Monomethyl auristatin D (MMAD), a potent tubulin inhibitor, is a toxin payload in antibody drug conjugate; Mc-MMAD is a protective group (maleimidocaproyl) -conjugated MMAD.IC50 Value:Target: tubulin; ADCsFor comparison purposes, the ADC A1 -mc-MMAD and/or A1 -vc-MMAD were used. The linker payload, mc-MMAD (6-maleimidocaproyl-monomethylauristatin-D) was conjugated to the A1 anti-5T4 monoclonal antibody through a cysteine residue at a ratio of approximately 4 drug moieties per antibody molecule. The linker payload mc- Val-Cit-PABA-MMAD or vc-MMAD (maleimidocapronic -valine-citruline-p- aminobenzyloxycarbonyl- monomethylauristatin-D) was conjugated to the A1 anti-5T4 monoclonal antibody through a cysteine residue at a ratio of approximately 4 drug moieties per antibody molecule (Antibody-drug conjugates Patent: WO 2013068874 A1).
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].
Abituzumab (DI17E6) is a humanised anti-integrin αV monoclonal antibody (IgG2 type). Abituzumab effectively reduces the phosphorylation of FAK, Akt and ERK. Abituzumab can be used in cancer research, particularly in prostate cancer[1].
Lexibulin 2Hcl (CYT-997 2Hcl) is a potent tubulin polymerisation inhibitor with IC50 of 10-100 nM in cancer cell lines; with potent cytotoxic and vascular disrupting activity in vitro and in vivo.IC50 value: 10-100 nM(cell assay) [1]Target: tubulin polymerisation inhibitor in vitro: CYT997 prevented the in vitro polymerization of tubulin with an IC50 of ～3 μmol/L (compared with the half-maximal inhibitory concentration of 2 μmol/L for colchicine under identical conditions) as determined using the conventional turbidimetric assay for tubulin polymerization. CYT997 was also capable of reversibly disrupting the microtubule network in cells, visualized using fluorescence microscopy. Thus, treatment of A549 cells with CYT997 (1 μmol/L) lead to the rapid reorganization of microtubules, including the destruction of the existing microtubule network and accumulation of tubulin in plaques within the cytoplasm of some cells. After 24 hours, major alterations in cell morphology were evident, including loss of adhesion and cell rounding. The effect of 1 hour of treatment with CYT997 was reversible and cells rapidly recovered their normal microtubule architecture. Taken together, the data indicates that CYT997 belongs to the class of anticancer agents that disrupt, rather than stabilize, tubulin-containing structures. Although vehicle-treated cells show 15% and 19% in G2-M phase at 15 and 24 hours (respectively), cells treated with CYT997 (1 μmol/L) had 38% and 43% of cells in G2-M at the same time points. Furthermore, at 24 hours post-CYT997 treatment, only 66% of total cells were in the G1, S, and G2-M phases, which suggests that cells blocked at the G2-M boundary do not exit back to G1, as in the normal cell cycle, but most likely are driven towards apoptosis and cell death [1]. Consistent with the disruption of cellular tubulin, CYT997 potently inhibits proliferation, induces cell cycle arrest and most importantly apoptosis of both human myeloma cell lines (HMCLs) and primary MM cells [2].in vivo: In a xenograft model using the human prostate cancer cell line PC3, oral dosing of CYT997 was initiated 13 days after cell implantation by which time palpable tumors were evident. A dose-dependent inhibition of tumor growth was apparent with CYT997, which at the highest dose was equivalent to parenterally administered paclitaxel. A single dose of CYT997 (7.5 mg/kg i.p.) clearly decreased blood flow in liver metastases, and a significant reduction in blood flow was present 6 hours postdose [1]. CYT997 treatment (15 mg/kg/day) significantly prolongs the survival in a murine model of aggressive systemic myelomatosis [2].
7-xylosyltaxol(Taxol-7-xyloside) is a taxol (Paclitaxel) derivative; Paclitaxel binds to tubulin and inhibits the disassembly of microtubules.IC50 Value:Target: Microtubule/TubulinPaclitaxel is a compound extracted from the Pacific yew tree with antineoplastic activity. Paclitaxel also induces apoptosis by binding to and blocking the function of the apoptosis inhibitor protein Bcl-2 (B-cell Leukemia 2). Paclitaxel inhibits DNA synthesis and stimulates the release of tumor necrosis factor-α. Paclitaxel induces apoptosis in murine mammary carcinoma MCA-4 and ovarian carcinoma OCA-1 tumors.
Novel irreversible transglutaminase 2 (TG2) inhibitor
Cemadotin (LU103793) is an analogue of Dolastatin 15 (HY-P1126) which is naturally occurring cytotoxic peptides. Cemadotin blocks cells at mitosis, and exhibits Ki value of 1 μM for inhibiting tubulin. Cemadotin can be used to research anticancer[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].
Tubulin inhibitor 24 is a potent tubulin inhibitor. Tubulin inhibitor 24 inhibits tubulin polymerization. Tubulin inhibitor 24 induces cell cycle arrest at the G2/M phase in a concentration-dependent manner. Tubulin inhibitor 24 shows antitumor activity with no obvious toxicity[1].
Danegaptide Hydrochloride (GAP-134 Hydrochloride) is a selective modifier of the gap junction protein.
Thiocolchicine-d3 is deuterium labeled Thiocolchicine. Thiocolchicine, a derivative modified in the C Ring of Colchicine (HY-16569) with enhanced biological properties. Thiocolchicine is a potent inhibitor of tubulin polymerization (IC50=2.5 µM) and competitively binds to tubulin with a Ki of 0.7 µM. Thiocolchicine induces cell apoptosis[1][2]. Thiocolchicine can be used as an ADC cytotoxin in ADC technology.
Tubulin polymerization-IN-15 (compound 4) is a potent inhibitor of tubulin polymerization. Tubulin polymerization-IN-15 has the potential for the research of cancer diseases[1].
PE859 is a potent inhibitor of both tau and Aβ aggregation with IC50 values of 0.66 and 1.2 μM, respectively.
Ispinesib is a specific inhibitor of KSP, with a Ki app of 1.7 nM.
Zaurategrast ethyl ester (CDP323), the ethyl ester prodrug of CT7758[1], is a α4β1/α4β7 integrin antagonist used for the treatment of inflammatory and autoimmune disorders[2].
CK-869 is an Actin-Related Protein 2/3 (ARP2/3) complex inhibitor, with an IC50 of 7 μM.
Vinorelbine (ditartrate) is an anti-mitotic agent which inhibits the proliferation of Hela cells with IC50 of 1.25 nM.
Mps1-IN-4 is a selective Monopolar spindle 1 (Mps1) inhibitor with antiproliferative activity for cancer research[1].
Crolibulin is a small molecule tubulin polymerization inhibitor.
Sovilnesib is a kinesin-like protein KIF18A inhibitor (WO2020132648). Sovilnesib can be used for the research of cancer[1].
TG53 is a potent inhibitor of tissue transglutaminase (TG2) and fibronectin (FN) protein-protein interaction. TG53 inhibits formation of a complex with integrin β1 and activation of FAK and c-Src during SKOV3 cell attachment onto FN. TG53 can be used for ovarian cancer research[1].
Myoseverina, a microtubule-binding molecule, induces the reversible fission of multinucleated myotubes into mononucleated fragments. Myoseverina affects the expression of a variety of growth factor, immunomodulatory, extracellular matrix-remodeling, and stress response genes, consistent with the activation of pathways involved in wound healing and tissue regeneration[1].
3,3'-Diethyl-9-methylthiacarbocyanine iodide is a cyanine dye, also a tau aggregation inhibitor, with an IC50 value of 0.28 μM for tau. 3,3'-Diethyl-9-methylthiacarbocyanine iodide can cause misfunction of the microtubule cytoskeleton. 3,3'-Diethyl-9-methylthiacarbocyanine iodide can be used for researching Alzheimer’s disease[1].
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].
Tubulin polymerization-IN-56 (compound 8l), an indazole derivative, is a potent tubulin polymerization inhibitor through interacting with the colchicine site, resulting in cell cycle arrest and cellular apoptosis. polymerization-IN-56 reduces cell migration and leads to more potent inhibition of tumor growth in vivo[1].
Podophyllotoxone is isolated from the roots of Dysosma versipellis and has anti-cancer activities.Podophyllotoxone is able to inhibit the tubulin polymerization[1].
Gap 27, connexin43 mimetic peptide, is a gap junction inhibitor.