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-N2217R
    Rotundic acid (Standard)
    Inhibitor
    Rotundic acid (Standard) is the analytical standard of Rotundic acid. This product is intended for research and analytical applications. Rotundic acid, a triterpenoid obtained from Ilex rotunda Thunb., induces DNA damage and cell apoptosis in hepatocellular carcinoma through AKT/mTOR and MAPK Pathways. Rotundic acid possesses anti-inflammatory and cardio-protective abilities.
    Rotundic acid (Standard)
  • HY-N10754
    Aschantin
    Inhibitor
    Aschantin, a bisepoxylignan, can be isolated from Magnolia biondii. Aschantin has antiplasmodial, Ca2+-antagonistic, platelet activating factor-antagonistic, and chemopreventive activities. Aschantin is a mTOR kinase inhibitor. Aschantin is also an inhibitor of Cytochrome P450 and UGT enzyme.
    Aschantin
  • HY-155376
    mTOR inhibitor-14
    Inhibitor
    mTOR inhibitor-14 (compound 14c) is a potent mTOR inhibitor. mTOR inhibitor-14 also shows minimal CYP2C8 inhibition. mTOR inhibitor-14 can inhibit tumor growth.
    mTOR inhibitor-14
  • HY-17654
    BIEGi-1
    Inhibitor
    BIEGi-1 is an EGFR inhibitor. BIEGi-1 effectively disrupts the EGFR-Rheb interaction in cells. BIEGi-1 robustly inhibits EGFR kinase activity (reduces p-Y1068-EGFR) as well as mTORC1 activation (reduces p-T389-S6K1) in EGFR-mutant cells. BIEGi-1 shows strong antiproliferative effects on EGFR-mutant PC9 and HCC827 cells with IC50 values of 17 nM and 20 nM, respectively. BIEGi-1 can be used for the study of cancers harboring EGFR mutations, such as non-small cell lung cancer (NSCLC).
    BIEGi-1
  • HY-173141
    mTOR inhibitor-26
    Inhibitor
    mTOR inhibitor-26 (Compound HPT-11) is an inhibitor of mTOR with an IC50 of 0.7 nM. It effectively inhibits the proliferation of AML cell lines Molm-13 and MV-4-11. mTOR inhibitor-26 exhibits antitumor activity and favorable metabolic stability, making it a promising candidate for cancer research.
    mTOR inhibitor-26
  • HY-13610
    N1,N11-Diethylnorspermine
    Inhibitor
    N1,N11-Diethylnorspermine is a synthetic analog of the naturally occurring polyamine spermine, can induce polyamine depletion and inhibit tumor cell growth. N1,N11-Diethylnorspermine activates polyamine catabolism and downregulates mTOR protein. N1,N11-Diethylnorspermine induces the release of cytochrome c from mitochondria, resulting in activation of caspase 3. N1,N11-Diethylnorspermine tetrahydrochloride kills glioblastoma multiforme (GBM) through induction of SSAT (spermidine/spermine N1-acetyltransferase) coupled with H2O2 production.
    N1,N11-Diethylnorspermine
  • HY-137315S
    TML-6-d3
    TML-6-d3 is the deuterium labeled TML-6. 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-
    TML-6-d<sub>3</sub>
  • HY-B0168BS
    Levomilnacipran-d5 hydrochloride
    Activator
    Levomilnacipran-d5 ((1S,2R)-Milnacipran-d5) hydrochloride is deuterium labeled Levomilnacipran hydrochloride (HY-B0168B). Levomilnacipran ((1S,2R)-Milnacipran) hydrochloride is the enantiomer of Milnacipran (HY-B0168) and a strong substrate of P-gp that can cross the blood-brain barrier. Levomilnacipran hydrochloride is a serotonin and norepinephrine reuptake inhibitor, with IC50 values of 10.5 nM and 19.0 nM, and Ki values of 92.2 nM and 1.2 nM for human norepinephrine transporter (NET) and serotonin transporter (SERT), respectively. Levomilnacipran hydrochloride has antidepressant and anxiolytic activities. Levomilnacipran hydrochloride can be used for the research of depression.
    Levomilnacipran-d<sub>5</sub> hydrochloride
  • HY-15269
    PP30
    Inhibitor
    PP30, a TORKinib, is a potent, selective, and ATP-competitive inhibitor of mTOR with an IC50 of 80 nM.
    PP30
  • HY-147966
    HDAC-IN-43
    Inhibitor
    HDAC-IN-43 is a potent HDAC 1/3/6 inhibitor with IC50 values of 82, 45, and 24 nM, respectively. HDAC-IN-43 is a weak PI3K/mTOR inhibitors with IC50 values of 3.6 and 3.7 μM, respectively. HDAC-IN-43 shows broad anti-proliferative activity .
    HDAC-IN-43
  • HY-163511
    PI3K/Akt/mTOR-IN-4
    Inhibitor
    PI3K/Akt/mTOR-IN-4 (compound 4r) is a potent PI3K/Akt/mTOR and tubulin polymerization inhibitor. PI3K/Akt/mTOR-IN-4 induce apoptosis and cell cycle arrest at G2/M phase. PI3K/Akt/mTOR-IN-4 decreases the expression of p-PI3K, p-Akt, and p-mTOR, β-tubulin.
    PI3K/Akt/mTOR-IN-4
  • HY-N0404R
    Sinigrin (Standard)
    Inhibitor
    Sinigrin (Standard) (Allyl-glucosinolate (Standard)) is the analytical standard of Sinigrin (HY-N0404). This product is intended for research and analytical applications. Sinigrin (Allyl-glucosinolate) is an orally active glucosinolate found in cruciferous plants. Sinigrin possesses multiple activities such as anti-cancer, antibacterial, antifungal, anti-inflammatory, antioxidant, and inhibition of fat synthesis. Sinigrin can be used in the research of tumors, inflammatory, and metabolic diseases.
    Sinigrin (Standard)
  • HY-152238
    PI3K/mTOR Inhibitor-12
    Inhibitor
    PI3K/mTOR Inhibitor-12 is a potent, orally active and selective PI3K/mTOR inhibitor with IC50 values of 0.06 nM and 3.12 nM for PI3Kα and mTOR, respectively. PI3K/mTOR Inhibitor-12 has antitumor activity. PI3K/mTOR Inhibitor-12 has lower liver toxicity.
    PI3K/mTOR Inhibitor-12
  • HY-150061
    NVP-BBD130
    Inhibitor
    NVP-BBD130 is a potent, stable, ATP-competitive and orally active dual PI3K and mTOR inhibitor. NVP-BBD130 is a click chemistry reagent, it contains an Alkyne group and can undergo copper-catalyzed azide-alkyne cycloaddition (CuAAc) with molecules containing Azide groups.
    NVP-BBD130
  • HY-172259
    Toyaburgine
    Inhibitor
    Toyaburgine is a unique isoquinoline compound that exhibits anti-tumor activity. It packs a punch by disrupting the PI3K/AKT/mTOR signaling pathway, causing significant morphological changes and cell death in MIA PaCa-2 cells. On top of that, it puts the brakes on cell migration and colony formation. This compound is showing a lot of promise in the realm of pancreatic cancer research.
    Toyaburgine
  • HY-W339757
    Dioctanoylphosphatidic acid sodium
    Dioctanoylphosphatidic acid sodium functions as a modulator of phagocyte respiratory burst, acts as a precursor to diacylglycerol and lysophosphatidic acid, and influences the phosphorylation of the mammalian target of rapamycin (mTOR) while enhancing the viability of gallbladder carcinoma cells treated with histone deacetylase inhibitors (HDACIs); it is derived from glycerophospholipid through the action of phospholipase D.
    Dioctanoylphosphatidic acid sodium
  • HY-N0047R
    Polyphyllin I (Standard)
    Inhibitor
    Polyphyllin I (Standard) is the analytical standard of Polyphyllin I. This product is intended for research and analytical applications. Polyphyllin I is a bioactive constituent extracted from Paris polyphylla, has strong anti-tumor activity. Polyphyllin I is an activator of the JNK signaling pathway and is an inhibitor of PDK1/Akt/mTOR signaling. Polyphyllin I induces autophagy, G2/M phase arrest and apoptosis.
    Polyphyllin I (Standard)
  • HY-15268
    PP487
    Inhibitor
    PP487 is a dual inhibitor of tyrosine kinase/PI(3)Ks with IC50 values of 0.017 μM, 0.072 μM, 0.004 μM, 0.01 μM, 0.55 μM, 0.22 μM, and < 0.01 μM against DNA-PK, mTOR, Hck, Src, EGFR, EphB4, and PDGFR, respectively. PP487 can be used for cancer research.
    PP487
  • HY-N0735R
    Phellodendrine chloride (Standard)
    Agonist
    Phellodendrine chloride (Standard) is the analytical standard of Phellodendrine chloride (HY-N0735). Phellodendrine chloride is an orally active plant alkaloid. Phellodendrine chloride inhibits the proliferation of KRAS-mutated pancreatic cancer cells by suppressing macropinocytosis and glutamine metabolism, inducing ROS accumulation and mitochondrial apoptosis. Phellodendrine chloride promotes autophagy by activating the AMPK/mTOR pathway, alleviating intestinal damage in ulcerative colitis. Phellodendrine chloride can alleviate gouty arthritis by inhibiting the IL-6/STAT3 signaling pathway. Phellodendrine chloride suppresses allergic reactions by altering the conformation of MRGPRB3/MRGPRX2 protein, thereby inhibiting the activation of PKC and subsequent downstream MAPK and NF-κB signaling. Phellodendrine chloride inhibits the AKT/NF-κB pathway and down-regulates the expression of COX-2, thereby protecting zebrafish embryos from oxidative stress. Phellodendrine chloride has an anti-major depressive disorder (MDD) effect by down-regulating CHRM1, HTR1A, and the PI3K/Akt signaling pathway.
    Phellodendrine chloride (Standard)
  • HY-RS08812
    Mtor Rat Pre-designed siRNA Set A
    Inhibitor

    Mtor Rat Pre-designed siRNA Set A contains three designed siRNAs for Mtor gene (Rat), as well as a negative control, a positive control, and a FAM-labeled negative control.

    Mtor Rat Pre-designed siRNA Set A
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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