Topoisomerase IN-7
Topoisomerase IN-7 is a bacterial topoisomerase inhibitor, with an IC50 value of 47 nM against Staphylococcus aureus DNA gyrase, 85 nM against Escherichia coli DNA gyrase, and 1 nM against Escherichia coli topoisomerase IV. Topoisomerase IN-7 inhibits the supercoiling activity of DNA gyrase, suppresses the relaxation activity of topoisomerase IV, stabilizes single-stranded DNA cleavage complexes, inhibits biofilm formation of specific bacteria, stimulates biofilm formation of methicillin-resistant Staphylococcus aureus, and exhibits bactericidal activity. Topoisomerase IN-7 is selective for bacterial topoisomerases over human topoisomerase IIα, shows moderate cytotoxicity, and inhibits the hERG potassium channel. Topoisomerase IN-7 can be used in studies of bacterial infections.
For research use only. We do not sell to patients.
- Formula: C23H23BrF3N3O2
- Molecular Weight:510.35
-
Storage:
Please store the product under the recommended conditions in the Certificate of Analysis.
All Topoisomerase Isoforms
More
Biological Activity
Description
IC50 & Target
[1]|
DNA Gyrase 47-85 nM (IC50) |
TOPO IV 1 nM (IC50) |
hERG |
Cellular Effect
|
Cell Line
|
Type | Value | Description | References |
|---|---|---|---|---|
| HepG2 | IC50 |
35.9 μM
|
Cytotoxicity against human HepG2 liver cancer cells measured via cell metabolic activity assay.
Cytotoxicity against human HepG2 liver cancer cells measured via cell metabolic activity assay.
|
42593901 |
| HUVEC | IC50 |
46.5 μM
|
Cytotoxicity against human HUVEC endothelial cells measured via cell metabolic activity assay.
Cytotoxicity against human HUVEC endothelial cells measured via cell metabolic activity assay.
|
42593901 |
In Vitro
Topoisomerase IN-7 (compound 13) displays potent broad-spectrum antibacterial activity against Gram-positive and Gram-negative bacterial strains, with MIC values as low as 0.008 μg/mL[1].
Topoisomerase IN-7 (1-10 μM) potently inhibits bacterial DNA gyrase and TopoIV with low nanomolar IC50 values, while showing minimal inhibition of human topoisomerase IIα, demonstrating high target selectivity[1].
Topoisomerase IN-7 dose-dependently inhibits biofilm formation in Acinetobacter baumannii and Escherichia coli, with 80% and >92% inhibition at 1/2 MIC respectively, but slightly inhibits or stimulates biofilm formation in MRSA depending on concentration[1].
Topoisomerase IN-7 (24 h) induces a postantibiotic effect in Acinetobacter baumannii at 1× and 8× MIC, in Escherichia coli at 8× MIC, but not in MRSA at tested concentrations[1].
Topoisomerase IN-7 (2 μM; 1 h) has moderate aqueous solubility and medium metabolic stability in mouse liver microsomes, but exhibits high lipophilicity and high plasma protein binding, indicating a need for pharmacokinetic optimization[1].
Topoisomerase IN-7 inhibits hERG potassium channels with an IC50 of 5.36 μM, showing improved hERG selectivity relative to earlier NBTIs[1].
Topoisomerase IN-7 (24 h) exhibits dose-dependent bactericidal activity against Acinetobacter baumannii, Escherichia coli, and MRSA, with no bacterial regrowth after 24 h at 8× MIC[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
In Vivo
Topoisomerase IN-7 (0.125-12.5 μg/mL; immersion; continuous; up to 120 h postfertilization) is well-tolerated in Danio rerio embryos at concentrations up to 2 μg/mL, with sublethal toxicity only occurring at higher doses[1].
MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
-
Animal Model:wild-type embryos[1]
-
Dosage:0.008 μg/mL (1 × MIC); 0.016 μg/mL (2 × MIC); 0.032 μg/mL (4 × MIC)
-
Administration:immersion; continuous; from 2 hours postinfection to 120 h postfertilization
-
Result:Reduced bacterial loads significantly.
Survived through the entire 4-day monitoring period.
-
Animal Model:wild-type embryos[1]
-
Dosage:0.125 μg/mL; 0.25 μg/mL; 1 μg/mL; 2 μg/mL; 6.25 μg/mL; 8 μg/mL; 10 μg/mL; 12.5 μg/mL
-
Administration:immersion; continuous; up to 120 h postfertilization
-
Result:Showed no lethality at any tested concentration.
Induced sublethal toxicity (lowered heart rate, liver necrosis) at concentrations above 2 μg/mL.
Chemical Information
-
Molecular Weight 510.35
-
Formula C23H23BrF3N3O2
-
SMILES
O=C1N(C)C2=C(N=CC(F)=C2OCC3CCC(NCC4=CC(F)=C(Br)C(F)=C4)CC3)C=C1
-
Shipping
Room temperature in continental US; may vary elsewhere.
-
Storage
Please store the product under the recommended conditions in the Certificate of Analysis.
Purity & Documentation
References
Calculators
Concentration (start) × Volume (start) = Concentration (final) × Volume (final)
Keywords
- Topoisomerase IN-7
- Topoisomerase IN7
- Topoisomerase IN 7
- Topoisomerase
- Potassium Channel
- Bacterial
- DNA gyrase
- Klebsiella pneumoniae
- methicillin-resistant Staphylococcus aureus
- human topoisomerase IIα
- hERG potassium channels
- Escherichia coli
- Acinetobacter baumannii
- Pseudomonas aeruginosa
- Staphylococcus aureus
- topoisomerase IV
- Inhibitor
- inhibitor
- inhibit