Marizomib (Salinosporamide A) is a second-generation, irreversible, brain-penetrant, pan-proteasome inhibitor. Marizomib inhibits the CT-L (β5), CT-T-laspase-like (C-L, β1) and trypsin-like (T-L, β2) activities of the 20S proteasome (IC50=3.5, 28, and 430 nM, respectively).
Marizomib (Salinosporamide A) (0.1-10000 nM; 72 hours) effectively reduces survival of D-54 and U-251 cells in a dose-dependent manner. The IC50s are ~52 nM for U-251 and ~20 nM for D-54.
Marizomib (24 hours; 60 nM) induces apoptosis and caspase-3 activation in glioma cells.
Medlife has not independently confirmed the accuracy of these methods. They are for reference only.
Cell Proliferation Assay
Cell Line:
U-251 and D-54 cells
Concentration:
0.1, 1, 10, 100, 1000, 10000 nM
Incubation Time:
72 hours
Result:
Effectively reduced survival of D-54 and U-251 cells in a dose-dependent manner.
Apoptosis Analysis
Cell Line:
D-54 cells
Concentration:
60 nM
Incubation Time:
24 hours
Result:
Induces D-54 cells apoptosis.
Western Blot Analysis
Cell Line:
D-54 cells
Concentration:
60 nM
Incubation Time:
24 hours
Result:
Led to increased activity of caspase-3 in a dose-dependent manner.
体内研究(In Vivo)
Marizomib (Salinosporamide A) (0.15 mg/kg; i.v; twice a week for three weeks) significantly decreases tumor growth, and is not associated with any toxicity.
Medlife has not independently confirmed the accuracy of these methods. They are for reference only.
Animal Model:
CB-17 SCID-male mice (4-6 weeks old)
Dosage:
0.15 mg/kg
Administration:
i.v; twice a week for three weeks
Result:
Significantly decreased tumor growth, and was not associated with any toxicity.