TW-37
Based on 4 publication(s) in Google Scholar
TW-37 is a potent Bcl-2 inhibitor with Ki values of 260, 290 and 1110 nM for Mcl-1, Bcl-2 and Bcl-xL, respectively.
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- Pureza: 99.50%
- No. CAS: 877877-35-5
- Fòrmula: C33H35NO6S
- Peso molecular:573.70
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Almacenamiento:Powder -20°C, 3 years , 4°C, 2 years ; In solvent -80°C, 6 months , -20°C, 1 month
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Actividad biológica
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Chemical Information
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Solvente y solubilidad
- Protocolo
- Pureza y Documentación
- Referencias
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Help & FAQs
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Publications Citing Use of MedChemExpress (MCE) TW-37
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Actividad biológica
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Mcl-1 260 nM (Ki) |
Bcl-2 290 nM (Ki) |
Bcl-xL 1110 nM (Ki) |
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Cell Line
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Type | Value | Description | References |
|---|---|---|---|---|
| PC-3 | IC50 |
0.2 μM
Compound: 5, TW-37
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Inhibition of growth of human PC3 cell overexpressing Bcl2
Inhibition of growth of human PC3 cell overexpressing Bcl2
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[PMID: 17034116] |
TW-37 (TW37) is a novel nonpeptide small-molecule inhibitor designed using a structure-based design strategy. TW-37 targets the BH3-binding groove in Bcl-2 where proapoptotic Bcl-2 proteins, such as Bak, Bax, and Bid bind. In fluorescence polarization-based binding assays using recombinant Bcl-2 and Bcl-xL proteins, TW-37 binds to Bcl-2 and Bcl-xL with Ki values of 290 and 1110 nM, respectively. TW-37 has an IC50 of 1.8 μM for endothelial cells but shows no cytotoxic effects for fibroblasts at concentrations up to 50 μM. The mechanism of TW-37-induced endothelial cell death is apoptosis, in a process mediated by mitochondrial depolarization and activation of caspase-9 and caspase-3. The effect of TW-37 on endothelial cell apoptosis is not prevented by coexposure to the growth factor milieu secreted by tumor cells. Inhibition of the angiogenic potential of endothelial cells (i.e., migration and capillary sprouting assays) and expression of the angiogenic chemokines CXCL1 and CXCL8 are accomplished at subapoptotic TW-37 concentrations (0.005-0.05 μM)[1]. TW-37 is a potent Bcl-2 and Mcl-1 inhibitor. In fluorescence polarization-based binding assays using recombinant Bcl-2, Bcl-xL, and Mcl-1 proteins, TW-37 binds to Bcl-2, Bcl-xL, and Mcl-1 with Ki values of 290, 1,110 and 260 nM, respectively[2].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Chemical Information
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No. CAS 877877-35-5
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Appearance Solid
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Peso molecular 573.70
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Fòrmula C33H35NO6S
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Color White to off-white
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SMILES
O=C(C1=CC(CC2=CC=CC=C2C(C)C)=C(C(O)=C1O)O)NC3=CC=C(C=C3)S(=O)(C4=CC=CC=C4C(C)(C)C)=O
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Envío
Room temperature in continental US; may vary elsewhere.
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Almacenamiento
Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month
Publications (4)
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Journal Impact Factor
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Most Recent
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Cell Rep
2025 Apr 16;44(5):115572. PMID: 40249703 -
Emerg Microbes Infect
Obatoclax inhibits SARS-CoV-2 entry by altered endosomal acidification and impaired cathepsin and furin activity in vitro. [Abstract]2022 Dec;11(1):483-497. PMID: 34989664 -
Cancer Gene Ther
Targeting MCM10 disrupts cancer stemness and counteracts sorafenib resistance in hepatocellular carcinoma. [Abstract]2025 Aug 1. PMID: 40750706 -
Oncol Lett
Preclinical analysis of novel prognostic transcription factors and immune-related gene signatures for bladder cancer via TCGA-based bioinformatic analysis. [Abstract]2021 May;21(5):344. PMID: 33747201
Solvente y solubilidad
DMSO : ≥ 100 mg/mL (174.31 mM; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)
* "≥" means soluble, but saturation unknown.
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, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
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, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
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: ≥ 2.5 mg/mL (4.36 mM); Clear solution
This protocol yields a clear solution of ≥ 2.5 mg/mL (saturation unknown).
Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (25.0 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.
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.
Protocolo
The sulforhodamine B (SRB) cytotoxicity assay is used. Briefly, optimal cell density for cytotoxicity assay, 2×104 to 3×104 cells per well, is determined by growth curve analysis. HDMECs are seeded at 2.5×104 per well in a 96-well plate and allowed to adhere overnight. Drug or control is diluted in EGM2-MV and layered onto cells, which are allowed to incubate for times as indicated in the figures. Alternatively, HDMECs are coincubated with TW-37 and 0 to 100 ng/mL recombinant human VEGF (rhVEGF)165 or 0 to 100 ng/mL recombinant human CXCL8. Cells are fixed on the plates by addition of cold trichloroacetic acid (10% final concentration) and incubation for 1 hour at 4°C. Cellular protein is stained by addition of 0.4% SRB in 1% acetic acid and incubation at room temperature for 30 minutes. Unbound SRB is removed by washing with 1% acetic acid and the plates are air dried. Bound SRB is resolubilized in 10 mM unbuffered Tris-base and absorbance is determined on a microplate reader at 560 nm. Test results are normalized against initial plating density and drug-free controls. Data are obtained from triplicate wells per condition and are representative of at least three independent experiments[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Mice[1]
Porous poly L-lactic acid scaffolds (6×6×1 mm) with an average pore diameter of 180 μm are fabricated. Just before implantation, scaffolds are seeded with 1×106 HDMECs in a 1:1 Matrigel/EGM2-MV mix. Male severe combined immunodeficient (SCID) mice (CB.17.SCID) are anesthetized with ketamine and xylazine, and two scaffolds are implanted s.c. in the dorsal region of each mouse. At 10 days after transplantation, six mice per treatment are treated with 3 mg/kg or 30 mg/kg TW-37 (in vehicle: PBS/Tween 80/ethanol) or vehicle alone i.v. for 5 consecutive days. At the end of the treatment period, mice are euthanized, and the scaffolds are retrieved, fixed overnight in 10% buffered formaldehyde at 4°C, and mounted on glass slides. Immunohistochemistry is done for Factor VIII and microvessels are counted in 6 fields per scaffold and 12 scaffolds per treatment at ×200 magnification. Alternatively, sections are stained with H&E and occluded blood vessels are counted.
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Pureza y Documentación
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Ficha de datos (281 KB)
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SDS (396 KB)
- English - EN (396 KB)
- Français - FR (396 KB)
- Deutsch - DE (396 KB)
- Norwegian - NO (396 KB)
- Español - ES (396 KB)
- Swedish - SV (396 KB)
- Italian - IT (396 KB)
- Korean - KR (396 KB)
- Portuguese - PT (396 KB)
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Instrucciones de manejo (2659 KB)
Referencias
[1]. Zeitlin BD, et al. Antiangiogenic effect of TW37, a small-molecule inhibitor of Bcl-2. Cancer Res. 2006 Sep 1;66(17):8698-706. [Content Brief]
[2]. Mohammad RM, et al. Preclinical studies of TW-37, a new nonpeptidic small-molecule inhibitor of Bcl-2, in diffuse large cell lymphoma xenograft model reveal drug action on both Bcl-2 and Mcl-1. Clin Cancer Res. 2007 Apr 1;13(7):2226-35. [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, 6 months; -20°C, 1 month. When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.
| Optional Solvent | Concentration Solvent Mass | 1 mg | 5 mg | 10 mg | 25 mg |
|---|---|---|---|---|---|
| DMSO | 1 mM | 1.7431 mL | 8.7154 mL | 17.4307 mL | 43.5768 mL |
| 5 mM | 0.3486 mL | 1.7431 mL | 3.4861 mL | 8.7154 mL | |
| 10 mM | 0.1743 mL | 0.8715 mL | 1.7431 mL | 4.3577 mL | |
| 15 mM | 0.1162 mL | 0.5810 mL | 1.1620 mL | 2.9051 mL | |
| 20 mM | 0.0872 mL | 0.4358 mL | 0.8715 mL | 2.1788 mL | |
| 25 mM | 0.0697 mL | 0.3486 mL | 0.6972 mL | 1.7431 mL | |
| 30 mM | 0.0581 mL | 0.2905 mL | 0.5810 mL | 1.4526 mL | |
| 40 mM | 0.0436 mL | 0.2179 mL | 0.4358 mL | 1.0894 mL | |
| 50 mM | 0.0349 mL | 0.1743 mL | 0.3486 mL | 0.8715 mL | |
| 60 mM | 0.0291 mL | 0.1453 mL | 0.2905 mL | 0.7263 mL | |
| 80 mM | 0.0218 mL | 0.1089 mL | 0.2179 mL | 0.5447 mL | |
| 100 mM | 0.0174 mL | 0.0872 mL | 0.1743 mL | 0.4358 mL |
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