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Topoisomerase I/II inhibitor 3

Cat No.:V69217 Purity: ≥98%
Topoisomerase I/II inhibitor 3 (7) is a potent dual (bifunctional) inhibitor of topoisomerase I (Topo I) and II (Topo II).
Topoisomerase I/II inhibitor 3
Topoisomerase I/II inhibitor 3 Chemical Structure CAS No.: 2770804-74-3
Product category: Reactive Oxygen Species
This product is for research use only, not for human use. We do not sell to patients.
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Product Description
Topoisomerase I/II inhibitor 3 (7) is a potent dual (bifunctional) inhibitor of topoisomerase I (Topo I) and II (Topo II). Topoisomerase I/II inhibitor 3 inhibits cell proliferation/growth, invasion and migration and causes apoptosis by inhibiting the PI3K/Akt/mTOR signaling pathway. Topoisomerase I/II inhibitor 3 may be utilized in liver cancer research.
Biological Activity I Assay Protocols (From Reference)
Targets
Topoisomerase I Topoisomerase II PI3K
ln Vitro
Compound 7 (topoisomerase I/II inhibitor 3) (0-100 μM) has the ability to insert into DNA, alter its topology, and partially damage DNA[1]. Topoisomerase I/II inhibitor 3 (0–4 μM, 24 h) suppresses the proliferation of HCC (hepatocellular carcinoma) cells in a dose-dependent manner. It also suppresses the migration and invasion of HuH7 and LM9 cells by preventing MMP-9 expression[1]. In LM9 and HuH7 cells, topoisomerase I/II inhibitor 3 (0-14 μM, 48 h) significantly causes apoptosis. It also dose-dependently causes mitochondrial malfunction and ROS explosion[1]. Topoisomerase I/II inhibitor 3 (0-7 μM, 48 h) suppresses the phosphorylation of the PI3K/Akt/mTOR signaling pathway and increases the expression of proteins linked to mitochondria-dependent apoptosis, including Bax, cytochrome C, cleaved-caspase-3, and cleaved-caspase-9[1]. It also decreases the expression of the inhibitory factor Bcl-2.
ln Vivo
Topoisomerase I/II inhibitor 3 (compound 7) (male Kunming mice, 0-400 mg/kg, IP, once) has an LD50 of 250–400 mg/kg, which results in the death of the mice in the 400 mg/kg group[1].
Cell Assay
Cell Proliferation Assay
Cell Types: HCC cells (HuH7 and LM9)[1]
Tested Concentrations: 0, 0.5, 1, 2, and 4 μM
Incubation Duration: 24 h
Experimental Results: Inhibited HCC cells proliferation in a dose-dependent manner, with IC50 values of 2.10 μM (LM9) and 1.93 μM (HuH7), respectively, and dose-dependently inhibited the formation of cell colonies.

Apoptosis Analysis
Cell Types: LM9 and HuH7 cells[1]
Tested Concentrations: 0, 1.8, 3.5, 7, and 14 μM
Incubation Duration: 48 h
Experimental Results: Dramatically induced the apoptosis of LM9 and HuH7 cells in a concentration-dependent manner.

Western Blot Analysis
Cell Types: LM9 and HuH7 cells[1]
Tested Concentrations: 0, 1.8, 3.5, and 7 μM
Incubation Duration: 48 h
Experimental Results: diminished the expression of the inhibitory factor Bcl-2 and promoted the expression of mitochondria-dependent apoptosis-related proteins such as Bax, cytochrome C, cleaved-caspase-3 and cleaved-caspase-9; inhibited the Phosphorylation of PI3K/Akt/mTOR signaling pathway.
Animal Protocol
Animal/Disease Models: Male Kunming mice (19-22 mg, 8 mice, 4 groups)[1]
Doses: 200, 250, 400 mg/kg (dissolved in 5% DMSO and castor oil)
Route of Administration: IP, once
Experimental Results: Did not cause the mice in the 250 mg/kg and 200 mg/kg groups to die after 2 weeks of administration, and caused the mice in the 400 mg/kg group to die, with the LD50 between 250 and 400 mg/kg.
References
[1]. Deng X, Luo T, Zhang X, et al. Design, synthesis and biological evaluation of 3-arylisoquinoline derivatives as topoisomerase I and II dual inhibitors for the therapy of liver cancer. Eur J Med Chem. 2022;237:114376.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C24H24N2O4
Molecular Weight
404.46
CAS #
2770804-74-3
Appearance
Typically exists as solids (or liquids in special cases) at room temperature
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
May dissolve in DMSO (in most cases), if not, try other solvents such as H2O, Ethanol, or DMF with a minute amount of products to avoid loss of samples
Solubility (In Vivo)
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.

Injection Formulations
(e.g. IP/IV/IM/SC)
Injection Formulation 1: DMSO : Tween 80: Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution 50 μL Tween 80 850 μL Saline)
*Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution.
Injection Formulation 2: DMSO : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO 400 μLPEG300 50 μL Tween 80 450 μL Saline)
Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO 900 μL Corn oil)
Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals).
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Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO 900 μL (20% SBE-β-CD in saline)]
*Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.
Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin 500 μL Saline)
Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO 100 μLPEG300 200 μL castor oil 650 μL Saline)
Injection Formulation 7: Ethanol : Cremophor : Saline = 10: 10 : 80 (i.e. 100 μL Ethanol 100 μL Cremophor 800 μL Saline)
Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline
Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH 900 μL Corn oil)
Injection Formulation 10: EtOH : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH 400 μLPEG300 50 μL Tween 80 450 μL Saline)


Oral Formulations
Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium)
Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose
Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals).
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Oral Formulation 3: Dissolved in PEG400
Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose
Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose
Oral Formulation 6: Mixing with food powders


Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 2.4724 mL 12.3622 mL 24.7243 mL
5 mM 0.4945 mL 2.4724 mL 4.9449 mL
10 mM 0.2472 mL 1.2362 mL 2.4724 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.

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What is the mass of compound required to make a 10 mM stock solution in 5 ml of DMSO given that the molecular weight of the compound is 350.26 g/mol?
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  • The answer of 17.513 mg appears in the Mass box. In a similar way, you may calculate the volume and concentration.

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What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:
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  • The answer of 62.5 μL (0.1 ml) appears in the Volume (Start) box
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Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
Instructions to calculate molar mass (molecular weight) of a chemical compound:
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Definitions of molecular mass, molecular weight, molar mass and molar weight:
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In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.

Method for preparing in vivo formulation:Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

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