IOX 1

histone demethylase JMJD inhibitor CAS# 5852-78-8

IOX 1

Catalog No. BCC6192----Order now to get a substantial discount!

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Quality Control of IOX 1

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Chemical structure

IOX 1

3D structure

Chemical Properties of IOX 1

Cas No. 5852-78-8 SDF Download SDF
PubChem ID 459617 Appearance Powder
Formula C10H7NO3 M.Wt 189.17
Type of Compound N/A Storage Desiccate at -20°C
Synonyms 5-carboxy-8HQ
Solubility Soluble to 100 mM in DMSO and to 100 mM in 1eq. NaOH
Chemical Name 8-hydroxyquinoline-5-carboxylic acid
SMILES C1=CC2=C(C=CC(=C2N=C1)O)C(=O)O
Standard InChIKey JGRPKOGHYBAVMW-UHFFFAOYSA-N
Standard InChI InChI=1S/C10H7NO3/c12-8-4-3-7(10(13)14)6-2-1-5-11-9(6)8/h1-5,12H,(H,13,14)
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Biological Activity of IOX 1

DescriptionHistone demethylase JMJD inhibitor (IC50 values are 0.12, 0.17, 0.2, 0.3, 0.6 and 1 μM for JMJD3, JMJD1A, JMJD2A, JMJD2E, JMJD2C and UTX respectively). Cell permeable; inhibits JMJD2A-mediated H3K9me3 demethylation in HeLa cells.

IOX 1 Dilution Calculator

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Preparing Stock Solutions of IOX 1

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 5.2863 mL 26.4313 mL 52.8625 mL 105.725 mL 132.1563 mL
5 mM 1.0573 mL 5.2863 mL 10.5725 mL 21.145 mL 26.4313 mL
10 mM 0.5286 mL 2.6431 mL 5.2863 mL 10.5725 mL 13.2156 mL
50 mM 0.1057 mL 0.5286 mL 1.0573 mL 2.1145 mL 2.6431 mL
100 mM 0.0529 mL 0.2643 mL 0.5286 mL 1.0573 mL 1.3216 mL
* Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations.

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Background on IOX 1

IOX 1 (5-carboxy-8HQ) is an inhibitor of histone demethylase JMJD with IC50 values of 0.2 μM for JMJD2E [1].

The Jumonji domain (JMJD) is a histone demethylase and acts as a transcriptional repressor.

IOX 1 is a histone demethylase JMJD inhibitor. In the FDH-coupled assay, IOX 1 inhibited JMJD2E with IC50 value of 0.2 μM. In MALDI-TOF MS assay, IOX 1 inhibited JMJD2E, JMJD2A, FIH and PHD2 with IC50 values of 2.4, 1.7, 20.5 and 14.3 μM, respectively. In HeLa cells, IOX 1 increased H3K9me3 fluorescence intensity, suggesting that IOX 1 inhibited H3K9me3 demethylation induced by JMJD2A with IC50 value of 86.5 μM. Also, IOX 1 exhibited cytotoxicity with IC50 value of 291.6 μM [1].

Reference:
[1].  King ON, Li XS, Sakurai M, et al. Quantitative high-throughput screening identifies 8-hydroxyquinolines as cell-active histone demethylase inhibitors. PLoS One, 2010, 5(11): e15535.

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References on IOX 1

Co-expression of AFAP1-AS1 and PD-1 predicts poor prognosis in nasopharyngeal carcinoma.[Pubmed:28380458]

Oncotarget. 2017 Jun 13;8(24):39001-39011.

Nasopharyngeal carcinoma (NPC) carries a high potential for metastasis and immune escape, with a great risk of relapse after primary treatment. Through analysis of whole genome expression profiling data in NPC samples, we found that the expression of a long non-coding RNA (lncRNA), actin filament-associated protein 1 antisense RNA 1 (AFAP1-AS1), is significantly correlated with the immune escape marker programmed death 1 (PD-1). We therefore assessed the expression of AFAP1-AS1 and PD-1 in a cohort of 96 paraffin-embedded NPC samples and confirmed that AFAP1-AS1 and PD-1 are co-expressed in infiltrating lymphocytes in NPC tissue. Moreover, patients with high expression of AFAP1-AS1 or PD-1 in infiltrating lymphocytes were more prone to distant metastasis, and NPC patients with positive expression of both AFAP1-AS1 and PD-1 had the poorest prognosis. This study suggests that AFAP1-AS1 and PD-1 may be potential therapeutic targets in NPC and that patients with co-expression of AFAP1-AS1 and PD-1 may be ideal candidates for future clinical trials of anti-PD-1 immune therapy.

Induction of Broadly Cross-Reactive Stalk-Specific Antibody Responses to Influenza Group 1 and Group 2 Hemagglutinins by Natural H7N9 Virus Infection in Humans.[Pubmed:28380622]

J Infect Dis. 2017 Feb 15;215(4):518-528.

Background: The outbreak of novel avian H7N9 influenza virus infections in China in 2013 has demonstrated the continuing threat posed by zoonotic pathogens. Deciphering the immune response during natural infection will guide future vaccine development. Methods: We assessed the induction of heterosubtypic cross-reactive antibodies induced by H7N9 infection against a large panel of recombinant hemagglutinins and neuraminidases by quantitative enzyme-linked immunosorbent assay, and novel chimeric hemagglutinin constructs were used to dissect the anti-stalk or -head humoral immune response. Results: H7N9 infection induced strong antibody responses against divergent H7 hemagglutinins. Interestingly, we also found induction of antibodies against heterosubtypic hemagglutinins from both group 1 and group 2 and a boost in heterosubtypic neutralizing activity in the absence of hemagglutination inhibitory activity. Kinetic monitoring revealed that heterosubtypic binding/neutralizing antibody responses typically appeared and peaked earlier than intrasubtypic responses, likely mediated by memory recall responses. Conclusions: Our results indicate that cross-group binding and neutralizing antibody responses primarily targeting the stalk region can be elicited after natural influenza virus infection. These data support our understanding of the breadth of the postinfection immune response that could inform the design of future, broadly protective influenza virus vaccines.

Microrna-217 modulates human skin fibroblast senescence by directly targeting DNA methyltransferase 1.[Pubmed:28380423]

Oncotarget. 2017 May 16;8(20):33475-33486.

DNA methyltransferase 1 (DNMT1) is a major epigenetic regulator associated with many biological processes. However, the roles and mechanisms of DNMT1 in skin aging are incompletely understood. Here we explored the role of DNMT1 in human skin fibroblasts senescence and its related regulatory mechanisms. DNMT1 expression decreased in passage-aged fibroblasts and DNMT1 silencing in young fibroblasts induced the senescence phenotype. MiR-217 is predicted to target DNMT1 mRNA and miR-217 expression increased in passage-aged fibroblasts. MiR-217 directly targeted the 3'-untranslated region (3'-UTR) of DNMT1 in HEK 293T cells and inhibited DNMT1 expression in fibroblasts. MiR-217 overexpression induced a senescence phenotype in young fibroblasts, and miR-217 downregulation in old HSFs partially reversed the senescence phenotype. However, these effects could be significantly rescued by regulating DNMT1 expression in fibroblasts. After regulating miR-217 levels, we analyzed changes in the promoter methylation levels of 24 senescent-associated genes, finding that 6 genes were significantly altered, and verified p16 and phosphorylated retinoblastoma (pRb) protein levels. Finally, an inverse correlation between DNMT1 and miR-217 expression was observed in skin tissues and different-aged fibroblasts. Together, these findings revealed that miR-217 promotes fibroblasts senescence by suppressing DNMT1-mediated methylation of p16 and pRb by targeting the DNMT1 3'-UTR.

Genetic Polymorphisms in Organic Cation Transporter 1 Attenuates Hepatic Metformin Exposure in Humans.[Pubmed:28380657]

Clin Pharmacol Ther. 2017 Nov;102(5):841-848.

Metformin has been used successfully to treat type 2 diabetes for decades. However, the efficacy of the drug varies considerably from patient to patient and this may in part be due to its pharmacokinetic properties. The aim of this study was to examine if common polymorphisms in SLC22A1, encoding the transporter protein OCT1, affect the hepatic distribution of metformin in humans. We performed noninvasive (11) C-metformin positron emission tomography (PET)/computed tomography (CT) to determine hepatic exposure in 12 subjects genotyped for variants in SLC22A1. Hepatic distribution of metformin was significantly reduced after oral intake in carriers of M420del and R61C variants in SLC22A1 without being associated with changes in circulating levels of metformin. Our data show that genetic polymorphisms in transporter proteins cause variation in hepatic exposure to metformin, and it demonstrates the application of novel imaging techniques to investigate pharmacogenetic properties in humans.

Quantitative high-throughput screening identifies 8-hydroxyquinolines as cell-active histone demethylase inhibitors.[Pubmed:21124847]

PLoS One. 2010 Nov 23;5(11):e15535.

BACKGROUND: Small molecule modulators of epigenetic processes are currently sought as basic probes for biochemical mechanisms, and as starting points for development of therapeutic agents. N(epsilon)-Methylation of lysine residues on histone tails is one of a number of post-translational modifications that together enable transcriptional regulation. Histone lysine demethylases antagonize the action of histone methyltransferases in a site- and methylation state-specific manner. N(epsilon)-Methyllysine demethylases that use 2-oxoglutarate as co-factor are associated with diverse human diseases, including cancer, inflammation and X-linked mental retardation; they are proposed as targets for the therapeutic modulation of transcription. There are few reports on the identification of templates that are amenable to development as potent inhibitors in vivo and large diverse collections have yet to be exploited for the discovery of demethylase inhibitors. PRINCIPAL FINDINGS: High-throughput screening of a approximately 236,000-member collection of diverse molecules arrayed as dilution series was used to identify inhibitors of the JMJD2 (KDM4) family of 2-oxoglutarate-dependent histone demethylases. Initial screening hits were prioritized by a combination of cheminformatics, counterscreening using a coupled assay enzyme, and orthogonal confirmatory detection of inhibition by mass spectrometric assays. Follow-up studies were carried out on one of the series identified, 8-hydroxyquinolines, which were shown by crystallographic analyses to inhibit by binding to the active site Fe(II) and to modulate demethylation at the H3K9 locus in a cell-based assay. CONCLUSIONS: These studies demonstrate that diverse compound screening can yield novel inhibitors of 2OG dependent histone demethylases and provide starting points for the development of potent and selective agents to interrogate epigenetic regulation.

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. IOX1 also inhibits ALKBH5.

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