RG108

Synonyms: N-Phthalyl-L-tryptophan

RG108 (N-Phthalyl-L-tryptophan) is an inhibitor of DNA methyltransferase with IC50 of 115 nM in a cell-free assay, does not cause trapping of covalent enzymes.

RG108 Chemical Structure

RG108 Chemical Structure

CAS: 48208-26-0

Selleck's RG108 has been cited by 26 Publications

4 Customer Reviews

Purity & Quality Control

Batch: Purity: 99.82%
99.82

RG108 Related Products

Choose Selective DNA Methyltransferase Inhibitors

Cell Data

Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID
human THP1 cells Function assay Inhibition of ACAT-mediated esterified cholesterol accumulation in human THP1 cells exposed to acetyl-LDL during differentiation assessed as effect on foam cell formation, IC50=1.5 μM 18620381
human HepG2 cells Function assay Inhibition of ACAT in human HepG2 cells, IC50=0.479 μM 19167888
rat macrophages Function assay 24 h Inhibition of ACAT in rat macrophages assessed as incorporation of extracellular [3H]-oleic acid-BSA complex into the intracellular cholesteryl ester after 24 hrs, IC50=0.479 μM 19464189
MCF7 Apoptosis assay 10 uM 6 hrs Induction of apoptosis in human MCF7 cells assessed as apoptotic cells at 10 uM after 6 hrs by FITC-Annexin V/propidium iodide staining-based FACS analysis relative to control 25801160
MCF7 Apoptosis assay 10 uM 6 hrs Induction of apoptosis in human MCF7 cells assessed as dead cells at 10 uM after 6 hrs by FITC-Annexin V/propidium iodide staining-based FACS analysis relative to control 25801160
MCF7 Function assay 100 uM 1 hr Competitive inhibition of DNMT1 in (S)-Methyl 2-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-3-(5-(prop-2-yn-1-yloxy)-1H-indol-3-yl)propanoate labeled human MCF7 cells at 100 uM preincubated for 1 hr followed by cell labeling for 30 mins and clicked with TER-PE 25801160
MCF7 Function assay 50 to 500 uM 1 hr Competitive inhibition of DNMT1 in (S)-Methyl 2-(2,5-dioxo-2,5-dihydro-1H-pyrrol-1-yl)-3-(5-(prop-2-yn-1-yloxy)-1H-indol-3-yl)propanoate labeled human MCF7 cells at 50 to 500 uM preincubated for 1 hr followed by cell labeling for 1 hr and clicked with TER 25801160
SK-N-MC qHTS assay qHTS of pediatric cancer cell lines to identify multiple opportunities for drug repurposing: Primary screen for SK-N-MC cells 29435139
Click to View More Cell Line Experimental Data

Biological Activity

Description RG108 (N-Phthalyl-L-tryptophan) is an inhibitor of DNA methyltransferase with IC50 of 115 nM in a cell-free assay, does not cause trapping of covalent enzymes.
Targets
DNA methyltransferase [1]
(Cell-free assay)
115 nM
In vitro
In vitro RG108 effectively blocks DNA methyltransferases in vitro and does not cause covalent enzyme trapping in human cell lines. Incubation of cells with low micromolar concentrations of RG108 results in significant demethylation of genomic DNA without any detectable toxicity. Intriguingly, RG108 causes demethylation and reactivation of tumor suppressor genes, but it does not affect the methylation of centromeric satellite sequences. [1] In another study, the synthesis and in vitro analysis of a biotinylated RG108 conjugate is investigated to evaluate the interactions with DNA methyltransferase enzymes. [2] In a recent study, it is shown RG108 can significantly reduce the DNA methyltransferases activity in SM derived iPS cells as compared to the native SMs. [3]
Kinase Assay In vitro methylation assay
The substrate DNA for the in vitro methylation assay is a 798 bp fragment (−423/+375 relative to the initiation codon) from the promoter region of the human p16Ink4a gene. The methylation reaction contains 350 to 400 ng substrate DNA and 4 units of M.SssI methylase (0.5 μM) in a final volume of 50 μL. Inhibitors are added to final concentrations of 10, 100, 200, and 500 μM, respectively. Reactions are done at 37 °C for 2 hours. After completion, the reaction is inactivated at 65 °C for 15 minutes and the DNA is purified using PCR Purification kit. Three hundred nanograms of purified DNA is digested for 3 hours at 60 °C with 30 units of BstUI and analyzed on 2% Tris-borate EDTA agarose gels.
Cell Research Cell lines HCT116 cells
Concentrations 1-100 μM
Incubation Time 5 days
Method For the determination of cellular growth and viability, cells are stained with trypan blue and counted using a standard counting grid.

Chemical Information & Solubility

Molecular Weight 334.33 Formula

C19H14N2O4

CAS No. 48208-26-0 SDF Download RG108 SDF
Smiles C1=CC=C2C(=C1)C(=O)N(C2=O)C(CC3=CNC4=CC=CC=C43)C(=O)O
Storage (From the date of receipt)

In vitro
Batch:

DMSO : 66 mg/mL ( (197.4 mM); Moisture-absorbing DMSO reduces solubility. Please use fresh DMSO.)

Ethanol : 66 mg/mL

Water : Insoluble


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In vivo
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Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid 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 master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O, mix and clarify.

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Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

Handling Instructions

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