Colcemid (Demecolcine), a derivative of colchicine, is a potent mitotic inhibitor[1][2]. Colcemid binds to the protein tubulin and arrest cells in metaphase for karyotyping assays. Colcemid incuces cell apoptosis and can be used for cancer research[2].
Indibulin (ZIO 301) , an orally applicable inhibitor of tubulin assembly, shows potent anticancer activity with a minimal neurotoxicity. Indibulin reduces inter-kinetochoric tension, produces aberrant spindles, activates mitotic checkpoint proteins Mad2 and BubR1, and induces mitotic arrest and apoptosis[1].
Podophyllotoxin is a potent inhibitor of microtubule assembly and DNA topoisomerase II.IC50 Value:Target: Topoisomerase II; Microtubule/TubulinPodophyllotoxin, a kind of non-alkaloid toxin lignan extracted from the roots and rhizomes of Podophyllum plant, has been shown to inhibit the growth of various carcinoma cells. Podophyllotoxin is a natural product that inhibits the polymerization of tubulin and has served as a prototype for the development of diverse antitumor agents in clinical use.
AZD4877 is another isostere to Ispinesib (HY-50759)and also a kinesin spindle protein (Eg5) inhibitor with IC50 of 2 nM.AZD4877 arrests cell mitosis, leads to the formation of the monopolar spindle phenotype and induces apoptosis. AZD4877 inhibits circulating peripheral blood mononuclear cells (PBMCs) and has anti-cancer activity[1][2][3][4][5].
Tubulysin E is a highly cytotoxic peptide isolated from the myxobacterial species Archangium geophyra and Angiococcus disciformis. Tubulysin displays extremely potent cytotoxic activity in mammalian cells, including multidrug-resistant cell lines, with IC50 values in the lower nanomolar range[1]. Tubulysin E is a cytotoxic activity tubulysin which inhibits tubulin polymerization and leads to cell cycle arrest and apoptosis[2].
Orbofiban acetate is an orally active platelet GPIIb/IIIa antagonist that inhibits platelet aggregation.
Mps1-IN-7 is a potent MPS1 inhibitor (IC50 of 0.020 μM) over JNK1 and JNK2 (JNK1 IC50 = 0.11 μM, JNK2 IC50=0.22 μM). Mps1-IN-7 inhibit SW620, CAL51, Miapaca-2, RMG1 cell growth with GI50 values of 0.065, 0.068, 0.25, and 0.110 μM,respectively[1].
Taccalonolide A is a microtubule stabilizer, which is a steroid isolated from Tacca chantrieri, with cytotoxic and antimalarial activities[1][2]. Taccalonolide A causes G2-M accumulation, Bcl-2 phosphorylation and initiation of apoptosis[1]. Taccalonolide A is effective in vitro against cell lines that overexpress P-glycoprotein (Pgp) and multidrug resistance protein 7 (MRP7), with an IC50 of 622 nM for SK-OV-3 cells[3].
TC-I 15 (TC-I-15) is an allosteric, collagen-binding integrin α2β1 inhibitor with IC50 values of 26.8 μM and 0.4 μM for GFOGER and GLOGEN, respectively. TC-I 15 inhibits platelet adhesion to collagen and thrombus deposition[1].
EMD527040 is a potent and highly selective αvβ6 antagonist with antifibrotic activities. EMD527040 can be used for carcinoma and liver fibrosis research[1].
Cyclo(Gly-Arg-Gly-Asp-Ser-Pro) (c(GRGDSP)) is an RGD-containing inhibitory peptide. Cyclo(Gly-Arg-Gly-Asp-Ser-Pro) is a synthetic α5β1 integrin ligand that competitively inhibits the binding of invasin (Inv) to α5β1 integrin expressed on Caco-2 cells[1].
SB-743921 free base is a potent selective inhibitor of the mitotic kinesin KSP (Eg5), with a Ki of 0.1 nM. SB-743921 free base can induce mitotic arrest, block cell cycle progression, induce apoptosis, and can be used in the research of myeloma, leukemia and other diseases[1][2].
Tubulin polymerization-IN-30 (compound 6e) is a potent Tubulin polymerization inhibitor. Tubulin polymerization-IN-30 is a colchicine binding site inhibitor. Tubulin polymerization-IN-30 can disrupt intracellular microtubule organization, arrest cell cycle at the G2/M phase. Tubulin polymerization-IN-30 exhibits the high potency against the cancer cell lines including SGC-7901, A549 and HeLa, with IC50 values of 2.16, 2.21, and 0.403 μM[1].
5-Aminosalicylic acid acts as a specific PPARγ agonist and also inhibits p21-activated kinase 1 (PAK1) and NF-κB.
Taltobulin trifluoroacetate (HTI-286; SPA-110) is an analogue of Hemiasterlin; potent tubulin inhibitor; ADCs cytotoxin.IC50 value:Target: tubulinin vitro: HTI-286 significantly inhibited proliferation of all three hepatic tumor cell lines (mean IC50 = 2 nmol/L +/- 1 nmol/L) in vitro. Interestingly, no decrease in viable primary human hepatocytes (PHH) was detected under HTI-286 exposure [1]. In all cell lines tested, HTI-286 was a potent inhibitor of proliferation and induced marked increases in apoptosis. Despite similar transcriptomic changes regarding cell death and cell cycle regulating genes after exposure to HTI-286 or docetaxel, array analysis revealed distinct molecular signatures for both compounds [2].in vivo: Intravenous administration of HTI-286 significantly inhibited tumor growth in vivo (rat allograft model) [1]. HTI-286 significantly inhibited growth of PC-3 and LNCaP xenografts and retained potency in PC-3dR tumors. Simultaneous castration plus HTI-286 therapy was superior to sequential treatment in the LNCaP model [2].
KIF18A-IN-4 is a moderately potent ATP and microtubule (MT) noncompetitive KIF18A inhibitor (IC50=6.16 μM). KIF18A-IN-4 has selectivity against a large panel of mitotic kinesins and kinases, and does not show any direct effects on tubulin assembly. KIF18A-IN-4 exhibits anti-tumor activity[1].
Tubulin polymerization-IN-52 (compound SC23) is a potent tubulin polymerization inhibitor, with an IC50 of 2.9 μM[1].
Sertaconazole (FI7056 free base) is a broad-spectrum topical antifungal agent, exhibits anti-inflammatory activity via activation of a p38-COX-2-PGE2 pathway. Sertaconazole is also a microtubule inhibitor, shows antiproliferative effect, induces apoptosis and autophagy, and can also inhibit the migration of cells[1][2][3][4].
Blebbistatin is a selective non-muscle myosin II (NMII) inhibitor, promotes directional migration of corneal endothelial cells (CECs) and accelerates wound healing, and better preserves cell junctional integrity and barrier function[1].
AT-1002, a 6-mer synthetic peptide[1], is a tight junction regulator and absorption enhancer[2].
Cryptophycin 1 is a potent cytotoxic antimicrotubule agent which is isolated from Nostoc sp. Cryptophycin 1 can induce cells apoptosis, and exhibits antitumor activity and exceptional antiproliferative potency[1][2][3].
Estramustine phosphate, an estradiol analog, is an orally active antimicrotubule chemotherapy agent. Estramustine phosphate depolymerises microtubules by binding to microtubule associated proteins (MAPs) and/or to tubulin. Estramustine phosphate can interfere mitosis, trigger cell death and induce apoptosis, which can be used for the research of cancer like prostate cancer[1][2][3].
MY-673 is a colchicine binding site inhibitor (CBSI), that inhibits tubulin polymerization. MY-673 inhibits the ERK signaling pathway, which in turn affects SMAD4 protein expression levels in the TGF-β/SMAD pathway. MY-673 inhibited cell proliferation, migration and induced apoptosis in vivo and in vitro[1].
Tubulin polymerization-IN-37 is a tubulin polymerization inhibitor (IC50: 2.3 μΜ). Tubulin polymerization-IN-37 binds to the colchicine site of tubulin and inhibits colchicine binding. Tubulin polymerization-IN-37 can be used in the research of cancers, such as lymphomas[1].
Epothilone E is a related compound of epothilone, which inhibits microtubule protein function and blocks cell division, and has anti-tumor activity[1].
PE859 is a potent inhibitor of both tau and Aβ aggregation with IC50 values of 0.66 and 1.2 μM, respectively.
CK-869 is an Actin-Related Protein 2/3 (ARP2/3) complex inhibitor, with an IC50 of 7 μM.
Tubulin polymerization-IN-36 is a tubulin polymerization inhibitor (IC50: 2.8 μΜ). Tubulin polymerization-IN-36 binds to the colchicine site of tubulin and inhibits colchicine binding. Tubulin polymerization-IN-36 can be used in the research of cancers, such as lymphomas[1].
Alyssin, found in Cruciferous Vegetables, exerts anticancer activity in HepG2 by increasing intracellular reactive oxygen species and tubulin depolymerization[1].
Triclabendazole(CGA89317) is a benzimidazole, it binds to tubulin impairing intracellular transport mechanisms and interferes with protein synthesis.Target: Microtubule/TubulinTriclabendazole treatment produces percentage decreases of the fluke egg output by 15.3%, 4.3% and 36.6%, respectively, in sheep, dairy cows and heifers, these results indicate the presence of TCBZ-resistant Fasciola hepatica in sheep and cattle on this farm [1]. Triclabendazole sulphoxide (50 mg/mL) results in extensive damage to the tegument of triclabendazole-susceptible F. hepatica, whereas triclabendazole-resistant flukes shows only localized and relatively minor disruption of the tegument covering the spines [2].Triclabendazole is metabolized into a number of compounds, depending on the route of administration, plasma levels peak at 18-24 hours (Triclabendazole sulphoxide) and 36-48 hours (Triclabendazole sulphone), neither Triclabendazole nor any toher metabolites can be detected in plasma. Triclabendazole sulphoxide blocks the transport of secretory bodies from the cell body to the tegumental surface, the block occurs at the site of their formation by the Golgi complex in the cell body, in their movement through the cytoplasmic connections to the syncytium, and in their movement from the base to the apex of the syncytium. Triclabendazole binds to the colchicine binding site on the β-tubulin molecule and this has been used at the basis for evaluating the relative acitvity of Triclabendazole [3].