Attention:

Certain features of Sigma-Aldrich.com will be down for maintenance the evening of Friday August 18th starting at 8:00 pm CDT until Saturday August 19th at 12:01 pm CDT.   Please note that you still have telephone and email access to our local offices. We apologize for any inconvenience.

Microtubule Inhibitors

Product #

Image

Description

Biochem/physiol Actions

Add to Cart

C9754 Colchicine ≥95% (HPLC), powder Antimitotic agent that disrupts microtubules by binding to tubulin and preventing its polymerization. Stimulates the intrinsic GTPase activity of tubulin. Induces apoptosis in several normal and tumor cell lines and activates the JNK/SAPK signaling pathway.
D5566   Dolastatin 15 ≥95%  
E0407 Estramustine sodium phosphate Estradiol mustard prodrug, which binds estradiol receptors irreversibly. Highly effective in treatment of advanced metastatic prostate cancer. Depolymerizes microtubules by binding to microtubule associated proteins (MAPs).
M1404 Nocodazole ≥99% (TLC), powder Nocodazole is an antimitotic agent that disrupts microtubules by binding to β−tubulin and preventing formation of one of the two interchain disulfide linkages, thus inhibiting microtubule dynamics, disruption of mitotic spindle function, and fragmentation of the Golgi complex. Nocodazole arrests the cell cycle at G2/M phase and also prevents phosphorylation of the T cell antigen receptor and inhibits its activity. Nocodazole stimulates the intrinsic GTPase activity of tubulin and activates the JNK/SAPK signaling pathway and induces apoptosis in several normal and tumor cell lines. Nocodazole has been shown to enhance CRISPR homology-directed repair (HDR) efficiency and increase Cas9-mediated editing frequencies.
T7402 Paclitaxel from Taxus brevifolia, ≥95% (HPLC), powder Paclitaxel is a potent anti-neoplastic and anti-mitotic taxane drug, which binds to the N-terminus of β-tubulin and and stabilizes microtubules arresting the cell cycle at the G2/M phase. The microtubule damage induces apoptosis through a JNK-dependent pathway followed by a JNK-independent pathway, perhaps related to the activation of protein kinase A (PKA) or of Raf-1 kinase, resulting in phosphorylation of Bcl-2. A major metabolite via CYP2CB is 6α-hydroxypaclitaxel (6α-OHP).
T1912 Paclitaxel from Taxus yannanensis, powder Paclitaxel is a potent anti-neoplastic and anti-mitotic taxane drug, which binds to the N-terminus of β-tubulin and and stabilizes microtubules arresting the cell cycle at the G2/M phase. The microtubule damage induces apoptosis through a JNK-dependent pathway followed by a JNK-independent pathway, perhaps related to the activation of protein kinase A (PKA) or of Raf-1 kinase, resulting in phosphorylation of Bcl-2. A major metabolite via CYP2CB is 6α-hydroxypaclitaxel (6α-OHP).
T7191 Paclitaxel from semisynthetic (from Taxus sp.), ≥97% Paclitaxel is a potent anti-neoplastic and anti-mitotic taxane drug, which binds to the N-terminus of β-tubulin and and stabilizes microtubules arresting the cell cycle at the G2/M phase. The microtubule damage induces apoptosis through a JNK-dependent pathway followed by a JNK-independent pathway, perhaps related to the activation of protein kinase A (PKA) or of Raf-1 kinase, resulting in phosphorylation of Bcl-2. A major metabolite via CYP2CB is 6α-hydroxypaclitaxel (6α-OHP).
P4405 Podophyllotoxin Inhibits microtubule assembly; antineoplastic.
V1377 Vinblastine sulfate salt powder, ≥96% (HPLC) Plant alkaloid that inhibits microtubule assembly by binding tubulin and inducing self-association in spiral aggregates in a reaction that appears to be regulated by the C-terminus of β-tubulin and is enhanced by GDP and GTP. Depolymerizes microtubules. Arrests the cell cycle in G2/M-phase by blocking mitotic spindle formation. Triggers Raf-1 activation, phosphorylation of bcl-2-family proteins, induction of p53 expression, and apoptosis in several tumor cell lines. Substrate of Pgp and CYP3A4.
V2264 Vinorelbine ditartrate salt hydrate ≥98% (HPLC), powder Vinorelbine is a potent anti-mitotic, anti-tumor agent. Vinorelbine inhibits microtubule assembly. Low neurotoxicity is related to its higher affinity for mitotic microtubules than for axonal microtubules.