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Gboxin

Alias: Gboxin Gboxin chloride
Cat No.:V21525 Purity: ≥98%
Gboxin, formerly known as Gboxin chloride, is an oxidative phosphorylation inhibitor that targets glioblastoma.
Gboxin
Gboxin Chemical Structure CAS No.: 2101315-36-8
Product category: OXPHOS
This product is for research use only, not for human use. We do not sell to patients.
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Purity & Quality Control Documentation

Purity: ≥98%

Product Description
Gboxin, formerly known as Gboxin chloride, is an oxidative phosphorylation inhibitor that targets glioblastoma. Gboxin inhibits the growth of primary mouse and human glioblastoma cells but not that of mouse embryonic fibroblasts or neonatal astrocytes. Gboxin rapidly and irreversibly compromises oxygen consumption in glioblastoma cells. Gboxin relies on its positive charge to associate with mitochondrial oxidative phosphorylation complexes in a manner that is dependent on the proton gradient of the inner mitochondrial membrane, and it inhibits the activity of F0F1 ATP synthase.
Gboxin (CAS#: 2101315-36-8, molecular weight 392.96, molecular formula C22H33ClN2O2) is a small-molecule benzimidazolinium derivative and an inhibitor of oxidative phosphorylation (OXPHOS) that targets glioblastoma. The compound inhibits the activity of F0F1 ATP synthase (mitochondrial complex V) and has antitumor activity. Gboxin rapidly and irreversibly compromises oxygen consumption in glioblastoma cells. It specifically inhibits the growth of primary mouse and human glioblastoma cells but not that of mouse embryonic fibroblasts or neonatal astrocytes.
Biological Activity I Assay Protocols (From Reference)
Targets
Gboxin targets mitochondrial oxidative phosphorylation, specifically F0F1 ATP synthase (mitochondrial complex V). By inhibiting ATP synthase activity, Gboxin reduces cellular energy production and selectively inhibits tumor growth. The compound's selectivity for glioblastoma cells over normal cells suggests that glioblastoma cells are particularly dependent on oxidative phosphorylation for energy production. This metabolic vulnerability underlies the compound's selective antitumor activity.
ln Vitro
The growth of primary "high-throughput GBM spheres" (HTS) cells is specifically inhibited by gboxin (0-15 μM; 96 hours); however, this effect does not extend to circulating primary low-passage mouse embryonic fibroblasts (MEFs) or astrocytes growing plasma cells [1].
Gboxin inhibits the growth of primary mouse and human glioblastoma cells in vitro but does not affect mouse embryonic fibroblasts or neonatal astrocytes. The compound rapidly and irreversibly compromises oxygen consumption in glioblastoma cells, indicating its potent effect on mitochondrial respiration. It inhibits F0F1 ATP synthase activity. The compound's selectivity for glioblastoma cells has been demonstrated in various cell lines.
ln Vivo
Gboxin is an oxidative phosphorylation inhibitor that targets glioblastoma in vivo. The compound inhibits the growth of primary mouse and human glioblastoma cells. Its antitumor activity has been demonstrated in animal models of glioblastoma. The compound's ability to rapidly and irreversibly compromise oxygen consumption in glioblastoma cells underlies its in vivo efficacy. Specific dosing regimens and detailed efficacy data are available in the scientific literature.
Enzyme Assay
In vitro enzyme assays for Gboxin involve measuring the inhibition of F0F1 ATP synthase (mitochondrial complex V) activity using isolated mitochondria or purified enzyme preparations. ATP production is measured using luciferase-based assays or other methods for detecting ATP. Oxygen consumption rates are measured using oxygen electrodes or Seahorse metabolic analyzers. These cell-free and isolated organelle assays provide mechanistic insights into the compound's effects on mitochondrial function.
Cell Assay
Cell viability assay [1]
Cell Types: HTS cells, MEFs and astrocytes
Tested Concentrations: 0, 185, 555, 1667, 5000, 15000 nM
Incubation Duration: 96 hrs (hours)
Experimental Results: Inhibited the growth of HTS cells (IC50=150 nM ).
In vitro cell-based assays for Gboxin involve treating glioblastoma cell lines and normal cell lines (e.g., mouse embryonic fibroblasts, neonatal astrocytes) with varying concentrations of the compound. Cell viability is measured using MTT, CCK-8, or similar assays. Oxygen consumption rates are measured using Seahorse metabolic analyzers. ATP levels are quantified using luciferase-based assays. The compound's selectivity for glioblastoma cells over normal cells is assessed by comparing IC50 values. Apoptosis and cell death are quantified using standard assays.
Animal Protocol
In vivo animal experiments for Gboxin have been conducted in mouse models of glioblastoma. Glioblastoma cells are implanted orthotopically or subcutaneously, and mice are treated with Gboxin via injection. Tumor growth inhibition is monitored using imaging or caliper measurements. Survival prolongation is assessed as a primary efficacy endpoint. The compound's effects on tumor metabolism and energy production are evaluated by analyzing tumor tissues. Specific dosing regimens and detailed efficacy data are available in the scientific literature.
ADME/Pharmacokinetics
Gboxin has a molecular weight of 392.96 and a molecular formula of C22H33ClN2O2. It is a small-molecule benzimidazolinium derivative. The compound is typically dissolved in DMSO for in vitro studies and can be formulated for in vivo administration. Its solubility and stability properties are consistent with small-molecule drug candidates. Specific pharmacokinetic data such as absorption, distribution, metabolism, and elimination have been characterized in preclinical studies. The compound is typically stored under recommended conditions for research compounds.
Toxicity/Toxicokinetics
Specific toxicity data for Gboxin is not extensively reported. The compound's selectivity for glioblastoma cells over normal cells suggests a favorable therapeutic index. However, as an inhibitor of mitochondrial oxidative phosphorylation, it may have off-target effects on tissues with high energy demands. Preclinical toxicology studies would be required for therapeutic development. Standard safety precautions should be taken when handling the compound in research settings.
References

[1]. Gboxin is an oxidative phosphorylation inhibitor that targets glioblastoma. Nature. 2019 Mar;567(7748):341-346.

Additional Infomation
Gboxin is an oxidative phosphorylation inhibitor that targets F0F1 ATP synthase and selectively inhibits glioblastoma cell growth. It rapidly and irreversibly compromises oxygen consumption in glioblastoma cells. The compound specifically inhibits primary mouse and human glioblastoma cells but not normal cells. Gboxin has potential applications in glioblastoma research and cancer metabolism studies.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C22H34CLN2O2
Molecular Weight
393.9706
Exact Mass
392.223
Elemental Analysis
C, 67.24; H, 8.46; Cl, 9.02; N, 7.13; O, 8.14
CAS #
2101315-36-8
Related CAS #
2101315-36-8;
PubChem CID
137628664
Appearance
White to off-white solid powder
Hydrogen Bond Donor Count
0
Hydrogen Bond Acceptor Count
3
Rotatable Bond Count
6
Heavy Atom Count
27
Complexity
481
Defined Atom Stereocenter Count
3
SMILES
CCC1=[N+](C2=CC=CC=C2N1CC(=O)O[C@@H]3C[C@@H](CC[C@H]3C(C)C)C)C.[Cl-]
InChi Key
UBWVTCCKVGOTBG-VYZBTARASA-M
InChi Code
InChI=1S/C22H33N2O2.ClH/c1-6-21-23(5)18-9-7-8-10-19(18)24(21)14-22(25)26-20-13-16(4)11-12-17(20)15(2)3/h7-10,15-17,20H,6,11-14H2,1-5H31H/q+1/p-1/t16-,17+,20-/m1./s1 SMILES
Chemical Name
2-Ethyl-1-(2-(((1R,2S,5R)-2-isopropyl-5-methylcyclohexyl)oxy)-2-oxoethyl)-3-methyl-1H-benzo[d]imidazol-3-ium chloride
Synonyms
Gboxin Gboxin chloride
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

Note: Please store this product in a sealed and protected environment, avoid exposure to moisture.
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)
DMSO : ~32.5 mg/mL (~82.71 mM)
H2O : ~10 mg/mL (~25.45 mM)
Solubility (In Vivo)
Solubility in Formulation 1: ≥ 2.17 mg/mL (5.52 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 21.7 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL.
Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution.

Solubility in Formulation 2: ≥ 2.17 mg/mL (5.52 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 21.7 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly.
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.

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Solubility in Formulation 3: ≥ 2.17 mg/mL (5.52 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 21.7 mg/mL clear DMSO stock solution to 900 μL of corn oil and mix evenly.


Solubility in Formulation 4: 2 mg/mL (5.09 mM) in PBS (add these co-solvents sequentially from left to right, and one by one), clear solution; with ultrasonication.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 2.5383 mL 12.6913 mL 25.3826 mL
5 mM 0.5077 mL 2.5383 mL 5.0765 mL
10 mM 0.2538 mL 1.2691 mL 2.5383 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.

Calculator

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An example of molarity calculation using the molarity calculator is shown below:
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.

Dilution Calculator allows you to calculate how to dilute a stock solution of known concentrations. For example, you may Enter C1, C2 & V2 to calculate V1, as detailed below:

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
g/mol

Molecular Weight Calculator allows you to calculate the molar mass and elemental composition of a compound, as detailed below:

Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
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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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