mTOR Inhibitor

Rapamycin (Sirolimus; AY 22989) is a potent and specific blood-brain barrier-transmissible mTOR inhibitor with an IC₅₀ of 0.1 nM in HEK293 cells. Rapamycin is a molecular glue that binds FKBP12 and mTOR proteins together, thereby inhibiting mTOR kinase activity. Rapamycin binds to FKBP12 and specifically acts as an allosteric inhibitor of mTORC1. Rapamycin is an autophagy activator, an immunosuppressant.

Y-27632 is a ROCK inhibitor with K_i values of 220 nM and 300 nM for ROCK1 and ROCK2, respectively. Y-27632 exerts anti-inflammatory and immunomodulatory effects in systemic lupus erythematosus models by inhibiting the ROCK/NF-κB pathway. Y-27632 enhances autophagy by inhibiting the AKT/mTOR pathway, thereby inducing apoptosis apoptosis in oral squamous cell carcinoma. Y-27632 induces the formation of tunneling nanotubes in ARPE-19 cells and significantly enhances mitochondrial transfer through these channels. Y-27632 promotes neurite outgrowth in PC12 cells by activating the Rac1/NOX1/ROS/AKT/PAK1 signaling cascade.

Metformin (1,1-Dimethylbiguanide) 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 exerts central glucose-lowering effects by inhibiting Ras-related protein 1 (Rap1) in SF1 hypothalamic neurons. Metformin also inhibits liver oxidative stress, nitrosative stress, inflammation, and apoptosis caused by liver ischemia/reperfusion injury. In addition, Metformin 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.

MK-2206 dihydrochloride (MK-2206 2HCl) is an orally active pan-AKT inhibitor, with IC₅₀ values of 8 nM, 12 nM and 65 nM against AKT1, AKT2 and AKT3, respectively. MK-2206 dihydrochloride inhibits the Akt/mTOR signaling pathway and reduces the levels of downstream GSK3β and Mcl-1 via proteasomal degradation. MK-2206 dihydrochloride induces G1-phase cell cycle arrest, apoptosis, epithelial-mesenchymal transition, fibroblast activation and extracellular matrix deposition. MK-2206 dihydrochloride causes transient hyperglycemia and hyperinsulinemia in animals. MK-2206 dihydrochloride can be used in research related to solid tumors, renal fibrosis and hypercholesterolemia.

(Rac)-LRK-4189 is the racemate of LRK-4189 (HY-175751).

Sialorphin TFA is a neutral endopeptidase (NEP) and aminopeptidase N (APN) inhibitor that responds to androgen signals. Sialorphin TFA blocks the degradation of endogenous opioid peptides and interacts with μ-, δ-, κ-opioid receptors. Sialorphin TFA regulates the ERK/mTOR signaling pathway by inducing cell cycle arrest, enhancing ERK1/2 activity, and reducing the phosphorylation levels of mTOR, 4E-BP1, p70S6K; accordingly, Sialorphin TFA exhibits antiproliferative activity against colorectal cancer, glioma and prostate cancer cells without cytotoxicity. In addition, Sialorphin TFA also produces antinociceptive responses, regulates sexual behavior, relaxes corpus cavernosum smooth muscle, and alleviates experimental colitis. Sialorphin TFA is also a copper (II) ion-binding ligand. Sialorphin TFA has been used in mechanistic studies related to cancer, pain management and inflammatory bowel disease.

Everolimus (RAD001) is a Rapamycin (HY-10219) derivative and a potent, selective, orally active, blood-brain barrier-permeable mTOR1 inhibitor. Everolimus binds to FKBP-12 to generate an immunosuppressive complex. Everolimus inhibits tumor cells proliferation and induces cell apoptosis and autophagy. Everolimus has potent immunosuppressive and anticancer activities.

Torin 1 is a potent inhibitor of mTOR with an IC₅₀ of 3 nM. Torin 1 inhibits both mTORC1/2 complexes with IC₅₀ values between 2 and 10 nM. Torin 1 is an effective inducer of autophagy.

Daporinad (FK866) is a non-competitive inhibitor of nicotinamide phosphoribosyltransferase (Nampt), with a K_i value of 0.3 nM. Daporinad depletes NAD+ and ATP levels, inhibits mTORC1 and MAPK/ERK pathways, and activates TFEB to induce autophagy. Daporinad causes the depletion of the endoplasmic reticulum Ca²⁺ pool, ultimately weakening the mitogen-induced Ca²⁺ signal and the activation and function of T cells. Daporinad induces cell cycle arrest and apoptosis, and inhibits cell proliferation. Daporinad can be used for the study of myeloma, liver cancer, and immunosuppression.

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 exerts central glucose-lowering effects by inhibiting Ras-related protein 1 (Rap1) in SF1 hypothalamic neurons. 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.

L-Glutamine-¹³C₅ 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.

AZD-8055 is a potent, selective, and orally bioavailable ATP-competitive mTOR kinase inhibitor with an IC₅₀ of 0.8 nM. AZD-8055 inhibits both mTORC1 and mTORC2.

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

Temsirolimus is an inhibitor of mTOR with an IC₅₀ of 1.76 μM. Temsirolimus activates autophagy and prevents deterioration of cardiac function in animal model.

Dactolisib (BEZ235) is an orally active and dual pan-class I PI3K and mTOR kinase inhibitor with IC₅₀s of 4 nM/5 nM/7 nM/75 nM, and 20.7 nM for p110α/p110γ/p110δ/p110β and mTOR, respectively. Dactolisib (BEZ235) inhibits both mTORC1 and mTORC2.

Torin 2 is an mTOR inhibitor with EC₅₀ of 0.25 nM for inhibiting cellular mTOR activity, and exhibits 800-fold selectivity over PI3K (EC₅₀: 200 nM). Torin 2 also inhibits DNA-PK with an IC₅₀ of 0.5 nM in the cell free assay. Torin 2 can suppress both mTORC1 and mTORC2.

Gedatolisib (PKI-587) is a highly potent dual inhibitor of PI3Kα, PI3Kγ, and mTOR with IC₅₀s of 0.4 nM, 5.4 nM and 1.6 nM, respectively. Gedatolisib is equally effective in both complexes of mTOR, mTORC1 and mTORC2.

Dihydromyricetin is a potent inhibitor with an IC₅₀ of 48 μM on dihydropyrimidinase. Dihydromyricetin can activate autophagy through inhibiting mTOR signaling. Dihydromyricetin suppresses the formation of mTOR complexes (mTORC1/2). Dihydromyricetin is also a potent influenza RNA-dependent RNA polymerase inhibitor with an IC₅₀ of 22 μM.

Omipalisib (GSK2126458) is an orally active and highly selective inhibitor of PI3K with K_is of 0.019 nM/0.13 nM/0.024 nM/0.06 nM and 0.18 nM/0.3 nM for p110α/β/δ/γ, mTORC1/2, respectively. Omipalisib has anti-cancer activity.

PI-103 is a potent PI3K and mTOR inhibitor with IC₅₀s of 8 nM, 88 nM, 48 nM, 150 nM, 20 nM, and 83 nM for p110α, p110β, p110δ, p110γ, mTORC1, and mTORC2. PI-103 also inhibits DNA-PK with an IC50 of 2 nM. PI-103 induces autophagy.