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

mTOR

Mammalian target of Rapamycin

mTOR

Related Products

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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.

mTOR Isoform Specific Products:

mTOR Isoform Comparison
Cat. No. Product Name Effect Purity Chemical Structure
  • HY-N6983
    Licoricesaponin G2
    		99.87%
    Licoricesaponin G2 is an orally active component found in Licorice. Licoricesaponin G2 significantly ameliorates Bleomycin (HY-108345)-induced pulmonary fibrosis by inhibiting the TNF-α signaling pathway, reducing epithelial-mesenchymal transition, and decreasing extracellular matrix deposition. Licoricesaponin G2 inhibits cancer cells proliferation, migration, inhibits PI3K/AKT/mTOR signaling pathway and increases ROS production. Licoricesaponin G2 can be used for the research of lung cancer and pulmonary fibrosis.
    Licoricesaponin G2
  • HY-10811
    GNE-493
    		Inhibitor 99.81%
    GNE-493 is a potent, selective, and orally available dual pan-PI3-kinase/mTOR inhibitor with IC50s of 3.4 nM, 12 nM, 16 nM, 16 nM and 32 nM for PI3Kα, PI3Kβ, PI3Kδ, PI3Kγ and mTOR.
    GNE-493
  • HY-111508
    PI3K/mTOR Inhibitor-2
    		Inhibitor 99.10%
    PI3K/mTOR Inhibitor-2 is a potent dual pan-PI3K/mTOR inhibitor with IC50s of 3.4/34/16/1 nM for PI3Kα/PI3Kβ/PI3Kδ/PI3Kγ and 4.7 nM for mTOR. Antitumor activity.
    PI3K/mTOR Inhibitor-2
  • HY-19763
    Ifupinostat
    		Inhibitor 99.30%
    Ifupinostat (BEBT-908) is a blood-brain barrier-permeable PI3K/HDAC inhibitor. Ifupinostat exerts anticancer activity against hematologic malignancies, lung cancer, colon cancer, brain cancer and other cancers. Ifupinostat inhibits the PI3K/AKT/mTOR signaling pathway, suppresses c-Myc expression and induces ferroptosis. Ifupinostat can be used in tumor research.
    Ifupinostat
  • HY-N0390S5
    L-Glutamine-1-13C
    		Inhibitor 98.0%
    L-Glutamine-1-13C is the 13C-labeled L-Glutamine (HY-N0390). L-Glutamine is an orally active nutritional agent and cellular metabolism regulator. L-Glutamine is taken up in a Na+-dependent manner and targets multiple key molecules including glutaminase, mTORC1, NF-κB, STAT-3 and HIF-1α. L-Glutamine enhances glutaminolytic catabolism, drives the conversion of glutamate to α-ketoglutarate, thereby regulating gene expression, integrating metabolic signals, mediating glutamine flux and maintaining redox homeostasis. L-Glutamine also promotes cell proliferation, osteogenic differentiation and fracture healing, exerts neuroprotective and cardioprotective effects, and inhibits osteoarthritis. L-Glutamine can be applied to research related to osteoporosis, osteoarthritis, ischemic stroke and acute cantharidin-induced cardiotoxicity.
    L-Glutamine-1-<sup>13</sup>C
  • HY-N6951
    Guaiazulene
    		Inhibitor 99.26%
    Guaiazulene is a bicyclic sesquiterpene. Guaiazulene exhibits various biological activities such as anti-inflammatory, antioxidant, hepatoprotective, antibacterial, and anti-tumor properties. Guaiazulene is also commonly used as a colorant in cosmetics. Guaiazulene shows in vitro cytotoxicity to rat neuronal cells and N2a neuroblastoma cells at high concentrations.
    Guaiazulene
  • HY-N3651
    Curzerenone
    		Inhibitor 98.55%
    Curzerenone is an orally active sesquiterpene compound and Antibacterial agent. Curzerenone can be isolated from Curcuma zedoaria and Curcuma aeruginosa plants. Curzerenone increases ROS levels, activates Apoptotic signaling pathways, and attenuates the PI3K/AKT/mTOR signaling pathway. Curzerenone exhibits anticancer activity against liver cancer and cervical cancer. Curzerenone has antioxidant effects. Curzerenone shows weak antibacterial activity against Escherichia coli. Curzerenone can be used in research related to hepatocellular carcinoma, cervical cancer, and Escherichia coli infection.
    Curzerenone
  • HY-N3677
    Dammarenediol II
    		Inhibitor 99.81%
    Dammarenediol II is a ginsenoside precursor. Dammarenediol II reduces the activity of O-GlcNAc transferase (OGT) and downregulates the global O-GlcNAcylation level. Dammarenediol II inhibits the phosphorylation of Akt, mTOR and GSK3β. Dammarenediol II inhibits human carboxylesterase activity, VEGF-induced ROS production, stress fiber formation and vascular endothelial cadherin disruption. Dammarenediol II promotes cell apoptosis (apoptosis), increases the levels of cleaved PARP1 and p53, and inhibits retinal microvascular leakage. Dammarenediol II can be used in studies related to liver cancer and diabetic retinopathy.
    Dammarenediol II
  • HY-15272
    WAY-600
    		Inhibitor 99.86%
    WAY-600 is a potent, ATP-competitive, and selective mTOR inhibitor with an IC50 of 9 nM for recombinant mTOR enzyme. WAY-600 blocks mTOR complex 1/2 (mTORC1/2) assemble and activation.
    WAY-600
  • HY-112914
    mTOR inhibitor-1
    		Inhibitor 98.82%
    mTOR inhibitor-1 (Compound C-4) is an ATP-Competitive mTOR inhibitor which can suppress cells proliferation and inducing autophagy.
    mTOR inhibitor-1
  • HY-114414
    HDACs/mTOR Inhibitor 1
    		Inhibitor 98.10%
    HDACs/mTOR Inhibitor 1 is a dual HDACs and mTOR inhibitor, with IC50s of 0.19 nM, 1.8 nM, 1.2 nM for HDAC1, HDAC6, mTOR, respectively. HDACs/mTOR Inhibitor 1 stimulates cell cycle arrest in G0/G1 phase and induces tumor cell apoptosis with low toxicity in vivo. HDACs/mTOR Inhibitor 1 can be used in the research of hematologic malignancies.
    HDACs/mTOR Inhibitor 1
  • HY-12034
    WYE-354
    		Inhibitor 98.03%
    WYE-354 is an ATP-competitive mTOR inhibitor with an IC50 of 5 nM. WYE-354 also inhibits PI3Kα and PI3Kγ with IC50s of 1.89 μM and 7.37 μM, respectively. WYE-354 inhibits both mTORC1 and mTORC2. WYE-354 induces autophagy activation in vitro.
    WYE-354
  • HY-139142B
    Simufilam hydrochloride
    		Inhibitor 99.85%
    Simufilam hydrochloride (PTI-125 hydrochloride) is an orally active FLNA modulator. Simufilam hydrochloride restores NMDAR signaling and Arc expression. Simufilam hydrochloride inhibits overactive mTOR signaling by restoring the normal conformation of FLNA, improves insulin sensitivity, reduces Aβ42-induced neuroinflammation and tau protein hyperphosphorylation. Simufilam hydrochloride can be used for research of Alzheimer's disease.
    Simufilam hydrochloride
  • HY-112440
    HZX-02-059
    		Inhibitor 99.40%
    HZX-02-059 is an allosteric inhibitor of PIKFYVE, and a methuosis inducer. HZX-02-059 disrupts the PIKfyve/TFEB axis, suppresses tubulin polymerization, reduces phosphorylated mTOR levels, downregulates p53, PI3K/AKT, c-Myc, and NF-κB pathways. HZX-02-059 induces G2/M cell cycle arrest, apoptosis, and inhibits cancer cell proliferation. HZX-02-059 can be used for the research of lymphoma, double-hit lymphoma, and B-cell acute lymphoblastic leukemia.
    HZX-02-059
  • HY-N0109R
    Salidroside (Standard)
    		Activator
    Salidroside (Standard) is the analytical standard of Salidroside. This product is intended for research and analytical applications. Salidroside (Rhodioloside) is a prolyl endopeptidase inhibitor. Salidroside alleviates cachexia symptoms in mouse models of cancer cachexia via activating mTOR signalling. Salidroside protects dopaminergic neurons by enhancing PINK1/Parkin-mediated mitophagy.
    Salidroside (Standard)
  • HY-11080
    PKI-179
    		Inhibitor 98.0%
    PKI-179 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 also exhibits activity over E545K and H1047R, with IC50s of 14 nM and 11 nM, respectively. PKI-179 shows anti-tumor activity in vivo.
    PKI-179
  • HY-N0008
    Orcinol glucoside
    		Activator 99.40%
    Orcinol glucoside is an orally active, blood-brain barrier permeable osteoblast proliferation promoter that targets the Nrf2/Keap1, mTOR and p38 signaling pathways. Orcinol glucoside promotes Nrf2 nuclear translocation, upregulates antioxidant enzyme levels, enhances the phosphorylation of mTOR and p70S6K, and inhibits the enzymatic activity of HAS2 as well as the nuclear translocation of GR. Orcinol glucoside also alleviates oxidative stress, inhibits autophagic flux, osteoclastogenesis and TGF-β1-induced M2 polarization, while reducing collagen deposition and effectively promoting the proliferation, differentiation and mineralization of osteoblasts. Orcinol glucoside also exhibits anti-pulmonary fibrosis, anxiolytic and antidepressant activities. Orcinol glucoside can be used in the research of senile and glucocorticoid-induced osteoporosis, idiopathic pulmonary fibrosis (IPF), anxiety and other related diseases.
    Orcinol glucoside
  • HY-N0914
    Ajugol
    		Inhibitor 99.80%
    Ajugol is an orally active iridoid glycoside found in the traditional Chinese medicine Leonurus japonicus. Ajugol is an autophagy activator. Ajugol activates TFEB-mediated autophagy and lysosomal biogenesis. Ajugol also has anti-inflammatory effects. Ajugol has great potential in the research of asthma, non-alcoholic fatty liver disease (NAFLD), and osteoarthritis.
    Ajugol
  • HY-100026
    PQR620
    		Inhibitor 98.01%
    PQR620 is an orally bioavailable and selective brain penetrant inhibitor of mTORC1/2.
    PQR620
  • HY-136660
    PQR626
    		Inhibitor 99.96%
    PQR626, a rapamycin derivative, is a potent, selective, orally active, and brain-penetrant mTOR inhibitor, with an IC50 and Ki of 5 nM and 3.6 nM, respectively. PQR626 can be can be used for the research of neurological disorders.
    PQR626
Cat. No. Product Name / Synonyms Application Reactivity
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Download mTOR Signaling Pathway Map.

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.

mTOR Isoform Comparison

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