Rapamycin | CAS:53123-88-9

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Name:Rapamycin; Sirolimus
Cat. No. :CS-0063
CAS No. :53123-88-9
Formula:C51H79NO13
M. Wt. : 914.17
Solubility:DMSO: ≥ 28 mg/mL

Rapamycin is a specific mTOR inhibitor with IC50 of 0.1 nM.IC50 & Target: IC50: 0.1 nM (mTOR)[1]In Vitro: Rapamycin inhibits endogenous mTOR activity in HEK293 cells with IC50 of 0.1 nM, more potently than iRap and AP21967 with IC50 of 5 nM and 10 nM, respectively[1]. Rapamycin exerts its antitumor effect on malignant glioma cells by inducing autophagy and suggest that in malignant glioma cells a disruption of the PI3K/Akt signaling pathway could greatly enhance the effectiveness of mTOR inhibitors. Rapamycin inhibits cell viability in all three cell lines in a dose-dependent manner, but their sensitivities varied. The IC50 levels of T98G, U87-MG, and U373-MG cells are 2 nM, 1 μM, and >25 μM, respectively[3].In Vivo: Treatment with Rapamycin (i.p, 1.5 mg/kg) almost completely prevents the hypertrophic increases in plantaris muscle weight and fibre size at 7 and 14 days[4]. WT or LS/+ mice are treated daily Rapamycin (2 mg/kg body weight i.p.) for 4 weeks, follows by an additional 4 weeks of weekly injections of the same dose. There is significant reversal of the abnormal fetal gene expression profile of hearts from Rapamycin-treated LS/+ mice[5].

Marin TM, et al. Rapamycin reverses hypertrophic cardiomyopathy in a mouse model of LEOPARD syndrome-associatedPTPN11 mutation. J Clin Invest. 2011 Mar;121(3):1026-43. Lalic H, et al. Rapamycin enhances dimethyl sulfoxide-mediated growth arrest in human myelogenous leukemia cells. Leuk Lymphoma. 2012 Nov;53(11):2253-61. Takeuchi H, et al. Synergistic augmentation of rapamycin-induced autophagy in malignant glioma cells by phosphatidylinositol 3-kinase/protein kinase B inhibitors. Cancer Res, 2005, 65(8), 3336-3346. Edwards SR, et al. The rapamycin-binding domain of the protein kinase mammalian target of rapamycin is a destabilizing domain. J Biol Chem, 2007, 282(18), 13395-13401. Bodine SC, et al. Akt/mTOR pathway is a crucial regulator of skeletal muscle hypertrophy and can prevent muscle atrophy in vivo. Nat Cell Biol, 2001, 3(11), 1014-1019. Hino K, et al. Activin-A enhances mTOR signaling to promote aberrant chondrogenesis in fibrodysplasia ossificans progressiva. J Clin Invest. 2017 Sep 1;127(9):3339-3352.