Description |
Nocodazole is a rapidly-reversible inhibitor of microtubule. Nocodazole binds to β-tubulin and disrupts microtubule assembly/disassembly dynamics, which prevents mitosis and induces apoptosis in tumor cells.
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Target |
Abl:91 nM (Kd)
ABL(E255K):120 nM (Kd)
ABL(T315I):170 nM (Kd)
BRAF:1.8 μM (Kd)
BRAF(V600E):1.1 μM (Kd)
c-KIT:1.6 μM (Kd)
MEK1:1.7 μM (Kd)
MEK2:1.6 μM (Kd)
MET:1.7 μM (Kd)
PI3Kγ:1.5 μM (Kd)
Microtubule/Tubulin
CRISPR/Cas9
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In Vitro |
Nocodazole exhibits good affinity toward c-KIT, with a Kd value of 1.6 μM in highly malignant human cancer cells. Nocodazole displays good binding affinity toward the components of the mitogen-activated protein kinase (MAPK) pathway, such as BRAF (Kd=1.8 μM), BRAF(V600E) (Kd=1.1 μM), MEK1 (Kd=1.7 μM), and MEK2 (Kd=1.6 μM)[1]. Nocodazole has the highest affinity for αβIV and the lowest affinity for αβIII[2]. After release from the nocodazole block, cells synchronized in mitosis remaine sensitive to very low concentrations of paclitaxel for < 30 min, the time required for spindle formation, yet remains sensitive to vinblastine for > 90 min[3]. Nocodazole (1 nM) induces apoptosis of COLO 205 cancer cells[4]. Nocodazole (≥ 30 µg/mL) significantly increases the percentage of annexin-V-binding cells without significantly modifying average forward scatter of human erythrocytes[5].
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In Vivo |
Nocodazole (5 mg/kg/three times per week, i.p.) has antitumor effects in athymic mice bearing COLO 205 tumor xenografts. Nocodazole (1 nM) + ketoconazole dramatically increase the levels of p21/CIP1 and p27/KIP1 protein in the tumor tissues[4].
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Cell Assay |
Proteins are loaded at 50 μg/lane and separated by 12% (w:v) sodium dodecyl sulfate-polyacrylamide gel electrophoresis, blotted, and probed with antibodies for cyclin E, p53, p21/CIP1, p27/KIP1, glyceraldehyde 3-phosphate dehydrogenase (GAPDH), cyclin A, cyclin D1, cyclin D3, cyclin B, CDK2, CDK4, and cytochrome C. Immunoreactive bands are visualized by incubating with the colorigenic substrates nitroblue tetrazolium and 5-bromo-4-chloro-3-indolyl-phosphate. The expression of GAPDH is used as the control for equal protein loading.
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Animal Admin |
COLO 205 cells are grown in RPMI 1640 supplemented with 10% FCS. Cells are harvested through two consecutive trypsinizations, centrifuged at 300×g; for 5 min, washed twice, and resuspended in sterile phosphate-buffered saline (PBS). Cells (5×105) in 0.1 mL are injected subcutaneously between the scapulae of each nude mouse. After transplantation, tumor size is measured with calipers, and the tumor volume is estimated. Once tumors reach a mean size of 200 mm3, animals receive intraperitoneal injections of DMSO (25 μL), ketoconazole (50 mg/kg), nocodazole (5 mg/kg), or ketoconazole + nocodazole three times per week for 6 wk.
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Density | 1.5±0.1 g/cm3 |
Exact Mass | 301.052124 |
PSA | 112.32000 |
LogP | 2.43 |
Storage condition | 2-8°C |