TMCB

Dual-kinase inhibitor; inhibits CK2 and ERK8 CAS# 905105-89-7

TMCB

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Chemical structure

TMCB

3D structure

Chemical Properties of TMCB

Cas No. 905105-89-7 SDF Download SDF
PubChem ID 46943415 Appearance Powder
Formula C11H9Br4N3O2 M.Wt 534.82
Type of Compound N/A Storage Desiccate at -20°C
Solubility Soluble to 25 mM in DMSO
Chemical Name 2-[4,5,6,7-tetrabromo-2-(dimethylamino)benzimidazol-1-yl]acetic acid
SMILES CN(C)C1=NC2=C(N1CC(=O)O)C(=C(C(=C2Br)Br)Br)Br
Standard InChIKey PHAOTASRLQMKBE-UHFFFAOYSA-N
Standard InChI InChI=1S/C11H9Br4N3O2/c1-17(2)11-16-9-7(14)5(12)6(13)8(15)10(9)18(11)3-4(19)20/h3H2,1-2H3,(H,19,20)
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Biological Activity of TMCB

DescriptionDual-kinase inhibitor; inhibits both casein kinase 2 (CK2) and extracellular-signal-regulated kinase 8 (ERK8) (IC50 = 0.50 μM for both CK2 and ERK8). Displays selectivity for CK2 over protein kinases normally susceptible to CK2 inhibitors (Ki values are 0.25, 8.65, 11.90 and 15.25 μM for CK2, PIM1, DYRK1a and HIPK2 respectively).

TMCB Dilution Calculator

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TMCB Molarity Calculator

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Preparing Stock Solutions of TMCB

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 1.8698 mL 9.3489 mL 18.6979 mL 37.3958 mL 46.7447 mL
5 mM 0.374 mL 1.8698 mL 3.7396 mL 7.4792 mL 9.3489 mL
10 mM 0.187 mL 0.9349 mL 1.8698 mL 3.7396 mL 4.6745 mL
50 mM 0.0374 mL 0.187 mL 0.374 mL 0.7479 mL 0.9349 mL
100 mM 0.0187 mL 0.0935 mL 0.187 mL 0.374 mL 0.4674 mL
* Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations.

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References on TMCB

High-dose thiotepa, melphalan and carboplatin (TMCb) followed by autologous peripheral blood stem cell transplantation in patients with lymphoma -- a retrospective evaluation.[Pubmed:15354206]

Bone Marrow Transplant. 2004 Nov;34(9):781-6.

The purpose of this evaluation was to investigate the efficacy of high-dose chemotherapy with thiotepa, melphalan, and carboplatin (TMCB), and of autologous peripheral blood stem cell (PBSC) infusion in patients with aggressive non-Hodgkin's lymphoma (NHL) or Hodgkin's disease (HD). A total of 42 patients, 23 with intermediate-grade NHL and 19 with HD, received thiotepa (500 mg/m2), melphalan (100 mg/m2), and carboplatin (1050-1350 mg/m2) followed by autologous PBSC infusion. Of 21 patients with more advanced disease, four had primary refractory disease, one was in complete remission (CR)-2, 11 were in first refractory relapse, and five were beyond first relapse. Of 21 patients with less advanced disease, two were in CR-1, four were in CR-2, and 15 were in first responding relapse. In all, 14 patients (33%) had received prior radiotherapy prohibiting a total-body irradiation (TBI)-based conditioning regimen. The projected 2-year probabilities of survival, event-free survival (EFS), and relapse for all patients were 0.65, 0.60, and 0.21 (0.85, 0.80, and 0.10 for patients with less advanced disease and 0.47, 0.42, and 0.33 for patients with more advanced disease). The probability of nonrelapse mortality in the first 100 days was 0.12. Grade 3-4 regimen-related toxicities (RRT) occurred in five of 42 (12%) patients and death due to grade-4 RRT occurred in only one (2.5%) patient. These preliminary data suggest that 0.42% EFS in this study for advanced disease patients is highly encouraging and high-dose TMCB followed by autologous PBSC transplantation is well tolerated as well as an effective regimen in patients with intermediate-grade NHL or HD, and may be comparable to some previously used regimens including TBI-based regimens.

High-dose thiotepa, melphalan and carboplatin (TMCb) followed by autologous stem cell transplantation in patients with advanced breast cancer: a retrospective evaluation.[Pubmed:12732881]

Bone Marrow Transplant. 2003 May;31(9):755-61.

This study was conducted to evaluate the efficacy of high-dose thiotepa, melphalan and carboplatin (TMCB) regimen in 27 patients undergoing autologous stem cell transplantation (ASCT) for metastatic breast cancer. A total of 27 patients with stage IV breast cancer underwent ASCT following thiotepa (500 mg/m(2)), melphalan (100 mg/m(2)) and carboplatin (1200-1350 mg/m(2)). Of 27 patients, 17 had refractory relapse, eight had responding relapse, and two had no evidence of disease (NED) at the time of transplant. In all, 11 patients had only bone disease, nine had bone plus visceral disease, three had only visceral disease, and two had locoregional recurrent disease. The median time from diagnosis to transplant was 1081 days (range 180-2341). Staging for evaluation of response was performed 4-6 months after transplantation. Five patients were not evaluable (NE) for response because of NED at transplant (n=2) or early death due to transplant-related complications (n=3) (two of viral pneumonia and one of regimen-related toxicity) occurring at a median of 4 days (range 11-46) post-transplant. One of the two patients who was NED at the time of transplant is still NED on day 760 post-transplant. Seven of 15 refractory (47%) and 5/7 (71%) responsive patients with evaluable disease achieved a complete response of all measurable disease or all soft-tissue disease with at least improvement in bone lesions. Of 27 patients (37%),(10) are alive and progression-free, a median of 582 days (range 410-1380) after treatment, 6/17 (35%) with refractory disease and 4/10 (40%) with responsive disease. The probability of progression-free survival (PFS) for all patients was 0.50. The probabilities of PFS at 2 years for patients with refractory (n=17) and responsive (n=10) disease were 0.42 and 0.60, respectively. PFS at 2 years for the 14 patients who were NED or achieved CR/PR(*) following-HDC was 0.67. PFS at 2 years for patients who did not achieve CR/PR(*) following-DHC was 0.33. These preliminary data suggest that high-dose TMCB followed by autologous stem cell transplantation is an effective regimen for patients with advanced breast cancer and may be comparable to some previously used regimens.

A phase I dose escalation study of high-dose thiotepa, melphalan and carboplatin (TMCb) followed by autologous peripheral blood stem cell transplantation (PBSCT) in patients with solid tumors and hematologic malignancies.[Pubmed:10745253]

Bone Marrow Transplant. 2000 Apr;25(7):697-703.

The purpose of this study was to determine the maximum tolerated dose of carboplatin administered with 500 mg/m2 thiotepa and 100 mg/m2 melphalan followed by autologous peripheral blood stem cell (PBSC) infusion in patients with refractory malignancies. Twenty-eight patients with refractory malignancies received high-dose thiotepa (500 mg/m2, melphalan (100 mg/m2) and escalating doses of carboplatin 900-1500 mg/m2) followed by infusion of cryopreserved autologous PBSCs. The maximum tolerated doses were determined to be 500 mg/m2 thiotepa, 100 mg/m2 melphalan and 1350 mg/m2 carboplatin. Two consecutive patients receiving 1500 mg/m2 carboplatin experienced grade 3 mucositis and colitis. Ten patients were enrolled at the maximum tolerated dose and none had grade 3-4 regimen-related toxicity and mortality. All patients at this level experienced grade 1-2 mucositis, 90% grade 1-2 gastrointestinal toxicity, 30% grade 1-2 cardiac and renal toxicity, and 10% experienced grade 1 hepatic toxicity. The median time to achieve a granulocyte count of 0.5x10(9)/l was 9 days (range 7-12 days) and platelet count of 20x10(9)/l was 10 days (range 7-15 days). Of eight patients with stage IV refractory breast cancer, even were evaluable for response, one patient on day 75 will be evaluated soon. Five of seven (71.5%) evaluable patients achieved a complete remission (CR) and two had no response. Of seven patients with non-Hodgkin's lymphoma (n = 4) or Hodgkin's disease (n = 3), five achieved a CR (71.5%). Thiotepa, melphalan and carboplatin can be administered in high doses with tolerable mucositis as the major side-effect. This combination has significant activity in patients with breast cancer, and phase II studies in patients with breast cancer and other chemotherapy-sensitive malignancies are warranted.

The selectivity of inhibitors of protein kinase CK2: an update.[Pubmed:18588507]

Biochem J. 2008 Nov 1;415(3):353-65.

CK2 (casein kinase 2) is a very pleiotropic serine/threonine protein kinase whose abnormally high constitutive activity has often been correlated to pathological conditions with special reference to neoplasia. The two most widely used cell permeable CK2 inhibitors, TBB (4,5,6,7-tetrabromo-1H-benzotriazole) and DMAT (2-dimethylamino-4,5,6,7-tetrabromo-1H-benzimidazole), are marketed as quite specific CK2 blockers. In the present study we show, by using a panel of approx. 80 protein kinases, that DMAT and its parent compound TBI (or TBBz; 4,5,6,7-tetrabromo-1H-benzimidazole) are potent inhibitors of several other kinases, with special reference to PIM (provirus integration site for Moloney murine leukaemia virus)1, PIM2, PIM3, PKD1 (protein kinase D1), HIPK2 (homeodomain-interacting protein kinase 2) and DYRK1a (dual-specificity tyrosine-phosphorylated and -regulated kinase 1a). In contrast, TBB is significantly more selective toward CK2, although it also inhibits PIM1 and PIM3. In an attempt to improve selectivity towards CK2 a library of 68 TBB/TBI-related compounds have been tested for their ability to discriminate between CK2, PIM1, HIPK2 and DYRK1a, ending up with seven compounds whose efficacy toward CK2 is markedly higher than that toward the second most inhibited kinase. Two of these, K64 (3,4,5,6,7-pentabromo-1H-indazole) and K66 (1-carboxymethyl-2-dimethylamino-4,5,6,7-tetrabromo-benzimidazole), display an overall selectivity much higher than TBB and DMAT when tested on a panel of 80 kinases and display similar efficacy as inducers of apoptosis.

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