KU-0063794

Selective mTOR inhibitor

Rapamycin (Sirolimus) : mTORC1-selective, IC50=~0.1 nM.

Most Potent mTOR Inhibitor

Rapamycin (Sirolimus) : mTOR, IC50=~0.1 nM.

FDA-approved mTOR Inhibitor

Temsirolimus (CCI-779, NSC 683864) : Approved by FDA for Renal Cell Carcinoma (RCC).

Newest mTOR Inhibitor

XL388 ^New : Highly potent, selective, ATP-competitive inhibitor of mTOR with IC50 of 9.9 nM, 1000-fold selectivity over the closely related PI3K kinases.

MHY1485 ^New

MHY1485 is a potent, and cell-permeable mTOR activator, and also potently inhibits autophagy.

CHIR-99021 (CT99021) ^New

CHIR-99021 (CT99021) is a GSK-3α and GSK-3β inhibitor with IC50 of 10 nM and 6.7 nM, respectively. CHIR99201 does not exhibit cross-reactivity against cyclin-dependent kinases (CDKs) and shows a 350-fold selectivity toward GSK-3β compared to CDKs. CHIR99021 functions as a Wnt/β-catenin activator and induces autophagy.

Dorsomorphin (Compound C) ^New

Dorsomorphin (Compound C, BML-275) is a potent, reversible, selective AMPK inhibitor with K_i of 109 nM in cell-free assays, exhibiting no significant inhibition of several structurally related kinases including ZAPK, SYK, PKCθ, PKA, and JAK3. Dorsomorphin selectively inhibits the BMP type I receptors ALK2, ALK3 and ALK6. Dorsomorphin is used in promoting specific cell differentiation and inducing cancer cell line autophagy. For animal testing, the water-soluble S7306 Dorsomorphin (Compound C) 2HCl is recommended.

Rapamycin (AY-22989)

Rapamycin (AY-22989, Rapamune, Sirolimus, NSC-2260804) is a specific mTOR inhibitor with IC50 of ~0.1 nM HEK293 cells.

Everolimus (RAD001)

Everolimus (RAD001, SDZ-RAD) is an mTOR inhibitor of FKBP12 with IC50 of 1.6-2.4 nM in a cell-free assay. Everolimus induces cell apoptosis and autophagy and inhibits tumor cells proliferation.

AZD8055

AZD8055 is a novel ATP-competitive mTOR inhibitor with IC50 of 0.8 nM in MDA-MB-468 cells with excellent selectivity (∼1,000-fold) against PI3K isoforms and ATM/DNA-PK. AZD8055 induces caspase-dependent apoptosis and also induces autophagy. Phase 1.

Features:First drug to inhibit both types of mTOR protein.

Torin 1

Torin 1 is a potent inhibitor of mTORC1/2 with IC50 of 2 nM/10 nM in cell-free assays; exhibits 1000-fold selectivity for mTOR than PI3K.

Temsirolimus (CCI-779)

Temsirolimus (CCI-779, NSC 683864) is a specific mTOR inhibitor with IC50 of 1.76 μM in a cell-free assay. Temsirolimus induces autophagy and apoptosis.

Sapanisertib (MLN0128)

Sapanisertib (MLN0128, INK 128, TAK-228) is a potent and selective mTOR inhibitor with IC50 of 1 nM in cell-free assays; >200-fold less potent to class I PI3K isoforms, superior in blocking mTORC1/2 and sensitive to pro-invasion genes (vs Rapamycin). Phase 1.

Tacrolimus (FK506)

Tacrolimus (FK506, FR900506, Fujimycin, Prograf) is a 23-membered macrolide lactone, it reduces peptidyl-prolyl isomerase activity in T cells by binding to the immunophilin FKBP12 (FK506 binding protein) creating a new complex. Tacrolimus also inhibits the phosphatase activity of calcineurin. Tacrolimus induces vascular endothelial autophagy.