1. Epigenetics
  2. Histone Demethylase
  3. IOX1

IOX1, 5-Carboxy-8-hydroxyquinoline, is a potent broad‐spectrum inhibitor of 2OG oxygenases, including the JmjC demethylases. IOX1 inhibits KDM4C, KDM4E, KDM2A, KDM3A and KDM6B with IC50 values of 0.6 μM, 2.3 μM, 1.8 μM, 0.1 μM and 1.4 μM, respectively. IOX1 also inhibits ALKBH5.

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IOX1 Chemical Structure

IOX1 Chemical Structure

CAS No. : 5852-78-8

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10 mM * 1 mL in DMSO
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Based on 9 publication(s) in Google Scholar

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Description

IOX1, 5-Carboxy-8-hydroxyquinoline, is a potent broad‐spectrum inhibitor of 2OG oxygenases, including the JmjC demethylases. IOX1 inhibits KDM4C, KDM4E, KDM2A, KDM3A and KDM6B with IC50 values of 0.6 μM, 2.3 μM, 1.8 μM, 0.1 μM and 1.4 μM, respectively[1][2]. IOX1 also inhibits ALKBH5[3].

IC50 & Target

KDM2

 

KDM3

 

KDM4

 

KDM6

 

In Vitro

IOX1 (0-200 μM; 2 hours) inhibits the proliferation and migration of vascular smooth muscle cells (VSMCs) stimulated with angiotensin II (Ang II) in a concentration-dependent manner[2].
? IOX1 (200 μM; 24 hours) blocks the cell cycle progression of angiotensin II (Ang II)-VSMCs by increasing the percentage of cells in the G0/G1 phase[2].
? IOX1 (50-200 μM; 2 hours) attenuates cyclin D1 and upregulates p21 mRNA levels in a concentration-dependent[2].
? IOX1 (50-200 μM; 2 hours) mediates cyclin D1 and p21 expression by regaining H3K9me3[2].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Cell Proliferation Assay[2]

Cell Line: Vascular smooth muscle cells (VSMCs)
Concentration: 50 μM, 100 μM, 200 μM
Incubation Time: Pretreated 2 hours
Result: Exhibited a decrease in proliferation and migration.

Cell Cycle Analysis[2]

Cell Line: Vascular smooth muscle cells (VSMCs)
Concentration: 200 μM
Incubation Time: 24 hours
Result: Slowed down the progression of the cell cycle from the G0/G1 to the S phase.

RT-PCR[2]

Cell Line: Vascular smooth muscle cells (VSMCs)
Concentration: 50 μM, 100 μM, 200 μM
Incubation Time: 2 hours
Result: Decreased cyclin D1 mRNA expression and increased p21 mRNA expression.

RT-PCR[2]

Cell Line: Vascular smooth muscle cells (VSMCs)
Concentration: 50 μM, 100 μM, 200 μM
Incubation Time: 2 hours
Result: Enhanced the total protein levels of H3K9me3.
In Vivo

IOX1 (5-c-8HQ) (oral gavage; 10-20 mg/kg; 12 days) inhibits tumor growth and attenuates the self-renewal of liver cancer stem-like cells (LCSCs) in vivo[1].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

Animal Model: Six-week-old male BALB/c nude mice[4]
Dosage: 10 mg/kg, 20 mg/kg
Administration: 12 days
Result: Did not result in obvious adverse effects on mice as demonstrated by no body weight reduction and no toxicity to the major organs after treatment.
Inhibited LCSC orthotopic graft tumor growth.
Significantly reduced the protein levels of EpCAM and Sox9 in LCSC orthotopic graft tumors nhibited LCSC orthotopic graft tumor growth.
Decreased Ki67-positive tumor cells and markedly reduced the tumorsphere formation abilities of LCSCs in a dose-dependent manner.
Molecular Weight

189.17

Formula

C10H7NO3

CAS No.
Appearance

Solid

Color

White to gray

SMILES

O=C(C1=C2C=CC=NC2=C(O)C=C1)O

Shipping

Room temperature in continental US; may vary elsewhere.

Storage
Powder -20°C 3 years
4°C 2 years
In solvent -80°C 1 year
-20°C 6 months
Solvent & Solubility
In Vitro: 

DMSO : 13.33 mg/mL (70.47 mM; Need ultrasonic and warming; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 5.2863 mL 26.4313 mL 52.8625 mL
5 mM 1.0573 mL 5.2863 mL 10.5725 mL
View the 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, 1 year; -20°C, 6 months. When stored at -80°C, please use it within 1 year. When stored at -20°C, please use it within 6 months.

  • Molarity Calculator

  • Dilution Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass
=
Concentration
×
Volume
×
Molecular Weight *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

×
Volume (start)

V1

=
Concentration (final)

C2

×
Volume (final)

V2

In Vivo:

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.

  • Protocol 1

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% Saline

    Solubility: ≥ 2.08 mg/mL (11.00 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.
  • Protocol 2

    Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in Saline)

    Solubility: ≥ 2.08 mg/mL (11.00 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.
In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
%
DMSO +
+
%
Tween-80 +
%
Saline
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
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).
Calculation results:
Working solution concentration: mg/mL
Method for preparing stock solution: mg drug dissolved in μL  DMSO (Stock solution concentration: mg/mL).
The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only. If necessary, please contact MedChemExpress (MCE).
Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.
 If the continuous dosing period exceeds half a month, please choose this protocol carefully.
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.
Purity & Documentation

Purity: 99.72%

References

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, 1 year; -20°C, 6 months. When stored at -80°C, please use it within 1 year. When stored at -20°C, please use it within 6 months.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
DMSO 1 mM 5.2863 mL 26.4313 mL 52.8625 mL 132.1563 mL
5 mM 1.0573 mL 5.2863 mL 10.5725 mL 26.4313 mL
10 mM 0.5286 mL 2.6431 mL 5.2863 mL 13.2156 mL
15 mM 0.3524 mL 1.7621 mL 3.5242 mL 8.8104 mL
20 mM 0.2643 mL 1.3216 mL 2.6431 mL 6.6078 mL
25 mM 0.2115 mL 1.0573 mL 2.1145 mL 5.2863 mL
30 mM 0.1762 mL 0.8810 mL 1.7621 mL 4.4052 mL
40 mM 0.1322 mL 0.6608 mL 1.3216 mL 3.3039 mL
50 mM 0.1057 mL 0.5286 mL 1.0573 mL 2.6431 mL
60 mM 0.0881 mL 0.4405 mL 0.8810 mL 2.2026 mL
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IOX1 Related Classifications

Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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