Temsirolimus
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MedKoo CAT#: 202870

CAS#: 162635-04-3

Description: Temsirolimus is an ester analog of rapamycin. Temsirolimus binds to and inhibits the mammalian target of rapamycin (mTOR), resulting in decreased expression of mRNAs necessary for cell cycle progression and arresting cells in the G1 phase of the cell cycle. mTOR is a serine/threonine kinase which plays a role in the PI3K/AKT pathway that is upregulated in some tumors. Temsirolimus (CCI-779) is an intravenous drug for the treatment of renal cell carcinoma (RCC), developed by Wyeth Pharmaceuticals and approved by the U.S. Food and Drug Administration (FDA) in late May 2007, and was also approved by the European Medicines Agency (EMEA) on November 2007.


Chemical Structure

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Temsirolimus
CAS# 162635-04-3

Theoretical Analysis

MedKoo Cat#: 202870
Name: Temsirolimus
CAS#: 162635-04-3
Chemical Formula: C56H87NO16
Exact Mass: 1029.60249
Molecular Weight: 1030.29
Elemental Analysis: C, 65.28; H, 8.51; N, 1.36; O, 24.85

Price and Availability

Size Price Availability Quantity
10.0mg USD 120.0 Ready to ship
25.0mg USD 230.0 Ready to ship
50.0mg USD 440.0 Ready to ship
100.0mg USD 795.0 Ready to ship
200.0mg USD 1450.0 Ready to ship
500.0mg USD 2950.0 Ready to ship
1.0g USD 4250.0 Ready to ship
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Synonym: CCI779; CCI-779; CCI 779; Temsirolimus; US brand name: Torisel.

IUPAC/Chemical Name: (1R,2R,4S)-4-{(2R)-2-[(3S,6R,7E,9R,10R,12R,14S,15E,17E,19E,21S,23S,26R,27R,34aS)-9,27-dihydroxy-10,21-dimethoxy-6,8,12,14,20,26-hexamethyl-1,5,11,28,29-pentaoxo-1,4,5,6,9,10,11,12,13,14,21,22,23,24,25,26,27,28,29,31,32,33,34,34a-tetracosahydro-3H-23,27-epoxypyrido[2,1-c][1,4]oxazacyclohentriacontin-3-yl]propyl}-2-methoxycyclohexyl 3-hydroxy-2-(hydroxymethyl)-2-methylpropanoate.

InChi Key: CBPNZQVSJQDFBE-FUXHJELOSA-N

InChi Code: InChI=1S/C56H87NO16/c1-33-17-13-12-14-18-34(2)45(68-9)29-41-22-20-39(7)56(67,73-41)51(63)52(64)57-24-16-15-19-42(57)53(65)71-46(30-43(60)35(3)26-38(6)49(62)50(70-11)48(61)37(5)25-33)36(4)27-40-21-23-44(47(28-40)69-10)72-54(66)55(8,31-58)32-59/h12-14,17-18,26,33,35-37,39-42,44-47,49-50,58-59,62,67H,15-16,19-25,27-32H2,1-11H3/b14-12+,17-13+,34-18+,38-26+/t33-,35-,36-,37-,39-,40+,41+,42+,44-,45+,46+,47-,49-,50+,56-/m1/s1

SMILES Code: O=C(O[C@H]1[C@H](OC)C[C@H](C[C@H]([C@@H](OC([C@@](CCCC2)([H])N2C(C([C@@]3(O)[C@H](C)CC[C@@](O3)([H])C[C@H](OC)/C(C)=C/C=C/C=C/[C@@H](C)C[C@@H](C)C([C@H](OC)[C@H](O)/C(C)=C/[C@H]4C)=O)=O)=O)=O)CC4=O)C)CC1)C(C)(CO)CO

Appearance: Solid powder

Purity: >98% (or refer to the Certificate of Analysis)

Shipping Condition: Shipped under ambient temperature as non-hazardous chemical. This product is stable enough for a few weeks during ordinary shipping and time spent in Customs.

Storage Condition: Dry, dark and at 0 - 4 C for short term (days to weeks) or -20 C for long term (months to years).

Solubility: Soluble in DMSO, not in water

Shelf Life: >2 years if stored properly

Drug Formulation: This drug may be formulated in DMSO

Stock Solution Storage: 0 - 4 C for short term (days to weeks), or -20 C for long term (months).

HS Tariff Code: 2934.99.9001

Biological target: Temsirolimus is an inhibitor of mTOR with an IC50 of 1.76 μM.
In vitro activity: To determine the mechanism of CCI-779 (temsirolimus) inhibition in Bel-7402 cells, this study examined the activities of proteins in the mTOR signaling pathway by western blot. They were: mTOR and phospho-mTOR (Ser2448), downstream target p70S6K and p-p70S6K(Thr389), S6 and phospho-S6 (Ser240/244), 4EBP1 and p-4EBP1(Thr37/46). As shown in Figure 4, CCI-779 inhibited the phosphorylation of mTOR, p70S6K, S6 and 4EBP1, and slightly suppressed the expressions of mTOR, p70S6K, 4EBP1 and S6 in Bel-7402 cells. Reference: Cancer Cell Int. 2013; 13: 30. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3632488/
In vivo activity: Next, this study examined the total protein concentration in BALF (BAL fluid) and the amount of EBD (Evans blue dye) in lungs to assess the capillary-alveolar permeability in the lungs. As shown Fig. 1, B and C, the variables significantly increased in mice treated with temsirolimus in a dose-dependent manner. This study further investigated whether temsirolimus induced recruitment of inflammatory cells into the alveolar space. Diff-Quick staining of BAL cells revealed that the number of inflammatory cells, including neutrophils, lymphocytes, monocytes, and eosinophils, were elevated by temsirolimus in a dose-dependent manner. Increases in neutrophils and monocytes were predominantly detected at 2 wk of treatment, whereas lymphocytes in BALF were increased in a treatment duration-dependent manner (Fig. 1, D–F). Reference: Am J Physiol Lung Cell Mol Physiol. 2014 Jun 15;306(12):L1117-28. https://pubmed.ncbi.nlm.nih.gov/24793166/

Solubility Data

Solvent Max Conc. mg/mL Max Conc. mM
Solubility
DMSO 57.88 56.18
DMF 20.0 19.41
DMF:PBS (pH 7.2) (1:4) 0.2 0.19
Ethanol 71.01 68.92

Preparing Stock Solutions

The following data is based on the product molecular weight 1030.29 Batch specific molecular weights may vary from batch to batch due to the degree of hydration, which will affect the solvent volumes required to prepare stock solutions.

Recalculate based on batch purity %
Concentration / Solvent Volume / Mass 1 mg 5 mg 10 mg
1 mM 1.15 mL 5.76 mL 11.51 mL
5 mM 0.23 mL 1.15 mL 2.3 mL
10 mM 0.12 mL 0.58 mL 1.15 mL
50 mM 0.02 mL 0.12 mL 0.23 mL
Formulation protocol: 1. Al Mamun Bhuyan A, Cao H, Lang F. Triggering of Eryptosis, the Suicidal Erythrocyte Death by Mammalian Target of Rapamycin (mTOR) inhibitor Temsirolimus. Cell Physiol Biochem. 2017;42(4):1575-1591. doi: 10.1159/000479398. Epub 2017 Jul 24. PMID: 28793293. 2. Li S, Liang Y, Wu M, Wang X, Fu H, Chen Y, Wang Z. The novel mTOR inhibitor CCI-779 (temsirolimus) induces antiproliferative effects through inhibition of mTOR in Bel-7402 liver cancer cells. Cancer Cell Int. 2013 Mar 28;13:30. doi: 10.1186/1475-2867-13-30. PMID: 23537100; PMCID: PMC3632488. 3. Chang HW, Wu MJ, Lin ZM, Wang CY, Cheng SY, Lin YK, Chow YH, Ch'ang HJ, Chang VHS. Therapeutic Effect of Repurposed Temsirolimus in Lung Adenocarcinoma Model. Front Pharmacol. 2018 Jul 24;9:778. doi: 10.3389/fphar.2018.00778. PMID: 30087612; PMCID: PMC6066584. 4. Washino S, Ando H, Ushijima K, Hosohata K, Kumazaki M, Mato N, Sugiyama Y, Kobayashi Y, Fujimura A, Morita T. Temsirolimus induces surfactant lipid accumulation and lung inflammation in mice. Am J Physiol Lung Cell Mol Physiol. 2014 Jun 15;306(12):L1117-28. doi: 10.1152/ajplung.00251.2013. Epub 2014 May 2. PMID: 24793166.
In vitro protocol: 1. Al Mamun Bhuyan A, Cao H, Lang F. Triggering of Eryptosis, the Suicidal Erythrocyte Death by Mammalian Target of Rapamycin (mTOR) inhibitor Temsirolimus. Cell Physiol Biochem. 2017;42(4):1575-1591. doi: 10.1159/000479398. Epub 2017 Jul 24. PMID: 28793293. 2. Li S, Liang Y, Wu M, Wang X, Fu H, Chen Y, Wang Z. The novel mTOR inhibitor CCI-779 (temsirolimus) induces antiproliferative effects through inhibition of mTOR in Bel-7402 liver cancer cells. Cancer Cell Int. 2013 Mar 28;13:30. doi: 10.1186/1475-2867-13-30. PMID: 23537100; PMCID: PMC3632488.
In vivo protocol: 1. Chang HW, Wu MJ, Lin ZM, Wang CY, Cheng SY, Lin YK, Chow YH, Ch'ang HJ, Chang VHS. Therapeutic Effect of Repurposed Temsirolimus in Lung Adenocarcinoma Model. Front Pharmacol. 2018 Jul 24;9:778. doi: 10.3389/fphar.2018.00778. PMID: 30087612; PMCID: PMC6066584. 2. Washino S, Ando H, Ushijima K, Hosohata K, Kumazaki M, Mato N, Sugiyama Y, Kobayashi Y, Fujimura A, Morita T. Temsirolimus induces surfactant lipid accumulation and lung inflammation in mice. Am J Physiol Lung Cell Mol Physiol. 2014 Jun 15;306(12):L1117-28. doi: 10.1152/ajplung.00251.2013. Epub 2014 May 2. PMID: 24793166.

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 1: Gomez-Fernandez C, Garden BC, Wu S, Feldman DR, Lacouture ME. The risk of skin rash and stomatitis with the mammalian target of rapamycin inhibitor temsirolimus: a systematic review of the literature and meta-analysis. Eur J Cancer. 2012 Feb;48(3):340-6. Epub 2011 Dec 27. Review. PubMed PMID: 22206873.

2: De Masson A, Fouchard N, Méry-Bossard L, Dauendorffer JN. Cutaneous and mucosal aphthosis during temsirolimus therapy for advanced renal cell carcinoma: review of cutaneous and mucosal side effects of mTOR inhibitors. Dermatology. 2011;223(1):4-8. Epub 2011 Aug 16. Review. PubMed PMID: 21846963.

3: Hess G. Temsirolimus for the treatment of mantle cell lymphoma. Expert Rev Hematol. 2009 Dec;2(6):631-40. Review. PubMed PMID: 21082954.

4: Gerullis H, Ecke TH, Eimer C, Heuck CJ, Otto T. mTOR-inhibition in metastatic renal cell carcinoma. Focus on temsirolimus: a review. Minerva Urol Nefrol. 2010 Dec;62(4):411-23. Review. PubMed PMID: 20944541.

5: Hoy SM, McKeage K. Temsirolimus: In relapsed and/or refractory mantle cell lymphoma. Drugs. 2010 Oct 1;70(14):1819-29. doi: 10.2165/11204940-000000000-00000. Review. PubMed PMID: 20836575.

6: Norum J, Nieder C, Kondo M. Sunitinib, sorafenib, temsirolimus or bevacizumab in the treatment of metastatic renal cell carcinoma: a review of health economic evaluations. J Chemother. 2010 Apr;22(2):75-82. Review. PubMed PMID: 20435564.

7: Ravaud A, Bernhard JC, Gross-Goupil M, Digue L, Ferriere JM. [mTOR inhibitors: temsirolimus and everolimus in the treatment of renal cell carcinoma]. Bull Cancer. 2010;97:45-51. Review. French. PubMed PMID: 20418203.

8: Stock C, Zaccagnini M, Schulze M, Teber D, Rassweiler JJ. Temsirolimus. Recent Results Cancer Res. 2010;184:189-97. Review. PubMed PMID: 20072839.

9: Dancey JE, Curiel R, Purvis J. Evaluating temsirolimus activity in multiple tumors: a review of clinical trials. Semin Oncol. 2009 Dec;36 Suppl 3:S46-58. Review. PubMed PMID: 19963100.

10: Hess G, Smith SM, Berkenblit A, Coiffier B. Temsirolimus in mantle cell lymphoma and other non-Hodgkin lymphoma subtypes. Semin Oncol. 2009 Dec;36 Suppl 3:S37-45. Review. PubMed PMID: 19963099.
  



Additional Information

Temsirolimus (CCI-779) is an intravenous drug for the treatment of renal cell carcinoma (RCC), developed by Wyeth Pharmaceuticals and approved by the U.S. Food and Drug Administration (FDA) in late May 2007, and was also approved by the European Medicines Agency (EMEA) on November 2007. It is a derivative of sirolimus and is sold as Torisel.
 
mTOR (mammalian target of rapamycin) is a kinase enzyme inside the cell that collects and interprets the numerous and varied growth and survival signals received by tumor cells. When the kinase activity of mTOR is activated, its downstream effectors, the synthesis of cell cycle proteins such as cyclin D and hypoxia-inducible factor-1a (HIF-1a) are increased. HIF-1a then stimulates VEGF. Whether or not mTOR kinase is activated, determines whether the tumor cell produces key proteins needed for proliferation, growth, survival, and angiogenesis. mTOR is activated in tumor cells by various mechanisms including growth factor surface receptor tyrosine kinases, oncogenes, and loss of tumor suppressor genes. These activating factors are known to be important for malignant transformation and progression. mTOR is particularly important in the biology of renal cancer (RCC) owing to its function in regulating HIF-1a levels. Mutation or loss of the von Hippel Lindau tumor-suppressor gene is common in RCC and is manifested by reduced degradation of HIF-1a. In RCC tumors, activated mTOR further exacerbates accumulation of HIF-1a by increasing synthesis of this transcription factor and its angiogenic target gene products. Temsirolimus is a specific inhibitor of mTOR and interferes with the synthesis of proteins that regulate proliferation, growth, and survival of tumor cells. Treatment with temsirolimus leads to cell cycle arrest in the G1 phase, and also inhibits tumor angiogenesis by reducing synthesis of VEGF.