1. Cell Cycle/DNA Damage
    Cytoskeleton
    NF-κB
    Metabolic Enzyme/Protease
    Immunology/Inflammation
    Apoptosis
  2. Microtubule/Tubulin
    Reactive Oxygen Species
    Apoptosis
  3. Lexibulin

Lexibulin (Synonyms: CYT-997)

Cat. No.: HY-10498 Purity: 98.08%
Handling Instructions

Lexibulin (CYT-997) is a potent and orally active tubulin polymerisation inhibitor with IC50s of 10-100 nM in cancer cell lines; with potent cytotoxic and vascular disrupting activity in vitro and in vivo. Lexibulin induces cell apoptosis and induces mitochondrial ROS generation in GC cells.

For research use only. We do not sell to patients.

Lexibulin Chemical Structure

Lexibulin Chemical Structure

CAS No. : 917111-44-5

Size Price Stock Quantity
10 mM * 1 mL in DMSO USD 125 In-stock
Estimated Time of Arrival: December 31
5 mg USD 114 In-stock
Estimated Time of Arrival: December 31
10 mg USD 204 In-stock
Estimated Time of Arrival: December 31
50 mg USD 732 In-stock
Estimated Time of Arrival: December 31
100 mg   Get quote  
200 mg   Get quote  

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Based on 1 publication(s) in Google Scholar

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Description

Lexibulin (CYT-997) is a potent and orally active tubulin polymerisation inhibitor with IC50s of 10-100 nM in cancer cell lines; with potent cytotoxic and vascular disrupting activity in vitro and in vivo[1][2]. Lexibulin induces cell apoptosis and induces mitochondrial ROS generation in GC cells[3].

IC50 & Target

IC50 value: 10-100 nM(cell assay)[1]

In Vitro

Lexibulin (CYT-997) prevents 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. Lexibulin is also capable of reversibly disrupting the microtubule network in cells, visualized using fluorescence microscopy. Thus, treatment of A549 cells with Lexibulin (1 μM) 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 are evident, including loss of adhesion and cell rounding. The effect of 1 hour of treatment with Lexibulin is reversible and cells rapidly recovered their normal microtubule architecture. Taken together, the data indicates that Lexibulin 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 Lexibulin (1 μM) had 38% and 43% of cells in G2-M at the same time points. Furthermore, at 24 hours post-Lexibulin treatment, only 66% of total cells are 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, Lexibulin potently inhibits proliferation, induces cell cycle arrest and most importantly apoptosis of both human myeloma cell lines (HMCLs) and primary MM cells[2].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

In Vivo

iIn a xenograft model using the human prostate cancer cell line PC3, oral dosing of Lexibulin (CYT-997) is initiated 13 days after cell implantation by which time palpable tumors were evident. A dose-dependent inhibition of tumor growth was apparent with Lexibulin (CYT-997), which at the highest dose was equivalent to parenterally administered paclitaxel. A single dose of Lexibulin (CYT-997) (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]. Lexibulin (CYT-997) treatment (15 mg/kg/day) significantly prolongs the survival in a murine model of aggressive systemic myelomatosis[2].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

Clinical Trial
Molecular Weight

434.53

Formula

C₂₄H₃₀N₆O₂

CAS No.

917111-44-5

SMILES

CCC[[email protected]](NC1=C(C)C=NC(C2=CC=C(NC(NCC)=O)C(OC)=C2)=N1)C3=CN=CC=C3

Shipping

Room temperature in continental US; may vary elsewhere.

Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 6 months
-20°C 1 month
Solvent & Solubility
In Vitro: 

DMSO : ≥ 100 mg/mL (230.13 mM)

H2O : < 0.1 mg/mL (insoluble)

*"≥" means soluble, but saturation unknown.

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.3013 mL 11.5067 mL 23.0134 mL
5 mM 0.4603 mL 2.3013 mL 4.6027 mL
10 mM 0.2301 mL 1.1507 mL 2.3013 mL
*Please refer to the solubility information to select the appropriate solvent.
In Vivo:
  • 1.

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% saline

    Solubility: ≥ 2.5 mg/mL (5.75 mM); Clear solution

  • 2.

    Add each solvent one by one:  10% DMSO    90% corn oil

    Solubility: ≥ 2.5 mg/mL (5.75 mM); Clear solution

*All of the co-solvents are provided by MCE.
References
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Keywords:

LexibulinCYT-997CYT997CYT 997Microtubule/TubulinReactive Oxygen SpeciesApoptosisInhibitorinhibitorinhibit

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