Tirbanibulin
Based on 9 publication(s) in Google Scholar
Tirbanibulin (KX2-391) is an inhibitor of Src that targets the peptide substrate site of Src, with GI50 of 9-60 nM in cancer cell lines.
Nur für Forschungszwecke. Wir verkaufen nicht an Patienten.
- Reinheit: 99.45%
- CAS. Nr.: 897016-82-9
- Formel: C26H29N3O3
- Molecular Weight:431.53
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Speicherung:Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 2 years , -20°C, 1 year
Publications Citing Use of MedChemExpress (MCE) Tirbanibulin
More- Cancer Cell. 2024 Apr 8;42(4):682-700.e12. [Abstract]
- Nat Commun. 2024 Sep 9;15(1):7885. [Abstract]
- Sci Transl Med. 2018 Jul 18;10(450):eaaq1093. [Abstract]
- J Exp Clin Cancer Res. 2025 Jul 8;44(1):195. [Abstract]
- J Biol Chem. 2019 Nov 29;294(48):18099-18108. [Abstract]
- Microbiol Spectr. 2026 Mar 17:e0362025. [Abstract]
- Brain Res. 2020 Jun 1;1736:146782. [Abstract]
- University of Colorado Denver. 2024.
- bioRxiv. 2023 Dec 14.
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Cell Migration/Invasion Assay
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Flow Cytometry
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Cell Imaging/Staining
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WB
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Cell Proliferation/Viability Assay
Biologische Aktivität
GI50: 9 nM (Src, in HuH7 cells), 13 nM (Src, in PLC/PRF/5 cells), 26 nM (Src, in Hep3B cells), 60 nM (Src, in HepG2 cells)[1]
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Cell Line
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Type | Value | Description | References |
|---|---|---|---|---|
| 769-P | GI50 |
45 nM
Compound: 1; KX2-391; KX-01
|
Antiproliferative activity against human 769-P cells
Antiproliferative activity against human 769-P cells
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[PMID: 29617135] |
| A549 | GI50 |
9 nM
Compound: 1; KX2-391; KX-01
|
Antiproliferative activity against human A549 cells
Antiproliferative activity against human A549 cells
|
[PMID: 29617135] |
| A549 | IC50 |
0.075 μM
Compound: Tirbanibulin
|
Antiproliferative activity against human A549 cells incubated for 72 hrs by MTT assay
Antiproliferative activity against human A549 cells incubated for 72 hrs by MTT assay
|
[PMID: 38703557] |
| CCRF-HSB-2 | GI50 |
12 nM
Compound: 1; KX2-391; KX-01
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Antiproliferative activity against human CCRF-HSB2 cells
Antiproliferative activity against human CCRF-HSB2 cells
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[PMID: 29617135] |
| HCT-116 | GI50 |
31 nM
Compound: 1; KX2-391; KX-01
|
Antiproliferative activity against human HCT116 cells
Antiproliferative activity against human HCT116 cells
|
[PMID: 29617135] |
| HCT-116 | IC50 |
0.029 μM
Compound: Tirbanibulin
|
Antiproliferative activity against human HCT-116 cells incubated for 72 hrs by MTT assay
Antiproliferative activity against human HCT-116 cells incubated for 72 hrs by MTT assay
|
[PMID: 38703557] |
| Hep 3B2 | GI50 |
26 nM
Compound: KX2-391
|
Growth inhibition of human Hep3B cells after 3 days by MTT assay
Growth inhibition of human Hep3B cells after 3 days by MTT assay
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[PMID: 18979199] |
| HepG2 | GI50 |
60 nM
Compound: KX2-391
|
Growth inhibition of human HepG2 cells after 3 days by MTT assay
Growth inhibition of human HepG2 cells after 3 days by MTT assay
|
[PMID: 18979199] |
| HT-29 | GI50 |
25 nM
Compound: 1; KX2-391; KX-01
|
Antiproliferative activity against human HT-29 cells
Antiproliferative activity against human HT-29 cells
|
[PMID: 29617135] |
| HT-29 | IC50 |
23 nM
Compound: 1; KX2-391; KX-01
|
Antiproliferative activity against human HT-29 cells in presence of 1.5% FCS by BrdU incorporation assay
Antiproliferative activity against human HT-29 cells in presence of 1.5% FCS by BrdU incorporation assay
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[PMID: 29617135] |
| HT-29 | IC50 |
5 nM
Compound: 1; KX2-391; KX-01
|
Antiproliferative activity against human HT-29 cells in presence of 0.5% FCS
Antiproliferative activity against human HT-29 cells in presence of 0.5% FCS
|
[PMID: 29617135] |
| Huh-7 | GI50 |
9 nM
Compound: 1; KX2-391; KX-01
|
Antiproliferative activity against human HuH7 cells
Antiproliferative activity against human HuH7 cells
|
[PMID: 29617135] |
| Huh-7 | GI50 |
9 nM
Compound: KX2-391
|
Growth inhibition of human Huh-7 cells after 3 days by MTT assay
Growth inhibition of human Huh-7 cells after 3 days by MTT assay
|
[PMID: 18979199] |
| Jurkat | GI50 |
10 nM
Compound: 1; KX2-391; KX-01
|
Antiproliferative activity against human Jurkat cells
Antiproliferative activity against human Jurkat cells
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[PMID: 29617135] |
| K562 | GI50 |
13 nM
Compound: 1; KX2-391; KX-01
|
Antiproliferative activity against human K562 cells
Antiproliferative activity against human K562 cells
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[PMID: 29617135] |
| K562 | IC50 |
18.2 nM
Compound: KX01; KX2-391
|
Antiproliferative activity against human K562 cells assessed as inhibition of cell proliferation measured after 72 hrs by MTT assay
Antiproliferative activity against human K562 cells assessed as inhibition of cell proliferation measured after 72 hrs by MTT assay
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[PMID: 34081857] |
| K-562R | GI50 |
0.64 nM
Compound: 1; KX2-391; KX-01
|
Antiproliferative activity against human K562R cells
Antiproliferative activity against human K562R cells
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[PMID: 29617135] |
| KG-1 | GI50 |
16 nM
Compound: 1; KX2-391; KX-01
|
Antiproliferative activity against human KG1 cells
Antiproliferative activity against human KG1 cells
|
[PMID: 29617135] |
| L3.6pl | GI50 |
25 nM
Compound: 1; KX2-391; KX-01
|
Antiproliferative activity against human L3.6PL cells
Antiproliferative activity against human L3.6PL cells
|
[PMID: 29617135] |
| MCF7 | IC50 |
0.028 μM
Compound: Tirbanibulin
|
Antiproliferative activity against human MCF7 cells incubated for 72 hrs by MTT assay
Antiproliferative activity against human MCF7 cells incubated for 72 hrs by MTT assay
|
[PMID: 38703557] |
| MDA-MB-231 | GI50 |
20 nM
Compound: 1; KX2-391; KX-01
|
Antiproliferative activity against human MDA-MB-231 cells
Antiproliferative activity against human MDA-MB-231 cells
|
[PMID: 29617135] |
| MES-SA/Dx5 | GI50 |
34 nM
Compound: 1; KX2-391; KX-01
|
Antiproliferative activity against human MES-SA/Dx5 cells
Antiproliferative activity against human MES-SA/Dx5 cells
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[PMID: 29617135] |
| MOLT-4 | GI50 |
13 nM
Compound: 1; KX2-391; KX-01
|
Antiproliferative activity against human MOLT4 cells
Antiproliferative activity against human MOLT4 cells
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[PMID: 29617135] |
| NCI/ADR-RES | GI50 |
56 nM
Compound: 1; KX2-391; KX-01
|
Antiproliferative activity against human NCI/ADR-RES cells
Antiproliferative activity against human NCI/ADR-RES cells
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[PMID: 29617135] |
| NCI-H226 | GI50 |
98 nM
Compound: 1; KX2-391; KX-01
|
Antiproliferative activity against human NCI-H226 cells
Antiproliferative activity against human NCI-H226 cells
|
[PMID: 29617135] |
| NCI-H460 | GI50 |
51 nM
Compound: 1; KX2-391; KX-01
|
Antiproliferative activity against human H460 cells
Antiproliferative activity against human H460 cells
|
[PMID: 29617135] |
| NIH3T3 | GI50 |
0.023 μM
Compound: KX01, KX2 391
|
Inhibition of constitutively active human c-SRC527F mutant-induced growth inhibition in mouse NIH3T3 cells after 3 days by MTT assay
Inhibition of constitutively active human c-SRC527F mutant-induced growth inhibition in mouse NIH3T3 cells after 3 days by MTT assay
|
[PMID: 21852023] |
| PLC-PRF-5 | GI50 |
13 nM
Compound: KX2-391
|
Growth inhibition of human PLC-PRF-5 cells after 3 days by MTT assay
Growth inhibition of human PLC-PRF-5 cells after 3 days by MTT assay
|
[PMID: 18979199] |
| Ramos | IC50 |
15.7 nM
Compound: KX01; KX2-391
|
Antiproliferative activity against human Ramos cells assessed as inhibition of cell proliferation measured after 72 hrs by MTT assay
Antiproliferative activity against human Ramos cells assessed as inhibition of cell proliferation measured after 72 hrs by MTT assay
|
[PMID: 34081857] |
| RL | GI50 |
19 nM
Compound: 1; KX2-391; KX-01
|
Antiproliferative activity against human RL cells
Antiproliferative activity against human RL cells
|
[PMID: 29617135] |
| RPMI-8226 | GI50 |
40 nM
Compound: 1; KX2-391; KX-01
|
Antiproliferative activity against human RPMI8226 cells
Antiproliferative activity against human RPMI8226 cells
|
[PMID: 29617135] |
| SK-OV-3 | GI50 |
10 nM
Compound: 1; KX2-391; KX-01
|
Antiproliferative activity against human SKOV3 cells
Antiproliferative activity against human SKOV3 cells
|
[PMID: 29617135] |
| SK-OV-3 | IC50 |
6.8 nM
Compound: KX01; KX2-391
|
Antiproliferative activity against human SK-OV-3 cells assessed as inhibition of cell proliferation measured after 72 hrs by MTT assay
Antiproliferative activity against human SK-OV-3 cells assessed as inhibition of cell proliferation measured after 72 hrs by MTT assay
|
[PMID: 34081857] |
| SW-620 | GI50 |
109 nM
Compound: 1; KX2-391; KX-01
|
Antiproliferative activity against human SW620 cells
Antiproliferative activity against human SW620 cells
|
[PMID: 29617135] |
Tirbanibulin (KX2-391) is a Src inhibitor that is directed to the Src substrate pocket. Tirbanibulin (KX2-391) shows steep dose-response curves against Huh7 (GI50=9 nM), PLC/PRF/5 (GI50=13 nM), Hep3B (GI50=26 nM), and HepG2 (GI50=60 nM), four hepatic cell cancer (HCC) cell lines[1]. Tirbanibulin (KX2-391) is found to inhibit certain leukemia cells that are resistant to current commercially available drugs, such as those derived from chronic leukemia cells with the T3151 mutation. Tirbanibulin (KX2-391) is evaluated in engineered Src driven cell growth assays inNIH3T3/c-Src527F and SYF/c-Src527F cells and exhibits GI50 with 23 nM and 39 nM, respectively[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
| NCT Number | Sponsor | Condition | Start Date |
Phase
|
|---|---|---|---|---|
| NCT01329991 | Plexxikon| | 2011-05 | PHASE1 |
Chemical Information
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CAS. Nr. 897016-82-9
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Appearance Solid
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Molecular Weight 431.53
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Formel C26H29N3O3
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Color White to off-white
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SMILES
O=C(CC1=NC=C(C2=CC=C(OCCN3CCOCC3)C=C2)C=C1)NCC4=CC=CC=C4
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Synonyms
KX2-391; KX-01
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Versand
Room temperature in continental US; may vary elsewhere.
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Speicherung
Powder -20°C 3 years 4°C 2 years In solvent -80°C 2 years -20°C 1 year
Publications (9)
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Journal Impact Factor
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Most Recent
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Cancer Cell
PDGFRα+ITGA11+ fibroblasts foster early-stage cancer lymphovascular invasion and lymphatic metastasis via ITGA11-SELE interplay. [Abstract]2024 Apr 8;42(4):682-700.e12. PMID: 38428409 -
Nat Commun
Defective N-glycosylation of IL6 induces metastasis and tyrosine kinase inhibitor resistance in lung cancer. [Abstract]2024 Sep 9;15(1):7885. PMID: 39251588
Tirbanibulin purchased from MedChemExpress. Usage Cited in: Nat Commun. 2024 Sep 9;15(1):7885. [Abstract]
Effect of IL6 antibody (5 μg/mL), JAK-STAT3 inhibitors (S3I-201 = 10 μM, ruxolitinib = 2.5 μM), and SRC inhibitors (PP1 = 10 μM, PP2 = 10 μM, Tirbanibulin = 10 μM) on the migration of AS2-IL6-WT and AS2-IL6-N73Q cells through the space made by culture inserts. Images were obtained at 0 and 24 h.
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Sci Transl Med
PP2A inhibition is a druggable MEK inhibitor resistance mechanism in KRAS-mutant lung cancer cells. [Abstract]2018 Jul 18;10(450):eaaq1093. PMID: 30021885 -
J Exp Clin Cancer Res
Genomic profiling of a collection of patient-derived xenografts and cell lines identified ixabepilone as an active drug against chemo-resistant osteosarcoma. [Abstract]2025 Jul 8;44(1):195. PMID: 40624718 -
J Biol Chem
Reversible binding of the anticancer drug KXO1 (tirbanibulin) to the colchicine-binding site of β-tubulin explains KXO1's low clinical toxicity. [Abstract]2019 Nov 29;294(48):18099-18108. PMID: 31628188
Tirbanibulin purchased from MedChemExpress. Usage Cited in: J Biol Chem. 2019 Nov 29;294(48):18099-18108. [Abstract]
Tirbanibulin (KXO1; 0, 12.5, 25, 50, 100 nM; 16 h) induced cell cycle arrest at G2/M phase in HeLa, HepG2, and H460 cells.
Tirbanibulin purchased from MedChemExpress. Usage Cited in: J Biol Chem. 2019 Nov 29;294(48):18099-18108. [Abstract]
HeLa cells were treated with 100 nM paclitaxel (PTX), 100 nM vinblastine (Vin), 100 nM colchicine (Col), or 30 or 100 nM Tirbanibulin(KXO1) for 16 h, and microtubule morphology was monitored by immunofluorescence.
Tirbanibulin purchased from MedChemExpress. Usage Cited in: J Biol Chem. 2019 Nov 29;294(48):18099-18108. [Abstract]
Tirbanibulin (KXO1; 1 5 25 nM; 16 h) was incubated for 2 h before being treated with 100 μM EBI for another 2 h. Tirbanibulin inhibited the formation of the EBI-tubulin complex, but vinblastine did not, thus confirming KXO1 binding to the colchicine site on tubulin.
Tirbanibulin purchased from MedChemExpress. Usage Cited in: J Biol Chem. 2019 Nov 29;294(48):18099-18108. [Abstract]
Tirbanibulin (KXO1; 0-10000 nM; 5 days) reduced cell viability at 100000 nM in HeLa cells.
Tirbanibulin purchased from MedChemExpress. Usage Cited in: J Biol Chem. 2019 Nov 29;294(48):18099-18108. [Abstract]
Tirbanibulin (KXO1; 0-10000 nM; 10 h) was a totally reversible tubulin inhibitor.
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Microbiol Spectr
Repurposing flufenamic acid as a putative PmrB-directed adjuvant to restore colistin activity in Klebsiella pneumoniae. [Abstract]2026 Mar 17:e0362025. PMID: 41842337 -
Brain Res
Donepezil promotes neurogenesis via Src signaling pathway in a rat model of chronic cerebral hypoperfusion. [Abstract]2020 Jun 1;1736:146782. PMID: 32184165 -
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Lösungsmittel & Löslichkeit
DMSO : 41.67 mg/mL (96.56 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.
Konzentration (Stammlösung) × Volumen (Stammlösung) = Konzentration (Ziellösung) × Volumen (Ziellösung)
Select the appropriate dissolution method based on your experimental animal and administration route.
- For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
- To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for In Vivo experiments, it is recommended to prepare freshly and use it on the same day.
- The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.
Add each solvent one by one: 10% DMSO 40% PEG300 5% Tween-80 45% Saline
Solubility: ≥ 2.08 mg/mL (4.82 mM); Clear solution
This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.
Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
Add each solvent one by one: 10% DMSO 90% (20% SBE-β-CD in Saline)
Solubility: ≥ 2.08 mg/mL (4.82 mM); Clear solution
This protocol yields a clear solution of ≥ 2.08 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (20.8 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.
Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.
Please enter the basic information of animal experiments:
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Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
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%DMSO +
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
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%+
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+%Tween-80 + +
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%Saline +
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Working solution concentration: 0.22 mg/mL
Method for preparing stock solution: mg drug dissolved in μL DMSO. Stock solution concentration: mg/mL.
1. Take μL DMSO stock solution;
2. Add μL .
μL , mix evenly;
3. Then add μL Tween 80, mix evenly;
4. Then add μL
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Protokoll
Liver cell lines including Huh7, PLC/PRF/5, Hep3B, and HepG2 are routinely cultured and maintained in basal medium containing 2% fetal bovine serum (FBS) at 37°C and 5% CO2. Cells are seeded at 4.0×103/190 μL and 8.0×103/190 μL per well of 96-well plate in basal medium containing 1.5% FBS. These are cultured overnight at 37°C and 5% CO2 prior to the addition of Tirbanibulin (KX2-391), at concentrations ranging from 6,564 to 0.012 nM in triplicates. Treated cells are incubated for 3 days. Ten μLs of 3-(4,5-dimethylthiazol- 2-yl)-2,5-diphenyltetrazolium bromide (MTT) solution (5 mg/mL) is then added to each well on day 3 and cells incubated for 4 hours. The formazan product is dissolved with 10% SDS in dilute HCl. Optical density at 570 nm is measured. For comparison of activity and potency, parallel experiments are performed using Tirbanibulin (KX2-391). Growth inhibition curves, 50% inhibition concentration (GI50), and 80% inhibition concentration (GI80) are determined using GraphPad Prism 5 statistical software. Data are normalized to represent percentage of maximum response as well as reported in optical density at wavelength of 570 nm (OD570) signal format[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Reinheit & Dokumentation
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Data Sheet (276 KB)
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SDS (393 KB)
- English - EN (393 KB)
- Français - FR (393 KB)
- Deutsch - DE (393 KB)
- Norwegian - NO (393 KB)
- Español - ES (393 KB)
- Swedish - SV (393 KB)
- Italian - IT (393 KB)
- Portuguese - PT (393 KB)
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Handling Instructions (2659 KB)
Verweise
[1]. Lau GM, et al. Expression of Src and FAK in hepatocellular carcinoma and the effect of Src inhibitors on hepatocellular carcinoma in vitro. Dig Dis Sci, 2009, 54(7), 1465-1474. [Content Brief]
[2]. Fallah-Tafti A, et al. Thiazolyl N-benzyl-substituted acetamide derivatives: synthesis, Src kinase inhibitory and anticancer activities. Eur J Med Chem, 2011, 46(10), 4853-4858. [Content Brief]
Complete Stock Solution Preparation Table
Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 2 years; -20°C, 1 year. When stored at -80°C, please use it within 2 years. When stored at -20°C, please use it within 1 year.
| Optional Solvent | Concentration Solvent Mass | 1 mg | 5 mg | 10 mg | 25 mg |
|---|---|---|---|---|---|
| DMSO | 1 mM | 2.3173 mL | 11.5867 mL | 23.1734 mL | 57.9334 mL |
| 5 mM | 0.4635 mL | 2.3173 mL | 4.6347 mL | 11.5867 mL | |
| 10 mM | 0.2317 mL | 1.1587 mL | 2.3173 mL | 5.7933 mL | |
| 15 mM | 0.1545 mL | 0.7724 mL | 1.5449 mL | 3.8622 mL | |
| 20 mM | 0.1159 mL | 0.5793 mL | 1.1587 mL | 2.8967 mL | |
| 25 mM | 0.0927 mL | 0.4635 mL | 0.9269 mL | 2.3173 mL | |
| 30 mM | 0.0772 mL | 0.3862 mL | 0.7724 mL | 1.9311 mL | |
| 40 mM | 0.0579 mL | 0.2897 mL | 0.5793 mL | 1.4483 mL | |
| 50 mM | 0.0463 mL | 0.2317 mL | 0.4635 mL | 1.1587 mL | |
| 60 mM | 0.0386 mL | 0.1931 mL | 0.3862 mL | 0.9656 mL | |
| 80 mM | 0.0290 mL | 0.1448 mL | 0.2897 mL | 0.7242 mL |