibits the synthesis of the β-amyloid precursor protein and β-amyloid (Aβ). TML-6 can upregulate Apo E, suppress NF-κB and mTOR, and increase the activity of the anti-oxidative Nrf2 gene. TML-6 has the potential for Alzheimer’s disease (AD) research.
    TML-6
  • HY-11080A
    PKI-179 hydrochloride
    Inhibitor 99.66%
    PKI-179 hydrochloride is a potent and orally active dual PI3K/mTOR inhibitor, with IC50s of 8 nM, 24 nM, 74 nM, 77 nM, and 0.42 nM for PI3K-α, PI3K-β, PI3K-γ, PI3K-δ and mTOR, respectively. PKI-179 hydrochloride also exhibits activity over E545K and H1047R, with IC50s of 14 nM and 11 nM, respectively. PKI-179 hydrochloride shows anti-tumor activity in vivo.
    PKI-179 hydrochloride
  • HY-141805
    MHY-1685
    Inhibitor 99.84%
    MHY-1685, a novel mammalian target of rapamycin (mTOR) inhibitor, provides opportunities to improve hCSC-based myocardial regeneration.
    MHY-1685
  • HY-145931
    CC214-2
    Inhibitor 98.41%
    CC214-2 is an oral active and selective mTOR kinase inhibitor. CC214-2 targets to both of mTORC1 (pS6) and mTORC2 (pAktS473). CC214-2 induces autophagy, which is a potential target for host-directed therapy (HDT) in tuberculosis. CC214-2 exhibits synergistic bactericidal and sterilizing activity agasinst tuberculosis (TB), and shortens the treatment duration. CC214-2 also inhibits Rapamycin (HY-10219)-resistant signaling and the growth of glioblastomas in vitro and in vivo.
    CC214-2
  • HY-143510
    RMC-4627
    99.20%
    RMC-4627 is a selective mTORC1 inhibitor that activates 4EBP1 and inhibits tumor growth.
    RMC-4627
  • HY-125927
    8-Aminoadenosine
    Inhibitor 99.94%
    8-Aminoadenosine (8-NH2-Ado), a RNA-directed nucleoside analogue, reduces cellular ATP levels and inhibits mRNA synthesis. 8-Aminoadenosine blocks Akt/mTOR signaling and induces autophagy and apoptosis in a p53-independent manner. 8-Aminoadenosine has antitumor activity.
    8-Aminoadenosine
  • HY-W348485
    WRX606
    Inhibitor
    WRX606 is an inhibitor for mTOR complex 1 (mTORC1). WRX606 inhibits the phosphorylation of mTORC1 substrate S6 kinase 1 S6K1 (IC50=10 nM), and the phosphorylation of the eukaryotic translation initiation factor 4E binding protein (p-4E-BP1) (IC50=0.27 μM) in MCF-7. WRX606 exhibits cytotoxicity to HepG2 with IC50 of 17 nM. WRX606 exhibits antitumor efficacy in mouse models.
    WRX606
  • HY-N9942
    Physalin A
    Inhibitor 99.22%
    Physalin A is a biologically active withanolide. Physalin A shows anti-inflammatory, antifibrotic and ameliorative effects on autophagy in models of disc degeneration. Physalin A has antitumor activity and can induce apoptosis, ROS production and G2/M phase cell cycle arrest. Besides. Physalin A can significantly increase the activity of quinone reductase and increase the expression of detoxifying enzymesc.
    Physalin A
  • HY-10812
    GNE-490
    Inhibitor
    GNE-490, a (thienopyrimidin-2-yl)aminopyrimidine, is a potent pan-PI3K inhibitor with IC50s of 3.5 nM, 25 nM, 5.2 nM, 15 nM for  PI3Kα, PI3Kβ, PI3Kδ and PI3Kγ, respectively. GNE-490 has >200 fold selectivity for mTOR (IC50=750 nM). GNE-490 shows potent suppression efficacy profile against MCF7.1 breast cancer xenograft model.
    GNE-490
  • HY-134903
    (32-Carbonyl)-RMC-5552
    Inhibitor
    (32-Carbonyl)-RMC-5552 is a potent mTOR inhibitor. (32-Carbonyl)-RMC-5552 inhibits mTORC1 and mTORC2 substrate (p-P70S6K-(T389), p-4E-BP1-(T37/36), AND p-AKT1/2/3-(S473)) phosphorylation with pIC50s of > 9, >9 and between 8 and 9, respectively (patent WO2019212990A1, example 2).
    (32-Carbonyl)-RMC-5552
  • HY-124036
    DS-7423
    Inhibitor 99.75%
    DS-7423 is a dual PI3K and mTOR inhibitor, with IC50 values of 15.6 nM, 34.9 nM for PI3Kα and mTOR, respectively. DS-7423 possesses anti-tumor activity.
    DS-7423
  • HY-N2590
    Lupenone
    99.74%
    Lupenone is an orally active lupine-type triterpenoid that can be isolated from Musa basjoo. Lupenone Lupenone plays a role through the PI3K/Akt/mTOR and NF-κB signaling pathways. Lupenone has anti-inflammatory, antiviral, antidiabetic and anticancer activities.
    Lupenone
  • HY-153120A
    PI3K/mTOR Inhibitor-13 sodium
    Inhibitor 98.13%
    PI3K/mTOR Inhibitor-13 sodium is an orally active dual inhibitor of phosphoinositol 3-kinase (PI3K) and mTOR kinase. PI3K/mTOR Inhibitor-13 sodium has potential applications in sexual diseases, solid tumor and idiopathic pulmonary fibrosis (IPF).
    PI3K/mTOR Inhibitor-13 sodium
  • HY-114267
    Cbz-B3A
    Inhibitor ≥98.0%
    Cbz-B3A is a potent and selective inhibitor of mTORC1 signaling that appear to bind to ubiquilins 1, 2, and 4, and Cbz-B3A inhibits the phosphorylation of eIF4E-binding protein 1 (4EBP1).
    Cbz-B3A
  • HY-B1787
    Sulindac sulfone
    Inhibitor 98.10%
    Sulindac sulfone is an mTORC1 pathway inhibitor and a metabolite of Sulindac. Sulindac sulfone inhibits colon cancer cell growth and induces cell cycle arrest. Sulindac sulfone is used in cancer research.
    Sulindac sulfone
  • HY-17471AR
    Metformin (hydrochloride) (Standard)
    Inhibitor 99.97%
    Metformin hydrochloride (Standard) is the analytical standard of Metformin (hydrochloride). This product is intended for research and analytical applications. Metformin (1,1-Dimethylbiguanide) hydrochloride inhibits the mitochondrial respiratory chain in the liver, leading to AMPK activation and enhancing insulin sensitivity, and can be used in the study of type 2 diabetes. Metformin hydrochloride also inhibits liver oxidative stress, nitrosative stress, inflammation, and apoptosis caused by liver ischemia/reperfusion injury. In addition, metformin hydrochloride regulates the expression of autophagy-related proteins by activating AMPK and inhibiting the mTOR signaling pathway, thereby inducing tumor cell autophagy and inhibiting the growth of renal cell carcinoma in vitro and in vivo.
    Metformin (hydrochloride) (Standard)
Cat. No. Product Name / Synonyms Application Reactivity

The mammalian target of rapamycin (mTOR) signaling pathway integrates both intracellular and extracellular signals and serves as a central regulator of cell metabolism, growth, proliferation and survival[1]. mTOR is the catalytic subunit of two distinct complexes called mTORC1 and mTORC2. mTORC1 comprises DEPTOR, PRAS40, RAPTOR, mLST8, mTOR, whereas mTORC2 comprises DEPTOR, mLST8, PROTOR, RICTOR, mSIN1, mTOR[2]. Rapamycin binds to FKBP12 and inhibits mTORC1 by disrupting the interaction between mTOR and RAPTOR. mTORC1 negatively regulates autophagy through multiple inputs, including inhibitory phosphorylation of ULK1 and TFEB. mTORC1 promotes protein synthesis through activation of the translation initiation promoter S6K and through inhibition of the inhibitory mRNA cap binding 4E-BP1, and regulates glycolysis through HIF-1α. It promotes de novo lipid synthesis through the SREBP transcription factors. mTORC2 inhibits FOXO1,3 through SGK and Akt, which can lead to increased longevity. The complex also regulates actin cytoskeleton assembly through PKC and Rho kinase[3]

 

Growth factors: Growth factors can signal to mTORC1 through both PI3K-Akt and Ras-Raf-MEK-ERK axis. For example, ERK and RSK phosphorylate TSC2, and inhibit it.

 

Insulin Receptor: The activated insulin receptor recruits intracellular adaptor protein IRS1. Phosphorylation of these proteins on tyrosine residues by the insulin receptor initiates the recruitment and activation of PI3K. PIP3 acts as a second messenger which promotes the phosphorylation of Akt and triggers the Akt-dependent multisite phosphorylation of TSC2. TSC is a heterotrimeric complex comprised of TSC1, TSC2, and TBC1D7, and functions as a GTPase activating protein (GAP) for the small GTPase Rheb, which directly binds and activates mTORC1. mTORC2 primarily functions as an effector of insulin/PI3K signaling. 

 

Wnt: The Wnt pathway activates mTORC1. Glycogen synthase kinase 3β (GSK-3β) acts as a negative regulator of mTORC1 by phosphorylating TSC2. mTORC2 is activated by Wnt in a manner dependent on the small GTPase RAC1[4].

 

Amino acids: mTORC1 senses both lysosomal and cytosolic amino acids through distinct mechanisms. Amino acids induce the movement of mTORC1 to lysosomal membranes, where the Rag proteins reside. A complex named Ragulator, interact with the Rag GTPases, recruits them to lysosomes through a mechanism dependent on the lysosomal v-ATPase, and is essential for mTORC1 activation. In turn, lysosomal recruitment enables mTORC1 to interact with GTP-bound RHEB, the end point of growth factor. Cytosolic leucine and arginine signal to mTORC1 through a distinct pathway comprised of the GATOR1 and GATOR2 complexes.    

 

Stresses: mTORC1 responds to intracellular and environmental stresses that are incompatible with growth such as low ATP levels, hypoxia, or DNA damage. A reduction in cellular energy charge, for example during glucose deprivation, activates the stress responsive metabolic regulator AMPK, which inhibits mTORC1 both indirectly, through phosphorylation and activation of TSC2, as well as directly through the phosphorylation of RAPTOR. Sestrin1/2 are two transcriptional targets of p53 that are implicated in the DNA damage response, and they potently activate AMPK, thus mediating the p53-dependent suppression of mTOR activity upon DNA damage. During hypoxia, mitochondrial respiration is impaired, leading to low ATP levels and activation of AMPK. Hypoxia also affects mTORC1 in AMPK-independent ways by inducing the expression of REDD1, the protein products of which then suppress mTORC1 by promoting the assembly of TSC1-TSC2[2].

 

Reference:

[1]. Laplante M, et al.mTOR signaling at a glance.J Cell Sci. 2009 Oct 15;122(Pt 20):3589-94. 
[2]. Zoncu R, et al. mTOR: from growth signal integration to cancer, diabetes and ageing.Nat Rev Mol Cell Biol. 2011 Jan;12(1):21-35. 
[3]. Johnson SC, et al. mTOR is a key modulator of ageing and age-related disease.Nature. 2013 Jan 17;493(7432):338-45.
[4]. Shimobayashi M, et al. Making new contacts: the mTOR network in metabolism and signalling crosstalk.Nat Rev Mol Cell Biol. 2014 Mar;15(3):155-62.

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