In vitro transcription of capped mRNA with modified nucleotides and Poly(A) tail
Tyramide Signal Amplification (TSA)
TSA (Tyramide Signal Amplification), used for signal amplification of ISH, IHC and IC etc.
Phos Binding Reagent Acrylamide
Separation of phosphorylated and non-phosphorylated proteins without phospho-specific antibody
Cell Counting Kit-8 (CCK-8)
A convenient and sensitive way for cell proliferation assay and cytotoxicity assay
SYBR Safe DNA Gel Stain
Safe and sensitive stain for visualization of DNA or RNA in agarose or acrylamide gels.
Protect the integrity of proteins from multiple proteases and phosphatases for different applications.
Lomeguatrib is an O6-methylguanine-DNA-methyl-transferase (MGMT) inhibitor , with an IC50 value of about 6 nM to inactivate MGMT in MCF-7 cells, effectively .
MGMT activity is closely related to MTIC (a metabolite of dacarbazine)-mediated DNA damage .
Lomeguatrib sensitized MGMT-activity-bearing A375P cells to temozolomide (TMZ), but it failed to affect the effect of dacarbazine (DTIC). In other mutBRAF cells and several mutNRAS cell lines such as WM1361, similar results were obtained .
With one exception, patients treated with lomeguatrib showed no active or very low MGMT in PBMCs. Lomeguatrib at a dose of 20 mg resulted in 16.7 fmol/μg DNA active MGMT in a CNS-tumor-bearing patient. This patient showed a percentage of 25% for inactive tumor MGMT. This percentage was lower than that in the other two CNS patients with lomeguatrib at the same dose. Different tumor types showed remarkable differences in total tumor MGMT. Prostate cancers had the highest (554 ± 404 fmol/mg protein), CNS tumors had the lowest (89.9 ± 44.5 fmol/mg protein), and colorectal tumors had intermediate levels of total protein (244 ± 181 fmol/mg protein). In the colorectal cancer, the primary CNS tumor, and the prostate cancer of patients, increasing lomeguatrib doses resulted in increasing inactive MGMT proportions .
. Imanol Arozarena, Ibai Goicoechea, Oihane Erice, et al. Differential chemosensitivity to antifolate drugs between RAS and BRAF melanoma cells. Molecular Cancer, 2014, 13:154.
. M Clemons, J Kelly, AJ Watson, et al. O6-(4-bromothenyl)guanine reverses temozolomide resistance in human breast tumour MCF-7 cells and xenografts. British Journal of Cancer, 2005, 93:1152-1156.
. Amanda J. Watson, Ami Sabharwal, Mary Thorncroft, et al. Tumor O6-methylguanine-DNA Methyltransferase Inactivation by Oral Lomeguatrib. Clinical Cancer Research, 2010, 16(2):743-9.
|Physical Appearance||A solid|
|Storage||Store at -20°C|
|Solubility||≥50 mg/mL in DMSO with gentle warming; insoluble in EtOH; insoluble in H2O|
|Shipping Condition||Evaluation sample solution: ship with blue ice. All other available sizes: ship with RT, or blue ice upon request.|
|General tips||For obtaining a higher solubility, please warm the tube at 37°C and shake it in the ultrasonic bath for a while. Stock solution can be stored below -20°C for several months.|
|Description||Lomeguatrib is a potent inhibitor of O6-alkylguanine-DNA-alkyltransferase with IC50 of 5 nM.|
Quality Control & MSDS
- View current batch: